Wicked thunderstorms cool off one hot city

Just one of the hundreds of lighting strikes over L'Ile Perrot late Monday afternoon. The atmosphere was charged with energy after a very hot and humid day that saw highs in the lows 30s and humidex values over 40C. (ValleyWeather Image)

The hot summer of 2018 has rolled into August, with little relief so far. On Monday, Montreal reached 31.7C (89F), the fifteenth 30C plus day so far this summer. Adding to the extreme heat was oppressive humidity levels, with the humidex over 40C (104F) for 6 consecutive hours on Monday. The blazing daytime heat and humidity was brought to an abrupt end around the supper hour, as a line of fast moving thunderstorms crossed the city. The storms affected my domain on L'Ile Perrot close to 6pm, turning day to night, with a vivid display of spectacular lightning. Winds gusted over 90km/h at several locations, and 82km/h at Trudeau Airport. A much needed 10-20mm of rain fell over a 30 minute period from Valleyfield to Dorval.

The combination of strong winds and lightning knocked out power to over 40,000 Hydro Quebec clients, most across the West Island, Monteregie and South Shore. As of 11am Tuesday, 5600 clients remain without power.

Looking ahead to the remainder of this week, we can expect less humid weather, but still warm and somewhat unsettled. There is a risk of more showers and isolated thunderstorms today and Wednesday, but the risk is slight. On Thursday, skies should clear along with dryer air. The temperature will remain above normal, as it has all summer in Montreal. Expect daytime highs from 26C to 30C (79F to 86F) with overnight lows a little more comfortable, between 16C and 20C (61F to 68F). Skies will be partly to mostly sunny from Thursday through Sunday.

Record hot July in Montreal - more of the same for August

A message many can relate to in parts of eastern Canada, is displayed on a business in French River, Ontario. The community, 500km west of Ottawa, is being threatened by the 27,000 hectare Parry Sound fire. Dense smoke has settled over many parts of northeast Ontario and western Quebec. (CBC)

The month of July is in the record books, and it was the hottest to date at Trudeau Airport. The average temperature at the airport in suburban Dorval was 24.2C, with data back to 1941. The only warmer month on record for the region was in 1921, downtown an McGill University, with an average of 24.7C. The long-term 30 year average for July is 21.2C. The city recorded at least 11 days above 30C, with many regions in southern Quebec reporting more. The hottest day here on LÌle Perrot, was a scorching 36.3C on July 2nd. Rainfall was highly variable across Ontario and Quebec, with the bulk of the precipitation falling in the final week of July. For example, Trudeau Airport measured 97.6mm for the month, but most of that fell over a 48 hour period on the 25th and 26th. By contrast, here on L'Ile Perrot, I only recorded 46.2mm. I am confident with that number, as most of the thunderstorm activity went north of my location. The overnight period provided very little relief in the city, with 13 low temperatures remaining above 20C at the airport. It was even warmer in the concrete jungle downtown. Combined with the heat, was days of oppressive humidity values, some of the highest numbers and longest duration ever recorded in Montreal.

The dry weather has continued the elevated threat of brush and forest fires across parts of the province. Currently, there are 19 fires burning in Quebec. At times on Thursday, the smokey air from the Ontario fires, was drifting across eastern Ontario and into southern Quebec. West winds transported the smoke into the region. In Ontario, over 47 fires are burning in the northeast portion of that province alone. The largest in the 11,000 plus hectare Parry Sound fire. Clouds and an increase in humidity helped firefighters on Thursday, but it continues to burn out of control. Heavy rain over the last two weeks has been confined to the area around Ottawa, and not further west and north where it is desperately needed.

Hot start to August
A warm and humid southerly flow of air continues to dominate the weather in southern Quebec. A strong Bermuda high is relentlessly pumping the heat and humidity northward into eastern Canada. These conditions are forecast to persist through the upcoming weekend. Expect daytime highs near 30C and overnight lows in the low 20s. The muggy weather will prevail most of next week as well. Only a few scattered showers and thunderstorms are expected in our region through the weekend, with the bulk of the activity remaining well south of Montreal, over New England and the middle-Atlantic.

Torrential rain alleviates drought in Ontario - still dry in Quebec

Heavy rain this week brought a temporary end to drought conditions in southern Quebec and Ontario. These photos were taken during a torrential downpour Wednesday, July 25 in Vaudreuil, west of Montreal. Some locations in Ontario measured over 100mm (4 inches) of rain. The heavy rain also affected the Middle Atlantic and Northeast US, with flooding observed in several communities. (ValleyWeather Photos)

Deep tropical moisture streamed into eastern Ontario this past week, dumping a record-setting amount of rain on several regions. The hardest hit area stretched from central Pennsylvania northward into the Ottawa Valley. Ottawa reported 130.8mm of rain since last Sunday, with 61.4mm falling on Wednesday alone. More thunderstorms are rattling around the region on Friday, adding to the totals. The same system produced scattered thunderstorms in Montreal, with 36mm recorded at Trudeau Airport. This brings the monthly total up to 68.8mm in Montreal, still below normal for July, but a vast improvement nonetheless. Isolated amounts in the Vaudreuil area approached 50mm late Wednesday afternoon. The heavy rain was easily absorbed in most regions of Ontario and Quebec, with only minor flooding reported. The storms did produce scattered power outages across southern Quebec.

As we look towards the end of July and start of August, a similar pattern is expected. The upcoming weekend will be warm and humid on Saturday, with scattered thunderstorms. Sunday and Monday will be much drier, but remaining warm, with highs in the upper 20s. By next Tuesday, we can expect increasing clouds along with more showers and thunderstorms. Temperatures will remain at or slightly above normal in Montreal. Keep those air conditioners and fans close by because August is expected to be a warm and humid one in southern Quebec.

Tropical heat and humidity return to southern Quebec

Deep tropical moisture is moving northward from the southern US into Quebec and Ontario. Much needed rainfall is expected, with as much as 50mm by the end of the week. (AccuWeather.com)

A conveyor belt of heat and tropical humidity is streaming northward from the deep southern US, straight into southern Quebec and Ontario. Southern Quebec will be squeezed by a Bermuda high to our east and a trough of low pressure over the Great Lakes, helping to propel the moisture northward. This will result in periods of showers and thunderstorms throughout the upcoming week. Despite the persistent cloud cover, temperatures will be in the upper 20s to near 30C all week. Overnight lows will be very mild, in the 21 to 23C range. Combined with the high humidity, the weather will feel downright tropical and oppressive at times, with dew points in the middle 20s and humidex values in the upper 30s. Some relief will arrive by next weekend, with slightly cooler temperatures and lower humidity. The threat for showers and thunderstorms however, is expected to persist right into next weekend. So far July 2018 is averaging over 5 degrees above normal and may end up being one of the warmest on record for Montreal.

Quebec and Ontario need the rain
Rainfall will be scattered in nature with this system, but amounts could exceed 50mm (2 inches) by the end of the week.On Monday morning, 25mm fell in Rutland, Vermont is just two hours with a heavier downpour. On Sunday, 5 to 7mm fell in Montreal, but we desperately need more. Most of southern Quebec, eastern Ontario and neighbouring New York and New England has been very dry since mid-June. The list of municipalities asking residents to conserve water has grown steadily this month. Many are also banning outdoor burning of any kind. Here on L'Ile Perrot, we have been asked to avoid watering lawns, washing cars and filling pools until water levels rise again. Despite this request, there are still many residents running there sprinklers from dusk to dawn. It is not hard to find out which houses those are, as most lawns not being watered are completely brown. Other regions such as Chateuguay and St. Lazare are actually enforcing the request with a complete watering ban in place.

Another record high temperature for Montreal

A National Guard UH-60 Blackhawk helicopter drops water from a 660 gallon bucket onto the Flat Rock fire near Altona, New York. (National Guard photo via Twitter)

The sizzling summer of 2018 added another day to the record books on Monday, the fifth record high this month. The temperature reached 33.7C (93F) Monday afternoon at Montreal's Trudeau Airport, eclipsing the record of 32.3C set in 1982. Through July 16th, the average daytime high for the city has been a sweltering 30.8C (87F), well into record-setting territory. The normal average daytime high for the month of July in Montreal is 26.3C (79F). Of the 16 days so far this month, 9 have been above 30C.

Rain...finally
A cold front crossed the city Tuesday morning, producing widespread thunderstorm activity. The storms provided much needed rainfall, with 20mm falling on L'Ile Perrot. The rain was the first measurable precipitation this month, providing some slight relief to drought conditions that had been worsening by the day. Over the weekend several brush fires were reported across eastern Ontario. The forests have been very dry as well, with 19 fires burning in Quebec, most across the northwest portion of the province. Closer to home, 200 firefighters from New York, Vermont and southern Quebec, were battling the Flat Rock fire near Altona, New York in northern Clinton County. The fire had burned 528 acres as of Tuesday morning, and was 65 percent contained. The overnight rain provided some much needed assistance to the firefighters. Altona is 105km southwest of metro Montreal.

Behind the cold front, temperatures were still warm on Tuesday, but the humidity levels were dropping all day on brisk northwest winds. The weather will be more comfortable Tuesday night and Wednesday, with lows near 16C (61F) and a high on Wednesday of 25C (77F). Warmer, more humid weather returns Thursday into the upcoming weekend, with highs of 27C to 30C, along with the risk of showers and thunderstorms as we head into the weekend.

Southern Quebec and Ontario in desperate need of rain

More hot and humid weather is forecast for Montreal through next Tuesday. (AccuWeather.com)

Drought conditions are beginning to worsen across portions of eastern Ontario, southern Quebec and New England. In Montreal, the last measurable rainfall was on June 30 when a paltry 6mm fell. The dry weather has prompted numerous municipalities, in both provinces, to place restrictions on outdoor water use, as well as any burning. On Ile Perrot, lawn watering in prohibited at this time, but that has not stopped many residents from doing it anyway. Those who do obey the rules, are left with badly burnt lawns and trees loosing their leaves. The fire danger in forests across the region ranges from very high to extreme. Dozens of fires continue to burn in Quebec and Ontario. The dry weather has been accompanied by a very warm start to July. So far this month, 7 of the 12 days in Montreal have recorded highs above 30C (86F). Of the remaining days, only one was below 27C (81F).

There is a little good news on the horizon. A weak frontal boundary will move into southern Quebec overnight into Saturday morning, with some scattered showers. The rain will be light and isolated, but any moisture is welcome. Unfortunately this front will open the door to another hot and humid period, lasting into Tuesday. Daytime highs across the area will be in the low 30s, with humidex values approaching 38C (100F) Sunday and Monday. On Tuesday, a more potent cold arrives with numerous showers and thunderstorms. This front has the potential to bring Montreal our first appreciable rain of the month.

Towering waves pound the Newfoundland coast at Cape Race on Thursday. Post-Tropical Storm Chris moved into Placentia bay late in the day, before racing off to the northeast. (The Weather Network)

Tropical Storm Chris
Chris moved across Placentia Bay in Newfoundland on Thursday, with heavy rain, strong winds and towering waves. In Gander, 76mm (3 inches) of rain fell. A peak wind gust of 105km/h (65mph) was observed at Cape Pine, 102km/h (63mph) at Bonavista, and 91km/h (56mph) at St John's Airport. Waves as high as 8 metres (26 feet) pounded coastal regions along the south coast and Avalon Peninsula. At this time, no major damage was reported. Chris has become post-tropical, and is racing of to the northeast this morning in the open waters of the North Atlantic.

Tropical Storm Chris expected to impact Atlantic Canada

A NOAA satellite image of Tropical storm Chris southeast of Cape Hatteras on Tuesday afternoon.

7pm Update: Chris has been upgraded to a category 1 hurricane, with 85mph winds.

Tropical storm Chris is slowly starting to pull away from the North Carolina coast this afternoon, after being nearly stationary for the last 48 hours. At 11am this morning, the strengthening center of Chris was located 320km southeast of Cape Hatteras, North Carolina, with 70mph (110km/h) winds. The system was moving northeast at 15km/h, expected to enter the warm Gulf Stream waters shortly. Forecasters anticipate that Chris will become a hurricane later today. The immediate impacts from Chris have been pounding surf along the Outer Banks. Several roads have been washed over, and a few homes on Hatteras Island have suffered structural damage. One person drowned in the rough surf caused by Chris over the weekend in Nags Head, North Carolina.

The forecast track of Chris from the National Hurricane Centre, will take the storm very close to southeast Newfoundland by Friday.

Impacts in Atlantic Canada
As Chris strengthens over the next 24 hours, swells will increase along the east coast of the US. Chris is expected to weaken back to a tropical storm as it begins to approach the Canadian waters by Thursday. The Canadian Hurricane Centre in Halifax is expecting Chris to have some impacts on Atlantic Canada. Winds and seas should increase early Thursday along the Nova Scotia coast, with Chris remaining well offshore. The storm is then likely to approach the Avalon Peninsula of Newfoundland Friday morning, with perhaps a landfall. Heavy rain, in excess of 50mm (2 inches) and strong winds up to 100km/h (60 mph) are possible by the end of the week for portions of Newfoundland. Some fine tuning will need to be done on the exact track and impacts as the week progresses. Interests in Atlantic Canada should closely monitor the progress of Chris.

Extremely dry weather across southern Quebec

Over 30 active forest fires are burning across Quebec. To date, 368 fires have been reported, consuming over 23,000 hectares. Outdoor burning is not advised in metro Montreal and especially on the South Shore. Tinder dry conditions exist, with no rain occurring at Trudeau Airport so far this month. (CBC Photo)

The deadly heatwave the baked Montreal last week came to an end on Friday. The high heat and humidity was responsible for 54 deaths across the province. After a coolish Friday, temperatures warmed up again this weekend, with the city reaching 32C (90F) on Monday afternoon. The difference Monday, is there is a brisk southwest wind of 50km/h blowing, and the humidity is far more manageable.

One variable of the heatwave that does continue this week, is the very dry conditions. The aforementioned lower humidity levels and gusty winds are not helping the dry situation in Quebec. Trudeau Airport has officially measured no rainfall this month, and only 15mm (0.5") since June 19. The very dry weather and searing heat have baked neighbourhood lawns, with trees loosing leaves and showing signs of heat stress. No appreciable rain is expected through the balance of this week, with just a few spotty showers in the forecast Tuesday and again Saturday. The temperature will remain warm as well, between 27C and 30C (80 to 85F).

Forest fire risk on the rise across Quebec and Ontario
The lack of rain and intense heat has also resulted in a spike in forest fire activity across Quebec and northeast Ontario. In Quebec, over 30 active fires are being reported by SOPFEU, covering in excess of 42,000 hectares. The province has requested and received assistance from Saskatchewan, Alberta, New Brunswick and Newfoundland. Additional manpower and resources have arrived from Parks Canada. In addition to the Canadian help, several teams of firefighters are in Quebec from Massachusetts, New Hampshire and Maine.

In Ontario, 70 fires are burning in the northeast portion of that province, with evacuations underway in several communities. Over 400 firefighters have been assigned to the region, with reinforcements from other provinces expected to join the battle. Dense smoke from these fires is expected to drift into western Quebec over the next few days.

The tinder dry conditions in our immediate region have resulted in a very high fire threat across metro Montreal. Extreme fire danger conditions exist across the South Shore as well as the Ottawa Valley. Outdoor burning in may cases is prohibited and in all cases should just be avoided all together. Additionally several municipalities are asking the you conserve water, and refrain from watering your lawn, filling your pool or washing your car.

Relief on the way from searing heat in Montreal

Relief is on the way to southern Quebec from the week-long heatwave that has claimed at least 21 lives in the province. (AccuWeather.com)

Thursday marks the 7th and last day in a week-long heatwave that has claimed at least 33 lives in southern Quebec. The city has put in place emergency measures to assist those most at risk, but Urgence Sante is still reporting a 30 percent increase in calls, many directly related to the heat. Most municipalities have lengthened pool hours and established cooling centres. City of Montreal firefighters have been going door to door in many neighbourhoods to check on residents.

Temperature records have been falling across the province, with some locations establishing new all time record highs. Another temperature record, the third this week, was set on Wednesday in Montreal, as the mercury soared to 34.2C (94F) at Trudeau Airport. The previous record was 33.1C (91F) set in 1983. Other parts of the city were even warmer, I recorded a high of 34.8C (95F) on L'Ile Perrot. Montreal is expected to set another record today, with a forecast high of 35C (95F). Humidex or real feel temperatures will soar into the middle 40s.Widespread heat warnings and advisories remain posted from Ontario east through Quebec and into Atlantic Canada and south into New York and New England.

Numerous municipalities have imposed water bans or asked their residents to avoid watering lawns or washing cars. The blazing sun is starting to take a toll on browning lawns and trees, with leaves falling to the ground as if it was September. Conditions are dry, with less than 15mm of rain falling at Trudeau Airport since June 19th. Some relief is on the way as early as this afternoon. A cold front will move across Ontario and into Quebec in the wee hours Friday morning. Some pulse type thunderstorms are expected to pop up this afternoon around Montreal. The biggest threat is expected to be strong winds, dangerous lightning and torrential downpours. More storms are expected along the cold front overnight in Montreal, before cooler, more refreshing air arrives. On Friday, the heatwave will break, with clearing skies, lowering humidity levels, and a high temperature of 23C (73F). On Friday night, the temperature will drop below 20C (68F) for the first time in over a week, with a forecast low of 12C (54F). Mother Nature will be providing the natural A/C.

Thunderstorms cut power to over 160,000 Quebec homes

A beautiful end to a record setting hot day. Mother Nature has been putting on quite a show this week, I took this picture of a spectacular sunset over Vaudreuil Bay last evening. Decaying cumulus clouds can be seen in the background as the storms dissipated at sunset. At the same time lightning was flashing in the distance behind me off to the east.

Heat warning remains in effect for metro Montreal.

The heatwave continues. As I write this Tuesday afternoon, the mercury has reached the forecast high of 32C (90F). In relative terms, it is a touch less oppressive today in Montreal, as dew points and humidity levels are down. It does however, remain hot. The humidity will creep back up again on Wednesday and Thursday into the oppressive range, along with highs near 35C (95F).

On Monday, Montreal recorded another record high in this current heatwave, reaching 35.3C (96F). The previous record was 34.4C established in 1963. We will likely miss the record from today of 33.9C set in 1966, but challenge it once again tomorrow and Thursday. As hot as Montreal was, the city was not the warmest in the country, Ottawa hit 36C (97F), breaking the 1963 mark of 35.6C. Bagotville was a sultry 36.9C (99F). Burlington, Vermont recorded the warmest night since record keeping began in that city, remaining above 27C (80F) Monday. The heatwave is forecast to continue through Thursday, before the arrival of a cold front. Cooler, less humid weather is forecast for the weekend. Severe thunderstorms are likely to accompany the cold front late Thursday into Friday morning across southern Ontario and Quebec.

The intensity and duration of the heat is beginning to take its toll on the region. Urgences Sante has reported a sharp increase in heat related medical calls. Cooling centres have been opened and pool hours have been extended in many communities. According to Montreal Mayor Valerie Plante, the city is having police and firefighters go door to door visiting those residents who are most vulnerable to the heat, including seniors. Montreal public health officials are reporting six fatalities directly linked to the heatwave.

Severe Thunderstorms
A weak cold front crossed southern Quebec late Monday afternoon, triggering a line of severe thunderstorms. Strong winds. in excess of 140km/h, brought down trees and power lines and caused major damage to Hydro Quebec infrastructure. A combination of lightning and wind knocked power out to over 163,000 Quebec residents. Hydro Quebec had more than 250 teams deployed to repair the damage. As of 3pm Tuesday afternoon, over 90 percent of the customers had been reconnected, with 15,000 customers still sweating in the dark. Hydro Quebec said that most of the power will be restored by the end of Tuesday, but some of the hardest hit regions may not get power back until late Wednesday.

Mother Nature puts on a Canada Day show in Montreal

Last evenings thunderstorms were simply spectacular. The incredible photo above was taken by Photographer Steve Walsh along the Verdun waterfront. It was just one of more than 15,000 lightning strikes recorded by Environment Canada during the storms. You can see more of Steve's amazing work by clicking here.

Heat Advisory in effect for southern Quebec

Weather is dominating the news in Montreal this Canada Day. A stifling heatwave is well underway, with temperature and humidity levels more common in south Florida than Montreal. At 1:15pm, I'm recording 33C (92F) here on L'Ile Perrot, but that is only part of the story, the relative humidity is 70 percent, with dew point readings in the middle 20s. The result is an extremely oppressive and dangerously hot day in Montreal and across southern Quebec and Ontario, with humidex values creeping into the middle 40s. The National Capital is also a hot place to be on this Canada Day, at 34C (94F) and a humidex of 47C, they are currently the warmest location in the country.

Widespread weather warnings for high heat and humidity are in effect across Ontario, Quebec, Atlantic Canada and into New England and New York. The National Weather Service issued its first ever Excessive Heat Warning for the St. Lawrence and Champlain Valley locations. This is issued when heat index values exceed 40C (105F). The heat index is forecast to be as high as 44C (110F), today and again Monday. This is an historical heatwave to say the least. There has been little relief overnight, with temperatures remaining in the low to middle 20s, This hot forecast is expected to last well into the late stages of the upcoming week. Be vigilant and respectful of this heat, drink plenty of fluids and check on those most at risk, children and seniors. Keep your pets indoors and away from hot cars.

Wicked Thunderstorms
On Saturday evening, intense isolated thunderstorm cells developed over southern Quebec, crossing the Island of Montreal between 9pm and 11pm. The storms produced hevay rainfall and hail. Here on L'Ile  Perrot, I was caught in nickle size hail. Hail being driven into your car at high speeds is very unnerving to say the least. The real story with the storms was the intense lighting. With plenty of energy in the atmosphere, the super cell storms produced a record amount of lightning strikes. Within a 50km radius of Montreal, Environment Canada recorded in excess of 15,000 individual lightning strikes during the evening storms. More storms are possible each day this week with the building heat, but the chances are low that any one area will see activity.

Significant heatwave to impact southern Quebec

A significant heatwave is expected in Montreal though late next week. High temperatures are forecast into the middle 30s, with overnight lows remaining warm in the low to mid 20s. High humidity levels will make it uncomfortable and dangerous at times.(AccuWeather.com)

Friday will be the first day in a week long heatwave forecast for much of eastern North America. Warm high pressure will move from the upper Midwest into the Great Lakes and slowly across Quebec and New England over the next few days. Heat and humidity will start to build on Friday in Montreal, with the warmest days expected Sunday through Tuesday.

A dangerous combination of high temperatures and humidity will see daily humidex values ranging from the upper 30s into the middle 40s. Heat warnings and advisories have been posted for a wide area of Ontario and the Ohio Valley into New York and New England. Those should be extended into southern Quebec today or Saturday. Records should fall in many locations. The warmest day ever recorded in Montreal was 37.6C (99.7F), August 1, 1975. We have a slight chance of equaling that during this heatwave.

As far as practical weather is concerned, we will have hazy sunshine most of the time. As the warm air advances into southern Quebec, an area of thunderstorms is expected on the periphery of the air mass. These may affect Montreal as early as Friday afternoon. There is also a risk of storms Saturday afternoon, and Monday through Thursday of next week. High temperatures will range from 30C (86F) on Friday, up to 36C (97F) Canada Day and Monday. The balance of next week will remain very warm, with slightly more cloud cover and thunderstorm activity, look for highs of 32C to 35C (90 to 95F). Overnight lows will remain very warm, especially in urban areas, between 21C to 24C (70 to 75F).

It is important to be vigilant during heat of this intensity. Heat stroke can occur very quickly. Stay hydrated, avoid overexertion during the peak heating hours. Pay close attention to the very young and old. Walk your pets in the early morning hours or late at night. Cars and heat do not mix as we have tragically seen this summer in Montreal. Children and pets should only be near vehicles with you, and ideally with the air conditioning on. Try to conserve energy during peak morning and afternoon hours, avoid running large appliances other than the A/C.

Stay cool and stay safe. Happy Canada Day!

Sweltering heatwave forecast by Canada Day for Ontario and Quebec

The first heatwave of the season should arrive in Montreal by the end of the week. High temperatures are expected to reach the middle 30s. (AccuWeather.com)

The first heatwave of the summer is anticipated by the end of this week, with record setting temperatures quite likely. Montreal can expect sunshine and warmer temperatures on Tuesday, with a high reaching 25C (77F). On Wednesday, low pressure and a warm front will approach form the Great Lakes, with a period of showers and isolated thunderstorms expected through Thursday afternoon. Rainfall amounts may approach 25mm (1 inch) is several locations across southern Quebec. The temperatures will remain mild despite the clouds and rain, with highs generally in the middle 20s.

Record Setting Heatwave

The passing warm front will set the stage for what could be a record setting heatwave across a large portion of eastern North America. Strong, warm high pressure will surge into the Ohio Valley and slowly move across the northeastern US through the Canada Day/ July 4th holiday period. The temperature will rise above 21C (70F) early Thursday morning in Montreal, and likely not fall below again until late Tuesday night. During this time, warm southwest winds will drive high temperatures into the low to mid-30s. By Sunday, the high may reach 37C (99F) in Montreal and Ottawa. Combined with building humidity, several cities may see humidex values as high as 45C (113F). The heat will surge into southern Ontario by Thursday, reaching Montreal and southern Quebec Friday. High temperatures across a wide portion of the region will reach between 35 and 37C (95 to 100F). 

As far as records go, the highest officially recorded temperature in Montreal was 37.6C (99.7F) set on August 1, 1975. In Ottawa, 37.8C (100F), set on August 11, 1944. During the 1975 heatwave in Montreal, several urban locations did rise above the 100F mark. The feeling is that several locations in southern Quebec and Ontario, may approach the 100F mark on July 1st. Whether we break the century mark or not, it will be dangerously hot. Heat advisories will likely be needed. Urban areas without air conditioning, will become unbearable by the end of the weekend. It is important during high heat events to remain hydrated and avoid over exertion. Be extremely vigilant when it comes to pets and children, especially around hot cars. Be sure to check on elderly relatives or neighbours. 

Powerful thunderstorms sweep the Prairies - humid weekend for Montreal

Severe thunderstorms produced large hail that covered the ground near Estevan, Saskatchewan late Thursday afternoon. (Photo by Byron Fichter via The Weather Network)

A wave of severe thunderstorms swept across southern Saskatchewan last evening, producing flooding, strong winds, funnel clouds and tennis ball size hail in spots. The hail stripped siding from homes, damaged cars and windows and flattened vegetation and crops. Numerous power outages were reported, with SaskPower working to repair storm damage and restore power across the southeast part of the province this morning. The super-cell storms were part of an area of severe weather that stretched from northeast Montana into North Dakota and southern Manitoba. A peak wind gust of 151km/h was reported near Estevan and 96km/h at Deerwood, Manitoba. Large hail, as big as softballs, was reported all across southern Manitoba and Saskatchewan. A confirmed tornado occurred near Waskada, Manitoba around 7pm Thursday evening.

Building humidity for Montreal

In southern Quebec, Thursday was rather damp and dreary behind a departing cold front, with a high of only 17C (63F) in Montreal. The cool weather will be very short-lived, as sunshine returns to end the work week. The temperature will respond nicely to the June sun today, rising to 24C (76F). The front in question brought Montreal some needed moisture, with 15mm falling since late Wednesday. A few isolated thunderstorms also occurred in southern Quebec, but the bulk of the severe weather remained in Ontario on Wednesday afternoon. 

As we head into the weekend, the heat and humidity will be on the rise again across southern Ontario and extreme southwest Quebec. Sunshine is expected Saturday, with high temperatures in the upper 20s. On Sunday, a very warm and moist air mass will move into Ontario and Quebec along with a mix of clouds and sun. Expect high temperatures near 30C (86F) in Montreal and a sultry 34C (95F) in Toronto. Along with the heat will come the threat for afternoon showers and thunderstorms. Some of the storms may be on the strong side, with the main threat being very heavy rain. The muggy, thundery weather will persist into Monday in southern Quebec.

Last week of spring very summer-like in Montreal

While the spring thunderstorm season has been fairly tame in southern Quebec so far, such has not been the case in western Canada. Portions of Alberta and Saskatchewan reported large hail, heavy rain, powerful winds and even isolated tornadoes over the weekend. Over 10,000 lightning strikes occurred Saturday alone in Alberta, with winds gusting to 122km/h at Lloydminster. A peak wind gust of 135km/h was observed at Scott, Saskatchewan. The spectacular photo above of a shelf cloud, was taken near Pierceland, Alberta and posted to The Weather Network website via Twitter. (TWN Photo)

Summer officially arrives at 6:07AM EDT, Thursday, June 21. After a cool start to the week early Monday morning, the weather is looking very summer-like to end Spring 2018.

After a glorious weekend across southern Quebec, the work week is starting much the same, with abundant sunshine and warm temperatures forecast. Montreal dipped to 9C (49F) early Monday morning, however don't let the cool start to the day fool you. Warm southwest winds are developing, and the temperature should respond nicely under the strong June sun. Look for a high temperatures near 24C (76F). Clear skies are forecast Monday night, with milder temperatures than this morning, lows near 15C (59F).

On Tuesday, even warmer air will stream northward into Montreal, along with a, slight increase in humidity, expect highs near 27C (81F). A cold front arrives on Wednesday, along with an increase in clouds, showers and thunderstorms. Expect a muggy high near 25C (77F). The balance of the week will see a return to sunny and warm weather, with high temperatures eventually reaching close to 30C (86F) by next weekend.

Perfect weather for Grand Prix weekend in Montreal

The weather in Montreal will be perfect for the Grand Prix du Canada this weekend. (AP Photo)

The weather is expected to be exceptional for this weekends activities at Circuit Gilles-Villeneuve in Montreal. The annual Grand Prix du Canada takes place on Sunday, with other racing and qualifying scheduled for Saturday. Strong high pressure over western Quebec will nudge slowly across the region through Monday. Saturday will feature wall to wall sunshine, with low humidity. Conditions will be a little breezy, with high temperatures of 22C to 24C (72-76F). Sunday will be nearly perfect for the F1, 70 lap main event, look for sunny weather, low humidity and light winds.  The high will be near 21C (70F), perhaps a little warmer at track level.

Looking ahead to early next week, high pressure will hold over southern Quebec. Expect sunny, warm weather through Wednesday. Whatever your plans are this weekend, enjoy, be safe and be good to each other.

Cold wet start to the work week in Montreal

A June snowfall greeted residents on Monday morning in Quidi Vidi Harbour, Newfoundland. (NTV Webcam)

After a perfect weekend, Monday dawned, rainy, windy and cold across southern Quebec. Montreal dropped from 24C (76F) late Sunday evening to 9C (49F) by morning. Combined with a brisk northeast wind of 50km/h, it was downright miserable. The cool weather was accompanied by steady rain, with 27mm falling as of midday Monday. The moisture is welcome, as the area did have a precipitation deficit since the start of May. However, I could do without the cold weather, as summer is short enough.

The culprit for the unseasonably cold weather is a slow moving upper level trough of low pressure sliding across the Great Lakes. The cool, wet weather will continue into Tuesday, before high pressure returns midweek.

June Snow!
It could be much worse, snow is falling once again across portions of Newfoundland. Winter is long enough in this country without June snow. St John's was only -1C (30F) this morning, with snow falling. Some locations measured as much as 5cm, with 10cm expected along the northwest coast. The normal high in St. John's is 15C (59F) for early June, however the forecast high for Monday is only 3C (38F). Other portions of Atlantic Canada fared no better, dipping to the freezing point last evening, with many locations reporting frost. Over a dozen record lows were set, including -2.2C (28F) in Edmundston, New Brunswick, -4.2C (24F) in Churchill Falls and -2.3C (28F) in Truro, Nova Scotia.

Welcome to Meteorological Summer

A North Carolina Department of Transportation dump truck was swept into flood waters on Thursday in the western part of the state. Widespread flooding has claimed 5 lives from Georgia to the Carolina's after the remains of tropical storm Alberto moved north with torrential rain and flash flooding. (NCDOT Photo)

Thursday was the warmest day of 2018 in Montreal, reaching 30.2C (86F) at Trudeau Airport. So far this morning, the low temperature has remained above 21C (70F), which would be a new record for the warmest low, the previous was 19.1C in 2013. The weather is right on schedule, as June 1st is the official start of meteorological summer. Basically, and really summarized here, we are looking at a warm and muggy summer in southern Quebec, with near to slightly above normal precipitation and temperatures. So basically nothing to see here, just a regular summer in Montreal.

Our current warm and humid air mass is courtesy of the remains of tropical storm Alberto. June 1st is also the start of Atlantic hurricane season. Alberto jumped the queue a little, arriving last Monday along the Florida Gulf Coast. The system generated minimal impacts along the coastal regions, but has become a big flash flood and thunderstorm producer through the Appalachians into the Great Lakes and Ohio Valley. The broad circulation of what is left of Alberto, is currently moving into central Ontario. East of the low, warm and humid air is being pumped northward into southern Quebec. Friday will see the end of this stretch of warm weather, as a cold front arrives late in the day. Accompanying the front will be thunderstorms, some strong with heavy rain and gusty winds. The high in Montreal will be a muggy 27C (81F) on Friday.

The weekend looks perfect in Montreal, with sunshine and mild temperatures. Expect highs near 23C (73F) and cool overnight lows near 10C (50F). The start of next week will not be great. A cool, moist air mass from Atlantic Canada will prevail through Wednesday, with well below normal temperatures, clouds and showers.

Record heat and snowstorms - just another May day in Canada

A record-breaking, shocking snowstorm slammed parts of western Newfoundland on Thursday. Over 30cm fell in Gander. (CBC Photo)

Thursday was a wild day across portions of New Brunswick. A strong cold front slipped south across the province, allowing chilly maritime air to invade from the northeast. Strong thunderstorms developed along the front, producing heavy rain, hail and lightning. Winds gusted in excess of 100km/h in several locations. The severe thunderstorms also impacted portions of down east Maine and Nova Scotia. Behind the front, cold air filtered into the region changing the rain to snow. As much as 5cm fell across northern portions of New Brunswick.

In Newfoundland, a record-setting storm dumped 32cm of snow on Gander. The heavy wet snow closed schools and made for poor travel conditions, just one week before June. Unseasonable cold weather is forecast to continue across Atlantic Canada, spreading westward into Quebec this upcoming weekend.

While cold weather prevailed in the east, record breaking warmth surged across western Canada, and as far north as Fort Smith, in the Northwest Territories. The community smashed a 70 year old record, with a daytime high of 30.2C (86F). In Alberta, Fort McMurray also established a new record at 32.5C (91F), and Edmonton 29.4C (85F). Dozens or other record highs occurred from B.C. to Manitoba.

Backdoor Cold front
Friday will be sunny and summer-like in southern Ontario and Quebec, with an increase in humidity and high temperatures of 27 to 30C (81 to 86F). The good news ends there, especially for southern Quebec. A backdoor cold front will settle south across the province on Saturday, with cooling temperatures and widespread showers and thunderstorms. Northeast winds will develop, dragging the cold air southwest from the frigid waters of the Gulf of St. Lawrence. A very sharp thermal boundary will be set up somewhere in the St. Lawrence Valley this weekend, with cool showery weather to the north and warm and humid weather to the south. At this time, high temperatures in Montreal on Saturday and Sunday, will range from 16 to 18C (61 to 65F). However, just to our south and west, highs may push into the middle and upper 20s as conditions remain warm and muggy in Ontario. Rain is expected to accompany the cooler weather in southern Quebec, with perhaps as much as 25mm (1 inch) over the weekend.

Severe weather season in Montreal - watch vs warning

Severe thunderstorms result in millions of dollars in damages every year across Canada. The threats are many with summer thunderstorms, including flash floods, strong winds, large hail, lightning and tornadoes.

Temperatures are slowly warming up across southern Quebec, and it won't be long before thunderstorms begin rattling around. With the increase in heat and humidity, will come the inevitable thunderstorm. Southern Quebec averages 15 to 17 thunderstorm days every year, most occurring between late May and early September. Severe thunderstorms are particularly menacing, because they come with several different high impact threats that can occur in any one region. They form very quickly, in lines or even as single cells. Tornadoes and lightning are among the greatest dangers within a thunderstorm. Lighting kills an average of 10 Canadians each year, while injuring 150 more. That being said, it is flash flooding, hail and strong winds that cause the greatest damage in Montreal.

Here are just a few examples of strong storms in Montreal. On August 22, 2017, a severe thunderstorm and microburst in the Borough of NDG, levelled thousands of trees and snapped hydro poles like twigs. On May 29, 1986, and again one year later on the same date, strong thunderstorms produced copious amounts of large hail, up to 12mm in diametre. The result was over $75 million dollars in damages to homes and cars across metro Montreal, and millions more in crop losses in southern Quebec. Of course the most famous thunderstorm in Montreal, occurred on July 14, 1987, when over 100mm of rain in less than 2 hours, flooded large portions of the city, including the Decarie Expressway. Known as the Decarie Flood, the storm resulted in two fatalities and $200 million in damages.

WATCH vs WARNING
The best way to protect yourself and property from summer storms is through awareness and vigilance. During hot and humid weather, listen for updated watches and warnings. Environment Canada will post a Severe Thunderstorm Watch, typically for a large area and a wide time frame. They are posted when conditions are favourable for severe thunderstorm development, but none are occurring yet. The watch is simply to advise the public that a threat does exist for severe weather. A Severe Thunderstorm Warning is an immediate call to action for a smaller portion of the watch area. The watch means strong storms have developed and are being tracked by Environment Canada. These storms are expected to impact the warned region. Keep in mind that thunderstorms form and dissipate very quickly. They are micro scale weather events, impacting a small geographical region at any given time. Therefore it is important that you check the time and source of the warning. Often social media will share information that is dated. Warnings are typically in effect for short periods of time for any given region, often less than one hour. They are updated often as the storms move through the area. The best course of action during severe thunderstorms, is to move inside, away from windows and doors. If outside, find the lowest point, make yourself as small as possible to avoid being struck by lightning.  More lightning safety tips can be found here.

Environment Canada continues to upgrade the doppler radar network across Canada, which will greatly improve severe weather forecasts as well as watch and warning times. You can read more on the new radar technology here.

Flood risk on the decline - fire risk on the rise in Quebec

The warmer weather this week has allowed many of the tulips in Montreal to bloom. However a frost advisory is in effect Thursday night across the Eastern Townships, where lows could dip below freezing. 

The spring flood risk has somewhat stabilized across southern Quebec. Dry conditions over the past week have allowed the rivers around Montreal to level off. The story is much the same in the Ottawa Valley. South of Montreal, Lake Champlain remains at flood stage, with the high water levels expected to travel north into the Richelieu Valley. According to Hydro Meteo, a flood warning is now in effect for the Richelieu River. At this time however, only minor flooding is forecast. Since May 1st, only 18.6mm of rain had fallen in and around Montreal. On Thursday, a few showers were forecast, but this will have little impact on water levels. The average rainfall for Montreal in May is 81.2mm. By comparison, during the historic Quebec floods of 2017, 160mm fell in April and 124mm in May.

A large portion of southern Quebec is in the elevated fire risk zone (yellow and orange). Any outdoor burning should be done with extreme vigilance. (SOPFEU)

Reconsider outdoor burning
Expect a very dry airmass to arrive behind the cold front Thursday evening. Temperatures will fall back below normal, along with low relative humidity values. According to SOPFEU, the forest fire watchdog in Quebec, the forest and brush fire risk is elevated for metro Montreal and the Monteregie, and very high for the Townships and Quebec City. Any outdoor burning should be done with extreme care. At this time, two fires are burning in the province, comprising 25.6 hectares (63 acres).

Looking ahead to the upcoming weekend and early next week, little if any precipitation is expected for Montreal. The dry breezy weather will only add to the fire risk. Colder temperatures will arrive Thursday night, with lows forecast close to the freezing point in several locations. Some frost is likely north of Montreal and across the Eastern Townships. Temperatures through the weekend will remain chilly in Montreal, with daytime highs of 15 to 17C (59 to 63F) and lows from 6 to 8C (43 to 48F). Warmer weather is expected by next Monday, as highs climb back into the middle 20s.

Fierce winds create widespread damage - 250,000 without power in Quebec

Firefighters on L'Ile Perrot, along with their colleagues in Montreal, were busy last night responding to dozens of calls for damage generated by 100km/h winds. (ValleyWX)

A strong cold front swept across southern Quebec and Ontario Friday afternoon, accompanied by the first round of severe thunderstorms this season. Thunder and lightning along with heavy rain, greeted drivers returning home in Montreal, as the storms arrived just in time for the evening commute. However the real story for Ontario and Quebec was the strong winds that developed behind the front. Wind gusts in excess of 100km/h created widespread damage and power outages. The wind increased rapidly in Montreal around 9pm Friday evening, and by midnight, over 250,000 residents were in the dark across the southern portion of the province. A peak gust to near hurricane force, 117km/h (72mph), was observed at Trudeau Airport. The wind managed to keep first responders busy, with dozens of call for trees falling onto power lines, cars and homes. On 6th Avenue in Lasalle, the wind took down a string of power poles. On the Louis Bisson Bridge into Laval, a semi was nearly blown into the river below. Transport Quebec closed Highway 13 overnight to remove the truck.

Widespread damage was reported in southern Ontario from the wind storm Friday. Hurricane force winds occurred in several parts of the province. (CBC)

 In Ontario nearly 300,000 customers were without power. A peak gust to 126km/h was reported in Hamilton, 119km/h in Toronto and 96km/h in Ottawa. Widespread damage was reported to trees, roofs and cars. Two deaths occurred in Ontario as a result of the wind. Hundreds of flights were delayed or cancelled after a ground stop was ordered at Pearson Airport.

South of the border in New York and Vermont, a tornado watch was posted for the same system. As of this time, no tornadoes were observed, but dozens of  incidents of wind and hail damage were reported.

Heavy thunderstorms & strong winds forecast for Montreal

A strong cold front will produce severe thunderstorms for portions of southern Quebec and Ontario today. (AccuWeather)

Wind warning posted for metro Montreal.

A potent low pressure system will slide from the upper Great Lakes into western Quebec today. The associated cold front will sweep across Southern Quebec late Friday afternoon. Ahead of this front a few breaks of sun and warming temperatures to near 20C (68F), will act to destabilize the atmosphere. The front will arrive mid to late afternoon, accompanied by a line of heavy showers and thunderstorms. The possibility exists for several of the storms to become severe in eastern Ontario and extreme southern Quebec. Strong winds, hail and heavy rain will be the biggest threat. There is even a slight risk of an isolated tornado, especially south of the St. Lawrence River towards the US border, and into New England.

The temperature will warm in advance of the front, reaching 18 to 21C (65-70F) across the area. As the front clears Montreal, very strong winds will develop in its wake. Wind warnings are in effect for the St. Lawrence Valley, with peak gusts as high as 90km/h possible. The wind will slowly diminish overnight to under 50km/h. On Saturday, we should have clearing skies, along with mild high temperatures of 18C (65F). The wind will remain gusty from the west up to 50km/h.

Water levels continue to slowly rise across Quebec in response to recent rainfall and melting snow. Regions south and east of metro Montreal, including Lake Champlain and the Richelieu River Valley are under flood warnings. A flood watch remains in effect for the rivers surrounding Laval as well as Lac Des Deux-Montagne. According to Hydro Meteo, minor flooding is forecast over the next few days. Vigilance is advised near all bodies of water as they are flowing high, fast and very cold. Minor flooding is also forecast in the Quebec City region, the Mauricie, Lanaudiere, Laurentians and Chaudiere-Appalaches.

Flooding potential on the rise in southern Quebec

Minor flooding was reported along the Milles-Iles River in Laval over the weekend. (Radio Canada)

The miserably cold and wet month of April is finally drawing to a close today. Once the final data is digested, I think we will find that many parts of the country, including Montreal, had one of the coldest April's on record. As we move into May, the hope is warmer air will finally win over here in southern Quebec. First we have to deal with what should be a "normal" flood season, and at least at this point, nothing record breaking like 2017. Hydro Meteo has been monitoring the waterways across the province, and has issued flood watches for many regions. Locally, a flood watch in in effect for the Townships and Laval. While water levels are sharply rising, only minor flooding has been reported to date. Over the weekend, 25 to 50mm of rain was reported across the area. With the ground saturated from earlier precipitation and snowmelt, most of this will runoff directly into rivers and streams. Hydro Meteo issued an update at 6am Monday, reporting significant rises in rivers across the Beauce, Eastern Townships, Quebec City, Mauricie and Lanaudiere. They are reminding residents who live close to waterways or in flood prone areas to remain vigilant.

The upper level low that produced the rainy and cold weekend, will meander into New Hampshire today, and eventually Atlantic Canada by Tuesday. More showers can be expected in Montreal today, with a cool high of 10C (50F). On Tuesday, skies will slowly clear, followed by the warmest surge of air so far this season. Expect a high of 17C (63F) Tuesday, and up to 24C (75F) Wednesday. Unfortunately another frontal system will arrive on Thursday, with more showers and perhaps even the first round of thunderstorms this year. Rainfall amounts may be significant in southern Quebec, adding to the current flood concerns.

Record setting storm slowly moving east

Hydro Ottawa poles were snapped in half after 9 hours of freezing rain across the National Capital region. (Hydro Ottawa Photo)

The storm that produced hour upon hour of freezing rain across southern Ontario and Quebec, is slowly releasing its grip on the region. The system was responsible for 9 hours of freezing rain in Montreal, the longest April event ever, dating back to 1953. Between 10 and 20mm of ice fell on the city and suburbs, delaying flights and closing most schools. A peak wind gust of 63km/h occurred at Trudeau Airport. Scattered power outages were also reported, mainly off island to the south and west.

In Ontario, the storm was much worse. Over 80mm of frozen precipitation (rain and ice pellets) fell on Toronto over 24 hours. A peak wind gust of 98km/h occurred at Billy Bishop Airport. In Ottawa and Gatineau, 9 hours of freezing rain deposited 28mm of ice. Power was out to over 60,000 homes in the region, including 44,000 on the Quebec side of the border. The ice snapped hydro poles in half in Ottawa. The Ontario Provincial Police reported hundreds of accidents over the weekend and Monday as a result of the late season storm. The Toronto Blue Jays baseball game was postponed Monday night due to ice falling from the CN Tower onto the roof of Rogers Centre.

The same storm was responsible for heavy snow across the central Great Lakes. Wiarton, Ontario reported 39.6cm of snow, while Green Bay, Wisconsin was hit with their second largest snowstorm ever, 24.2 inches. You have to go back 130 years to March 1-2, 1888 for the largest storm, 29 inches. On the warm side of the storm, widespread severe thunderstorms stretched from Arkansas to the Carolinas. Several tornadoes occurred as well as large hail. Widespread damage was reported, along with multiple injuries and at least four fatalities.

Icy start to work week for Montreal

So far, the worst of the icy weather has remained in Ontario this weekend. That will change today as freezing rain develops in Montreal this afternoon. Hundreds of accidents were reported by the Ontario Provincial Police on Saturday alone. (TWN Photo)

Freezing Rain Warning in effect for southern Quebec, including metro Montreal. 

The frontal boundary that left Montreal shivering in unseasonably cold air Saturday, has pushed far enough south to keep most of the precipitation away form the city for now. That being said, it won't stay there, and the bad news is that the worst of the weather returns to Montreal for the Monday commute. On Saturday, the bulk of snow and ice pellets remained in Ontario and New York. The result was hundreds of accidents reported by the OPP, as well as 10,000 residents without power in Ontario alone. Highway 401 was closed in at least two locations due to accidents. In Montreal, the weather was cold and windy, with just a dusting of snow overnight.

This morning, the weather remains cold, at -5C (23F) on L'Ile Perrot, combined with a northeast wind of up to 50km/h, the temperature feels like -15 C (5F). Icy precipitation will spread into southern Quebec this afternoon, as the front slowly begins to lift north again. Strong low pressure will move along the front tonight and Monday, spreading freezing rain and rain across the province. Temperatures will remain below freezing in Montreal for at least the next 24 hours. There is a real concern that a significant amount of freezing rain will fall. Expect a very poor commute Monday morning in Montreal. I would also anticipate power outages across southern Quebec due to ice accretion and gusty northeast winds. Expect winds between 50-70km/h in the St. Lawrence Valley Sunday and Monday. The freezing rain will eventually change to rain in Montreal late in the day Monday.

Storm to impact Quebec and Ontario with icy mix

A complex late season winter storm will impact Ontario and Quebec this weekend. (AccuWeather.com)

A complex and intense weather system will begin to impact southern Ontario late Friday, with a messy mix of freezing rain and snow. The precipitation will spread into extreme southern Quebec early Saturday. A frontal boundary over central New York will be the focus for the precipitation as it attempts to lift northward on Saturday. Low pressure will then slowly move along the front Sunday bringing another round of precipitation into the region. At the same time, strong high pressure anchored over central Quebec, will provide unseasonably cold air across the region.

Montreal can expect light snow on Saturday, with perhaps 5cm accumulating. The heaviest precipitation on Saturday will be across southern Ontario, where freezing rain and snowfall warnings have been posted. The possibility exists for a significant amount of freezing rain along the north shore of Lake Ontario into the St. Lawrence Valley. Further north snow will be the main form of precipitation. All regions, including Montreal can expect gusty northeast winds up to 60km/h through Sunday. Temperatures will fall below freezing overnight and remain there through most of the upcoming weekend in Montreal. On Sunday, heavier precipitation will arrive in Montreal, with the freezing rain lifting from southern Ontario into southern Quebec. This is a very dangerous late season storm, with  numerous impacts expected across the entire area. On Monday heavy rain is forecast, as the system slowly lifts northeast across Quebec.

I will post further updates early Saturday morning.

Challenging weekend forecast may bring snow and freezing rain to Quebec

A stationary front will be the focus of heavy precipitation over the weekend. The front will also represent the dividing line between very warm air to the south and more cold weather here in Montreal. (AccuWeather.com)

A very difficult, complex forecast period lies ahead for portions of southern Ontario and Quebec. Wednesday will likely be the best day of the week, with sunshine and fairly mild temperatures. Clouds will increase this afternoon, as a week clipper system crosses the region. We may have a few spotty showers or flurries along with the cloud cover.

On Thursday, a second weak area of low pressure will follow a similar path across southern Quebec, with light rain expected. Skies will briefly clear on Friday, before the real fun begins. A sharp frontal boundary will position itself across portions of central New York State and New England. North of the front, cold weather will prevail, with temperatures at or slightly below freezing. South of the front, temperatures will surge into the low to middle 20s.  The big question is where will the front settle? As the front meanders across the region through the weekend, strong low pressure will approach from the Midwest US. The storm will be packed with moisture. A mix of heavy wet snow, freezing rain, rain and thunderstorms is expected to develop on Saturday from the central US towards the Great Lakes, Ontario and Quebec. The potential exists for a significant freezing rain event for many, as well as heavy wet snow in some locations. Heavy rain will cause sharp rises in rivers and streams increasing the concern for flooding.

At this time amounts and type of precipitation are very difficult to nail down. One thing is certain, we will have a decent amount of precipitation, perhaps in excess of 50mm (2 inches) through Sunday night. Strong winds are also likely with this storm. Weather watches and warnings will likely be necessary for a portion of our forecast region as the event draws closer. Stay tuned as this will be a fluid event with a highly changeable forecast.

Chilly start to April to continue across most of Canada

I would like to express my deepest condolences to the residents of Humboldt and the province of Saskatchewan. I was saddened to hear the news of the terrible accident involving the Broncos hockey club. I wish the players, families and first responders strength and courage as they begin the long recovery process.

Strong winds in east end Montreal, toppled this sign onto several cars Wednesday night, April 4. The wind cut power to nearly 50,000 customers in Quebec. (Radio Canada Photo)

April Chill
The miserably cold start to April continues across most of Canada. From coast to coast, Canadians are dealing with cold and snow. The low on Friday morning in Edmonton was a bone-chilling -25C (-13F), the coldest since 1975. The storm on April 4 produced over 25mm of rain in Montreal, but the fierce winds were the real story. Gusts exceeded 90km/h in many parts of Ontario and Quebec, with a peak gust of 89km/h recorded at both Trudeau Airport and south shore St Hubert. In Ontario, the strongest wind was at Point Petre, at 102km/h. In New York, 75mph winds were recorded east of Lake Erie, while a gust to 100mph was measured on Mount Mansfield in Vermont.The wind knocked power out to thousands, including 50,000 in Quebec. There was also reports of structural and tree damage. Heavy snow fell northeast of Montreal, with 27cm at Quebec City. Blowing snow closed Highway 20 east of Quebec City to Riviere-du-Loup.

A tree lies across a house in western New York on April 4. (AccuWeather.com)

Cold, blustery weather followed the storm, with a high in Montreal of only -3C (27F) on Thursday, 4C (39F) Friday and a windy 3C (38F) Saturday. The average high for this time of year should be 9C (48F). Snow showers have been accompanying the cold, making it feel like February.

As we look ahead to the upcoming week, the picture looks the same for southern Quebec and Ontario. Expect below normal temperatures with periods of showers or flurries scattered through the week. At best, high temperatures may reach 7C (45F), still well below normal. Overnight lows will dip below freezing. At this rate, the icy piles of dirty snow still around, may last into May. I just want to rake my lawn!

Strong spring storm to spread snow and rain across Quebec

Where has spring gone? Many parts of Canada as well as the northern US continue to experience cold and snowy weather. More of the same is forecast through at least the middle of April.

Deepening low pressure is forecast to move from Colorado towards the lower Great Lakes on Tuesday. A warm front well in advance of the storm center, will push across the region Tuesday night, followed by a potent cold front Wednesday evening. South and east of the storm track, heavy rain is expected, with 25 to 40mm possible. Heavy rainfall warnings have been issued for southern Quebec, including metro Montreal. North and west of the track, snow will be the dominant precipitation type. Some locations from the upper Ottawa Valley into the Laurentians, may pick up 20 to 30cm of heavy wet snow. Environment Canada has posted snowfall warnings for Mont Tremblant as well as Sainte-Agathe and Saint-Sauvuer. Warnings are also in effect for the upper Ottawa Valley including Pembroke and Petawawa. Portions of western Quebec and extreme eastern Ontario may have mixed precipitation to start late Tuesday, but should transition to rain quickly. Behind the storm, rain will change to snow in Ottawa Wednesday night, with 5cm forecast.

Strong Winds
Temperatures will warm above freezing in Montreal on Tuesday, reaching a high of 4C (39F), with 6C (43F) expected on Wednesday. A strong cold front will arrive late Wednesday into Thursday morning, accompanied by very strong northwest winds. In the St. Lawrence Valley, gusts may reach 90km/h. Wind warnings may be necessary for Montreal late wednesday afternoon. Unseasonably cold air will rush back into southern Quebec, with lows plummeting by Thursday morning to -10C (14F) in Montreal. The cold, unsettled weather will be with us through the middle of the month, with several opportunities for snow across the northern tier of the US as well as central and eastern Canada. The next chance for snow could come as early as Friday morning here in Montreal, as a clipper system moves south of the city. More on that as the week progresses.