Freezing rain warnings posted for Ontario and Quebec

Another icy mix of snow, freezing rain and rain is forecast for Ontario and Quebec, Tuesday into early Wednesday. (AccuWeather)

Freezing rain warnings have been posted by Environment Canada for all of eastern Ontario and southern Quebec including Montreal. Low pressure, with an elongated warm front, will approach the Great Lakes early Tuesday and move down the St. Lawrence Valley on Wednesday. As with every other storm this winter, this system will be accompanied by a surge of warm air. Snow is forecast to start Tuesday morning in southern Ontario and spread into Montreal by mid-afternoon. The snow will mix with sleet, and eventually change to freezing rain. Accumulations of snow will range from 3 to 5cm from Montreal south to the US border. Expect 10 to 15cm north and east of the city towards Quebec City. A prolonged period of freezing rain is likely Tuesday night in Ottawa and Montreal. Winds are forecast to increase in southern Quebec, up to 50km/h Tuesday and 70km/h by Wednesday. The combination of ice on trees and wires and strong winds may produce some isolated power outages.

The temperature will be warming up on Tuesday, from -10C (14F), up to 0C by midnight. The high on Wednesday will be early in the day, around 2C (36F). Expect rain showers changing to flurries, with very strong winds. Colder air returns behind the storm for Thursday, with a low of -16C (4F) and a high of -5C (23F).

Expect very poor travel Tuesday and Wednesday across our entire region. Weather warnings extend into Ontario and across most of northern New England.

Next winter storm on the horizon for Montreal

The next winter storm is expected to arrive in southern Quebec by late Tuesday. A windy mix of snow and freezing rain is forecast once again. The exact location, type and quantity of precipitation will be determined as the system develops and moves closer. (AccuWeather.com)

The upcoming weekend will be unsettled, as a moist westerly flow off the central Great Lakes prevails across southern Quebec. Clouds will dominate, with light snow forecast from late Saturday through Sunday. Accumulations will be close to 5cm in southern Quebec. The temperature will be seasonably chilly, with daytime highs near -5C (23F) and overnight lows near -10C (14F).

Potent Winter Storm Expected
Monday will be partly cloudy and cold, as we await the next winter storm. Low pressure is forecast to develop in the southern Rockies by Monday and move northeast towards the lower Great Lakes. The storm is then expected to track down the St. Lawrence Valley passing close to Montreal on Wednesday. A surge of moisture and warm air will arrive with the storm, along with another mix of wintry precipitation. Current indications are for snow to start late Tuesday, and possibly transition to freezing rain or even plain rain along the US border by Wednesday morning. The exact track and temperature profiles are yet to be determined, but the possibility exists that Montreal and points north of the city, could remain all snow with this storm. That being said, we all remember to well the fiasco of the last forcasted storm. A difference of a few miles can alter the type and quantity of precipitation greatly when it comes to winter storms. Plan for an icy mix and slow travel late Tuesday through Thursday next week across Ontario and Quebec. Snow clearing contractors should be ready to plow and or salt from late Tuesday through Wednesday.

Strong winds are also forecast to accompany this storm, first out of the northeast in Montreal and eventually veering to the southwest as the warmer air arrives. Winds may gust in excess of 60km/h. South of the storm track, heavy rain is expected along the eastern seaboard,  with strong thunderstorms from the Midwest into the southern states.

Thousands still without power after New Brunswick ice storm

New Brunswick Power continues to work through a tangled mess of wires and poles after a significant ice storm last week left 200,000 in the dark. Hydro Quebec has sent 25 crews to assist.

Nearly 12,000 customers with New Brunswick Power remain in the dark after a brutal ice storm last week. The storm in question, was the same system that gave freezing rain to Montreal on January 24. Eastern New Brunswick, and particularly the Acadian Peninsula bore the brunt of the storm with 25 to 40mm of freezing rain. The weight of the ice toppled thousands of trees and hydro poles, taking down electrical wires with them. At the height of the storm over 200,000 customers were in the dark. In the last 24 hours that number has dropped considerably, but it will be several more days before the most isolated regions can be reconnected to the grid. Damage was quite significant to infrastructure, as a result repairs are taking longer than expected. The Canadian Armed Forces have sent in 200 personal from CFB Gagetown to help clear streets and distribute food and water. Hydro Quebec has 25 crews in New Brunswick to help with the restoration process. The outage is now the longest and most significant in New Brunswick Power history, surpassing that of Tropical Storm Arthur in July 2014. Two fatalities and dozens of injuries have been reported from carbon monoxide poisoning. Temperatures have been cold, making it difficult and dangerous for residents without heat.

New Brunswick Power Photos

January 2017 - top 5 warmest for Montreal
Meanwhile the weather in southern Quebec has turned noticeably colder this week, including an overnight low of minus 20C (-4F) on Tuesday morning. A weak clipper system will move across New England tonight giving Montreal less than 5cm of snow. Temperatures will remain chilly into the upcoming weekend. As it stands, January 2017 will be among the top 5 warmest on record for Montreal. The average temperature for the month will settle in close to -4.4C, well above the 30 year average of -9.7C. We managed below normal snowfall for the month, 42.3cm, but above normal rainfall with 35.7mm. Winds were gusty all month, with a peak gust of 93km/h on January 11. Cloudy, dreary, windy and mild best describes the month, let's see what February has to offer.

Colder weather arrives this weekend in Montreal

Colder air along with snow flurries and squalls are forecast through Saturday in Montreal. Les than 5cm of snow is expected in the city, with as much as 10cm across the hills to our south.

After Tuesday's mess, the weather has settled down this week. Temperatures have remained very mild for late January, in most cases above freezing since Wednesday. Slightly colder air will begin to cross the Great Lakes and arrive in southern Quebec starting today. That cold air will be accompanied by gusty west winds and occasional snow flurries. Some of the snow showers may be on the heavy side, enhanced by moisture streaming off the Great Lakes. The best chance for the heavier squally weather, will come from the noon hour through midnight today. We are not expecting a large amount of snow in Montreal, likely 3cm in the valley locations with up to 10cm across the hills to our south. Gusty west winds up to 50km/h may cause some blowing and drifting snow. The temperature is mild this morning, at 0C (32F), but will slowly drop through the day down to -4C (25F) tonight. Progressively cooler air will arrive over the weekend, with more flurries. Expect a high of -2C (29F) Saturday and -5C (23F) Sunday.

If your travels take you towards Toronto or south into western New York, lake effect snow is expected off Lake Ontario and Lake Erie. Some locations will see well in excess of 50cm over the next three days. The heaviest snow is forecast to fall south of Buffalo and Watertown, New York, as well as east of Georgian Bay.

Major storm underway in southern Quebec

Freezing rain has created treacherous driving conditions in southern Quebec Tuesday morning. Numerous accidents have been reported. (Valley Weather Photo)

Freezing rain warnings have been added to the mix this morning in southern Quebec. The freezing rain started just before 6am, and was quickly followed by a rash of major accidents around the city. Roads are covered in ice, many hills are impassable. Buses are parked in some locations until salt is put down. Highway 40 West at Cote Vertu is closed after a major accident involving several truck and cars. Many schools have closed for the day, especially off the island of Montreal. There are delays at Trudeau Airport. Even walking is dangerous at this time.

The storm in question, is located off the eastern seaboard, moving north towards Cape Cod. Abundant moisture will stream into southern Quebec today. I expect the freezing rain to change to snow shortly, as colder air is drawn into the St. Lawrence Valley. Snowfall will reach 10 to 20cm, with higher amounts northeast of Montreal. Winds are gusting over 50km/h in Montreal this morning, and are expected to increase to as much as 70km/h. Blowing snow is possible later this morning and into the afternoon. Precipitation will not taper off until after midnight. Temperatures will be steady near -3C (27F) for most of the storm.

Snowfall Warning for Montreal

The death toll has risen to 18 after tornadoes swept across the southeast US this past weekend. (AccuWeather.com)

Snowfall Warning in effect for metro Montreal, the Laurentians, and regions along the St. Lawrence Valley. Expect 15-25cm of wet snow and ice pellets Tuesday.

Heavy snow is forecast for southern Quebec Monday night and Tuesday, as a moisture laden system moves north along the eastern seaboard. The strengthening storm is part of the same system that launched deadly tornadoes over Georgia and Mississippi this past weekend. The death toll has risen to at least 18 after several major tornadoes swept the region. This included an EF-3 tornado, with winds in excess of 135mph near Albany, Georgia. Widespread damage was reported in several communities.

The storm will move north towards Cape Cod on Tuesday and then into Atlantic Canada by Wednesday. Snow mixed with freezing rain and ice pellets is forecast to begin this evening in southern Vermont and New York and spread north towards southern Quebec and eastern Ontario overnight. The bulk of the snow will fall Tuesday, with 15 to 25cm likely in southern Quebec. Less snow is expected south of Montreal, with more of a mix in those locations. Winds are increasing this morning out of the northeast up to 50km/h today and 60km/h in the snow on Tuesday. Temperatures will remain at or just slightly below freezing during the storm. Expect very poor driving conditions across out area for the Tuesday morning commute.

Coastal storm to impact southern Quebec Tuesday

Low pressure will move along the east coast this week, producing heavy wet snow in Montreal. (AccuWeather.com)

A complex area of low pressure will move up the east coast early this week, with widespread precipitation and strong winds. Those of you who read this blog on a regular basis knew several weeks ago that the likelihood of a stormy end to January and equally wintry February was on the menu. It all starts this week with a rather difficult weather setup. Low pressure responsible for flooding in California and severe thunderstorms with deadly tornadoes in the southeast, will begin to redevelop just off the North Carolina coast. The storm will move north towards southern New England on Monday, and into Maine and Atlantic Canada by Tuesday. Montreal will be on the west side of the storm, with just enough cold air to produce wet snow. The snow will start late Monday evening and taper off by Wednesday morning. A mix of sleet, freezing rain and even some rain is possible as well, depending on your location. The air will be marginally cold enough for frozen precipitation, so we may bounce back and forth between snow and a mix. More snow is forecast from Montreal north and west, with a mix south and east towards the Townships and US border.

The same storm  forecast to bring Montreal snow this week, produced a tornado in Hattiesburg, Mississippi on Saturday morning. Widespread major damage along with four fatalities was reported. (AccuWaether)

I am expecting at least 15cm for Montreal, with as much as 25cm in locations that remain all snow. Temperatures will be around the freezing mark for the duration of the storm. Another factor with this low will be very strong winds, in excess of 50km/h in Montreal on Tuesday. Expect difficult travel around southern Quebec, into eastern Ontario including Ottawa, as well as extreme northern New York and Vermont. Weather warnings will be likely for heavy snow and freezing rain. The entire mess moves northeast by Wednesday, with mild air and few flurries or showers behind the storm. It will turn much colder by next weekend, more on that after the storm.

Mild weekend followed by potential storm for Montreal

A developing coastal low on Monday may provide heavy snow or freezing rain in southern Quebec by Tuesday. (AccuWeather.com)

The weather remains spring-like across southern Quebec this morning, with temperatures more like March than January. The low was 0C (32F) at my home on L'Ile Perrot, the normal overnight low should be -15C (5C). Skies remain dull this morning, and it should stay that way for most of the day. If we are lucky, a few breaks of sun may occur this afternoon. Temperatures will remain mild, up to 4C (39F). The weekend will feature more of the same, plenty of low clouds, some drizzle or freezing drizzle Saturday and very mild temperatures.

SNOWSTORM
Our attention then turns to early next week, and the potential for a significant storm Tuesday. Models have been consistently showing a low pressure area developing off the Carolina's on Monday and heading northward towards southern New England. Abundant moisture would be available with any coastal storm, what is missing is any sign of arctic air that would really ramp up this storm. That being said, marginally cold air would exist west of the storm track, enough to produce significant wet snow or freezing rain in some locations. The idea of a storm has been consistent from run to run of the weather models, what has not been, is the type of precipitation expected or the track of the storm. At this time, it looks like Montreal would receive wet snow Monday night and Tuesday, along with strong winds, in excess of 50km/h. Accumulations are difficult at best to pin down, but we could be looking at more than 15cm (6 inches) of snow in Montreal and points south and east, with lesser amounts as you head west into Ontario. A messy mix of freezing rain and snow would fall over northern New England, eventually transitioning to rain as you move southeast towards the coast.

I will post additional updates this weekend via The Suburban blog and Twitter account. Follow the forecast closely if you have travel plans late Monday through early Wednesday.

Mixed precipitation followed by warmer weather

Just some of the widespread damage from a weekend of freezing rain, power outages and accidents over Kansas and Oklahoma. The storm is now moving into southern Ontario and Quebec. (Weather Nation Photo)

Low pressure, responsible for a significant ice storm across the US plains and Midwest this past weekend, will move down the St. Lawrence Valley on Wednesday. The system will be weakening as it does so, transferring its energy to a second storm center developing off the New England coast. The coastal storm will move into Atlantic Canada through Thursday.

The result will be a swath of light-to-moderate precipitation, currently falling over southwest Ontario, advancing into southern Quebec by Tuesday evening. Additional snow from the coastal low will be pushed northwest into Vermont and northern New York. Slightly colder air will remain in Montreal as a result of northeast winds caused by the coastal low. Montreal, and southern Quebec can expect 5 to 10cm of mixed snow and sleet from this evening into early Wednesday morning. Travel will be affected, as roads become snow-covered and slippery. Freezing rain warnings are in effect in Ontario, between Kemptville and Kingston, for 2 to 5mm of ice accretion today. Warnings are also in place for portions of the Adirondacks and Green Mountains for heavier snow tonight. Temperatures will remain below freezing today in Montreal, before a notable warming trend starts on Wednesday. The balance of the week will feature well above-normal temperatures for Montreal.

January thaw expected from coast to coast

Milder Pacific air is expected to dominate the weather pattern from coast to coast in Canada, through at least the middle of January. (AccuWeather.com Map)

What has been a rather gentle winter here in southern Quebec will continue this week, with a pronounced January thaw forecast. Mild Pacific air is forecast to dominate the balance of the month of January from coast to coast, with the arctic air briefly retreating back north. High pressure is in control to start the week, with sunshine and mild temperatures of 1C (33F) forecast for Montreal. The normal high for January 16 should be -6C (21F), with a normal low of -15C (5F).

Before the thaw arrives in full force, we will have to deal with low pressure and a warm front that have been producing widespread freezing rain across portions of the US plains. The ice storm has caused power outages and numerous accidents from Oklahoma into Kansas. The front will arrive late Tuesday, with a messy mix of snow and freezing rain. Amounts may warrant advisories or warnings, but none have been issued at this time. Temperatures will be mild throughout the upcoming week, with highs generally from plus 1 to 4C (33 to 39F), and overnight lows from -3 to -5C (23 to 27F). Once the precipitation ends on Wednesday, we can expect partial sunshine and warm temperatures well into next weekend. Enjoy the break from the winter cold, because indications are that February will be much more winter-like than the previous months so far this season.

Some of the large "parking lot" piles of snow around the city, like the one shown above in St. Laurent, will begin to melt a little this week. (ValleyWX)

Another messy winter storm for Ontario and Quebec

Low pressure will move across the central Great Lakes and towards James Bay on Tuesday. (AccuWeather)

Another winter storm is taking aim at southern Quebec and Ontario late this evening. As with most of the storms so far this winter, the system will be passing well north and west of Montreal. This will place the entire region on the warm side of the storm. Monday was very cold across southern Quebec, with the morning low here on L'Ile Perrot at -23.4C (-10F). The cold air remained with us for the entire day, but should moderate overnight and Tuesday. The temperature will rise above 0C on Wednesday in Montreal, and may be as warm as 5C (41F) on Thursday.

 Low pressure will move across the upper Midwest and into the central Great Lakes. An elongated warm front will approach southern Quebec on Tuesday, with snow developing by afternoon and persisting to around midnight. A quick 5 to 10cm is possible in Montreal, with greater amounts north of the city. Precipitation will mix with rain late Tuesday night before tapering off on Wednesday. Widespread winter storm warnings and winter weather advisories are currently in effect for southern Quebec, Ontario and northern New York. No warnings have officially been posted for Montreal.

Another factor with this storm will be very strong  south and southwest winds. The wind will increase quickly on Tuesday and gust to 70km/h in the St. Lawrence Valley. Even stronger winds, over 90km/h, are possible in the Richelieu and Champlain Valleys. Yet another storm will arrive Thursday, with more rain forecast for Montreal, before cooler air arrives Friday.

Storm leaves thousands without power in Quebec

Sanding on L'Ile Perrot Wednesday afternoon, after close to 15mm of freezing rain and 10cm of wet snow fell. (Valley Weather Photo)

A fierce combination of freezing rain and heavy wet snow, followed by winds in excess of 80km/h, have left thousands without power in southern Quebec. The winter storm dumped nearly 20mm of ice on the region, followed by as much as 15cm of wet snow. Close to 70,000 homes were left in the dark, most north and west of Montreal. Hydro Quebec has been working around the clock, with nearly 300 crews on the job. This morning the number is down to 35,000 customers. That amount was actually lower before a potent cold front arrived last evening. The utility expects most homes to be back online by the end of today. However, that will depend on new outages caused by the strong winds. Winds in southwest Quebec have been gusting from 50 to 70km/h. A peak gust of 86km/h (52 mph) was reported at Trudeau Airport, and 85km/h at St Hubert. The winds will eventually back off today below 40km/h by noon. The strong winds are generating intense snow squalls off Lake Ontario, some of which may meander down the St. Lawrence Valley. We may see more scattered flurries today, with a couple of centimetres of snow possible. If you have travels along Highway 401 towards Kingston, keep this in mind. Heavy snow squalls are likely with snow covered roads and reduced visibility.

Much colder air has arrived as well, -9C (16F) with a windchill of -19C (-2F) at 7 A.M. The colder weather is with us into the weekend, in some cases dropping below -20C. By the middle of next week, another storm will arrive, unfortunately with another messy mix of rain, freezing rain and snow.

Wide variety of precipitation across southern Quebec

Arctic air will advance across most of Canada, and into the US behind our current storm. Expect very cold but sunny weather into the upcoming weekend. (AccuWeather.com)

Depending where you happen to be in southern Quebec, you will experience several different forms of precipitation over the next 24 to 36 hours. A snowfall warning is in effect north of Laval, into the Laurentians. Expect 15 to 20cm of snow, mixed with sleet or freezing rain at times across central Quebec. In Montreal and Laval, mixed precipitation will start this morning, gradually changing to rain and back to a rain snow mix overnight. A slushy 5cm may accumulate. Needless to say, travel will be impacted today across the region.

Freezing Rain Warning
In the immediate St. Lawrence Valley, including L'Ile Perrot, Vaudreuil and Valleyfield, freezing rain will start this morning and change to rain by evening. Several millimetres of ice are possible. A freezing rain warning has been issued for this region of Quebec, as well as most of northern New York and eastern Ontario. Twin low pressure areas will move north from the southern US towards the Great Lakes, and eventually pass east of Montreal. Colder air will return on the backside of the storm, changing all precipitation to snow late tonight, before ending Wednesday. Several additional centimetres of snow are possible. Gusty west winds will also develop late tonight in Montreal, in excess of 50km/h, and continue into Wednesday. The temperature today and tonight will be close to the freezing point in southern Quebec, before dropping on Wednesday night down to -10C (14F). Clear skies and much colder weather will return to end the week, with lows as cold as -18C (0F).

More freezing rain for southern Quebec and Ontario

An icy mix of rain and snow is expected to start the week in Ontario and Quebec. Arctic air follows the storm by Wednesday. (AccuWeather)

Another winter storm is on the horizon for southern Quebec. A complex weather pattern, with multiple low pressure areas, will yield a wintry mix of precipitation, starting after midnight Monday in Montreal. Today will be partly cloudy and seasonable with temperatures near -5C (23F). Overnight, snow mixed with freezing rain will start from west to east, with temperatures rising towards the freezing point by Tuesday morning. At this time, precipitation is expected to change to rain from Montreal south into New York and New England. Isolated pockets of freezing rain will persist in metro Montreal and northwest into the Ottawa Valley. Freezing rain warnings have already been posted across eastern Ontario. I see no reason why the warnings won't be extended into Montreal and southern Quebec later today. Mainly snow is expected north of Montreal, across the portions of the Laurentians towards Quebec City and points north.

Cold air will filter in behind the storm on Wednesday, changing any precipitation back to snow, before ending. Expect very icy and changeable road conditions from late Monday through Wednesday across the St. Lawrence Valley. Cold air returns for the balance of the week, with clearing skies, and temperatures in the minus teens for lows and around -10C (14F) for highs.

Snow for southern Quebec to welcome 2017

Crawford Street in Verdun during the heavy snow that fell on Thursday. More snow is expected today to close out 2016. (ValleyWeather Photo)

Happy New Year

It is hard to believe, but another weather year is behind us. Environment Canada Senior Climatologist, David Phillips has posted his annual list of the top ten Canadian weather events for 2016. Of no surprise, leading the way is the Fort McMurray wildfire, followed by the record warm winter and La Nina. The entire list can be viewed at this link HERE.

SNOW to welcome 2017

Montreal will end the year on a rather snowy note, with 10 to 15cm falling on the region Thursday, and more snow forecast today. Thursday's snow was followed by gusty winds, in excess of 60km/h on Friday. The wind and fresh snow caused widespread blowing and drifting across southern Quebec highways. The wind is calm this morning, but it is cold, at -16C (4F) here on L'Ile Perrot. This same winter storm crossed New England and Atlantic Canada. Heavy snow, in some cases over 60cm, brought down power lines and closed highways. Winds were fierce with the system, gusting over 160km/h (100mph) on Mount Washington in New Hampshire. In Atlantic Canada, Wreckhouse, Newfoundland recorded a wind gust to 176km/h (109 mph) on Friday.

Our attention now turns to a clipper system moving across the Great Lakes into southern Quebec today. Snow will spread from the Ottawa Valley this morning, into Montreal by noon. The snow will persist into the overnight, with 10-15cm expected across the St. Lawrence Valley. This will create snow covered and icy roads for New Years Eve travels. If you are planning to drive tonight, be prepared for changing weather conditions. If you plan to drink, leave the car at home.

A special weather statement covers this snow event in Ontario, with a winter weather advisory in effect for northern New York. Temperatures will be cold today, slowly warming to the freezing point by early Sunday morning. Skies will clear for Sunday, but another storm is on the way for late Monday. This next system will bring a round of freezing rain and rain to Montreal.

Powerful winter storm to graze Montreal - hit Townships hard

Strong low pressure will move into Maine on Friday. Montreal will be on the western edge of the storm, with 10 to 15cm of snow forecast.

Strong low pressure is forecast to rapidly develop off the middle Atlantic coast Thursday, and move into southern Maine by Friday. At this time, the low pressure center is forecast to bomb out, lowering the central pressure dramatically in less than 24 hours. A swath of very heavy snow will impact the Eastern Townships of Quebec, as well as New Hampshire, Maine and central New England. Some locations may see well in excess of 30cm (1 foot) of snow by Friday afternoon. Expect travel delays across the entire region. Warnings are in place from New York State into Atlantic Canada.

Montreal will be on the western edge of the storm, with 10 to 15cm of snow expected by Friday morning. The bulk of the snow will fall late Thursday through midnight.Winds will increase late Thursday into Friday, with gusts from 40 to 70km/h likely in the St. Lawrence Valley. These winds will cause blowing snow, making travel dangerous east and southeast of Montreal. Travelling along Highway 10 towards Sherbrooke will become very dangerous late Thursday, if not impossible. Temperatures will remain below freezing throughout the period, with lows into the minus teens tonight and highs Thursday and Friday near -3C. More snow is expected on Saturday as another low pressure area approaches from the Great Lakes.

Messy travel weather expected on Boxing Day

Most of southern Quebec will enjoy snow for Christmas this year. This is in stark contrast to the record warmth and snow less landscape in 2015.

Merry Christmas and Happy Holidays, please drive safely.

Weak low pressure moved across southern Quebec on Saturday, with 2 to 5cm of wet snow across the region. Temperatures were very mild, above freezing near 3C (38F) in Montreal. High pressure will move into Quebec overnight, with clearing skies on Christmas Day, along with much colder temperatures, around -7C (19F).

Clouds are expected to increase Christmas night, it will be cold, with overnight lows near -14C (7F). By Monday, a strengthening winter storm will move from Colorado into the western Great Lakes and eventually central Quebec. This storm will produce very dangerous weather from northwest Ontario into southern Manitoba and the Dakotas. Blizzard conditions are forecast, with 70km/h winds and up to 30cm of snow into Boxing Day.

The storm will push a warm front into the St. Lawrence and Ottawa Valleys on Monday afternoon. After a very cold start to the day Monday, warm air will surge into the region. Precipitation will start in southern Ontario and spread into southern Quebec. At this time, Montreal and Ottawa can expect snow mixed with freezing rain Monday afternoon, changing to rain by Monday night, as the temperatures warms above freezing at the surface. On Tuesday, precipitation will end with dropping temperatures. Travel will likely be impacted in southern Quebec late Monday, with the potential for several hours of freezing rain. Weather warnings may be needed for a portion of our area. Further north, closer to the storm track, mainly snow will fall. Briefly looking ahead, Tuesday and Wednesday will be good for travelling, before another system brings snow on Thursday to Montreal.

Another mild Holiday Season expected in Montreal

While the weather in Montreal won't be as frigid as it has been over the last week, it won't be as warm as last Christmas either. Expect mild temperatures, close to the freezing point, with scattered flurries or showers. A storm is possible by Boxing Day.

Winter Solstice
The Winter Solstice occurred at 5:44 AM this morning, which means the amount of daylight slowly begins to increase moving forward. That is definitely something to look forward to on these dark, cold days of December. All the forecast models are pointing to a rather active weather period to end the year, but also a very mild one as well. While Montreal can expect above-normal temperatures over the next week to ten days, it will not be as mild as the record-breaking warmth we had last Christmas. To refresh your memory, the temperature reached 17.2C (63F) last December 24th. That was followed by 7.8C (48F) on Christmas Day.

Holiday Travel Forecast
This year, we are looking at a mild, southwest flow of air, producing temperatures from 0C to plus 3C (32F to 38F) for daytime highs, and around -5C (23F) for overnight lows, both well above the long-term average for the dates. The normal high and low should be -4C (25F)  and -12C (10F) respectively. As far as active weather is concerned, a series of weak low-pressure areas will impact Quebec and Ontario through Friday, with some light snow or flurries at times. Light accumulations of 2 to 5cm may occur, especially Thursday. Christmas Eve, Chanukah and Christmas Day look excellent for travel at this time, with mild temperatures and dry conditions across southern Quebec and Ontario. On Boxing Day, a much stronger low-pressure area will move from Colorado towards the western Great Lakes. This system has the potential to produce a snow-to-rain mix here in Montreal, with perhaps an extended period of freezing rain for some locations. The developing storm will have to be monitored closely for the exact track and temperature profiles as it moves east. I will post updates into the weekend on this potential storm, which will likely delay travel through the central portion of the country and perhaps even Quebec.

Another shot of arctic air but milder weather for Christmas

Plowing operations in Lasalle on Saturday, after a quick 5 to 10cm of snow fell across southern Quebec. The cold temperatures made roads extremely slick. (ValleyWX)

Low pressure is moving along the St Lawrence River this morning, with a trailing cold front charging across Ontario. Between 5 and 10cm of snow fell Saturday, followed by a prolonged period of mainly freezing drizzle here in Montreal. The heavier precipitation has remained south of the international border. That being said, we have a glaze on everything this morning in southern Quebec, including roads and sidewalks. The power grid seems to be ok so far, with a little more than 1300 customers without electricity according to Hydro Quebec.

The current temperature in Montreal remains chilly, as I expected it would be. Cold air is very difficult to dislodge form the St. Lawrence Valley. The high today will reach -4C (25F) this morning, before the cold front arrives. Temperatures will rapidly fall afterwards, reaching -21C (-6F) by Monday morning. Gusty northwest winds will develop as well, up to 50km/h, producing wind chill values close to -30C (-22F). The freezing drizzle currently falling in Montreal, will change over to light snow and end by 1pm. Skies will slowly clear out this afternoon. Monday will be sunny and cold, with a high temperature of -14C (7F). Milder weather is expected leading up to Christmas Day, but with a chance of more snow by Thursday.

Freezing rain warning for Montreal

Freezing rain is forecast for Montreal tonight into Sunday. (ValleyWX Photo)

Freezing Rain Warning for Montreal.

If you have travel over the next 36 hours, prepare for a wintry mix of precipitation, no matter which direction you are heading in from Montreal. An elongated warm front is producing light to moderate snow in the St. Lawrence Valley this morning. Montreal can expect 5 to 10cm, before the snow tapers off this afternoon. Low pressure arrives later this evening, with another round of precipitation, this time in the form of freezing rain. The temperature, currently at -14C (7F) in Montreal, will rise very slowly towards the freezing point by early Sunday morning. At this time, 5 to 10mm (0.2 to 0.4 inches) of ice is forecast. This amount should not be enough to damage trees or power lines, but more than enough to ice over roads and sidewalks. A freezing rain warning is in effect for the St. Lawrence Valley from Brockville, Ontario to Montreal.

North of the valley, mainly snow is expected, with storm accumulations approaching 20cm in Ottawa and across the Laurentians. Snowfall warnings are in place for those locations. South of the city towards the US border, a messy mix changing to rain is expected, as the temperature briefly rises above the freezing point. The entire cocktail will freeze-up rapidly Sunday afternoon, as an arctic front plows across the region. By Monday morning, frigid temperatures return, with lows between -18C and -25C (0F to -13F) in eastern Ontario and southern Quebec. Flash freeze conditions are likely Sunday afternoon with rapidly dropping temperatures.