Monday, November 14, 2016

Mild and unsettled week ahead for southern Quebec

A rather weak coastal storm will produce clouds and much-needed rainfall for New England and portions of Quebec by late Tuesday. (AccuWeather)
High pressure remains in control of the weather across southern Quebec and eastern Ontario this morning. Gusty southwest winds continue today, as they have for the entire weekend. The wind has made the daytime temperatures feel slightly cooler, but also kept the overnight lows well above normal. I recorded an overnight low of 7.6C (46F) here on L'Ile Perrot, the normal low should be -2C (29F). Sunshine will be abundant today, along with a mild high of 12C (54F). Normally, we should reach only 6C (43F) for November 14. Winds should ease off a little, into the 20 to 30km/h range.

We have a rather active weather pattern on the horizon for the region. As mentioned, the week starts off nearly perfect, with widespread sunshine and mild temperatures. These conditions will persist into early Tuesday, before clouds begin to thicken. Low pressure developing along the east coast of the US will spread clouds and showers westward into southern Quebec late Tuesday and Wednesday. I don't expect a big rainfall event for Montreal, but it will be cloudy and showery through early Thursday. Temperatures will remain above normal for the week.

Skies will clear out by Friday, before the next weather system begins to impact southern Quebec into the weekend. The next storm will be much stronger and more typical of November. This low will develop over Colorado and move northeast into the central Great Lakes. Gusty southerly winds ahead of the storm will produce very warm weather for eastern Canada and the US. Even stronger winds on the backside of the storm will pull down the coldest air of the season so far into the northern plains. Clouds will increase next Saturday, with rain possibly changing to snow in some places by late Sunday. In advance of the storm, temperatures will be very warm Friday and Saturday in Montreal, but plummet on Sunday. This storm will bring the first major snowstorm of the season to the northern plains, southern Prairies and western Great Lakes into Friday. Heavy snow and near blizzard conditions are possible in North Dakota and southern Manitoba, including Winnipeg, by Thursday night.

No comments: