Windy wet storm for Montreal by Friday

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Another storm system will impact the St. Lawrence Valley and southern Quebec late Thursday into Friday. Until then we are looking at much milder air in place today with perhaps our first high temperature above freezing in Montreal since January 18. There will be some wet snow today, not much accumulations, perhaps 1-2cm with a high of 1C (34F). On Thursday weak high pressure will be in place with partial sunshine before the clouds thicken by late in the day. Temperatures will again be mild with a high of 2C (36F) overnight lows below freezing to -3C (27F).

Another winter storm just missed Montreal on Tuesday with only 1-3cm of snow here. The storm pounded southern New England and Atlantic Canada again with as much as 30cm of snow. Above is Portsmouth, New Hampshire yesterday. Photo: Seacoast Online

Tomorrow night Montreal will begin to be influenced by strong low pressure that is forecast to develop over Colorado and move towards the central Great Lakes. A long warm front will approach Montreal with snow and freezing rain developing in the evening and lasting into the overnight from Montreal south and well into Friday north and east of the city. The wintry precipitation should change over to rain for most of us in southern Ontario and Quebec but areas north of the St. Lawrence Valley could see a prolonged period of freezing rain. Travel early Friday may be impacted. We are expecting 25mm of precipitation in various forms. I will try to nail down the amount and exact timing as the event draw closer. It will be mild on Friday with a high of 4C (39F). A strong cold front will sweep the area late on Friday with very strong and gusty winds and some isolated heavy rain showers. There may even be some thunder late Friday. This storm will become another big news-maker as the cold front produces some severe thunderstorms from the Ohio Valley into the deep southern US Thursday and Friday.