Very Cold Friday

Snowy Wednesday morning in Beaconsfield, QC. ValleyWX Pic

Our roller coaster weather week continues along, with the greatest dip poised for tonight in Montreal and Ottawa and across the region. Yesterday Montreal reached 11C after a morning start with sub-zero temperatures and snow cover. The afternoon sun was warm and temperatures rebounded to well above normal. Today will be sunny and very warm once again on increasing southwest winds in advance of an arctic boundary. That front will cross the St. Lawrence Valley by 8pm this evening with showers and some snow squalls along it and a dramatic drop in temperatures. In a month that has been above normal almost everyday along with no sub-zero highs (very rare for March), tonight and tomorrow will feel frigid. The front will drop temperatures from today's high of plus 12C down to -10 to -13C overnight, a swing of almost 25 degrees. Along with the cold Arctic air will be strong winds from the southwest, backing to the northwest tonight and gusting to 50km/h producing noticeable wind chills. Any precipitation will freeze on area roads so keep this in mind while traveling. Friday will be sunny, but very cold, and perhaps our fist below freezing high for the month at -2C.

A quick wrap up of Tuesday's storm, it produced about 16mm of rain in Montreal with the heaviest rainfall southeast of the city. Lennoxville had 33mm and parts of Vermont over 50mm. Heavy snow fell north of Quebec City with Le Massif in the Charlevoix region recording 47cm. Winds gusted to 63km/h in Montreal, and 94km/h on Ile d'Orleans near Quebec City.