Thursday, January 22, 2009

Snow Squalls

Blowing snow along Highway 15 south near the St. Lawrence River today.

A sharp arctic front is slipping south across the Ottawa Valley this afternoon heading towards the St. Lawrence Valley and Montreal. The Quebec Weather Centre has posted a snow squall warning for most of southwestern Quebec. These are very similar to Summer thunderstorms. Quick bursts of precipitation with gusty winds. In this case it will be snow as the temperature is hovering around the freezing point at this hour. Look for the front to cross the region during the afternoon rush hour. Only a centimetre or two of snow will fall but with the gusty winds to 60km/h it could create poor travel conditions very quickly.

Eastern Ontario can also expect theses squalls from 4pm near Ottawa to 6pm along the 401.

Tomorrow another clipper will give 2-4cm of snow before an arctic high pressure moves in for the weekend with sunny skies and cold weather.

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