Thursday, July 22, 2010

Calm weather today

Yesterday's thunderstorm activity produced hail and strong winds in Ontario and Quebec. The power was out in many regions and trees were snapped north and east of Montreal. The photos are of lightning in Sarnia and hail near Kingston, ON. (www.theweathernetwork.com photos)

Numerous heavy thunderstorms prevailed region wide yesterday with the strongest activity north of Montreal from the Ottawa Valley across the Laurentians and then east of Montreal into the Townships. A second wave of severe weather moved across the northern counties of Vermont and New York. Both these sets of storms triggered heavy rain, dangerous lightning, hail and very strong winds. One inch hail was reported in St. Sauveur along with flooding. Sorel and Tracy had over 65mm of rain with the storms. More storms developed in eastern Ontario and moved across the St. Lawrence River near Cornwall before moving into Franklin and St. Lawrence Counties in New York. Late last evening another line of storms developed over the Ottawa Valley again and moved into Montreal between 11:30 and midnight. The storms produced about 12mm of rain and some gusty winds with vivid lightning here in Montreal, but no severe weather was reported. The bulk of the heavy weather remained well outside the metro region yesterday. The storms were well forecasted yesterday by Environment Canada and the National Weather Service with plenty of advance warning.

The weather will be much calmer today with a mix of sun and clouds and temperatures near 27C. Starting late Friday and into the weekend, low pressure and a frontal system will move down the St. Lawrence Valley. There will be an increasing risk of showers and thunderstorms with the possibility of more severe weather by Saturday afternoon across the area. It will be mostly cloudy and humid the entire weekend with temperatures near 27C.

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