Saturday, June 19, 2010

Thunderstorms possible today

Just a quick update on this steamy Saturday. Clouds and winds are on the increase ahead of a cold front moving southeast from Ontario. I expect showers and thunderstorms to develop anytime after lunch from Ottawa west and then slowly press across the St. Lawrence Valley and into upstate New York and the Champlain Valley by evening. Some of theses storms have the potential for very strong winds close to 100km/h, hail and torrential rains, as much as 50mm. So far a small line of storms has developed west of Ottawa in a line south towards Kingston. Temperatures are very warm at 27C in Montreal and surrounding regions with humidex values close to 33C.

Surface winds ahead of the cold front are expected to increase from 30-50km/h.

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