Wednesday, July 22, 2009

Tropical moisture streams north

High pressure over Bermuda is blocking weather systems from moving east creating a flow of tropical moisture flowing into the northeastern US and Canada. Heavy rain warnings have been posted for Nova Scotia and New Brunswick. The threat for heavy showers and thunderstorms is present for Montreal and eastern Ontario as well right through the weekend. The pattern shows no signs of breaking down right into next week as our dismal summer continues. It will be warm and muggy and there is the chance for numerous sunny breaks, but it won't be that perfect summer weather we are all waiting for. This month so far the area has had less than 50% of the normal hours of sunshine. Montreal has recorded around 130 hours of sunshine, well below the average of over 270.

That tropical moisture will also affect New England where flooding concerns are very real for the next few days. The system of concern in the Atlantic will be watched for further development over the weekend.

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