Tuesday, September 10, 2013

Summer heat & big thunderstorms

A warm front along the US border has become the focus for heavy showers and thunderstorms this morning. They will taper mid day and then fire up again this afternoon. There is a risk of severe weather with heavy rain, hail and even the risk of isolated tornadoes over upstate NY and Vermont. Southern Ontario is already warm and humid with temperatures near 24C in Windsor on the way to 34C with humidex readings over 40C. Clouds will keep Montreal around 29C.

Where I am along the coast it will be warm and humid near 80F today and over 90F, perhaps record setting Wednesday. The entire region will see more strong storms Thursday as a cold front cuts across the area. More cold air will pour into the region on the weekend with temperatures plummeting from record setting to well below normal and frost.

Two tropical systems are in the Atlantic basin this morning, Gabrielle and Humberto. Tropical storm Gabrielle will brush Bermuda before it heads towards Atlantic Canada. Meanwhile tropical storm Humberto is way out in the Atlantic Ocean south of the Cape Verde Islands. If Humberto reaches hurricane status today, it will avoid a record breaking year for the latest hurricane to develop in any season. The previous year was 2002 when Gustav formed at 8am on September 11.
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