Tuesday, July 10, 2012

Great weather week

The waterfront in Cornwall, Ontario this past Sunday. Little rain, with the exception of thunderstorms, and sweltering heat, has left the grass a dry yellow. Only 70mm of rain has fallen since June 1. (ValleyWX Photo)
I noticed this morning a little blip in our perfect weather week as some thunderstorms have popped up along a weak disturbance in the atmosphere, near Cornwall/Massena. This very narrow line of storms is sliding into upstate New York and should not be a problem in southern Quebec. Montreal managed a very pleasant high of 25C on Monday with low humidity and just a perfect day all around. The trend is expected to last all week as high pressure crests over the area. As that high moves off shore by Thursday a warmer and more humid southwest flow will develop pushing temperatures into the low 30's. The threat for showers and thunderstorms will also increase by Sunday.

Of Note: It remains hot on the prairies today with highs forecast in the mid 30's. yesterday portions of interior B.C. approached 37C (100F), while Val Marie in Saskatchewan hit 36C. The heatwave in the eastern US has dwindled into the southeast as some relief works its way south. It remains warm everywhere, in many cases upper 80's into the 90's but not as oppressive as the triple digit heat of the last two weeks. More thunderstorms are expected along the frontal boundary across eastern Virginia and the Carolina's as the cooler and drier air works its way south.

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