Monday, August 09, 2010

Another humid Monday

Sounds like a song, or a broken CD if you will, it's just another humid Monday. The difference between dew point temperatures on Friday and Sunday was staggering. Last Thursday we were in the tropics with dew points near 22C, that lowered to the 7C range by Saturday before surging back up to near 20C yesterday and this morning. The air was so dry and crisp Friday and Saturday that it really felt like fall. I did not like it, way to early for this awesome summer of 2010 to draw to a close. The cool air mass that surged in behind Thursdays cold front left single digit overnight lows and a real sense that we are on borrowed time. However Sunday brought a return to the high humidity and thunderstorms as a warm front lifted north across the region. The front was ahead of schedule as I expected it to arrive today. We are now into the warm and humid air once again with the risk of showers and thunderstorms today and Tuesday. It will clear out for the middle part of the week but remain warm, near 27C across the region. The really hot air will remain to our south across the middle Atlantic and into the deep southern US.

That warm front yesterday brought quite a few heavy downpours and embedded thunderstorms. Heavy rain was the main threat with 49.6mm at Wiarton, Ontario, 35.5mm in Kemptville and 20mm here in Montreal at Trudeau Airport.

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