Friday, September 23, 2011

Weekend Update

From - low pressure stalled to our west is providing warm humid air here in Quebec and more heavy rain for the I-95 corridor.

Fall has arrived as of 5:05am this morning with lots of dense fog around. A very moist and warm air mass remains well established over the region. Low pressure is stalled to our west over the Great Lakes with a steady stream of southwest winds bringing in the unseasonable warmth and humidity. All weekend and well into next week, temperatures will remain well above normal. For the near term we have dense fog this morning across the region, especially south of the city and into New York and Vermont. The National Weather Service has posted a Dense Fog Advisory until 9am this morning. Visibility is as low and 1/8 of a mile. Here on Ile Perrot we have some mist and fog but is otherwise clear. Most of the upcoming weekend will be rain free and very warm for late September. Temperatures will range from 20 to 25C (68 to 77F) with clouds and sun mixed and the outside chance of a shower today and Saturday. Sunday will be sunny and warm. Temperatures at night will only be in the 14 to 17C range (56F to 63F).

The bulk of the moisture will remain well south of Quebec across the middle Atlantic and northeast. The same dynamics that will be pumping warm and humid air into our region will also produce steady and at times heavy rain in that area. Flash flood watches are in effect from Virginia to New Jersey. This is the same area hit hard by Irene, and with up to 3 more inches of rain possible, more flooding is expected.

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