Thursday, March 10, 2011

Heavy Rain Warnings

Radar continues to show an expanding area of heavy rain moving from south to north into the St. Lawrence Valley at 9pm. Montreal has had steady rain most of the day after the 15cm of snow that fell overnight. The combination of melting snow and falling rain has created lots of flooding on area roads. Transport Quebec had to close sections of highway and off ramps in the city to remove accumulated water this afternoon. Flooding will continue to be a problem into the overnight as the rain continues. The entire region of southern Quebec and eastern Ontario is under heavy rainfall warnings, with 25-50mm (1-2 inches) of rain forecast. Strong low pressure over the mid Atlantic region will lift north into New York on Friday drawing mild moist air northward. Temperatures will warm to plus 4 to 6C range along with strengthening southeast winds, especially across Vermont and New York and southeast of Montreal. Heavy rain in Vermont and New York has prompted flood watches in those areas with ice jam flooding a strong possibility.

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