Monday, June 15, 2009

Slow moving Thunderstorms

A Canadian Coast Guard ship moves west of the Champlain Bridge with a very slow moving thunderstorm as the backdrop. This storm has been slowly moving over the city for the past 3 hours.

An upper air disturbance spinning over eastern Ontario and southwest Quebec is producing big, slow moving thunderstorms today. One storm located over the Montreal area for the last three hours is slowly moving towards the southwest after moving northward across the south shore. This complex of storms has produced very heavy rain locally especially in the eastern part of the city. Flooding has closed several lanes on the Trans Canada Highway (40) near Ville d'Anjou. These storms should continue to dissipate as the evening moves along. Some storms may produce pea size hail, dangerous lightning and up to 75mm of rain in the slowest moving cells.
Flooding was also reported today in central Vermont. Flood Advisories are still in effect around Middlebury, Vt.
Skies will clear Tuesday and it will be sunny and warm through Wednesday.

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