Wed. 11 March 2009 analysis shows that the weather maker for the northeast is a deep low pressure system (central pressure 976 mb) moving over Northern Quebec. It is following a track typical for Colorado cyclones (see red arrow). The system formed east of the Colorad0 rockies on Tuesday evening, moving rapidly northeastward across Lake Superior to it's current position. An occluded front (purple) extends southward from the system into New York State at this time. An additional cold front extends to the Great Lakes. The counterclockwise circulation around the low pressure system indicates a northwesterly circulation behind the fronts, suggesting that the front will bring in colder temperatures to the northeast.
Wednesday, March 11, 2009
Passage of cold front: Overview
Wed. 11 March 2009 analysis shows that the weather maker for the northeast is a deep low pressure system (central pressure 976 mb) moving over Northern Quebec. It is following a track typical for Colorado cyclones (see red arrow). The system formed east of the Colorad0 rockies on Tuesday evening, moving rapidly northeastward across Lake Superior to it's current position. An occluded front (purple) extends southward from the system into New York State at this time. An additional cold front extends to the Great Lakes. The counterclockwise circulation around the low pressure system indicates a northwesterly circulation behind the fronts, suggesting that the front will bring in colder temperatures to the northeast.
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