More Cold and Possibly Some Snow

Fast moving, weak system passes south of Baltimore Thursday


European model: storm too far east for snow in Baltimore Sunday

U.S. model: storm close enough for snow in Baltimore Sunday

In Baltimore, temperatures for the first two weeks of December 2010 have averaged 5.4 degrees below normal.  The average high temperature at BWI-Marshall for December 1st through the 14th was 40.9 compared to the normal of 48.5.  The average low temperature for the same period was 25.9 compared to the normal of 29.1.  However, the cold air has only produced a trace of snow, officially measured at BWI-Marshall; that could change later this week.  Two pieces of energy are expected to peel off of a massive storm over the Pacific northwest and track into the cold air covering the eastern U.S.  The first system is expected to be rather weak and fast moving, tracking south of Baltimore Thursday afternoon.  The second system may be a little stronger and wetter, tracking from the Rockies toward the gulf coast and then up the eastern seaboard Saturday night into Sunday.  The exact position of the weekend storm is uncertain.  Some computer models keep it well east of the mid Atlantic, taking the heavy snow out over the Atlantic Ocean.  Other models place it close enough to the coast Sunday morning to bring us a threat of accumulating snow.  As usual…stay tuned!

Tom Tasselmyer


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