Last Year’s Third Big Snow

Upper Level Map 7:00am February 8, 2010...click to enlarge

Upper Level Map 7:00am February 9, 2010...click to enlarge

Upper Level Map 7:00am February 10, 2010...click to enlarge

Surface Map 7:00am February 8, 2010...click to enlarge

Surface Map 7:00am February 10, 2010...click to enlarge

The third major storm of the 2009-2010 winter season rolled through the region on February 9th and 10th.  We’ve posted the weather maps that show the meteorological set up that brought the storm.  A low pressure system in the upper levels of the atmosphere over the Dakotas on the 8th combined with a weak trough of low pressure over New Mexico and consolidated into one powerful upper low over Iowa on the 9th.  This upper level system then tracked into West Virginia on the 10th.  The upper level systems initially produced two surface lows, one over Minnesota, and the other over west Texas on the 8th.  These two lows combined into one powerful storm off the Delaware coast by the morning of the 10th.

In the wake of the storm, snowfall records for the area were completely rewritten.  When combined with the blizzard that swept through just four days earlier, three to four feet of snow covered most of central Maryland on the morning of February 11, 2010.  By the end of the month these new Baltimore snowfall records were established:

2nd Snowiest December:  20.1″, December 2009 (20.4″ in Dec. 1966)

Snowiest single month:  50.0″, February 2010 (old record: 40.5″ in Feb. 2003)

Snowiest winter season:  77.0″  2009-2010 (old record: 62.5″ in 1995-’96)

 

John Collins & Tom Tasselmyer

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One Response

  1. Hi John and Tom, thanks for the great information. I wanted to invite you, and others, to check out ChaserTV.com for live streaming video of weather events. Thanks!

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