The Thaw

With a high of 47F and a low of 32F, the average temperature at BWI-Marshall yesterday was 40F, and that ended a streak of 17 straight days with average temperatures below normal. Digging through the record books it looks to me like this was the longest stretch of below normal temperatures since late spring of 2005. From May 16, 2005 through June 3, 2005 we had 19 consecutive days with average temperatures below normal. The thaw is underway now, but don’t expect winter to give up easily. A few shots of cold air are still possible, as we will see on Friday, when a clipper passing north of here pushes a glancing blow of arctic air south into the mid Atlantic states on strong northwest winds. The 6-10 day temperature outlook from the Climate Prediction Center of the National Weather Service covers the period from Feb. 26th through March 2nd and it does show warmer than normal temperatures for much of the eastern U.S. But, the 8-14 day outlook, covering Feb. 28th through Mar. 6th, shows the warmer than normal temperatures are gone and more cold air begins to show up over the northern plains, great lakes and Ohio valley. That might signal another flip in the weather pattern and perhaps a cold and wintry start to March.

Tom Tasselmyer


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