Dam!! From Summer to Winter

One of the joys of living on the East Coast – especially this time of year – are back-door cold fronts.  They’re prevalent most of the year, but in the spring, when summer-like heat from the south often borders on winter’s lingering grip to our north, they often gather a head of steam (or mist if you will) and come roaring down I-95, resulting in crazy temperature contrasts both in time and by region.  Today, a very strong backdoor cold front will begin pushing into the region late this afternoon, arriving in northeastern MD first, accompanied by a stiff east wind and rapidly falling temperatures.  We’ll go from the 70s (perhaps low 80s, especially in the southern portions of the region) to 50s – even 40s – after the front comes thru.  Tonight will be a total reversal of last night’s summer-like sweat-feast; cold, windy, damp… with rain by morning as the main cold front approaches from the west.  Ironically, the air behind the main cold front will actually be warmer than the air behind our back-door cold front (Dam!!)

The NAM surface temperature forecast chart for 8 pm Thrs - courtesy of the Penn State University's E-Wall (Go Penn State!!) -  depicts a sharp temperature gradient from northeast to southwest.  The cold air will continue to push west and a bit farther south overnight as the back-door cold front slips south and stalls over central Virginia.

The NAM surface temperature forecast chart for 8 pm Thrs – courtesy of the Penn State University’s E-Wall (Go Penn State!!) – depicts a sharp temperature gradient from northeast to southwest. The cold air will continue to push west and a bit farther south overnight as the back-door cold front slips south and stalls over central Virginia.


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