…A WINTER STORM WARNING is in effect for Adams, Franklin, Lancaster, and York Counties beginning 4am Tuesday through the evening for the potential of 4-8” of snow in spots…
An arctic front continues to sag south bringing with it another Arctic blast to the area. Temperatures will fall from the 20s after midnight to the teens by morning.
Another fast moving clipper heads in but this one is accompanied by stronger upper level energy. It will ride along the arctic boundary, which drops south tonight, and moves off the coast strengthening as it does so. This development begins right over us, which means we’ll likely see some light snow as it begins to form, with moderate snow picking up through the day. For now, we’re looking at 4-8” along the southern counties bordering Maryland, in around the PA Turnpike with 3-5” and further north 1 to 3”. A shift in the storm track north or south may adjust snow amounts north or south so please keep that in mind. A lot may happen overnight.
REST OF WEEK
The arctic chill remains for several days with single digits lows and highs only in the 20s. Breezy winds will make it feel much colder as wind chill values are likely to run in below zero to the single digits. Thursday there may be a quick moving system that could deliver some light snow to the area.
By the weekend, temperatures should warm up a bit closer to 30°. Another clipper system arrives for Sunday bringing the chance for light snow late in the day towards evening.
COLD WEEK IN HISTORY
On a side note, the past few days including tomorrow, marks the coldest stretch in history. Tomorrow’s record low of -22 below is the all time coldest low ever recorded at Harrisburg International Airport since records started being kept back in 1889.
MaryEllen Pann, Chief Meteorologist
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