Snow And A Blast Of Arctic Air

Snow events at BWI-Marshall last winter vs. this winter through Jan. 19th

After a brief January thaw on Wednesday, during which the temperature touched 50° at BWI-Marshall for the first time since the 2nd day of the new year, more snow is headed this way and, perhaps, the coldest air of the winter so far.  This next snowmaker will be the 8th snow event of the season, which is keeping pace with the number of snow events as of this time last winter, but the storms this year have been much weaker as they move through our area.  At BWI-Marshall the first 7 snow events of this winter have produced just 4.7″ of snow, whereas last winter the first 7 events brought nearly 22″ of snow (mostly from the December blizzard).

Storm developing in Texas panhandle forecast to head east

Early estimate of snowfall Thursday night and Friday

The 8th event of this winter is taking shape over the central plains Wednesday night and is forecast to track through the deep south on Thursday, then turn northeast toward Virginia Thursday night and move rapidly toward New England early Friday morning.  The fast movement of this system will limit the amount of snow it can produce in Maryland, with most models indicating a quick 1-3″ of snow around central and eastern Maryland.  Mountain locations will get up to 6″ and some parts of northern Maryland may be see accumulations up to 4″ if the storm slows or rapidly intensifies as it is departing early Friday.

Forecast low temperatures Sunday morning

Forecast lows northeast PA and upstate NY Sunday morning

Forecast lows across Maryland Sunday morning

After the quick snowfall early Friday morning, the strengthening storm will draw some very cold arctic air out of central Canada into the the mid Atlantic states for the weekend.  Low temperatures Saturday night and early Sunday morning will likely go below -20° in the Adirondacks of upstate New York, drop below 0° in the Poconos of northeast Pennsylvania, into the single digits across southern Pennsylvania and western Maryland and reach the low teens in the Baltimore area.  That cold air mass might set the stage for yet another snowstorm late Monday into Tuesday of next week.

Tom Tasselmyer

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