Thursday, January 19, 2012

January 20th, 2012 Forecast

A clipper front will cross Pennsylvania and New Jersey tonight, bringing flurries and snow showers for folks from Philadelphia on north.  This system will exit in the predawn hours on Friday morning, with tomorrow shaping up as a nice day as we are in between storm systems.   Saturday's system will bring a myriad of precipitation types to the region, with the best chances for more frozen than not over the Poconos.  The big question...and one that may not be resolved until the system actually moves in...is how long frozen precipitation holds before nonfrozen precipitation takes over, especially in the Pennsylvania suburbs.  We'll try to unlock that question later on today...

However, tonight's clipper may bring a coating of snow north of the city...best chances of that are in the upper portions of Bucks and Montco, the Lehigh Valley, and the Poconos.  Flurries are possible most elsewhere, with perhaps a sprinkle instead of a flurry in Southern Delaware.  Lows will range from the 20's north to around 30 city and south.  Friday is going to be pretty nice as far as midwinter is concerned -- mostly sunny skies but a bit breezy at times.  Temperatures will top out in the mid 30s northwest, upper 30's in the city, and around 40 south and east of Philadelphia.   West breezes will range from 10-15 mph, perhaps gusting to 20 in spots.



Weekend Sneak Peek:  Saturday's system moves in during the predawn hours and exits during the afternoon, bringing a mixed bag of snow that transitions over to sleet/icy rain in the burbs before ending perhaps as rain as far north as the Lehigh Tunnel and Blue Mountain.   We'll talk more about accumulations later this evening. Sunday is shaping up as a variably cloudy day as we transition to a milder day on Monday with another storm system approaching.  Clouds will linger around, especially in the afternoon on Sunday, with temperatures in the mid 40's.