7:00 AM | **"Clipper" system arrives tomorrow with some accumulating snow and it will be followed by bitter cold air for Sunday, Monday and Tuesday**
Paul Dorian
6-Day Philadelphia Forecast
Today
Partly sunny, very cold, highs in the mid 20’s
Tonight
Mostly cloudy, brutal cold, snow showers possible late, lows near 15 degrees
Saturday
Mainly cloudy, cold, some snow likely with possible accumulations of a dusting to an inch or two, mid 20’s
Saturday Night
Mainly cloudy, maybe a snow shower early, bitter cold, lows in the lower teens by morning
Sunday
Mainly sunny, frigid, breezy, upper teens for highs with even lower wind chills
Monday
Mainly sunny, brutal cold, mid-to-upper teens
Tuesday
Partly sunny, still frigid cold, low 20’s for highs
Wednesday
Partly sunny, very cold, chance of snow at night, mid-to-upper 20’s
Discussion
Our relentless Arctic cold weather will continue through next week and the lowest temperatures are likely still to come. A fast-moving “clipper” system will drop southeastward into our area by tomorrow and it can produce some accumulating snowfall in the Mid-Atlantic region despite its lack of available moisture. With cold air firmly in place, the "snow-to-liquid" ratios will be quite high (~20:1) and this may result in a dusting to an inch or two despite the limited "precipitable water" content. This “clipper” system will then usher in a fresh frigid Arctic air mass for Sunday, Monday and Tuesday and this will be an extremely cold period for much of the eastern US. In fact, temperatures around here could start the new year on Monday morning not far from the zero degree mark in many spots. Looking ahead, there may be another threat for snow during the middle of next week, but odds currently favor that potential system forming a bit too far off the coastline for any important impact around here. Stay tuned.
Meteorologist Paul Dorian
Vencore, Inc.
vencoreweather.com