6:00 AM (Saturday) | ****Several inches of accumulating snow from mid-day Sunday into Sunday night...bitter cold to follow with zero degrees on the table****
Paul Dorian
6-Day forecast for the Philadelphia, PA metro region
Today
Mainly cloudy, chilly, a bit of rain, snow and/or sleet, the rain can freeze on some surfaces early in the day, highs near 40 degrees; S winds around 5-10 mph
Tonight
Mainly cloudy, cold, maybe a bit of rain and/or snow late, lows in the upper 20’s
Sunday
Mainly cloudy, breezy, colder, snow develops by the mid-day hours, snow can be heavy at times during the afternoon, lower 30’s for highs
Sunday Night
Mainly cloudy with snow winding down during the evening hours, total accumulations of 4-8 inches with isolated higher amounts, very cold, middle teens for late night lows
Monday
Brutally cold despite plenty of sunshine, windy, near 20 degrees for afternoon highs with much lower wind chill values; within a few degrees of zero for overnight lows
Tuesday
Mainly sunny, breezy, bitter cold, middle teens for afternoon highs with much lower wind chill values; within a few degrees of zero for overnight lows
Wednesday
Partly sunny, still frigid cold, chance of snow, mid-to-upper teens for afternoon highs; within a few degrees of zero for overnight lows
Thursday
Mainly sunny, not as harsh, middle 20’s for highs
Discussion
The Arctic front at the leading edge of a widespread brutally cold air mass will slide into the eastern states on Sunday and its progression will slow down across the southeastern states. Energy will rotate through an upper-level trough to a position over the frontal boundary zone and low pressure will form in this area of convergence. That low pressure system will then push northeastward into an increasingly colder air mass, and it can produce several inches of snow in the DC-to-Philly-to-NYC corridor from tomorrow into tomorrow night.
Total snow accumulations in the Philly metro region likely in the 4-8 inch range with isolated higher amounts and a starting time around mid-day (snow can be heavy at times during the Eagles-Rams game which begins at 3pm in South Philly). The higher amounts in this range will be on the northwestern side of the metro region and the lower amounts on the southeastern side. Bitter cold air will follow the snowstorm for the first half of next week and overnight temperatures are likely to flirt with the zero degree mark in some spots.
Meteorologist Paul Dorian
Arcfield Weather