6:00 AM | *****Threat continues for biggest snowfall of the year between late tonight and late Thursday*****

6-Day Philly Forecast

Today

Becoming milder with occasional rain, some patchy fog possible, highs reaching the upper 30's

Tonight

Rain early changes to sleet and then to accumulating snow after midnight, turning colder with lows by morning in the low-to-mid 20’s

Thursday

Periods of snow with significant accumulations on the order of 6-12 inches before it winds down, quite cold, highs in the mid 20’s early in the day

Thursday Night

Chance for snow early then becoming partly cloudy, brutally cold, single digits for lows

Friday

Mostly sunny, very cold, mid 20’s

Saturday

Mostly sunny, still cold, but not as harsh, upper 30’s

Sunday

Mostly sunny, cold, near 40 degrees

Monday

Mostly sunny, not as cold, low 40's

Discussion

Today promises to be a milder day with periods of rain and some patchy fog possible; however, the more important story will be the arrival of another Arctic cold frontal system. This front will pass through the region late in the day and this will begin a downward trend in temperatures that could set the stage for a snowstorm in the I-95 corridor later tonight and Thursday. Once the Arctic front reaches the east coast, it will stall out due to the alignment of the upper-level winds which will prevent any significant movement to the southeast. At the same time, copious amounts of moisture will begin heading northeast along the stalled out frontal boundary zone as colder air pushes in from the northwest. The result could very well be the biggest snowfall of the year for the Philly metro region with 6-12 inches on the table between late tonight and late Thursday.

Video

httpv://youtu.be/_Jx_2Rjhk24