7:15 AM | Wintry mix a threat on Wednesday morning in northern and western suburbs

6-Day Forecast

Today

Mostly sunny, milder, mid-to-upper 50’s

Tonight

Partly cloudy, windy, chilly, low-to-mid 30’s

Tuesday

Mostly sunny, windy, colder, mid-to-upper 40’s

Tuesday Night

Mostly cloudy, chance for a light mix of snow, sleet and/or freezing rain late, cold, low 30’s

Wednesday

Cloudy, cold, wintry mix of snow, sleet, and/or ice possible in the morning with rain most likely in the afternoon, upper 30’s

Thursday

Mostly cloudy, still cold, chance for some rain, possibly mixed with ice, low 40’s

Friday

Partly sunny, chilly, mid 40’s

Saturday

Mostly cloudy, chilly, chance for some rain, upper 40’s

Discussion

After a quiet start to the week, our recent active weather pattern will return with a significant storm system to deal with on Wednesday and Thursday and then yet another low pressure area this weekend. High pressure will be in control today and temperatures will climb way up into the 50’s. In fact, today will likely turn out to be the warmest day of the week. Weak low pressure located over the Great Lakes this morning will swing a cold front through the region in the overnight hours paving the way for a chillier day on Tuesday. Canadian high pressure will then build into the region by Tuesday night and it will set up anchor in southeastern Canada by the middle of the week. This cold high pressure system will play a key role in the mid-week time frame as a cold air damming situation will develop sending cold, low-level air down the I-95 corridor. At the same time this high sets up shop in southeastern Canada, a moisture-rich storm will pull out of the Rockies and head towards the Great Lakes. This storm will then grind to a halt and gradually weaken as a secondary system tries to develop along the Mid-Atlantic coastal region by Thursday. This complex combination of the cold, strong high pressure system to the north and the double-barrel low pressure system will set the stage for a long-duration event from Wednesday into Thursday with significant snow and/or ice likely across northeastern PA, NW NJ, Lower Hudson Valley, NY and southern New England. In the immediate Philly metro area, a wintry mix is likely Wednesday morning; especially, in the northern and western suburbs where slippery spots can develop. Stay tuned.

Video

httpv://youtu.be/5w1OTYCzVQU