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A Winter Storm WARNING has been issued for part of the 6abc viewing area ahead of a storm expected to hit on Wednesday. The warning Western Montgomery, Upper Bucks and Northwestern Chester counties and all of Berks, Lehigh and Northampton counties.
A Winter Storm ADVISORY is posted for Philadelphia and Delaware counties, Southeast Chester, Southern Montgomery, Lower Bucks Counties along with Mercer, Somerset and Hunterdon counties in New Jersey
TONIGHT: We see cloudy skies. Rain arrives overnight from the south, between 3 and 6am We get to a low of 40.
WEDNESDAY: A coastal storm brings rain in the morning which changes to wet snow quickly in the morning for the northern half of our region. It's breezy with a high around 40 in Philadelphia in the morning with temperatures dropping into the 30s as the snow moves in. The precipitation ends in the evening, between 8 and 10 p.m. in most areas.
SNOW POTENTIAL: While the track of Wednesday's storm is not etched in concrete, the most likely scenario has the storm center close enough to the coast to cause problems, with rain changing to snow from about I-95 toward the NW during the late morning and afternoon. Wet snow accumulates 1-3" on both sides of the Delaware River with the immediate NW suburbs accumulating 3-6" during Wednesday afternoon and night. 6" or more could fall in the Poconos and the Lehigh Valley. The track and intensity of the storm and how much cool air manages to make its way to the surface will be key factors in whether we achieve the above accumulations, but our level of confidence in the above numbers is relatively high. A good deal of the accumulation will be on grassy surfaces, although roads could become affected by snow as well in areas that receive particularly heavy wet snow.
WHAT COULD CHANGE: If the storm tracks farther out to sea, or if colder air does not make as much of a push into the region as some models suggest, we will see far less snow and less precipitation overall. In this case, the impact of this storm would be minimal with lower snowfall amounts and less impact on roads. Given the importance of Wednesday as an extremely busy travel day, as well as the potential for compromised travel conditions, it would be best to plan on traveling early in the morning or later at night after the precipitation is over. Wednesday afternoon will be the worst time for travel.
THURSDAY (THANKSGIVING): The precipitation is over, but it's brisk and chilly. Look for partly sunny skies with temperatures in the low to upper 30s during the 6abc Thanksgiving Day Parade. The high is only 40.
FRIDAY: It's mostly sunny, brisk and cold for shoppers on Black Friday. High 39.
SATURDAY: Clouds and sun mix. It's still chilly. The high is 43.
SUNDAY: We expect a cool, partly sunny day with a milder high of 55. A shower is possible at night.
MONDAY: It's mostly cloudy and mild with a high of 52.
TUESDAY: Mostly sunny skies are likely. The high is 47
MONDAY: It's rather cloudy. The high is 46.