7:00 AM | ***Some snow tonight...major weekend storm to bring lots of precipitation...Arctic blast follows***
Paul Dorian
6-Day Philadelphia Forecast
Today
Increasing clouds, colder, highs in the lower 30’s
Tonight
Snow likely with accumulations by morning on the order of a coating to an inch or two, the snow could mix with light freezing rain towards daybreak, cold, lows in the upper 20’s
Friday
Cloudy early Friday then it should become partly sunny, not as cold in the afternoon, lower 40’s for afternoon highs
Friday Night
Partly cloudy, cold, mid-to-upper 20’s for late night lows
Saturday
Becoming cloudy, cold, snow likely in the afternoon which could become a wintry mix, upper 30’s; a changeover to rain is likely at night some of which can freeze on various surfaces
Sunday
Cloudy, brisk, cold, rain could change to sleet, freezing rain and then snow before winding down, upper 30's for highs, but temperatures should plunge late in the day and at night
Monday
Mainly sunny, blustery, bitter cold, mid-to-upper teens
Tuesday
Mainly sunny, quite cold, mid-to-upper 20’s for highs
Discussion
A cold and stormy weather pattern is getting locked in for the eastern US and there may be three different systems to deal with over the next week or so. Low pressure will head in our direction today and it’ll produce some accumulating snow around here tonight with a coating to two inches likely by morning. There is a chance that the snow changes to light freezing rain towards daybreak just before the precipitation ends. A much more significant and complex storm is going to impact the I-95 corridor this weekend and everything is on the table for this event including heavy rain, accumulating ice and accumulating snow. Precipitation is likely to begin in the afternoon on Saturday as snow or perhaps a wintry mix and there can be some accumulations before a likely changeover to rain at night. The rain could change to sleet, freezing rain and then snow on Sunday as colder air rushes in behind the system. In fact, a plunge in temperatures late Sunday following the departure of the storm can cause a quick freeze-up on many surfaces with potential hazardous conditions developing. The coldest air mass of the season so far will likely result in single digit lows by early Monday morning and highs may very well be confined to the teens to start the new work week.
Meteorologist Paul Dorian
Perspecta, Inc.
perspectaweather.com