7:00 AM | *Continued cloudy, damp and cool with occasional showers as low pressure deepens off the coast*
Paul Dorian
6-Day forecast for the Philadelphia, PA metro region
Today
Mainly cloudy, breezy, cool, occasional rain and some of it can be heavy at times, maybe a rumble of thunder, highs not far from 60 degrees
Tonight
Mainly cloudy, cool, chance of showers, lows near 50 degrees
Thursday
More clouds than sun, breezy, cool, slight chance of showers, mid 60’s for afternoon highs
Thursday Night
Mainly cloudy, quite breezy, cool, chance of showers, near 50 degrees for late night lows
Friday
Mainly cloudy, quite breezy, cool, lower 60’s
Saturday
Partly sunny, cool, upper 60’s; chance of showers at night
Sunday
Mainly sunny, cool, mid-to-upper 60’s
Monday
Mainly sunny, cool, mid-to-upper 60’s
Discussion
A very active weather pattern across North America will bring a tremendous early season shot of cold air and accumulating snow to the region from the Rockies to the Northern Plains over the next few days and two systems off the east coast will merge into one powerful storm just off the Mid-Atlantic/NE US coastlines. The cold front that passed through the Mid-Atlantic region earlier this week has stalled out over the western Atlantic and low pressure has formed along its boundary zone. Another low pressure system has formed a few hundred miles off the South Carolina coastline and is already producing winds near tropical storm strength. Ultimately, this second system is likely to merge with the “frontal boundary zone” low pressure system just to its north and form one powerful storm. A west-to-east moving cold front will arrive late Saturday and finally help to push the Atlantic low pressure system farther out to sea. It will also maintain an overall relatively cool weather pattern through the early and middle parts of next week.
Meteorologist Paul Dorian
Perspecta, Inc.
perspectaweather.com