7:00 AM | ***Significant coastal storm on Saturday begins a very wet pattern for the eastern US***
Paul Dorian
6-Day Philadelphia Forecast
Today
Mainly sunny, still comfortably warm, highs in the low-to-mid 80’s
Tonight
Partly cloudy, mild, lows in the mid 60’s
Saturday
Mainly cloudy, not as warm, more humid, becoming breezy, showers and thunderstorms likely to develop during the afternoon hours, some of the rain can be heavy, upper 70's for afternoon highs
Saturday Night
Mainly cloudy, windy, mild, muggy, showers and thunderstorms likely, some of the rain can be heavy, near 65 degrees for overnight lows
Sunday
Mainly cloudy, warm, humid, chance of showers and thunderstorms, near 80 degrees
Monday
Mainly cloudy, warm, humid, chance of showers and thunderstorms, low-to-mid 80’s
Tuesday
Mainly cloudy, warm, humid, chance of showers and thunderstorms, mid 80’s
Wednesday
Mainly cloudy, warm, humid, chance of showers and thunderstorms, low-to-mid 80’s
Discussion
A much wetter overall weather pattern for the eastern US will begin this weekend and continue right through next week and it will get underway with the formation of a strong coastal storm. An unusually deep upper-level trough will form over the Upper Midwest early this weekend and this will become a slow-moving system and a major player in the upcoming week. In addition, a strong surface coastal low pressure system will form on Saturday potentially causing significant rainfall and gusty winds from the immediate I-95 corridor to the coastline from Virginia-to-southern New England with scattered power outages on the table. Even after this coastal storm exits the region on Sunday, the threat for showers and thunderstorms will continue not only on Sunday, but right through next week as deep tropical moisture will persistently flow northward from the tropical Atlantic to the Mid-Atlantic. Flooding may very well become a serious issue during this very wet stretch with several inches of rain quite likely in the coming days.
Meteorologist Paul Dorian
Perspecta, Inc.
perspectaweather.com