7:00 AM | ****Heavy rain and flooding event likely from Wednesday into early Thursday associated with the remnants of Ida****
Paul Dorian
6-Day forecast for the Philadelphia, Pennsylvania metro region
Today
Mainly cloudy, not as warm, humid, chance of PM showers and thunderstorms, highs in the lower 80’s; NW winds at 5-10 mph
Tonight
Mainly cloudy, mild, muggy, chance of showers late at night, maybe a thunderstorm, lows in the upper 60’s
Wednesday
Mainly cloudy, noticeably cooler, humid, becoming breezy, periods of rain with the possibility of thunderstorms, some of the rain can be heavy at times and some of the storms can be strong-to-severe, the potential exists for significant total precipitation amounts, watch for localized flash flooding, low-to-mid 70’s for afternoon highs
Wednesday Night
Periods of rain with possible thunderstorms, some of the rain will be heavy at times and some of the storms can be strong-to-severe, the potential exists for significant total precipitation amounts, watch for localized flash flooding, mild, windy, lower 60’s for late night lows
Thursday
Mainly cloudy in the early morning with the chance of lingering showers and thunderstorms, partly sunny in the afternoon, windy and still on the cool side for early September, low-to-mid 70’s
Friday
Mainly sunny, pleasant, low-to-mid 70’s
Saturday
Mainly sunny, comfortable, mid 70’s
Sunday
Mainly sunny, nice, upper 70’s
Discussion
A heavy rain and flooding event is likely for the region from Wednesday into early Thursday. The remnants of Ida will push into the Mid-Atlantic region on Wednesday and its associated rainfall shield will actually tend to become “re-invigorated” and broaden out as it encounters a stalled-out frontal boundary zone and an upper-level jet streak. A general 2-4 inch rainfall is likely in the Philly metro region from later tomorrow into early Thursday and isolated higher amounts of up to 6 inches are even possible; especially, on the northwest side of Route I-95. Thunderstorms can mix into the picture and - as is somewhat customary with tropical systems in the middle latitudes - isolated tornadoes will be a threat to the east of the storm track. The greatest threat for severe weather during this storm will take place across New Jersey and Delaware. Cool air for the beginning of September will follow the departure of the tropical storm with highs in the late week and early this weekend confined to the 70’s in much of the Philly metro region.
Meteorologist Paul Dorian
Peraton
peratonweather.com