7:00 AM | ****Heavy rain and flooding event likely from early Wednesday into early Thursday associated with remnants of Ida****
Paul Dorian
6-Day forecast for the Washington, D.C. metro region
Today
Mainly cloudy, warm, humid, chance of PM showers and thunderstorms, highs in the low-to-mid 80’s; W winds at 5-10 mph
Tonight
Mainly cloudy, mild, muggy, chance of showers and thunderstorms; especially, in the late night hours, some of the late night rain can be heavy and some of the storms can be strong-to-severe, watch for localized flooding, lows not far from 70 degrees
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 thunderstorms can be strong-to-severe, the potential exists for significant total precipitation amounts, watch for localized flash flooding, mid-to-upper 70’s for afternoon highs
Wednesday Night
Occasional 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, windy, mild, mid 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, mid 70’s
Friday
Mainly sunny, pleasant, mid-to-upper 70’s
Saturday
Mainly sunny, comfortable, upper 70’s
Sunday
Mainly sunny, warm, low-to-mid 80’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 DC metro region from 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 to the south and east of the District. 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 DC metro region.
Meteorologist Paul Dorian
Peraton
peratonweather.com