Our nation’s capital is in for a soaker. For the rest of the week, a large area of upper level low pressure will break off from the jet stream flow and remain stagnant over the eastern US. A continuous flow of moisture from the Atlantic will team up with an area of low pressure at the surface to keep storm chances around into the weekend.
Because the pattern change much, neither will the location seeing the storms. Day after day of rainfall will push totals from southern Pennsylvania to DC as high as 6-9″. Flash flood watches have been issued for the greater DC/Baltimore area through Friday. Roads, bridges, and low lying areas could be susceptible to rapid water rises. A Flood Watch covers southern Pennsylvania. Rivers, lakes, and streams in these counties could reach flood stage by the weekend.
A cooler pocket of air will keep conditions more fall-like in the coming days. Even when it’s not raining, overcast skies will keep things rather gloomy. Highs will be near or just below average through Friday.
For WeatherNation, Meteorologist Karissa Klos.