NowUnlike yesterday afternoon, when most of the storm activity was south of the District, today's heaviest thunderstorms are focused on the Baltimore area. These storms, ahead of a weak cold front sagging southward from the Mason-Dixon line, prompted a Flash Flood Warning until 6pm for portions of Baltimore County. Since the general motion is more east than south, they are unlikely to reach any but the most northeastern fringes of the Washington suburbs.
Conditions are still favorable for some other scattered storms to develop in the metro area through this evening, however.
Tonight and TomorrowContinued muggy. Tonight will be warm and humid with a 40% chance of showers or thunderstorms through this evening and lows in the low to mid 70s. Tomorrow will be sunnier than today with highs in the upper 80s and a chance of showers and thunderstorms, mainly south of the immediate metro area.
For the outlook through the weekend and Larson's Long-Range, see Josh's post below.
Northeast StormsNew York State was heavily pounded with storms yesterday. The 3.33" of rain in Rochester was the greatest daily amount ever recorded there in July and the third highest amount in 100 years. A tornado was reported in Westchester County, just north of New York City.