Philadelphia, PA – Heavy rain and strong thunderstorms are drenching much of the Mid-Atlantic Sunday night, sending water rushing into streets and low-lying neighborhoods from Harrisburg to the Jersey Shore. The threat of flash flooding will continue across Pennsylvania, Maryland, New Jersey, and Virginia through at least 5 a.m. Monday, with some areas at risk of 1 to 3 inches of rapid rainfall.
According to the National Weather Service, severe thunderstorms are expected to redevelop tonight, especially along I-95 and the Susquehanna River corridor. Cities including Philadelphia, Baltimore, Washington, D.C., and Richmond are under a flash flood risk, with the heaviest rainfall likely from late evening through early morning hours. Local DOTs are warning drivers to avoid flooded roads and watch for sudden closures, especially in flood-prone spots.
Major roads like I-76, I-83, and sections of the Pennsylvania Turnpike could see ponding, making for hazardous travel. Residents are urged to charge mobile devices, secure basement valuables, and have a way to receive overnight emergency alerts. Power outages are possible as storms bring gusty winds alongside downpours.
This round of storms comes as much of the region remains waterlogged from earlier rain, increasing the risk of flash flooding, particularly in southeast Pennsylvania and northern Maryland. If you encounter water on the road, turn around—do not drive through flooded areas.
Flash flood watches remain in effect for the Mid-Atlantic through early Monday. Additional advisories may be issued overnight as the situation evolves.
