National Weather Service United States Department of Commerce

Briefing for Heat, Severe Storm, and Flash Flood Risks through Thursday

Dangerously hot and humid conditions are expected through Wednesday. There is also a threat of isolated severe thunderstorms on Wednesday. Flash flooding from locally heavy rainfall is possible on Thursday. See this briefing for details on these hazards. Read More >

County Warning Area
 

Our forecast area, or County Warning Area (CWA), is highlighted in the picture below.

Our CWA consists of ten counties in eastern Pennsylvania, sixteen counties in New Jersey,

five counties on the upper Eastern Shore of Maryland, and all three counties in Delaware.

This area includes the cities of Philadelphia, Allentown, Atlantic City, and Wilmington, and

is home to approximately 11.1 million people.