Flash Flood Watch issued July 28 at 3:36AM EDT until July 29 at 2:00PM EDT by NWS

...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 2 PM EDT THIS AFTERNOON THROUGH SATURDAY AFTERNOON... The Flash Flood Watch continues for * Portions of southeastern Pennsylvania, southern New Jersey, eastern Maryland and Delaware. * From 2 PM EDT this afternoon through Saturday afternoon.

from Current Watches, Warnings and Advisories for the United States Issued by the National Weather Service http://ift.tt/2v4Yjsn