Flash Flood Warning Issued for Parts of New Jersey and Pennsylvania
The National Weather Service in Mount Holly has issued a Flash Flood Warning for portions of New Jersey and Pennsylvania, effective until 12:00 PM EDT on September 13. Heavy rain has already triggered active flash flooding, leading to road closures and water rescues.
The National Weather Service issued the warning at 8:31 AM EDT on September 13 following reports of heavy rain from emergency management. The warned area encompasses Mercer and Middlesex counties in New Jersey, alongside Bucks, Delaware, Montgomery, and Philadelphia counties in Pennsylvania. Specific locations expected to experience flash flooding include Philadelphia, Trenton, Bensalem, Ewing, Chester, Princeton, Yeadon, Folcroft, Swarthmore, Hightstown, and Jenkintown.
Emergency management has reported that flash flooding is already underway in parts of Delaware County, where related water rescues and road closures have occurred. Small creeks in the region are running high, and Frankford Creek in Philadelphia County is rising rapidly.
Between 0.5 and 2 inches of rain have already fallen, with an expected rainfall rate of 0.75 to 1.75 inches in one hour. This intense rainfall poses a life-threatening hazard, with potential flooding across creeks, streams, urban areas, highways, streets, and underpasses.