Pennsylvania Severe Flash Flood Warning | Effective 07/27/2026 12:58

Headline: 
Flash Flood Warning issued July 27 at 3:58PM EDT until July 27 at 8:00PM EDT by NWS Mount Holly NJ
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
July 27, 2026 - 12:58pm
Expires: 
July 27, 2026 - 5:00pm
Description: 
FFWPHI The National Weather Service in Mount Holly has issued a * Flash Flood Warning for... Northeastern Delaware County in southeastern Pennsylvania... Southeastern Montgomery County in southeastern Pennsylvania... Philadelphia County in southeastern Pennsylvania... * Until 800 PM EDT. * At 358 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 2 inches of rain have fallen. The expected rainfall rate is 1 to 2 inches in 1 hour. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar. IMPACT...Flooding of small creeks and streams, urban areas, highways, streets, and underpasses as well as other drainage and low lying areas. * Some locations that may experience flash flooding include... Philadelphia, Camden, Yeadon, Conshohocken, Hatboro, Ambler, Jenkintown, Narberth, East Lansdowne, Rockledge, Abington and Bryn Athyn. This includes the following highways... Interstate 476 in Pennsylvania between mile markers 14 and 19. Interstate 76 in Pennsylvania between mile markers 330 and 351. Interstate 95 in Pennsylvania between mile markers 16 and 33. Interstate 676 in Pennsylvania between mile markers 0 and 1. Pennsylvania Turnpike between mile markers 333 and 346.
Instruction: 
Turn around...don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads.
Area Description: 
Delaware, PA; Montgomery, PA; Philadelphia, PA
Forcast Office: 
NWS Mount Holly NJ