Pennsylvania Severe Flash Flood Warning | Effective 09/03/2026 20:14

Headline: 
Flash Flood Warning issued September 3 at 11:14PM EDT until September 4 at 12:45AM EDT by NWS Pittsburgh PA
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
September 3, 2026 - 8:14pm
Expires: 
September 3, 2026 - 9:45pm
Description: 
At 1114 PM EDT, local law enforcement reported thunderstorms producing heavy rain across the warned area. Between 1.5 and 3.5 inches of rain have fallen. Flooding impacts will continue, but no additional rainfall is expected. Flooded roadways and high water is still present. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Law enforcement reported. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. Some locations that will experience flash flooding include... Monroeville, Greensburg, Jeannette, Vandergrift, Apollo, Murrysville, White Oak, Irwin, Manor, Trafford, Youngwood, Delmont, West Newton, New Stanton, Leechburg, North Apollo, West Leechburg and Avonmore.
Instruction: 
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding.
Area Description: 
Allegheny, PA; Armstrong, PA; Indiana, PA; Westmoreland, PA
Forcast Office: 
NWS Pittsburgh PA
Sender: 
w-nws.webmaster@noaa.gov