Alert archive / Pennsylvania / Flash Flood Warnings / 2025

Flash Flood Warnings in Pennsylvania, May 2025

36 flash flood warnings in May 2025. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of flash flood warnings reaches back to 1986.

Flash Flood Warnings by county

Each county as a circle sized by its count in May 2025. Tap one for its archive.

Flash Flood Warnings
36
Busiest day
May 6, 20256 flash flood warnings

Over time

By day

Days in UTC, the clock the archive keeps.

The alerts

Every alert, in the order issued. Times are local, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeCountiesLasted
May 3, 7:32 PM EDTFlash Flood WarningPHIChester, Delaware3 hr
May 4, 7:25 PM EDTFlash Flood WarningBGMLackawanna, Susquehanna, Wayne3 hr
May 4, 8:32 PM EDTFlash Flood WarningPBZArmstrong3 hr
May 4, 8:46 PM EDTFlash Flood WarningPBZAllegheny, Armstrong, Butler, Westmoreland3 hr
May 4, 10:05 PM EDTFlash Flood WarningPBZArmstrong, Butler, Lawrence, Mercer, Venango4 hr
May 5, 7:25 PM EDTFlash Flood WarningBGMBradford2 hr
May 5, 8:06 PM EDTFlash Flood WarningCTPTioga3 hr
May 5, 9:38 PM EDTFlash Flood WarningCTPAdams, Cumberland, Franklin3 hr
May 6, 3:07 PM EDTFlash Flood WarningBGMBradford, Wyoming3 hr
May 6, 3:27 PM EDTFlash Flood WarningCTPDauphin77 min
May 6, 4:23 PM EDTFlash Flood WarningBGMLackawanna, Susquehanna, Wayne3 hr
May 6, 4:29 PM EDTFlash Flood WarningCTPTioga3 hr
May 8, 2:56 PM EDTFlash Flood WarningBGMPike2 hr
May 8, 4:31 PM EDTFlash Flood WarningCTPCentre, Clinton, Union2 hr
May 8, 4:40 PM EDTFlash Flood WarningCTPCentre2 hr
May 13, 3:20 PM EDTFlash Flood Warning Considerable damage threatCTPBedford, Somerset3 hr
May 14, 12:09 PM EDTFlash Flood WarningPHIBucks, Montgomery, Philadelphia4 hr
May 14, 5:30 PM EDTFlash Flood WarningPBZAllegheny68 min
May 15, 6:39 AM EDTFlash Flood WarningCTPAdams, Cumberland, York2 hr
May 15, 4:56 PM EDTFlash Flood WarningPHIBucks44 min
May 16, 9:08 AM EDTFlash Flood WarningCTPLycoming2 hr
May 16, 11:32 AM EDTFlash Flood WarningPHIBucks, Delaware, Montgomery, Philadelphia4 hr
May 16, 11:41 AM EDTFlash Flood WarningPHIChester, Delaware4 hr
May 16, 12:21 PM EDTFlash Flood WarningPHIBucks, Montgomery4 hr
May 16, 6:09 PM EDTFlash Flood WarningCTPCumberland, Dauphin2 hr
May 21, 3:42 PM EDTFlash Flood WarningPBZBeaver, Lawrence3 hr
May 21, 4:30 PM EDTFlash Flood WarningPBZButler, Lawrence3 hr
May 21, 5:28 PM EDTFlash Flood WarningPBZAllegheny2 hr
May 21, 8:12 PM EDTFlash Flood WarningPBZButler, Lawrence3 hr
May 30, 6:02 PM EDTFlash Flood WarningPBZFayette, Greene, Washington5 hr
May 30, 7:09 PM EDTFlash Flood WarningPBZGreene, Washington3 hr
May 30, 11:12 PM EDTFlash Flood WarningPHIChester, Delaware3 hr
May 30, 11:36 PM EDTFlash Flood WarningPHIBucks, Chester, Delaware, Montgomery, Philadelphia4 hr
May 31, 12:34 AM EDTFlash Flood WarningPHIBucks3 hr
May 31, 1:04 AM EDTFlash Flood WarningPHIBerks, Bucks, Lehigh, Montgomery4 hr
May 31, 5:43 AM EDTFlash Flood WarningBGMPike, Wayne3 hr

By county

Every county with at least one alert. A county page lists each alert that covered it.

Nearby

Alerts in force nowTornadoes on recordThe radar archive20242026

Sources

National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.