Alert archive / Pennsylvania / Flash Flood Warnings / 2020

Flash Flood Warnings in Pennsylvania, August 2020

29 flash flood warnings in August 2020. 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 August 2020. Tap one for its archive.

Flash Flood Warnings
29
Busiest day
August 4, 202010 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
Aug 2, 4:42 AM EDTFlash Flood WarningPHIBerks4 hr
Aug 4, 7:28 AM EDTFlash Flood WarningPHIChester, Delaware, Montgomery3 hr
Aug 4, 8:11 AM EDTFlash Flood WarningPHIBucks, Lehigh, Montgomery, Northampton4 hr
Aug 4, 9:38 AM EDTFlash Flood WarningPHIMonroe, Northampton4 hr
Aug 4, 10:02 AM EDTFlash Flood WarningPHIChester, Delaware4 hr
Aug 4, 10:20 AM EDTFlash Flood WarningPHIBucks, Chester, Delaware, Montgomery, Philadelphia4 hr
Aug 4, 10:30 AM EDTFlash Flood WarningCTPLancaster, York4 hr
Aug 4, 11:01 AM EDTFlash Flood WarningPHIBucks4 hr
Aug 4, 11:43 AM EDTFlash Flood WarningPHIBerks, Lehigh, Northampton4 hr
Aug 4, 1:22 PM EDTFlash Flood WarningBGMLackawanna, Pike, Wayne4 hr
Aug 4, 2:16 PM EDTFlash Flood WarningBGMPike4 hr
Aug 7, 5:08 AM EDTFlash Flood WarningBGMBradford, Susquehanna3 hr
Aug 7, 3:31 PM EDTFlash Flood WarningCTPLancaster, York3 hr
Aug 7, 4:10 PM EDTFlash Flood WarningPHIBerks2 hr
Aug 7, 4:32 PM EDTFlash Flood WarningPHIChester3 hr
Aug 7, 4:40 PM EDTFlash Flood Warning Considerable damage threatCTPLancaster, York118 min
Aug 7, 5:03 PM EDTFlash Flood WarningPHIChester, Delaware5 hr
Aug 7, 5:43 PM EDTFlash Flood WarningPHIMontgomery, Philadelphia4 hr
Aug 12, 1:47 PM EDTFlash Flood WarningPHIChester, Delaware2 hr
Aug 12, 2:40 PM EDTFlash Flood WarningPHIChester, Delaware, Montgomery, Philadelphia3 hr
Aug 12, 3:36 PM EDTFlash Flood WarningPHIChester108 min
Aug 12, 4:15 PM EDTFlash Flood WarningCTPLancaster, York2 hr
Aug 13, 8:37 AM EDTFlash Flood WarningPHIBucks3 hr
Aug 13, 9:07 AM EDTFlash Flood WarningPHIBucks, Montgomery3 hr
Aug 22, 8:25 PM EDTFlash Flood WarningPBZAllegheny68 min
Aug 24, 3:36 PM EDTFlash Flood WarningBGMLuzerne2 hr
Aug 28, 12:38 PM EDTFlash Flood WarningPBZAllegheny, Westmoreland6 hr
Aug 28, 1:14 PM EDTFlash Flood WarningPBZAllegheny, Indiana, Westmoreland6 hr
Aug 28, 2:10 PM EDTFlash Flood WarningPBZWestmoreland3 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 archive20192021

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.