Alert archive / Pennsylvania / Flash Flood Warnings / 2009

Flash Flood Warnings in Pennsylvania, August 2009

37 flash flood warnings in August 2009. 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 2009. Tap one for its archive.

Flash Flood Warnings
37
Busiest day
August 2, 20096 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 1, 4:01 PM EDTFlash Flood WarningCTPLancaster, York3 hr
Aug 2, 9:06 AM EDTFlash Flood WarningPHIBerks, Carbon, Chester, Lehigh, Monroe, Northampton4 hr
Aug 2, 9:36 AM EDTFlash Flood WarningCTPLancaster, Lebanon, York3 hr
Aug 2, 10:08 AM EDTFlash Flood WarningPHIBucks, Chester, Delaware, Montgomery, Philadelphia9 hr
Aug 2, 11:07 AM EDTFlash Flood WarningBGMWayne4 hr
Aug 2, 4:22 PM EDTFlash Flood WarningPHIBerks2 hr
Aug 2, 7:49 PM EDTFlash Flood WarningCTPCumberland107 min
Aug 9, 4:11 PM EDTFlash Flood WarningCTPMcKean, Potter3 hr
Aug 10, 7:50 AM EDTFlash Flood WarningCTPMcKean, Warren4 hr
Aug 10, 11:43 AM EDTFlash Flood WarningCTPWarren3 hr
Aug 10, 2:32 PM EDTFlash Flood WarningCLEErie3 hr
Aug 10, 3:12 PM EDTFlash Flood WarningCTPWarren3 hr
Aug 10, 4:32 PM EDTFlash Flood WarningCLECrawford2 hr
Aug 11, 3:08 PM EDTFlash Flood WarningCTPMcKean, Warren3 hr
Aug 11, 5:01 PM EDTFlash Flood WarningCTPAdams3 hr
Aug 12, 2:22 PM EDTFlash Flood WarningCTPPotter3 hr
Aug 12, 5:18 PM EDTFlash Flood WarningPHIBucks, Chester, Montgomery2 hr
Aug 12, 8:54 PM EDTFlash Flood WarningPHICarbon4 hr
Aug 12, 9:29 PM EDTFlash Flood WarningCTPLebanon, Schuylkill4 hr
Aug 12, 10:33 PM EDTFlash Flood WarningPHICarbon, Lehigh, Northampton4 hr
Aug 12, 10:42 PM EDTFlash Flood WarningPHIBerks4 hr
Aug 12, 11:23 PM EDTFlash Flood WarningPHIBerks, Lehigh, Northampton7 hr
Aug 12, 11:50 PM EDTFlash Flood WarningCTPLancaster, York3 hr
Aug 16, 7:09 PM EDTFlash Flood WarningCTPSomerset3 hr
Aug 19, 1:35 PM EDTFlash Flood WarningBGMLackawanna, Luzerne63 min
Aug 19, 5:04 PM EDTFlash Flood WarningPHIMonroe115 min
Aug 19, 7:13 PM EDTFlash Flood WarningCTPCumberland3 hr
Aug 20, 7:31 PM EDTFlash Flood WarningCLECrawford, Erie93 min
Aug 21, 12:00 PM EDTFlash Flood WarningCTPElk, McKean3 hr
Aug 21, 2:17 PM EDTFlash Flood WarningCTPLancaster, York2 hr
Aug 21, 10:49 PM EDTFlash Flood WarningPHIChester55 min
Aug 22, 1:51 AM EDTFlash Flood WarningPHIMontgomery, Philadelphia77 min
Aug 22, 6:03 AM EDTFlash Flood WarningPHIMontgomery, Philadelphia3 hr
Aug 22, 6:21 PM EDTFlash Flood WarningPHIBucks, Northampton3 hr
Aug 22, 7:00 PM EDTFlash Flood WarningPHIBucks, Chester, Delaware, Montgomery, Philadelphia4 hr
Aug 28, 9:16 AM EDTFlash Flood WarningPHIBucks, Lehigh, Northampton4 hr
Aug 28, 11:23 PM EDTFlash Flood WarningCTPYork3 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 archive20082010

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.