Areal Flood Warnings in Pennsylvania
1,255 areal flood warnings since 1986. 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 areal flood warnings reaches back to 2005.
Areal Flood Warnings by county
Each county as a circle sized by its count since 1986. Tap one for its archive.
- Areal Flood Warnings
- 1,255
- Busiest year
- 2011153 areal flood warnings
- Average year
- 63over 20 years on file
Over time
By year
Before late 2005 the archive holds only tornado, severe thunderstorm, flash flood and marine warnings, and from 1997 SPC's watches, so the jump that year is the archive widening, not the weather.
By month of the year
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Montgomery County210
- Chester County160
- Bucks County154
- Philadelphia County149
- Westmoreland County119
- Delaware County114
- Lehigh County93
- Allegheny County90
- Berks County89
- Northampton County82
- Washington County82
- Beaver County76
- Fayette County75
- Butler County65
- Lancaster County63
- Armstrong County61
- Indiana County60
- York County58
- Greene County57
- Lawrence County54
- Lebanon County50
- Monroe County49
- Lycoming County49
- Dauphin County49
- Centre County45
- Jefferson County42
- Erie County41
- Carbon County41
- Crawford County40
- Northumberland County40
- Venango County39
- Huntingdon County38
- Sullivan County38
- Cumberland County37
- Perry County37
- Schuylkill County36
- Adams County34
- Franklin County34
- Somerset County34
- Clarion County33
27 more counties
- Clinton County33
- Columbia County33
- Juniata County33
- Clearfield County31
- Bedford County30
- Montour County30
- Union County30
- Cambria County29
- Tioga County29
- Blair County28
- Snyder County28
- Mercer County26
- Fulton County25
- Mifflin County24
- Forest County19
- Bradford County19
- Potter County19
- McKean County18
- Wayne County18
- Elk County15
- Susquehanna County15
- Warren County11
- Cameron County11
- Wyoming County11
- Lackawanna County10
- Luzerne County9
- Pike County2
The latest areal flood warnings
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 20, 3:22 PM EDT | Areal Flood Warning | PBZ | Washington | 5 hr |
| Sep 20, 1:17 PM EDT | Areal Flood Warning | PBZ | Allegheny, Washington | 5 hr |
| Sep 12, 8:27 PM EDT | Areal Flood Warning | PBZ | Fayette, Greene, Washington, Westmoreland | 3 hr |
| Sep 12, 7:48 PM EDT | Areal Flood Warning | PBZ | Armstrong, Indiana, Jefferson | 3 hr |
| Sep 12, 7:00 PM EDT | Areal Flood Warning | PBZ | Allegheny, Washington, Westmoreland | 3 hr |
| Sep 12, 6:26 PM EDT | Areal Flood Warning | PBZ | Allegheny, Washington | 3 hr |
| Sep 3, 5:56 AM EDT | Areal Flood Warning | CTP | McKean, Warren | 3 hr |
| Sep 3, 5:46 AM EDT | Areal Flood Warning | CTP | Centre, Clearfield, Huntingdon, Juniata, Mifflin, Perry | 2 hr |
| Sep 3, 5:26 AM EDT | Areal Flood Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 4 hr |
| Sep 3, 5:03 AM EDT | Areal Flood Warning | CTP | Clinton, Lycoming | 117 min |
| Sep 3, 3:53 AM EDT | Areal Flood Warning | CTP | Dauphin, Lebanon, Schuylkill | 3 hr |
| Sep 3, 3:28 AM EDT | Areal Flood Warning | CLE | Erie | 8 hr |
Nearby
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.