River Flood Warnings in Pennsylvania
1,311 river 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 river flood warnings reaches back to 2005.
River Flood Warnings by county
Each county as a circle sized by its count since 1986. Tap one for its archive.
- River Flood Warnings
- 1,311
- Busiest year
- 2011289 river flood warnings
- Average year
- 66over 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.
- Chester County170
- Montgomery County103
- Delaware County98
- Dauphin County88
- Bucks County85
- Allegheny County83
- Lebanon County82
- Huntingdon County79
- Bradford County75
- Cumberland County67
- York County66
- Westmoreland County65
- Union County64
- Fayette County63
- Northumberland County55
- Philadelphia County53
- Schuylkill County50
- Washington County43
- Lycoming County39
- Northampton County36
- Susquehanna County35
- Lancaster County35
- Perry County35
- Blair County34
- Wyoming County31
- Snyder County29
- Monroe County29
- Clinton County27
- Clarion County26
- Centre County23
- Lehigh County23
- Columbia County22
- Greene County21
- Juniata County19
- Berks County18
- Luzerne County17
- Armstrong County15
- Elk County13
- Wayne County13
- Forest County12
The latest river flood warnings
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 3, 8:09 AM EDT | River Flood Warning | PHI | Chester | 3 hr |
| Sep 3, 1:26 AM EDT | River Flood Warning | CTP | Snyder, Union | 15 hr |
| Sep 2, 11:40 PM EDT | River Flood Warning | CTP | Centre, Clinton | 16 hr |
| Aug 28, 2:41 AM EDT | River Flood Warning | CTP | Lancaster | 14 hr |
| Aug 27, 9:32 PM EDT | River Flood Warning | PHI | Bucks | 6 hr |
| Aug 20, 5:54 PM EDT | River Flood Warning | CTP | Blair, Huntingdon | 3 hr |
| Aug 11, 9:37 AM EDT | River Flood Warning | PBZ | Fayette | 3 hr |
| Aug 11, 8:27 AM EDT | River Flood Warning | CTP | Somerset | 3 hr |
| Aug 2, 8:25 PM EDT | River Flood Warning | CTP | Snyder, Union | 3 hr |
| Jul 29, 2:19 PM EDT | River Flood Warning | BGM | Wayne | 3 hr |
| Jun 15, 2:12 AM EDT | River Flood Warning | PHI | Delaware | 2 hr |
| Feb 23, 5:52 AM EST | River Flood Warning | CTP | Dauphin | 24 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. Rebuilt daily.