Flood Watches in Pennsylvania
506 flood watches 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 flood watches reaches back to 2005.
Flood Watches by county
Each county as a circle sized by its count since 1986. Tap one for its archive.
- Flood Watches
- 506
- Busiest year
- 202656 flood watches
- Average year
- 24over 21 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.
- Philadelphia County117
- Delaware County114
- Northampton County95
- Lehigh County93
- Berks County89
- Lancaster County86
- York County85
- Adams County79
- Lebanon County78
- Bucks County77
- Montgomery County77
- Wayne County75
- Carbon County74
- Dauphin County74
- Greene County74
- Chester County74
- Cumberland County73
- Monroe County73
- Susquehanna County72
- Luzerne County70
- Lackawanna County69
- Perry County69
- Pike County69
- Franklin County68
- Washington County68
- Somerset County67
- Wyoming County67
- Allegheny County67
- Schuylkill County66
- Fayette County66
- Bradford County65
- Beaver County62
- Lycoming County62
- Bedford County62
- Fulton County62
- Juniata County62
- Sullivan County61
- Huntingdon County61
- Westmoreland County61
- Blair County59
27 more counties
- Columbia County59
- Snyder County59
- Union County59
- Cambria County57
- Northumberland County57
- Montour County56
- Butler County55
- Mifflin County55
- Armstrong County53
- Clinton County53
- Centre County53
- Crawford County52
- Tioga County52
- Jefferson County51
- Lawrence County51
- Erie County51
- Clearfield County49
- Cameron County48
- Clarion County48
- Elk County48
- Venango County47
- Forest County46
- Mercer County45
- Potter County44
- McKean County42
- Warren County40
- Indiana County20
The latest flood watches
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 20, 12:00 PM EDT | Flood Watch | PBZ | Allegheny, Beaver, Fayette, Greene, Washington, Westmoreland | 56 hr |
| Sep 12, 10:23 AM EDT | Flood Watch | CTP | Cambria, Cameron, Clearfield, Elk, McKean, Somerset and 1 more | 18 hr |
| Sep 12, 2:21 AM EDT | Flood Watch | PHI | Bucks, Delaware, Montgomery, Philadelphia | 34 hr |
| Sep 11, 1:26 PM EDT | Flood Watch | PBZ | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 9 more | 40 hr |
| Sep 4, 12:05 PM EDT | Flood Watch | CTP | Bedford, Blair, Cambria, Somerset | 4 hr |
| Sep 4, 9:35 AM EDT | Flood Watch | PBZ | Allegheny, Beaver, Fayette, Greene, Washington, Westmoreland | 7 hr |
| Sep 3, 12:01 PM EDT | Flood Watch | CLE | Crawford, Erie | 10 hr |
| Sep 3, 11:15 AM EDT | Flood Watch | PBZ | Clarion, Forest, Jefferson, Mercer, Venango | 11 hr |
| Sep 3, 2:42 AM EDT | Flood Watch | CTP | Adams, Bedford, Blair, Cambria, Cameron, Centre and 27 more | 20 hr |
| Sep 2, 12:46 PM EDT | Flood Watch | BGM | Bradford, Susquehanna, Wayne | 14 hr |
| Aug 27, 2:55 AM EDT | Flood Watch | CTP | Lancaster, Lebanon, Schuylkill | 22 hr |
| Aug 26, 2:31 PM EDT | Flood Watch | PHI | Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 2 more | 35 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.