Weather alerts in Pennsylvania
65,218 weather alerts since 1986, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count since 1986. Tap one for its archive.
- Alerts
- 65,218
- Warnings
- 29,649
- Watches
- 3,491
- Advisories
- 10,188
- Busiest year
- 20114,168 alerts
- Average year
- 1,591over 41 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 product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Bucks County4,802
- Montgomery County4,681
- Chester County4,627
- Lancaster County4,582
- Delaware County4,521
- York County4,488
- Philadelphia County4,485
- Berks County4,469
- Allegheny County4,428
- Westmoreland County4,302
- Northampton County4,014
- Lehigh County4,007
- Dauphin County3,853
- Monroe County3,824
- Lycoming County3,760
- Centre County3,725
- Washington County3,709
- Lebanon County3,708
- Cumberland County3,663
- Butler County3,655
- Clearfield County3,548
- Adams County3,534
- Schuylkill County3,508
- Carbon County3,469
- Fayette County3,452
- Wayne County3,444
- Franklin County3,422
- Somerset County3,415
- Susquehanna County3,413
- Cambria County3,410
- Huntingdon County3,410
- Beaver County3,407
- Clinton County3,407
- Armstrong County3,367
- Bradford County3,296
- Erie County3,284
- Perry County3,274
- Northumberland County3,269
- Bedford County3,203
- Crawford County3,164
27 more counties
- Luzerne County3,159
- Columbia County3,144
- Blair County3,137
- Union County3,085
- Lackawanna County3,068
- Clarion County3,048
- Mercer County3,037
- Venango County3,034
- Snyder County3,022
- McKean County3,000
- Lawrence County2,988
- Juniata County2,981
- Jefferson County2,960
- Mifflin County2,957
- Sullivan County2,956
- Tioga County2,938
- Elk County2,928
- Warren County2,909
- Montour County2,892
- Potter County2,865
- Pike County2,849
- Fulton County2,816
- Wyoming County2,771
- Greene County2,738
- Cameron County2,719
- Indiana County2,611
- Forest County2,556
The latest 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 20, 10:37 AM EDT | Flash Flood Warning | PBZ | Washington | 3 hr |
| Sep 20, 2:48 AM EDT | Flash Flood Warning | PBZ | Washington | 2 hr |
| Sep 17, 9:16 PM EDT | Flash Flood Warning | CTP | Somerset | 3 hr |
| Sep 13, 7:14 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 46 min |
| Sep 13, 6:18 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Beaver, Butler | 42 min |
| Sep 13, 5:30 PM EDT | Severe Thunderstorm Warning | PBZ | Butler, Lawrence, Mercer | 34 min |
| Sep 13, 5:26 PM EDT | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Sep 13, 5:17 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer, Venango | 30 min |
| Sep 13, 4:42 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 33 min |
| Sep 13, 4:13 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 47 min |
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.