Alert archive / Pennsylvania / Severe Thunderstorm Warnings / 2019
Severe Thunderstorm Warnings in Pennsylvania, September 2019
34 severe thunderstorm warnings in September 2019. 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 severe thunderstorm warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count in September 2019. Tap one for its archive.
- Severe Thunderstorm Warnings
- 34
- Busiest day
- September 11, 201914 severe thunderstorm 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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 5:17 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 43 min |
| Sep 1, 7:59 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 17 min |
| Sep 1, 8:08 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 52 min |
| Sep 1, 8:26 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer, Venango | 49 min |
| Sep 1, 11:37 PM EDT | Severe Thunderstorm Warning | PBZ | Greene, Washington | 38 min |
| Sep 2, 6:31 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 29 min |
| Sep 4, 3:29 AM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 47 min |
| Sep 4, 12:37 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 53 min |
| Sep 4, 6:02 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 43 min |
| Sep 11, 3:28 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Lawrence | 47 min |
| Sep 11, 4:00 PM EDT | Severe Thunderstorm Warning | PBZ | Butler, Lawrence, Mercer | 45 min |
| Sep 11, 4:34 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Butler, Lawrence | 41 min |
| Sep 11, 4:48 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Northumberland, Schuylkill | 57 min |
| Sep 11, 4:59 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Beaver, Butler | 46 min |
| Sep 11, 5:10 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Butler, Clarion, Venango | 50 min |
| Sep 11, 5:14 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 31 min |
| Sep 11, 5:35 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion, Jefferson, Venango | 26 min |
| Sep 11, 6:15 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Montgomery | 45 min |
| Sep 11, 6:56 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 19 min |
| Sep 11, 6:59 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 61 min |
| Sep 11, 7:09 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 17 min |
| Sep 11, 7:30 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Blair, Huntingdon | 75 min |
| Sep 11, 7:59 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 31 min |
| Sep 11, 9:02 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 18 min |
| Sep 11, 10:10 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh, Montgomery | 28 min |
| Sep 13, 8:52 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 38 min |
| Sep 13, 9:41 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 33 min |
| Sep 13, 11:38 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer, Venango | 37 min |
| Sep 28, 6:16 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Beaver, Washington | 44 min |
| Sep 28, 6:32 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Greene, Washington | 43 min |
| Sep 28, 6:52 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Indiana, Westmoreland | 38 min |
| Sep 28, 7:13 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Lebanon | 77 min |
| Sep 28, 7:15 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Fayette, Washington, Westmoreland | 45 min |
| Sep 28, 10:41 PM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 49 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Beaver County6
- Erie County5
- Venango County4
- Washington County4
- Crawford County4
- Butler County4
- Allegheny County4
- Fayette County3
- Mercer County3
- Montgomery County3
- Lawrence County3
- Westmoreland County3
- Greene County2
- Chester County2
- Delaware County2
- Philadelphia County2
- Clarion County2
- Berks County2
- Indiana County2
- Lancaster County1
- York County1
- Susquehanna County1
- Columbia County1
- Northumberland County1
- Schuylkill County1
- Armstrong County1
- Jefferson County1
- Cambria County1
- Bedford County1
- Blair County1
- Huntingdon County1
- Lehigh County1
- Dauphin County1
- Lebanon County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20182020
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.