Alert archive / Pennsylvania / Severe Thunderstorm Warnings / 2018
Severe Thunderstorm Warnings in Pennsylvania, September 2018
23 severe thunderstorm warnings in September 2018. 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 2018. Tap one for its archive.
- Severe Thunderstorm Warnings
- 23
- Busiest day
- September 21, 20188 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 3, 3:23 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 37 min |
| Sep 3, 4:48 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 29 min |
| Sep 3, 7:00 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Lycoming, Montour, Northumberland, Union | 45 min |
| Sep 6, 1:40 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne | 22 min |
| Sep 6, 2:17 PM EDT | Severe Thunderstorm Warning | BGM | Bradford, Susquehanna, Wyoming | 15 min |
| Sep 6, 2:46 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 29 min |
| Sep 6, 3:23 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 29 min |
| Sep 6, 4:29 PM EDT | Severe Thunderstorm Warning | PBZ | Greene, Washington | 26 min |
| Sep 6, 4:32 PM EDT | Severe Thunderstorm Warning | PBZ | Greene, Washington | 17 min |
| Sep 17, 3:06 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 39 min |
| Sep 21, 5:29 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 2 hr |
| Sep 21, 6:30 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield, Elk, McKean, Warren | 60 min |
| Sep 21, 6:32 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Butler, Clarion, Forest, Lawrence, Mercer and 1 more | 43 min |
| Sep 21, 6:36 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Lawrence, Washington | 39 min |
| Sep 21, 7:09 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Armstrong, Beaver, Butler, Lawrence | 51 min |
| Sep 21, 7:14 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Butler, Clarion, Forest, Jefferson, Mercer and 1 more | 46 min |
| Sep 21, 7:37 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Elk, McKean, Potter | 83 min |
| Sep 21, 7:58 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Armstrong, Indiana, Westmoreland | 47 min |
| Sep 21, 8:15 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 45 min |
| Sep 21, 8:50 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 55 min |
| Sep 21, 8:58 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming, Potter, Tioga | 47 min |
| Sep 26, 7:06 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Delaware, Montgomery | 54 min |
| Sep 26, 7:53 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 52 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Washington County4
- Armstrong County4
- Mercer County3
- Butler County3
- Lawrence County3
- Lycoming County2
- Bradford County2
- Greene County2
- Warren County2
- Elk County2
- McKean County2
- Clarion County2
- Forest County2
- Venango County2
- Beaver County2
- Allegheny County2
- Jefferson County2
- Potter County2
- Chester County2
- Crawford County1
- Erie County1
- Columbia County1
- Montour County1
- Northumberland County1
- Union County1
- Lackawanna County1
- Luzerne County1
- Susquehanna County1
- Wyoming County1
- Franklin County1
- Clearfield County1
- Cameron County1
- Indiana County1
- Westmoreland County1
- Cambria County1
- Tioga County1
- Berks County1
- Delaware County1
- Montgomery County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20172019
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.