Alert archive / Pennsylvania / Severe Thunderstorm Warnings / 2026
Severe Thunderstorm Warnings in Pennsylvania, August 2026
157 severe thunderstorm warnings in August 2026. 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 August 2026. Tap one for its archive.
- Severe Thunderstorm Warnings
- 157
- Busiest day
- August 7, 202627 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 |
|---|---|---|---|---|
| Aug 2, 4:56 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Greene, Washington | 26 min |
| Aug 2, 5:27 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Beaver, Butler | 48 min |
| Aug 2, 7:43 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Indiana | 47 min |
| Aug 3, 3:05 AM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 40 min |
| Aug 6, 4:03 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland | 27 min |
| Aug 7, 12:28 PM EDT | Severe Thunderstorm Warning | CTP | Juniata, Perry | 47 min |
| Aug 7, 1:08 PM EDT | Severe Thunderstorm Warning | CTP | Juniata, Perry, Snyder | 67 min |
| Aug 7, 1:15 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Dauphin, Northumberland, Schuylkill | 45 min |
| Aug 7, 1:37 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 32 min |
| Aug 7, 1:40 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Franklin, Fulton | 50 min |
| Aug 7, 1:56 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 49 min |
| Aug 7, 2:01 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Franklin | 44 min |
| Aug 7, 2:17 PM EDT | Severe Thunderstorm Warning | BGM | Pike | 43 min |
| Aug 7, 2:34 PM EDT | Severe Thunderstorm Warning | CTP | Lebanon, Schuylkill | 41 min |
| Aug 7, 2:38 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 50 min |
| Aug 7, 2:44 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 31 min |
| Aug 7, 2:53 PM EDT | Severe Thunderstorm Warning | PHI | Northampton | 67 min |
| Aug 7, 2:58 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh | 62 min |
| Aug 7, 3:16 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 29 min |
| Aug 7, 3:16 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 44 min |
| Aug 7, 3:17 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 28 min |
| Aug 7, 3:25 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 65 min |
| Aug 7, 3:49 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 41 min |
| Aug 7, 4:06 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Lehigh, Monroe, Northampton | 54 min |
| Aug 7, 4:41 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 35 min |
| Aug 7, 4:50 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 55 min |
| Aug 7, 4:56 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 64 min |
| Aug 7, 5:01 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 44 min |
| Aug 7, 6:32 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Fulton | 15 min |
| Aug 7, 6:54 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 51 min |
| Aug 7, 7:15 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 41 min |
| Aug 7, 7:20 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Huntingdon, Mifflin | 40 min |
| Aug 8, 8:03 AM EDT | Severe Thunderstorm Warning | PBZ | Greene | 42 min |
| Aug 8, 12:22 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 38 min |
| Aug 8, 12:55 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 50 min |
| Aug 8, 12:59 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 31 min |
| Aug 8, 1:26 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 49 min |
| Aug 8, 1:44 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 46 min |
| Aug 8, 6:15 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 45 min |
| Aug 8, 6:27 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 48 min |
| Aug 8, 6:44 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 46 min |
| Aug 8, 7:06 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Lawrence | 39 min |
| Aug 8, 7:37 PM EDT | Severe Thunderstorm Warning | PBZ | Butler, Mercer, Venango | 38 min |
| Aug 8, 8:39 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion, Jefferson | 66 min |
| Aug 8, 8:43 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Butler | 47 min |
| Aug 9, 12:51 AM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Greene, Washington | 27 min |
| Aug 10, 8:08 AM EDT | Severe Thunderstorm Warning | CTP | Adams, Cumberland, Dauphin, Perry, York | 52 min |
| Aug 10, 8:51 AM EDT | Severe Thunderstorm Warning | CTP | Adams, Dauphin, Lancaster, York | 39 min |
| Aug 10, 10:09 AM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 51 min |
| Aug 10, 10:34 AM EDT | Severe Thunderstorm Warning | CTP | Warren | 41 min |
| Aug 10, 10:56 AM EDT | Severe Thunderstorm Warning | PBZ | Washington | 55 min |
| Aug 10, 11:14 AM EDT | Severe Thunderstorm Warning | CTP | Elk, McKean, Warren | 46 min |
| Aug 10, 11:53 AM EDT | Severe Thunderstorm Warning | CTP | Cameron, Elk, McKean, Potter | 52 min |
| Aug 10, 12:06 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Washington, Westmoreland | 54 min |
| Aug 10, 12:43 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Clearfield, Clinton | 47 min |
| Aug 10, 12:48 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Greene | 57 min |
| Aug 10, 1:03 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Westmoreland | 21 min |
| Aug 10, 1:13 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Somerset | 47 min |
| Aug 10, 2:02 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Cumberland, Franklin | 43 min |
| Aug 10, 2:06 PM EDT | Severe Thunderstorm Warning | CTP | Adams, York | 39 min |
| Aug 10, 2:21 PM EDT | Severe Thunderstorm Warning | BGM | Bradford, Susquehanna | 24 min |
| Aug 10, 2:43 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Cumberland, Franklin | 47 min |
| Aug 10, 2:45 PM EDT | Severe Thunderstorm Warning | CTP | York | 45 min |
| Aug 10, 3:10 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, Lebanon | 25 min |
| Aug 10, 3:21 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Lehigh, Monroe, Northampton | 39 min |
| Aug 10, 3:26 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Pike, Susquehanna, Wayne | 34 min |
| Aug 10, 3:27 PM EDT | Severe Thunderstorm Warning | CTP | York | 48 min |
| Aug 10, 3:50 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Lehigh, Northampton | 40 min |
| Aug 10, 3:58 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 32 min |
| Aug 10, 4:00 PM EDT | Severe Thunderstorm Warning | BGM | Pike | 30 min |
| Aug 10, 4:02 PM EDT | Severe Thunderstorm Warning | PHI | Monroe, Northampton | 43 min |
| Aug 10, 4:22 PM EDT | Severe Thunderstorm Warning | PBZ | Greene, Washington | 41 min |
| Aug 10, 4:46 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 20 min |
| Aug 11, 1:03 AM EDT | Severe Thunderstorm Warning | CTP | Somerset | 42 min |
| Aug 11, 3:42 AM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 48 min |
| Aug 11, 4:28 AM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 36 min |
| Aug 11, 4:53 AM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 40 min |
| Aug 11, 5:06 AM EDT | Severe Thunderstorm Warning | CTP | Warren | 32 min |
| Aug 11, 4:48 PM EDT | Severe Thunderstorm Warning | PHI | Monroe, Northampton | 43 min |
| Aug 11, 6:10 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne | 23 min |
| Aug 11, 6:22 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 40 min |
| Aug 12, 5:08 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 37 min |
| Aug 12, 5:14 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 31 min |
| Aug 12, 5:37 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 23 min |
| Aug 12, 6:11 PM EDT | Severe Thunderstorm Warning | BGM | Pike | 34 min |
| Aug 12, 8:07 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Pike, Susquehanna, Wayne, Wyoming | 53 min |
| Aug 12, 8:11 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna, Wayne | 27 min |
| Aug 12, 9:18 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 27 min |
| Aug 12, 9:32 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 43 min |
| Aug 16, 2:30 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Lawrence, Washington | 45 min |
| Aug 16, 3:05 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Beaver, Butler, Lawrence, Washington | 40 min |
| Aug 16, 3:25 PM EDT | Severe Thunderstorm Warning | PBZ | Greene, Washington | 50 min |
| Aug 16, 3:41 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Armstrong, Beaver, Butler, Lawrence, Westmoreland | 49 min |
| Aug 16, 4:05 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Greene | 40 min |
| Aug 16, 4:15 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Butler, Indiana, Westmoreland | 45 min |
| Aug 16, 4:32 PM EDT | Severe Thunderstorm Warning | CTP | Cambria, Clearfield, Somerset | 73 min |
| Aug 16, 4:40 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Westmoreland | 20 min |
| Aug 16, 4:44 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 16 min |
| Aug 16, 5:18 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Blair, Huntingdon, Somerset | 57 min |
| Aug 16, 6:08 PM EDT | Severe Thunderstorm Warning | CTP | Franklin, Fulton, Huntingdon | 52 min |
| Aug 16, 6:44 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Cumberland, Franklin, Perry | 46 min |
| Aug 17, 4:59 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 31 min |
| Aug 17, 5:09 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 36 min |
| Aug 17, 6:03 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Montgomery | 42 min |
| Aug 17, 6:45 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 32 min |
| Aug 20, 2:55 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Cumberland, Franklin, York | 50 min |
| Aug 20, 3:39 PM EDT | Severe Thunderstorm Warning | CTP | Adams, York | 51 min |
| Aug 20, 4:12 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 78 min |
| Aug 20, 4:50 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester | 40 min |
| Aug 20, 4:59 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 46 min |
| Aug 20, 5:27 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Chester, Delaware, Montgomery, Philadelphia | 48 min |
| Aug 20, 6:13 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Delaware, Montgomery, Philadelphia | 47 min |
| Aug 22, 4:06 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 39 min |
| Aug 22, 4:11 PM EDT | Severe Thunderstorm Warning | PBZ | Greene, Washington | 49 min |
| Aug 22, 4:31 PM EDT | Severe Thunderstorm Warning | PBZ | Butler, Clarion, Mercer, Venango | 44 min |
| Aug 22, 4:33 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Beaver, Butler | 42 min |
| Aug 22, 5:19 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Armstrong, Butler | 41 min |
| Aug 22, 5:43 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Armstrong, Indiana, Westmoreland | 47 min |
| Aug 22, 6:02 PM EDT | Severe Thunderstorm Warning | CTP | Elk | 43 min |
| Aug 22, 6:12 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Indiana | 48 min |
| Aug 22, 6:37 PM EDT | Severe Thunderstorm Warning | CTP | Elk, McKean | 38 min |
| Aug 22, 6:54 PM EDT | Severe Thunderstorm Warning | CTP | Blair, Cambria | 36 min |
| Aug 22, 7:01 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion, Indiana, Jefferson | 34 min |
| Aug 22, 7:02 PM EDT | Severe Thunderstorm Warning | CTP | McKean | 43 min |
| Aug 22, 7:08 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Clearfield, Elk | 52 min |
| Aug 22, 7:32 PM EDT | Severe Thunderstorm Warning | CTP | Blair, Cambria, Centre, Clearfield | 28 min |
| Aug 22, 7:36 PM EDT | Severe Thunderstorm Warning | CTP | Blair, Huntingdon, Mifflin | 39 min |
| Aug 22, 7:36 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Fulton | 39 min |
| Aug 22, 7:55 PM EDT | Severe Thunderstorm Warning | CTP | Blair, Cambria, Centre, Clearfield, Huntingdon | 50 min |
| Aug 22, 8:29 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Clearfield | 31 min |
| Aug 22, 8:29 PM EDT | Severe Thunderstorm Warning | CTP | Franklin, Fulton | 46 min |
| Aug 22, 9:10 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Clinton | 35 min |
| Aug 22, 9:10 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Cumberland, Franklin | 65 min |
| Aug 27, 4:06 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 39 min |
| Aug 27, 4:19 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 56 min |
| Aug 27, 4:26 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 49 min |
| Aug 27, 4:43 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming, Sullivan | 47 min |
| Aug 27, 5:56 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Franklin, Fulton | 49 min |
| Aug 27, 6:04 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna, Wayne | 41 min |
| Aug 27, 6:35 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Lycoming, Montour, Sullivan | 40 min |
| Aug 27, 6:42 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 63 min |
| Aug 27, 6:56 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 64 min |
| Aug 27, 6:56 PM EDT | Severe Thunderstorm Warning | CTP | Juniata, Mifflin, Snyder | 21 min |
| Aug 27, 7:10 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Dauphin, Perry | 50 min |
| Aug 27, 7:14 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne, Wayne | 61 min |
| Aug 27, 7:14 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Lycoming, Sullivan | 46 min |
| Aug 27, 7:22 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, Lebanon | 38 min |
| Aug 27, 7:46 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Washington | 30 min |
| Aug 27, 7:47 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Juniata, Northumberland, Perry, Schuylkill, Snyder | 28 min |
| Aug 27, 7:49 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 41 min |
| Aug 27, 7:51 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 39 min |
| Aug 27, 7:52 PM EDT | Severe Thunderstorm Warning | CTP | Franklin, Huntingdon, Juniata, Mifflin, Perry | 38 min |
| Aug 27, 8:17 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Dauphin, Perry | 43 min |
| Aug 27, 8:26 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Montour | 64 min |
| Aug 27, 8:40 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 50 min |
| Aug 27, 9:09 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin | 51 min |
| Aug 27, 10:22 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester | 38 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- York County13
- Cumberland County12
- Chester County12
- Franklin County11
- Lancaster County11
- Washington County10
- Allegheny County10
- Butler County9
- Adams County9
- Greene County8
- Perry County8
- Monroe County8
- Berks County8
- Susquehanna County8
- Westmoreland County8
- Fayette County7
- Armstrong County7
- Dauphin County7
- Northampton County7
- Wayne County7
- Beaver County6
- Bucks County6
- Fulton County6
- Delaware County6
- Centre County6
- Huntingdon County6
- Clearfield County6
- Indiana County5
- Juniata County5
- Schuylkill County5
- Luzerne County5
- Pike County5
- Lehigh County5
- Crawford County5
- Elk County5
- Blair County5
- Montgomery County4
- Columbia County4
- Bedford County4
- Mifflin County4
24 more counties
- Mercer County4
- Warren County4
- Lawrence County4
- Erie County4
- McKean County4
- Somerset County4
- Bradford County4
- Lackawanna County4
- Cambria County4
- Snyder County3
- Lebanon County3
- Carbon County3
- Clarion County3
- Lycoming County3
- Sullivan County3
- Northumberland County2
- Venango County2
- Jefferson County2
- Cameron County2
- Clinton County2
- Philadelphia County2
- Montour County2
- Potter County1
- Wyoming County1
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. Warning verification from the Mesonet's Cow. Rebuilt daily.