Alert archive / Pennsylvania / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Pennsylvania, 1992
241 severe thunderstorm warnings in 1992. 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 1992. Tap one for its archive.
- Severe Thunderstorm Warnings
- 241
- Busiest month
- July103 severe thunderstorm warnings
- Busiest day
- July 10, 199222 severe thunderstorm warnings
Over time
By month
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 |
|---|---|---|---|---|
| Jan 14, 5:14 AM EST | Severe Thunderstorm Warning | PBZ | Allegheny, Armstrong, Fayette, Westmoreland | 61 min |
| Jan 14, 6:20 AM EST | Severe Thunderstorm Warning | PBZ | Cambria | 40 min |
| Jan 14, 8:26 AM EST | Severe Thunderstorm Warning | CTP | Franklin | 64 min |
| Jan 14, 9:19 AM EST | Severe Thunderstorm Warning | CTP | Dauphin, Lancaster, York | 56 min |
| Jan 14, 9:19 AM EST | Severe Thunderstorm Warning | CTP | Adams | 56 min |
| Jan 14, 9:23 AM EST | Severe Thunderstorm Warning | CTP | Lebanon | 67 min |
| Jan 14, 9:56 AM EST | Severe Thunderstorm Warning | PHI | Chester | 64 min |
| Jan 14, 10:11 AM EST | Severe Thunderstorm Warning | CTP | Lancaster | 34 min |
| Jan 14, 10:44 AM EST | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne | 61 min |
| Jan 14, 10:44 AM EST | Severe Thunderstorm Warning | BGM | Wayne | 61 min |
| Jan 14, 10:50 AM EST | Severe Thunderstorm Warning | PHI | Delaware, Montgomery | 40 min |
| Jan 14, 10:56 AM EST | Severe Thunderstorm Warning | BGM | Wyoming | 64 min |
| Jan 14, 11:15 AM EST | Severe Thunderstorm Warning | PHI | Bucks, Philadelphia | 45 min |
| Apr 11, 6:02 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 58 min |
| Apr 11, 8:49 PM EDT | Severe Thunderstorm Warning | CLE | Venango | 56 min |
| Apr 16, 4:35 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 55 min |
| Apr 16, 5:20 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 55 min |
| Apr 24, 2:46 AM EDT | Severe Thunderstorm Warning | CLE | Venango | 59 min |
| Apr 24, 3:00 AM EDT | Severe Thunderstorm Warning | PBZ | Butler | 60 min |
| Apr 24, 6:38 AM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 37 min |
| Apr 24, 7:13 AM EDT | Severe Thunderstorm Warning | PBZ | Washington, Westmoreland | 62 min |
| Apr 24, 1:35 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Washington | 55 min |
| Apr 24, 1:51 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Butler, Westmoreland | 54 min |
| Apr 24, 2:37 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana, Westmoreland | 53 min |
| Apr 24, 2:49 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 26 min |
| Apr 24, 4:13 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 47 min |
| Apr 24, 4:23 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 52 min |
| Apr 24, 6:33 PM EDT | Severe Thunderstorm Warning | CTP | Northampton | 42 min |
| May 2, 5:28 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 62 min |
| May 2, 5:57 PM EDT | Severe Thunderstorm Warning | CLE | Warren | 63 min |
| May 2, 7:05 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 55 min |
| May 2, 7:05 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 55 min |
| May 2, 7:31 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Washington | 59 min |
| May 2, 8:00 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 60 min |
| May 2, 8:30 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 60 min |
| May 8, 8:15 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 30 min |
| May 8, 8:58 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Armstrong, Beaver, Butler | 62 min |
| May 8, 8:58 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 62 min |
| Jun 18, 1:56 AM EDT | Severe Thunderstorm Warning | CLE | Erie | 64 min |
| Jun 18, 10:59 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 61 min |
| Jun 19, 1:50 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 40 min |
| Jun 24, 3:05 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 55 min |
| Jun 24, 3:23 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 67 min |
| Jun 24, 3:31 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 59 min |
| Jun 24, 4:07 PM EDT | Severe Thunderstorm Warning | PBZ | Somerset | 53 min |
| Jun 24, 5:27 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 63 min |
| Jun 24, 6:17 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 43 min |
| Jun 30, 1:57 PM EDT | Severe Thunderstorm Warning | PBZ | Bedford | 63 min |
| Jun 30, 2:32 PM EDT | Severe Thunderstorm Warning | PBZ | Bedford | 88 min |
| Jun 30, 4:00 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 45 min |
| Jun 30, 5:22 PM EDT | Severe Thunderstorm Warning | CTP | Fulton | 53 min |
| Jul 3, 4:54 AM EDT | Severe Thunderstorm Warning | CLE | Erie | 66 min |
| Jul 5, 6:10 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 35 min |
| Jul 10, 2:52 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Beaver | 68 min |
| Jul 10, 3:24 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 66 min |
| Jul 10, 3:47 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 58 min |
| Jul 10, 4:06 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Greene | 54 min |
| Jul 10, 4:06 PM EDT | Severe Thunderstorm Warning | PBZ | Blair | 54 min |
| Jul 10, 4:33 PM EDT | Severe Thunderstorm Warning | PBZ | Blair, Cambria, Somerset | 57 min |
| Jul 10, 4:39 PM EDT | Severe Thunderstorm Warning | CLE | Lawrence | 29 min |
| Jul 10, 4:58 PM EDT | Severe Thunderstorm Warning | PBZ | Bedford | 62 min |
| Jul 10, 5:24 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 66 min |
| Jul 10, 5:39 PM EDT | Severe Thunderstorm Warning | CLE | Cameron, Elk | 66 min |
| Jul 10, 6:01 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Lebanon | 44 min |
| Jul 10, 6:16 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 59 min |
| Jul 10, 6:18 PM EDT | Severe Thunderstorm Warning | CTP | Berks | 27 min |
| Jul 10, 6:20 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 55 min |
| Jul 10, 6:28 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Montgomery | 47 min |
| Jul 10, 6:40 PM EDT | Severe Thunderstorm Warning | CTP | Berks | 35 min |
| Jul 10, 6:48 PM EDT | Severe Thunderstorm Warning | CLE | Elk | 42 min |
| Jul 10, 7:13 PM EDT | Severe Thunderstorm Warning | PHI | Delaware, Philadelphia | 32 min |
| Jul 10, 7:28 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 62 min |
| Jul 10, 7:28 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 62 min |
| Jul 10, 7:41 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 34 min |
| Jul 10, 7:44 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 61 min |
| Jul 10, 8:22 PM EDT | Severe Thunderstorm Warning | CLE | Lawrence | 38 min |
| Jul 10, 8:44 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Butler | 61 min |
| Jul 10, 8:44 PM EDT | Severe Thunderstorm Warning | PBZ | Clearfield | 61 min |
| Jul 10, 9:13 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Armstrong, Westmoreland | 62 min |
| Jul 10, 9:31 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 29 min |
| Jul 12, 11:30 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Butler | 60 min |
| Jul 13, 9:04 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 56 min |
| Jul 13, 9:15 PM EDT | Severe Thunderstorm Warning | CLE | Mercer | 60 min |
| Jul 13, 9:44 PM EDT | Severe Thunderstorm Warning | CLE | Venango | 61 min |
| Jul 13, 10:25 PM EDT | Severe Thunderstorm Warning | PBZ | Butler, Clarion | 2 hr |
| Jul 13, 10:54 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Jefferson | 96 min |
| Jul 13, 11:28 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Butler, Clarion | 2 hr |
| Jul 13, 11:28 PM EDT | Severe Thunderstorm Warning | PBZ | Clearfield, Indiana, Jefferson | 2 hr |
| Jul 13, 11:42 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 108 min |
| Jul 14, 12:44 AM EDT | Severe Thunderstorm Warning | CTP | Huntingdon, Mifflin | 46 min |
| Jul 14, 1:31 AM EDT | Severe Thunderstorm Warning | PBZ | Cambria, Indiana, Westmoreland | 59 min |
| Jul 14, 6:44 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 61 min |
| Jul 14, 8:16 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 59 min |
| Jul 14, 8:38 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 67 min |
| Jul 14, 9:03 PM EDT | Severe Thunderstorm Warning | CLE | Mercer | 57 min |
| Jul 14, 10:18 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 57 min |
| Jul 15, 2:39 PM EDT | Severe Thunderstorm Warning | BGM | Columbia | 66 min |
| Jul 15, 3:15 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 60 min |
| Jul 15, 3:22 PM EDT | Severe Thunderstorm Warning | CTP | Carbon | 38 min |
| Jul 15, 3:37 PM EDT | Severe Thunderstorm Warning | CTP | Carbon | 38 min |
| Jul 15, 3:44 PM EDT | Severe Thunderstorm Warning | PHI | Delaware, Philadelphia | 61 min |
| Jul 15, 3:49 PM EDT | Severe Thunderstorm Warning | CTP | Carbon, Monroe | 26 min |
| Jul 15, 4:02 PM EDT | Severe Thunderstorm Warning | CTP | Monroe | 28 min |
| Jul 15, 4:21 PM EDT | Severe Thunderstorm Warning | CTP | Monroe | 39 min |
| Jul 15, 4:44 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin | 61 min |
| Jul 15, 5:08 PM EDT | Severe Thunderstorm Warning | CTP | Lebanon | 67 min |
| Jul 15, 5:49 PM EDT | Severe Thunderstorm Warning | CTP | Berks | 26 min |
| Jul 15, 5:56 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna | 49 min |
| Jul 15, 5:56 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 49 min |
| Jul 15, 5:58 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 62 min |
| Jul 15, 5:59 PM EDT | Severe Thunderstorm Warning | CTP | Monroe, Northampton | 31 min |
| Jul 15, 6:35 PM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 55 min |
| Jul 15, 6:52 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 68 min |
| Jul 17, 4:10 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 65 min |
| Jul 17, 4:13 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland | 62 min |
| Jul 17, 5:17 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Dauphin | 58 min |
| Jul 17, 5:38 PM EDT | Severe Thunderstorm Warning | CTP | York | 67 min |
| Jul 17, 5:43 PM EDT | Severe Thunderstorm Warning | CTP | Northumberland, Snyder | 47 min |
| Jul 17, 6:14 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 61 min |
| Jul 17, 6:18 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Lebanon | 27 min |
| Jul 17, 6:43 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 47 min |
| Jul 17, 7:02 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 58 min |
| Jul 17, 7:13 PM EDT | Severe Thunderstorm Warning | CTP | Berks | 32 min |
| Jul 17, 7:24 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 66 min |
| Jul 17, 7:39 PM EDT | Severe Thunderstorm Warning | CTP | Berks | 36 min |
| Jul 17, 8:12 PM EDT | Severe Thunderstorm Warning | CTP | Berks | 33 min |
| Jul 17, 8:28 PM EDT | Severe Thunderstorm Warning | CTP | Lehigh | 32 min |
| Jul 17, 8:34 PM EDT | Severe Thunderstorm Warning | PHI | Delaware | 41 min |
| Jul 17, 8:41 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 64 min |
| Jul 17, 8:44 PM EDT | Severe Thunderstorm Warning | CTP | Lehigh | 31 min |
| Jul 17, 9:03 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery, Philadelphia | 42 min |
| Jul 18, 12:46 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 59 min |
| Jul 18, 5:03 PM EDT | Severe Thunderstorm Warning | PBZ | Greene, Washington | 57 min |
| Jul 20, 1:30 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 60 min |
| Jul 20, 2:25 PM EDT | Severe Thunderstorm Warning | CLE | Venango, Warren | 65 min |
| Jul 20, 3:14 PM EDT | Severe Thunderstorm Warning | CLE | Lawrence | 61 min |
| Jul 20, 4:39 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion, Jefferson | 66 min |
| Jul 20, 5:13 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 62 min |
| Jul 20, 5:56 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Butler, Clarion, Jefferson | 2 hr |
| Jul 20, 5:56 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 2 hr |
| Jul 20, 6:15 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 2 hr |
| Jul 20, 6:32 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 58 min |
| Jul 20, 8:24 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 51 min |
| Jul 23, 2:29 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 61 min |
| Jul 24, 6:23 PM EDT | Severe Thunderstorm Warning | CLE | Lawrence | 67 min |
| Jul 24, 6:45 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 60 min |
| Jul 24, 7:20 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 55 min |
| Jul 24, 8:10 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Armstrong, Westmoreland | 65 min |
| Jul 24, 9:18 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Indiana, Westmoreland | 117 min |
| Jul 29, 5:29 AM EDT | Severe Thunderstorm Warning | CLE | Erie | 61 min |
| Jul 29, 4:06 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 69 min |
| Jul 29, 4:30 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 60 min |
| Jul 31, 4:43 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 77 min |
| Jul 31, 5:46 PM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 59 min |
| Aug 4, 2:45 AM EDT | Severe Thunderstorm Warning | PBZ | Butler | 60 min |
| Aug 4, 1:21 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 54 min |
| Aug 4, 3:15 PM EDT | Severe Thunderstorm Warning | CTP | Lebanon | 45 min |
| Aug 4, 3:30 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 45 min |
| Aug 8, 4:18 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 57 min |
| Aug 8, 5:19 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 56 min |
| Aug 8, 5:51 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 69 min |
| Aug 8, 6:45 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 60 min |
| Aug 8, 7:05 PM EDT | Severe Thunderstorm Warning | CLE | Venango | 55 min |
| Aug 8, 7:07 PM EDT | Severe Thunderstorm Warning | CLE | Lawrence, Mercer | 68 min |
| Aug 8, 7:40 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 65 min |
| Aug 8, 7:41 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 64 min |
| Aug 8, 8:00 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 60 min |
| Aug 8, 9:20 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Butler | 100 min |
| Aug 8, 9:35 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 85 min |
| Aug 8, 11:00 PM EDT | Severe Thunderstorm Warning | PBZ | Cambria, Clearfield, Indiana, Westmoreland | 3 hr |
| Aug 8, 11:00 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Beaver | 3 hr |
| Aug 8, 11:00 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 3 hr |
| Aug 9, 12:15 AM EDT | Severe Thunderstorm Warning | PBZ | Somerset | 105 min |
| Aug 10, 7:41 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 64 min |
| Aug 11, 11:47 AM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Somerset | 118 min |
| Aug 11, 1:03 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 57 min |
| Aug 11, 1:07 PM EDT | Severe Thunderstorm Warning | CTP | Berks, Lehigh | 38 min |
| Aug 11, 1:24 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 51 min |
| Aug 11, 1:25 PM EDT | Severe Thunderstorm Warning | CTP | Lehigh | 35 min |
| Aug 11, 1:26 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin | 64 min |
| Aug 11, 1:37 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, Lebanon | 68 min |
| Aug 11, 1:44 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 31 min |
| Aug 11, 1:55 PM EDT | Severe Thunderstorm Warning | CTP | Northumberland | 50 min |
| Aug 11, 1:58 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 62 min |
| Aug 11, 2:05 PM EDT | Severe Thunderstorm Warning | CTP | Berks, Schuylkill | 25 min |
| Aug 11, 2:21 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 54 min |
| Aug 11, 2:21 PM EDT | Severe Thunderstorm Warning | CTP | Berks, Lehigh | 39 min |
| Aug 11, 2:30 PM EDT | Severe Thunderstorm Warning | CTP | Berks | 30 min |
| Aug 11, 2:33 PM EDT | Severe Thunderstorm Warning | CTP | Berks | 27 min |
| Aug 11, 2:36 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 39 min |
| Aug 11, 2:57 PM EDT | Severe Thunderstorm Warning | CTP | Carbon, Schuylkill | 33 min |
| Aug 11, 3:00 PM EDT | Severe Thunderstorm Warning | CTP | Berks, Lehigh | 30 min |
| Aug 11, 3:02 PM EDT | Severe Thunderstorm Warning | CTP | Berks | 28 min |
| Aug 11, 3:05 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 25 min |
| Aug 11, 3:19 PM EDT | Severe Thunderstorm Warning | PHI | Delaware, Philadelphia | 41 min |
| Aug 11, 3:27 PM EDT | Severe Thunderstorm Warning | CTP | Lehigh, Northampton | 33 min |
| Aug 25, 3:18 PM EDT | Severe Thunderstorm Warning | CTP | Monroe, Pike | 57 min |
| Aug 25, 4:43 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 32 min |
| Aug 26, 3:37 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 68 min |
| Aug 26, 6:08 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 67 min |
| Aug 27, 6:14 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 76 min |
| Aug 28, 6:02 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Franklin | 58 min |
| Aug 28, 6:06 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 69 min |
| Aug 28, 6:56 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 49 min |
| Aug 28, 7:11 PM EDT | Severe Thunderstorm Warning | PHI | Delaware | 64 min |
| Aug 28, 7:27 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 33 min |
| Aug 28, 7:37 PM EDT | Severe Thunderstorm Warning | CTP | Bradford | 68 min |
| Aug 28, 7:47 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery | 48 min |
| Aug 28, 7:57 PM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 38 min |
| Aug 28, 8:11 PM EDT | Severe Thunderstorm Warning | CTP | Sullivan | 34 min |
| Aug 28, 8:21 PM EDT | Severe Thunderstorm Warning | BGM | Columbia | 54 min |
| Aug 28, 8:45 PM EDT | Severe Thunderstorm Warning | CTP | Bradford | 30 min |
| Aug 28, 8:48 PM EDT | Severe Thunderstorm Warning | BGM | Wyoming | 27 min |
| Aug 28, 9:49 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 26 min |
| Aug 30, 1:10 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie, Warren | 65 min |
| Aug 30, 4:04 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion, Jefferson | 56 min |
| Sep 8, 3:13 PM EDT | Severe Thunderstorm Warning | PBZ | Somerset | 2 hr |
| Sep 8, 3:28 PM EDT | Severe Thunderstorm Warning | PBZ | Bedford | 107 min |
| Sep 9, 5:48 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 57 min |
| Sep 9, 7:04 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 56 min |
| Sep 10, 3:59 PM EDT | Severe Thunderstorm Warning | CTP | Bradford | 61 min |
| Sep 10, 4:04 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 56 min |
| Sep 10, 4:32 PM EDT | Severe Thunderstorm Warning | CTP | Fulton | 58 min |
| Sep 10, 4:43 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 62 min |
| Sep 10, 5:57 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 48 min |
| Sep 10, 6:15 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 45 min |
| Sep 10, 7:09 PM EDT | Severe Thunderstorm Warning | CTP | Pike | 66 min |
| Sep 10, 7:11 PM EDT | Severe Thunderstorm Warning | CTP | Monroe | 64 min |
| Sep 22, 4:59 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Franklin | 61 min |
| Sep 22, 6:28 PM EDT | Severe Thunderstorm Warning | CTP | Berks | 62 min |
| Sep 22, 6:34 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 41 min |
| Oct 9, 6:23 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin | 52 min |
| Oct 9, 6:26 PM EDT | Severe Thunderstorm Warning | BGM | Wyoming | 64 min |
| Oct 11, 5:46 PM EDT | Severe Thunderstorm Warning | BGM | Wyoming | 59 min |
| Oct 14, 12:29 PM EDT | Severe Thunderstorm Warning | PBZ | Clearfield | 61 min |
| Oct 14, 12:48 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 57 min |
| Oct 15, 4:27 PM EDT | Severe Thunderstorm Warning | CLE | Lawrence | 36 min |
| Oct 15, 4:28 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 62 min |
| Oct 15, 4:40 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 65 min |
| Oct 15, 5:15 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Clarion | 60 min |
| Oct 15, 5:50 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 70 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Erie County18
- Butler County16
- Westmoreland County15
- Berks County14
- Beaver County13
- Allegheny County11
- Armstrong County11
- Crawford County10
- Lancaster County9
- Chester County9
- Franklin County8
- Philadelphia County8
- Clarion County8
- Dauphin County7
- Indiana County7
- Lehigh County7
- Fayette County6
- Lebanon County6
- Delaware County6
- Montgomery County6
- Schuylkill County6
- Lawrence County6
- Jefferson County6
- Monroe County6
- Adams County5
- Bucks County5
- Venango County5
- Washington County5
- Somerset County5
- Cambria County4
- Wayne County4
- Wyoming County4
- Susquehanna County4
- Greene County4
- Bedford County4
- Lycoming County4
- Clearfield County4
- Carbon County4
- York County3
- Luzerne County3
19 more counties
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive19911993
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.