Alert archive / Pennsylvania / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Pennsylvania, 1993
302 severe thunderstorm warnings in 1993. 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 1993. Tap one for its archive.
- Severe Thunderstorm Warnings
- 302
- Busiest month
- June84 severe thunderstorm warnings
- Busiest day
- June 9, 199326 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 |
|---|---|---|---|---|
| Apr 1, 1:38 PM EST | Severe Thunderstorm Warning | PBZ | Cambria | 67 min |
| Apr 16, 12:45 AM EDT | Severe Thunderstorm Warning | CLE | Lawrence | 45 min |
| Apr 16, 12:51 AM EDT | Severe Thunderstorm Warning | PBZ | Butler | 39 min |
| Apr 16, 12:51 AM EDT | Severe Thunderstorm Warning | PBZ | Greene | 39 min |
| Apr 16, 12:58 AM EDT | Severe Thunderstorm Warning | CLE | Mercer | 47 min |
| Apr 16, 1:24 AM EDT | Severe Thunderstorm Warning | CLE | Butler, Crawford, Venango | 66 min |
| Apr 16, 1:35 AM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Fayette, Washington, Westmoreland | 55 min |
| Apr 16, 1:35 AM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Clarion | 55 min |
| Apr 16, 1:45 AM EDT | Severe Thunderstorm Warning | CLE | Erie | 45 min |
| Apr 16, 2:15 AM EDT | Severe Thunderstorm Warning | CLE | Warren | 45 min |
| Apr 16, 2:24 AM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Clarion, Indiana, Jefferson | 66 min |
| Apr 16, 2:24 AM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Westmoreland | 66 min |
| Apr 16, 2:46 AM EDT | Severe Thunderstorm Warning | CLE | Elk, McKean | 44 min |
| Apr 16, 3:39 AM EDT | Severe Thunderstorm Warning | CLE | Cameron, Potter | 66 min |
| Apr 16, 9:19 AM EDT | Severe Thunderstorm Warning | CTP | Cumberland | 56 min |
| Apr 16, 9:30 AM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 60 min |
| Apr 16, 9:45 AM EDT | Severe Thunderstorm Warning | CTP | Union | 60 min |
| Apr 16, 9:59 AM EDT | Severe Thunderstorm Warning | CTP | Bradford | 31 min |
| Apr 16, 6:57 PM EDT | Severe Thunderstorm Warning | PBZ | Bedford | 33 min |
| Apr 16, 7:30 PM EDT | Severe Thunderstorm Warning | PBZ | Bedford | 30 min |
| Apr 16, 7:48 PM EDT | Severe Thunderstorm Warning | CTP | Fulton | 57 min |
| Apr 25, 8:00 PM EDT | Severe Thunderstorm Warning | PBZ | Clearfield, Indiana | 60 min |
| Apr 26, 11:27 AM EDT | Severe Thunderstorm Warning | CTP | Franklin | 63 min |
| May 5, 2:46 PM EDT | Severe Thunderstorm Warning | CTP | Juniata, Snyder | 44 min |
| May 12, 2:10 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Washington, Westmoreland | 65 min |
| May 12, 2:17 PM EDT | Severe Thunderstorm Warning | PBZ | Somerset | 58 min |
| May 12, 2:17 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Beaver | 58 min |
| May 12, 2:20 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 55 min |
| May 12, 2:31 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 44 min |
| May 12, 2:59 PM EDT | Severe Thunderstorm Warning | PBZ | Cambria, Indiana | 61 min |
| May 12, 5:30 PM EDT | Severe Thunderstorm Warning | CTP | York | 60 min |
| May 12, 8:18 PM EDT | Severe Thunderstorm Warning | PBZ | Clearfield | 27 min |
| May 12, 8:44 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 61 min |
| May 31, 4:19 PM EDT | Severe Thunderstorm Warning | PBZ | Bedford | 41 min |
| May 31, 5:23 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 52 min |
| May 31, 8:02 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 43 min |
| Jun 5, 7:40 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 35 min |
| Jun 7, 9:52 PM EDT | Severe Thunderstorm Warning | PBZ | Greene, Washington | 68 min |
| Jun 8, 1:56 PM EDT | Severe Thunderstorm Warning | CLE | Mercer | 64 min |
| Jun 8, 2:34 PM EDT | Severe Thunderstorm Warning | CLE | Butler, Venango | 56 min |
| Jun 8, 3:22 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Clarion | 68 min |
| Jun 8, 4:25 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Butler | 35 min |
| Jun 8, 5:06 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Indiana, Westmoreland | 54 min |
| Jun 8, 5:56 PM EDT | Severe Thunderstorm Warning | PBZ | Blair, Cambria | 64 min |
| Jun 8, 7:01 PM EDT | Severe Thunderstorm Warning | PBZ | Somerset | 59 min |
| Jun 8, 7:09 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland | 66 min |
| Jun 8, 7:29 PM EDT | Severe Thunderstorm Warning | CLE | Lawrence | 61 min |
| Jun 8, 7:29 PM EDT | Severe Thunderstorm Warning | CTP | Adams, York | 61 min |
| Jun 8, 7:58 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 62 min |
| Jun 8, 8:23 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 67 min |
| Jun 8, 8:23 PM EDT | Severe Thunderstorm Warning | PBZ | Bedford, Somerset | 67 min |
| Jun 8, 8:23 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 67 min |
| Jun 8, 8:24 PM EDT | Severe Thunderstorm Warning | CLE | Lawrence | 51 min |
| Jun 8, 8:36 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Washington | 69 min |
| Jun 8, 9:01 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 29 min |
| Jun 8, 10:18 PM EDT | Severe Thunderstorm Warning | PBZ | Bedford, Blair | 42 min |
| Jun 8, 10:18 PM EDT | Severe Thunderstorm Warning | PBZ | Somerset | 42 min |
| Jun 8, 10:39 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 66 min |
| Jun 8, 10:56 PM EDT | Severe Thunderstorm Warning | PBZ | Bedford, Somerset | 49 min |
| Jun 8, 10:56 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 49 min |
| Jun 8, 11:57 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 63 min |
| Jun 9, 12:35 AM EDT | Severe Thunderstorm Warning | CTP | York | 25 min |
| Jun 9, 1:18 AM EDT | Severe Thunderstorm Warning | PBZ | Clearfield | 57 min |
| Jun 9, 12:19 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 26 min |
| Jun 9, 12:29 PM EDT | Severe Thunderstorm Warning | PBZ | Somerset | 61 min |
| Jun 9, 12:38 PM EDT | Severe Thunderstorm Warning | CTP | Bradford | 67 min |
| Jun 9, 3:15 PM EDT | Severe Thunderstorm Warning | CTP | Northampton | |
| Jun 9, 3:16 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 44 min |
| Jun 9, 3:26 PM EDT | Severe Thunderstorm Warning | PBZ | Bedford, Somerset | 64 min |
| Jun 9, 3:58 PM EDT | Severe Thunderstorm Warning | CTP | York | 47 min |
| Jun 9, 4:13 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Montgomery | 47 min |
| Jun 9, 4:30 PM EDT | Severe Thunderstorm Warning | PHI | Delaware, Philadelphia | 45 min |
| Jun 9, 4:36 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 54 min |
| Jun 9, 7:25 PM EDT | Severe Thunderstorm Warning | CTP | York | 50 min |
| Jun 9, 7:43 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery, Philadelphia | 62 min |
| Jun 9, 10:46 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 59 min |
| Jun 10, 12:46 AM EDT | Severe Thunderstorm Warning | CLE | Crawford | 59 min |
| Jun 15, 4:14 PM EDT | Severe Thunderstorm Warning | CTP | Bradford | 61 min |
| Jun 15, 5:33 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 42 min |
| Jun 15, 6:31 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 44 min |
| Jun 15, 7:00 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 45 min |
| Jun 15, 7:15 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna, Wyoming | 45 min |
| Jun 15, 7:33 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna | 42 min |
| Jun 15, 8:15 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 45 min |
| Jun 18, 4:13 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion, Jefferson | 62 min |
| Jun 18, 4:44 PM EDT | Severe Thunderstorm Warning | CLE | Lawrence | 61 min |
| Jun 18, 5:05 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 55 min |
| Jun 18, 5:16 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Butler | 59 min |
| Jun 18, 6:05 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Armstrong | 55 min |
| Jun 18, 6:05 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 55 min |
| Jun 19, 4:44 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, York | 61 min |
| Jun 19, 4:58 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 62 min |
| Jun 19, 9:31 PM EDT | Severe Thunderstorm Warning | CTP | Sullivan | 29 min |
| Jun 20, 6:50 AM EDT | Severe Thunderstorm Warning | BGM | Wayne | 25 min |
| Jun 20, 1:56 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 64 min |
| Jun 20, 2:36 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 54 min |
| Jun 20, 4:45 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 60 min |
| Jun 20, 5:15 PM EDT | Severe Thunderstorm Warning | CTP | Perry | 60 min |
| Jun 20, 6:10 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Dauphin | 65 min |
| Jun 20, 6:36 PM EDT | Severe Thunderstorm Warning | CTP | York | 69 min |
| Jun 20, 7:05 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 55 min |
| Jun 20, 7:16 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 29 min |
| Jun 20, 8:08 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 52 min |
| Jun 20, 8:09 PM EDT | Severe Thunderstorm Warning | CTP | Berks | 36 min |
| Jun 21, 3:24 PM EDT | Severe Thunderstorm Warning | CTP | Berks, Lebanon | 36 min |
| Jun 21, 3:35 PM EDT | Severe Thunderstorm Warning | CTP | Berks, Schuylkill | 40 min |
| Jun 21, 3:43 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna | 32 min |
| Jun 21, 3:49 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna | 26 min |
| Jun 21, 4:09 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 36 min |
| Jun 21, 4:24 PM EDT | Severe Thunderstorm Warning | CTP | Berks | 36 min |
| Jun 21, 4:30 PM EDT | Severe Thunderstorm Warning | CTP | Lehigh | 30 min |
| Jun 21, 5:41 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery | 64 min |
| Jun 26, 3:45 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 30 min |
| Jun 27, 6:50 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 55 min |
| Jun 27, 8:12 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 48 min |
| Jun 27, 8:28 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Venango | 62 min |
| Jun 27, 8:32 PM EDT | Severe Thunderstorm Warning | CLE | Mercer | 43 min |
| Jun 27, 9:17 PM EDT | Severe Thunderstorm Warning | CLE | McKean, Warren | 58 min |
| Jun 28, 6:19 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 56 min |
| Jul 4, 7:53 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Greene, Washington, Westmoreland | 67 min |
| Jul 4, 7:53 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 67 min |
| Jul 4, 8:06 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 69 min |
| Jul 6, 4:00 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 75 min |
| Jul 7, 2:18 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 57 min |
| Jul 7, 4:55 PM EDT | Severe Thunderstorm Warning | CLE | McKean | 65 min |
| Jul 7, 5:17 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 58 min |
| Jul 7, 9:14 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 46 min |
| Jul 7, 10:00 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 60 min |
| Jul 9, 5:20 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 100 min |
| Jul 9, 5:40 PM EDT | Severe Thunderstorm Warning | CTP | Sullivan | 35 min |
| Jul 9, 5:47 PM EDT | Severe Thunderstorm Warning | BGM | Wyoming | 43 min |
| Jul 9, 6:13 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 32 min |
| Jul 9, 6:16 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna | 44 min |
| Jul 9, 6:35 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 25 min |
| Jul 10, 1:10 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna | 25 min |
| Jul 10, 1:39 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 36 min |
| Jul 10, 2:02 PM EDT | Severe Thunderstorm Warning | CTP | Monroe | 34 min |
| Jul 10, 2:02 PM EDT | Severe Thunderstorm Warning | CTP | Pike | 53 min |
| Jul 10, 6:34 PM EDT | Severe Thunderstorm Warning | PBZ | Greene, Washington | 41 min |
| Jul 10, 6:40 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 35 min |
| Jul 10, 6:46 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Westmoreland | 74 min |
| Jul 10, 7:20 PM EDT | Severe Thunderstorm Warning | PBZ | Somerset | 55 min |
| Jul 10, 7:42 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 48 min |
| Jul 10, 7:55 PM EDT | Severe Thunderstorm Warning | PBZ | Cambria | 65 min |
| Jul 10, 8:25 PM EDT | Severe Thunderstorm Warning | PBZ | Bedford, Blair | 50 min |
| Jul 11, 5:47 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland | 43 min |
| Jul 11, 6:05 PM EDT | Severe Thunderstorm Warning | CTP | York | 55 min |
| Jul 11, 6:28 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 62 min |
| Jul 12, 6:28 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 62 min |
| Jul 14, 1:17 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 58 min |
| Jul 14, 2:36 PM EDT | Severe Thunderstorm Warning | CTP | Berks, Lehigh | 29 min |
| Jul 14, 3:00 PM EDT | Severe Thunderstorm Warning | PHI | Delaware, Montgomery, Philadelphia | 45 min |
| Jul 14, 3:47 PM EDT | Severe Thunderstorm Warning | CTP | Carbon | 28 min |
| Jul 14, 4:05 PM EDT | Severe Thunderstorm Warning | CTP | Monroe | 40 min |
| Jul 14, 9:57 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery | 33 min |
| Jul 14, 10:06 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 54 min |
| Jul 26, 2:02 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 43 min |
| Jul 26, 2:09 PM EDT | Severe Thunderstorm Warning | CLE | Warren | 66 min |
| Jul 26, 2:26 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Westmoreland | 64 min |
| Jul 26, 2:26 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 64 min |
| Jul 26, 2:26 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 64 min |
| Jul 26, 3:05 PM EDT | Severe Thunderstorm Warning | PBZ | Somerset | 40 min |
| Jul 26, 3:07 PM EDT | Severe Thunderstorm Warning | CLE | McKean | 68 min |
| Jul 26, 3:12 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 48 min |
| Jul 26, 3:30 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Clarion | 30 min |
| Jul 26, 3:42 PM EDT | Severe Thunderstorm Warning | CLE | Elk | 63 min |
| Jul 26, 3:57 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana, Jefferson | 48 min |
| Jul 26, 4:18 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 57 min |
| Jul 26, 4:22 PM EDT | Severe Thunderstorm Warning | CLE | Cameron | 68 min |
| Jul 26, 4:36 PM EDT | Severe Thunderstorm Warning | CLE | Forest | 69 min |
| Jul 26, 6:03 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 42 min |
| Jul 26, 6:54 PM EDT | Severe Thunderstorm Warning | PBZ | Cambria | 66 min |
| Jul 26, 7:07 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Westmoreland | 53 min |
| Jul 26, 7:54 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 51 min |
| Jul 26, 8:54 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 51 min |
| Jul 26, 9:17 PM EDT | Severe Thunderstorm Warning | PBZ | Cambria, Indiana | 43 min |
| Jul 28, 4:22 PM EDT | Severe Thunderstorm Warning | CLE | Lawrence | 53 min |
| Jul 28, 4:40 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Venango, Warren | 65 min |
| Jul 28, 5:22 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 68 min |
| Jul 28, 5:43 PM EDT | Severe Thunderstorm Warning | CLE | Elk, Forest | 62 min |
| Jul 28, 5:53 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 67 min |
| Jul 28, 7:52 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 53 min |
| Jul 28, 7:56 PM EDT | Severe Thunderstorm Warning | CLE | Mercer | 49 min |
| Jul 28, 8:11 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 2 hr |
| Jul 28, 9:02 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 58 min |
| Jul 28, 9:22 PM EDT | Severe Thunderstorm Warning | CLE | Mercer | 11 min |
| Jul 28, 9:45 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 75 min |
| Jul 28, 10:01 PM EDT | Severe Thunderstorm Warning | CLE | Lawrence | 44 min |
| Jul 28, 10:06 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Indiana, Westmoreland | 69 min |
| Jul 28, 10:06 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Washington | 69 min |
| Jul 28, 10:56 PM EDT | Severe Thunderstorm Warning | PBZ | Cambria, Somerset | 64 min |
| Jul 28, 10:56 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 64 min |
| Jul 29, 12:34 AM EDT | Severe Thunderstorm Warning | PBZ | Bedford | 26 min |
| Jul 29, 12:43 AM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 47 min |
| Jul 29, 1:55 AM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 65 min |
| Aug 2, 9:57 AM EDT | Severe Thunderstorm Warning | PBZ | Butler | 63 min |
| Aug 2, 10:44 AM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 46 min |
| Aug 2, 11:07 AM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 68 min |
| Aug 2, 2:11 PM EDT | Severe Thunderstorm Warning | CLE | Lawrence | 49 min |
| Aug 2, 2:11 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 34 min |
| Aug 2, 2:50 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 55 min |
| Aug 2, 3:21 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna | 39 min |
| Aug 2, 3:31 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 29 min |
| Aug 2, 3:32 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Westmoreland | 58 min |
| Aug 2, 3:46 PM EDT | Severe Thunderstorm Warning | CLE | Venango | 59 min |
| Aug 2, 4:13 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 62 min |
| Aug 2, 4:20 PM EDT | Severe Thunderstorm Warning | CLE | Warren | 55 min |
| Aug 2, 4:25 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 65 min |
| Aug 2, 6:12 PM EDT | Severe Thunderstorm Warning | PBZ | Cambria | 63 min |
| Aug 11, 3:15 PM EDT | Severe Thunderstorm Warning | PBZ | Bedford | 60 min |
| Aug 11, 6:27 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 33 min |
| Aug 11, 7:13 PM EDT | Severe Thunderstorm Warning | CTP | Adams, York | 32 min |
| Aug 11, 7:50 PM EDT | Severe Thunderstorm Warning | CTP | Adams, York | 55 min |
| Aug 11, 8:55 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 50 min |
| Aug 14, 12:58 AM EDT | Severe Thunderstorm Warning | CLE | Erie | 62 min |
| Aug 17, 1:41 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 64 min |
| Aug 17, 4:27 PM EDT | Severe Thunderstorm Warning | PBZ | Blair | 63 min |
| Aug 17, 4:27 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Westmoreland | 63 min |
| Aug 17, 4:27 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 63 min |
| Aug 17, 5:27 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Somerset, Westmoreland | 93 min |
| Aug 17, 5:27 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 93 min |
| Aug 17, 5:33 PM EDT | Severe Thunderstorm Warning | CTP | Adams, York | 57 min |
| Aug 17, 5:36 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 69 min |
| Aug 17, 6:57 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Somerset, Westmoreland | 63 min |
| Aug 27, 5:38 PM EDT | Severe Thunderstorm Warning | CLE | Forest, Venango | 82 min |
| Aug 27, 6:36 PM EDT | Severe Thunderstorm Warning | CLE | Forest, Venango | 2 hr |
| Aug 27, 7:04 PM EDT | Severe Thunderstorm Warning | CLE | Mercer | 56 min |
| Aug 27, 8:28 PM EDT | Severe Thunderstorm Warning | CLE | Lawrence | 47 min |
| Aug 28, 1:20 PM EDT | Severe Thunderstorm Warning | BGM | Columbia | 25 min |
| Aug 28, 1:29 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna | 46 min |
| Aug 28, 1:42 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Wayne | 48 min |
| Aug 28, 1:48 PM EDT | Severe Thunderstorm Warning | BGM | Columbia | 42 min |
| Aug 28, 1:58 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 47 min |
| Aug 28, 2:31 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna | 44 min |
| Aug 28, 3:22 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Washington | 68 min |
| Aug 28, 4:31 PM EDT | Severe Thunderstorm Warning | CTP | Berks | 59 min |
| Aug 28, 5:45 PM EDT | Severe Thunderstorm Warning | CTP | Berks | 52 min |
| Aug 28, 6:34 PM EDT | Severe Thunderstorm Warning | CTP | Adams, York | 26 min |
| Aug 28, 7:18 PM EDT | Severe Thunderstorm Warning | CTP | York | 27 min |
| Aug 28, 7:40 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 35 min |
| Aug 30, 6:05 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 55 min |
| Aug 30, 6:25 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 95 min |
| Aug 31, 9:20 AM EDT | Severe Thunderstorm Warning | CLE | Crawford | 25 min |
| Aug 31, 1:08 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 67 min |
| Aug 31, 1:36 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 69 min |
| Aug 31, 1:41 PM EDT | Severe Thunderstorm Warning | CLE | Potter | 64 min |
| Aug 31, 2:32 PM EDT | Severe Thunderstorm Warning | CLE | Warren | 58 min |
| Aug 31, 2:35 PM EDT | Severe Thunderstorm Warning | CLE | Mercer | 55 min |
| Aug 31, 2:43 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 62 min |
| Aug 31, 3:55 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 65 min |
| Aug 31, 3:59 PM EDT | Severe Thunderstorm Warning | CLE | Elk | 61 min |
| Aug 31, 4:12 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Clarion | 63 min |
| Aug 31, 5:00 PM EDT | Severe Thunderstorm Warning | CTP | Tioga | 30 min |
| Aug 31, 5:59 PM EDT | Severe Thunderstorm Warning | CTP | Tioga | 46 min |
| Aug 31, 6:03 PM EDT | Severe Thunderstorm Warning | CTP | Bradford | 42 min |
| Sep 2, 3:45 PM EDT | Severe Thunderstorm Warning | CLE | Elk | 60 min |
| Sep 2, 3:47 PM EDT | Severe Thunderstorm Warning | PBZ | Bedford | 58 min |
| Sep 2, 3:53 PM EDT | Severe Thunderstorm Warning | PBZ | Clearfield | 52 min |
| Sep 2, 4:03 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 57 min |
| Sep 2, 4:16 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 44 min |
| Sep 2, 4:27 PM EDT | Severe Thunderstorm Warning | CTP | Fulton | 63 min |
| Sep 2, 4:45 PM EDT | Severe Thunderstorm Warning | CLE | Cameron | 60 min |
| Sep 2, 4:45 PM EDT | Severe Thunderstorm Warning | PBZ | Bedford | 60 min |
| Sep 2, 4:59 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 61 min |
| Sep 2, 5:06 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 69 min |
| Sep 2, 5:14 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 2 hr |
| Sep 2, 5:25 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 65 min |
| Sep 2, 6:00 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 60 min |
| Sep 2, 6:26 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 64 min |
| Sep 2, 6:51 PM EDT | Severe Thunderstorm Warning | CLE | Lawrence | 39 min |
| Sep 2, 7:05 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 55 min |
| Sep 2, 7:10 PM EDT | Severe Thunderstorm Warning | CLE | Mercer | 65 min |
| Sep 2, 7:11 PM EDT | Severe Thunderstorm Warning | CLE | Venango, Warren | 64 min |
| Sep 2, 7:35 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 55 min |
| Sep 2, 8:18 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 57 min |
| Sep 2, 8:29 PM EDT | Severe Thunderstorm Warning | CLE | McKean, Warren | 61 min |
| Sep 3, 12:35 AM EDT | Severe Thunderstorm Warning | BGM | Wyoming | 25 min |
| Sep 3, 12:49 AM EDT | Severe Thunderstorm Warning | BGM | Wyoming | 26 min |
| Sep 3, 3:09 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Somerset | 66 min |
| Sep 3, 3:45 PM EDT | Severe Thunderstorm Warning | CLE | Lawrence | 45 min |
| Sep 3, 3:50 PM EDT | Severe Thunderstorm Warning | CLE | Mercer | 40 min |
| Sep 3, 3:57 PM EDT | Severe Thunderstorm Warning | CLE | Venango | 63 min |
| Sep 3, 4:09 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 36 min |
| Sep 3, 4:22 PM EDT | Severe Thunderstorm Warning | CTP | Sullivan | 38 min |
| Sep 3, 4:24 PM EDT | Severe Thunderstorm Warning | PBZ | Butler, Clarion | 66 min |
| Sep 3, 4:28 PM EDT | Severe Thunderstorm Warning | CTP | Berks | 47 min |
| Sep 3, 4:46 PM EDT | Severe Thunderstorm Warning | CTP | Lebanon | 59 min |
| Sep 3, 4:51 PM EDT | Severe Thunderstorm Warning | BGM | Wyoming | 69 min |
| Sep 3, 5:21 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 69 min |
| Sep 3, 6:39 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 66 min |
| Sep 3, 6:58 PM EDT | Severe Thunderstorm Warning | BGM | Columbia | 62 min |
| Sep 3, 7:00 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 45 min |
| Sep 3, 7:16 PM EDT | Severe Thunderstorm Warning | CTP | Berks | 59 min |
| Sep 3, 7:24 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 66 min |
| Sep 3, 7:26 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 49 min |
| Sep 3, 7:51 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 69 min |
| Sep 3, 8:06 PM EDT | Severe Thunderstorm Warning | CTP | Lehigh | 31 min |
| Sep 9, 4:33 PM EDT | Severe Thunderstorm Warning | CTP | Franklin, Fulton | 57 min |
| Sep 10, 1:36 AM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 54 min |
| Sep 27, 12:50 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 55 min |
| Sep 28, 7:48 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Armstrong, Beaver | 42 min |
| Nov 17, 2:06 PM EST | Severe Thunderstorm Warning | PBZ | Greene | 39 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Clarion County16
- York County15
- Butler County14
- Crawford County14
- Westmoreland County14
- Armstrong County14
- Somerset County13
- Fayette County12
- Bedford County12
- Lancaster County12
- Erie County11
- Indiana County11
- Lawrence County10
- Greene County10
- Washington County10
- Wayne County10
- Mercer County9
- Venango County9
- Allegheny County9
- Susquehanna County9
- Lackawanna County9
- Berks County9
- Cambria County8
- Warren County8
- Adams County8
- Franklin County7
- Beaver County6
- Montgomery County6
- Elk County5
- McKean County5
- Cumberland County5
- Wyoming County5
- Centre County5
- Jefferson County4
- Bradford County4
- Clearfield County4
- Chester County4
- Blair County4
- Forest County4
- Cameron County3
24 more counties
- Fulton County3
- Bucks County3
- Philadelphia County3
- Sullivan County3
- Lehigh County3
- Luzerne County3
- Columbia County3
- Potter County2
- Lycoming County2
- Huntingdon County2
- Clinton County2
- Delaware County2
- Lebanon County2
- Monroe County2
- Tioga County2
- Union County1
- Juniata County1
- Snyder County1
- Northampton County1
- Perry County1
- Dauphin County1
- Schuylkill County1
- Pike County1
- Carbon County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive19921994
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.