Weather alerts in Pennsylvania, 1991
243 weather alerts in 1991, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in 1991. Tap one for its archive.
- Alerts
- 243
- Warnings
- 243
- Watches
- 0
- Advisories
- 0
- Busiest month
- July88 alerts
- Busiest day
- July 7, 199127 alerts
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 |
|---|---|---|---|---|
| Mar 2, 3:19 PM EST | Severe Thunderstorm Warning | CLE | Lawrence, Mercer | 41 min |
| Mar 2, 4:18 PM EST | Severe Thunderstorm Warning | PBZ | Armstrong, Butler, Clarion | 57 min |
| Mar 2, 6:12 PM EST | Severe Thunderstorm Warning | CLE | McKean, Potter | 63 min |
| Mar 26, 10:13 PM EST | Severe Thunderstorm Warning | PBZ | Fayette, Washington | 62 min |
| Mar 28, 12:20 AM EST | Severe Thunderstorm Warning | CLE | Crawford, Erie | 85 min |
| Apr 8, 3:31 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 74 min |
| Apr 9, 7:29 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 61 min |
| Apr 9, 7:31 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Beaver, Washington | 59 min |
| Apr 9, 7:31 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 59 min |
| Apr 9, 7:49 PM EDT | Severe Thunderstorm Warning | CLE | Lawrence | 51 min |
| Apr 9, 7:54 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Westmoreland | 81 min |
| Apr 9, 7:54 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Butler | 81 min |
| Apr 9, 8:13 PM EDT | Flash Flood Warning | PBZ | Allegheny, Beaver, Greene, Washington | 3 hr |
| Apr 9, 8:36 PM EDT | Severe Thunderstorm Warning | PBZ | Cambria, Indiana, Somerset | 54 min |
| Apr 9, 8:46 PM EDT | Tornado Warning | PBZ | Fayette | 119 min |
| Apr 9, 9:10 PM EDT | Flash Flood Warning | PBZ | Armstrong, Butler | 2 hr |
| Apr 9, 9:24 PM EDT | Severe Thunderstorm Warning | PBZ | Bedford, Blair | 66 min |
| Apr 9, 9:24 PM EDT | Severe Thunderstorm Warning | PBZ | Clearfield, Jefferson | 66 min |
| Apr 9, 9:36 PM EDT | Tornado Warning | PBZ | Bedford | 54 min |
| Apr 9, 10:20 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Perry | 25 min |
| Apr 9, 10:20 PM EDT | Severe Thunderstorm Warning | CTP | York | 25 min |
| Apr 9, 10:45 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Lancaster, York | 60 min |
| Apr 9, 10:45 PM EDT | Severe Thunderstorm Warning | CTP | Lebanon | 60 min |
| Apr 28, 8:20 PM EDT | Flash Flood Warning | CLE | McKean | 3 hr |
| Apr 29, 12:20 AM EDT | Severe Thunderstorm Warning | CLE | Crawford | 55 min |
| May 1, 2:05 PM EDT | Severe Thunderstorm Warning | CLE | Mercer | 55 min |
| May 1, 2:27 PM EDT | Severe Thunderstorm Warning | CLE | Lawrence | 63 min |
| May 1, 2:41 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 64 min |
| May 1, 2:41 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 64 min |
| May 1, 2:41 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 64 min |
| May 1, 2:58 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 62 min |
| May 1, 4:20 PM EDT | Severe Thunderstorm Warning | PBZ | Cambria, Clearfield, Somerset | 55 min |
| May 1, 5:09 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 66 min |
| May 1, 5:18 PM EDT | Severe Thunderstorm Warning | PBZ | Bedford, Blair | 57 min |
| May 1, 7:06 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 69 min |
| May 1, 7:27 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 63 min |
| May 6, 1:11 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 64 min |
| May 6, 1:20 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 55 min |
| May 6, 1:44 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 61 min |
| May 6, 2:02 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 58 min |
| May 6, 2:18 PM EDT | Tornado Warning | PBZ | Armstrong, Westmoreland | 57 min |
| May 6, 2:34 PM EDT | Severe Thunderstorm Warning | PBZ | Cambria, Somerset | 56 min |
| May 6, 2:34 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 56 min |
| May 6, 2:43 PM EDT | Severe Thunderstorm Warning | PBZ | Clearfield, Jefferson | 62 min |
| May 6, 3:05 PM EDT | Severe Thunderstorm Warning | PBZ | Bedford | 55 min |
| May 6, 3:27 PM EDT | Severe Thunderstorm Warning | PBZ | Blair | 63 min |
| May 6, 3:39 PM EDT | Severe Thunderstorm Warning | CTP | Franklin, Fulton, Huntingdon | 51 min |
| May 6, 3:57 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 48 min |
| May 6, 4:13 PM EDT | Severe Thunderstorm Warning | CTP | Juniata, Perry | 62 min |
| May 6, 4:13 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Cumberland | 62 min |
| May 6, 4:31 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 59 min |
| May 6, 4:46 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, York | 59 min |
| May 6, 5:14 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, Lebanon | 46 min |
| May 6, 5:43 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 32 min |
| May 6, 5:49 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 56 min |
| May 6, 6:06 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery | 54 min |
| May 6, 6:26 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 64 min |
| May 6, 6:48 PM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 27 min |
| May 13, 2:35 PM EDT | Flash Flood Warning | PBZ | Clearfield | 115 min |
| May 13, 2:51 PM EDT | Flash Flood Warning | CLE | Cameron, Elk | 3 hr |
| May 13, 3:17 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 58 min |
| May 13, 3:35 PM EDT | Flash Flood Warning | PBZ | Allegheny | 115 min |
| May 13, 4:10 PM EDT | Severe Thunderstorm Warning | CTP | Northumberland, Union | 65 min |
| May 13, 4:10 PM EDT | Severe Thunderstorm Warning | CTP | Montour | 65 min |
| May 13, 4:24 PM EDT | Flash Flood Warning | CLE | Lawrence | 2 hr |
| May 13, 4:28 PM EDT | Flash Flood Warning | PBZ | Clearfield | 3 hr |
| May 13, 4:59 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion, Jefferson | 61 min |
| May 13, 5:05 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 40 min |
| May 13, 5:43 PM EDT | Flash Flood Warning | PBZ | Clarion, Jefferson | 2 hr |
| May 13, 11:39 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 66 min |
| May 14, 11:21 PM EDT | Severe Thunderstorm Warning | CTP | Berks | 69 min |
| May 17, 3:10 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 65 min |
| May 24, 3:33 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 57 min |
| May 25, 2:31 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 3 hr |
| May 25, 4:31 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 59 min |
| May 25, 5:28 PM EDT | Severe Thunderstorm Warning | CLE | Warren | 62 min |
| May 29, 2:40 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 65 min |
| May 29, 3:17 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 43 min |
| May 29, 4:19 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 56 min |
| May 29, 4:39 PM EDT | Severe Thunderstorm Warning | CTP | Juniata, Perry, Snyder | 66 min |
| May 29, 5:14 PM EDT | Severe Thunderstorm Warning | CTP | Berks | 31 min |
| May 30, 1:38 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Indiana | 67 min |
| May 30, 3:05 PM EDT | Severe Thunderstorm Warning | PBZ | Cambria | 55 min |
| May 30, 3:21 PM EDT | Severe Thunderstorm Warning | CTP | Lebanon | 69 min |
| May 30, 4:17 PM EDT | Severe Thunderstorm Warning | CTP | Berks | 28 min |
| May 30, 5:29 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 46 min |
| May 30, 5:55 PM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 35 min |
| May 31, 12:55 AM EDT | Flash Flood Warning | PBZ | Washington | 3 hr |
| May 31, 2:02 PM EDT | Severe Thunderstorm Warning | CTP | Lehigh, Northampton | 58 min |
| Jun 11, 2:39 PM EDT | Severe Thunderstorm Warning | CLE | McKean, Potter | 66 min |
| Jun 11, 6:15 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 45 min |
| Jun 11, 6:35 PM EDT | Severe Thunderstorm Warning | PBZ | Cambria | 55 min |
| Jun 11, 9:07 PM EDT | Severe Thunderstorm Warning | CTP | Berks | 68 min |
| Jun 11, 9:29 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 46 min |
| Jun 15, 2:03 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 57 min |
| Jun 15, 3:45 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 60 min |
| Jun 15, 3:54 PM EDT | Severe Thunderstorm Warning | CLE | McKean | 66 min |
| Jun 15, 4:16 PM EDT | Severe Thunderstorm Warning | CLE | Forest, Venango | 59 min |
| Jun 15, 4:57 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion, Jefferson | 63 min |
| Jun 15, 5:57 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 63 min |
| Jun 15, 7:00 PM EDT | Severe Thunderstorm Warning | PBZ | Clearfield, Jefferson | 90 min |
| Jun 15, 8:31 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 59 min |
| Jun 15, 9:27 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 63 min |
| Jun 16, 3:47 PM EDT | Severe Thunderstorm Warning | PHI | Delaware | 43 min |
| Jun 16, 3:57 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 33 min |
| Jun 16, 4:16 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery, Philadelphia | 29 min |
| Jun 16, 10:39 PM EDT | Flash Flood Warning | PBZ | Fayette, Washington, Westmoreland | 3 hr |
| Jun 16, 10:52 PM EDT | Flash Flood Warning | PBZ | Washington | 3 hr |
| Jun 16, 10:52 PM EDT | Flash Flood Warning | PBZ | Fayette, Westmoreland | 3 hr |
| Jun 22, 6:21 PM EDT | Flash Flood Warning | PBZ | Clearfield | 3 hr |
| Jun 30, 12:37 PM EDT | Severe Thunderstorm Warning | CLE | Lawrence, Mercer | 68 min |
| Jun 30, 1:07 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 68 min |
| Jun 30, 1:19 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 56 min |
| Jun 30, 1:21 PM EDT | Severe Thunderstorm Warning | PBZ | Clearfield, Jefferson | 69 min |
| Jun 30, 1:56 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Beaver | 94 min |
| Jun 30, 2:00 PM EDT | Severe Thunderstorm Warning | CLE | Lawrence | 30 min |
| Jun 30, 2:36 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 69 min |
| Jun 30, 6:11 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 64 min |
| Jul 5, 1:06 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 69 min |
| Jul 5, 4:32 PM EDT | Severe Thunderstorm Warning | PBZ | Blair | 58 min |
| Jul 5, 4:59 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 61 min |
| Jul 5, 5:09 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 66 min |
| Jul 5, 5:46 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon, Mifflin | 59 min |
| Jul 6, 1:33 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 57 min |
| Jul 6, 2:18 PM EDT | Severe Thunderstorm Warning | CLE | Mercer | 57 min |
| Jul 6, 2:52 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Butler, Clarion | 68 min |
| Jul 6, 3:05 PM EDT | Severe Thunderstorm Warning | CLE | Lawrence | 55 min |
| Jul 6, 3:15 PM EDT | Severe Thunderstorm Warning | CLE | Venango | 60 min |
| Jul 6, 4:00 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 75 min |
| Jul 6, 4:13 PM EDT | Flash Flood Warning | CLE | Lawrence | 62 min |
| Jul 6, 4:13 PM EDT | Severe Thunderstorm Warning | CLE | Lawrence | 62 min |
| Jul 6, 5:03 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 57 min |
| Jul 6, 5:18 PM EDT | Flash Flood Warning | CLE | Lawrence | 57 min |
| Jul 6, 5:18 PM EDT | Severe Thunderstorm Warning | CLE | Lawrence | 57 min |
| Jul 6, 5:38 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 52 min |
| Jul 6, 5:50 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 55 min |
| Jul 6, 6:50 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 55 min |
| Jul 7, 3:27 AM EDT | Severe Thunderstorm Warning | CLE | Erie | 63 min |
| Jul 7, 4:12 AM EDT | Severe Thunderstorm Warning | CLE | Warren | 63 min |
| Jul 7, 5:02 AM EDT | Severe Thunderstorm Warning | CLE | Erie | 58 min |
| Jul 7, 5:47 AM EDT | Severe Thunderstorm Warning | CLE | Crawford | 58 min |
| Jul 7, 6:00 AM EDT | Severe Thunderstorm Warning | CLE | Erie | 60 min |
| Jul 7, 6:42 AM EDT | Severe Thunderstorm Warning | CLE | Crawford | 63 min |
| Jul 7, 7:36 AM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 69 min |
| Jul 7, 8:54 AM EDT | Severe Thunderstorm Warning | CTP | Centre | 66 min |
| Jul 7, 10:38 AM EDT | Severe Thunderstorm Warning | CTP | Lehigh | 67 min |
| Jul 7, 11:10 AM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 65 min |
| Jul 7, 11:10 AM EDT | Severe Thunderstorm Warning | PHI | Chester | 65 min |
| Jul 7, 11:12 AM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 63 min |
| Jul 7, 11:21 AM EDT | Severe Thunderstorm Warning | PBZ | Blair, Cambria | 69 min |
| Jul 7, 11:52 AM EDT | Severe Thunderstorm Warning | PHI | Delaware | 53 min |
| Jul 7, 12:02 PM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 43 min |
| Jul 7, 12:06 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon, Mifflin | 54 min |
| Jul 7, 12:44 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 31 min |
| Jul 7, 12:56 PM EDT | Severe Thunderstorm Warning | CTP | York | 49 min |
| Jul 7, 1:04 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 26 min |
| Jul 7, 1:22 PM EDT | Tornado Warning | CTP | York | 23 min |
| Jul 7, 1:45 PM EDT | Severe Thunderstorm Warning | CTP | York | 30 min |
| Jul 7, 4:37 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 68 min |
| Jul 7, 4:37 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 68 min |
| Jul 7, 5:04 PM EDT | Tornado Warning | PBZ | Greene, Washington | 56 min |
| Jul 7, 6:28 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 62 min |
| Jul 7, 7:09 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 66 min |
| Jul 7, 7:19 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Somerset | 56 min |
| Jul 7, 8:59 PM EDT | Severe Thunderstorm Warning | CLE | Venango | 61 min |
| Jul 7, 10:46 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 59 min |
| Jul 7, 10:59 PM EDT | Severe Thunderstorm Warning | CLE | Lawrence, Mercer | 61 min |
| Jul 7, 11:21 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Beaver, Butler, Washington | 2 hr |
| Jul 7, 11:26 PM EDT | Severe Thunderstorm Warning | CLE | Warren | 64 min |
| Jul 7, 11:43 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Venango | 62 min |
| Jul 8, 12:10 AM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Clarion | 80 min |
| Jul 8, 12:16 AM EDT | Severe Thunderstorm Warning | CLE | Elk, Forest, McKean | 59 min |
| Jul 8, 12:34 AM EDT | Severe Thunderstorm Warning | PBZ | Indiana, Westmoreland | 86 min |
| Jul 8, 12:34 AM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 86 min |
| Jul 8, 12:45 AM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 75 min |
| Jul 8, 12:53 AM EDT | Flash Flood Warning | PBZ | Allegheny, Butler | 97 min |
| Jul 8, 1:07 AM EDT | Severe Thunderstorm Warning | PBZ | Cambria, Clearfield | 83 min |
| Jul 8, 1:07 AM EDT | Severe Thunderstorm Warning | PBZ | Somerset | 83 min |
| Jul 8, 1:28 AM EDT | Severe Thunderstorm Warning | CLE | Crawford | 47 min |
| Jul 8, 1:40 AM EDT | Severe Thunderstorm Warning | PBZ | Bedford, Blair | 50 min |
| Jul 8, 1:51 AM EDT | Severe Thunderstorm Warning | CLE | Mercer | 54 min |
| Jul 8, 3:40 AM EDT | Severe Thunderstorm Warning | PBZ | Blair, Cambria | 65 min |
| Jul 13, 7:58 AM EDT | Flash Flood Warning | PHI | Philadelphia | 92 min |
| Jul 13, 6:52 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Montgomery | 53 min |
| Jul 13, 7:47 PM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 58 min |
| Jul 22, 5:14 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 61 min |
| Jul 22, 5:14 PM EDT | Severe Thunderstorm Warning | CLE | Forest | 61 min |
| Jul 23, 11:40 AM EDT | Severe Thunderstorm Warning | CLE | McKean | 65 min |
| Jul 23, 12:39 PM EDT | Severe Thunderstorm Warning | CLE | Lawrence, Mercer | 66 min |
| Jul 23, 12:53 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 67 min |
| Jul 23, 1:00 PM EDT | Tornado Warning | CLE | Lawrence | 45 min |
| Jul 23, 1:05 PM EDT | Severe Thunderstorm Warning | CTP | Tioga | 55 min |
| Jul 23, 1:33 PM EDT | Severe Thunderstorm Warning | CTP | Bradford | 57 min |
| Jul 23, 1:49 PM EDT | Severe Thunderstorm Warning | CLE | Cameron, Elk | 56 min |
| Jul 23, 2:00 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 60 min |
| Jul 23, 2:08 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 67 min |
| Jul 23, 2:37 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 68 min |
| Jul 23, 3:03 PM EDT | Severe Thunderstorm Warning | BGM | Columbia | 57 min |
| Jul 23, 3:09 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 66 min |
| Jul 23, 3:14 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 46 min |
| Jul 23, 3:32 PM EDT | Severe Thunderstorm Warning | CTP | Carbon | 43 min |
| Jul 23, 3:43 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon, Mifflin | 62 min |
| Jul 23, 3:51 PM EDT | Severe Thunderstorm Warning | CTP | Montour, Northumberland | 54 min |
| Jul 23, 5:04 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 56 min |
| Jul 30, 6:00 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 60 min |
| Jul 30, 6:48 PM EDT | Severe Thunderstorm Warning | PBZ | Cambria, Somerset | 57 min |
| Aug 3, 7:04 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 26 min |
| Aug 3, 7:25 PM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 50 min |
| Aug 9, 6:57 AM EDT | Flash Flood Warning | CTP | Dauphin | 63 min |
| Aug 9, 8:15 AM EDT | Flash Flood Warning | CTP | Dauphin | 45 min |
| Aug 9, 9:15 AM EDT | Flash Flood Warning | CTP | Dauphin | 60 min |
| Aug 9, 10:00 AM EDT | Flash Flood Warning | CTP | Dauphin | 60 min |
| Aug 15, 5:13 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 47 min |
| Aug 15, 5:40 PM EDT | Severe Thunderstorm Warning | CTP | Montour, Northumberland | 20 min |
| Aug 15, 5:40 PM EDT | Severe Thunderstorm Warning | CTP | Butler | 20 min |
| Aug 19, 3:12 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Armstrong, Butler, Washington, Westmoreland | 63 min |
| Aug 19, 3:30 PM EDT | Severe Thunderstorm Warning | PBZ | Cambria, Indiana | 60 min |
| Aug 19, 4:30 PM EDT | Severe Thunderstorm Warning | PBZ | Cambria, Indiana | 60 min |
| Aug 19, 4:30 PM EDT | Severe Thunderstorm Warning | PBZ | Blair | 60 min |
| Aug 19, 4:37 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 68 min |
| Aug 20, 11:01 AM EDT | Flash Flood Warning | CTP | York | 119 min |
| Aug 20, 11:16 AM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 59 min |
| Aug 20, 11:17 AM EDT | Severe Thunderstorm Warning | PHI | Chester | 43 min |
| Aug 20, 5:19 PM EDT | Flash Flood Warning | CLE | Lawrence | 116 min |
| Aug 20, 5:23 PM EDT | Flash Flood Warning | PBZ | Beaver | 3 hr |
| Aug 20, 7:22 PM EDT | Severe Thunderstorm Warning | CTP | Adams, York | 68 min |
| Aug 25, 1:36 AM EDT | Flash Flood Warning | PBZ | Blair | 2 hr |
| Aug 31, 2:50 AM EDT | Severe Thunderstorm Warning | CLE | Erie | 55 min |
| Sep 10, 5:35 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Beaver | 55 min |
| Sep 16, 5:34 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Perry | 56 min |
| Sep 18, 2:50 PM EDT | Severe Thunderstorm Warning | PBZ | Clearfield | 55 min |
| Sep 18, 5:00 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 60 min |
| Sep 18, 6:58 PM EDT | Severe Thunderstorm Warning | CTP | Northumberland, Union | 62 min |
| Sep 18, 7:25 PM EDT | Severe Thunderstorm Warning | CTP | Adams, York | 65 min |
| Sep 18, 8:28 PM EDT | Severe Thunderstorm Warning | CTP | York | 62 min |
| Sep 19, 12:14 AM EDT | Flash Flood Warning | CTP | Adams | 31 min |
| Sep 19, 12:14 AM EDT | Severe Thunderstorm Warning | CTP | Adams | 31 min |
| Dec 3, 12:28 AM EST | Flash Flood Warning | PBZ | Greene, Washington | 4 hr |
| Dec 3, 1:26 AM EST | Flash Flood Warning | PBZ | Cambria, Westmoreland | 3 hr |
| Dec 3, 1:26 AM EST | Flash Flood Warning | PBZ | Fayette | 3 hr |
| Dec 3, 7:46 AM EST | Flash Flood Warning | PBZ | Greene, Washington | 2 hr |
| Dec 14, 4:07 PM EST | Severe Thunderstorm Warning | CTP | Lycoming | 38 min |
| Dec 14, 5:00 PM EST | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne, Wyoming | 60 min |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 206 |
| Tornado Warning | 6 |
| Flooding | |
| Flash Flood Warning | 31 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Washington County16
- Lawrence County15
- Butler County15
- Erie County14
- Crawford County13
- Cambria County12
- Allegheny County11
- Beaver County10
- Westmoreland County10
- Clearfield County10
- York County10
- Fayette County9
- Indiana County9
- Blair County9
- Jefferson County9
- Armstrong County8
- Clarion County8
- Mercer County7
- Greene County7
- Dauphin County7
- Adams County7
- Philadelphia County7
- McKean County6
- Somerset County6
- Huntingdon County6
- Chester County6
- Bedford County5
- Clinton County5
- Centre County5
- Montgomery County5
- Lycoming County5
- Perry County4
- Northumberland County4
- Berks County4
- Delaware County4
- Bucks County4
- Venango County4
- Lancaster County3
- Lebanon County3
- Elk County3
24 more counties
- Montour County3
- Warren County3
- Forest County3
- Mifflin County3
- Potter County2
- Cumberland County2
- Susquehanna County2
- Wayne County2
- Juniata County2
- Schuylkill County2
- Cameron County2
- Union County2
- Lehigh County2
- Franklin County1
- Fulton County1
- Snyder County1
- Northampton County1
- Tioga County1
- Bradford County1
- Columbia County1
- Carbon County1
- Lackawanna County1
- Luzerne County1
- Wyoming County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive19901992
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. Rebuilt daily.