Alert archive / Pennsylvania / Flash Flood Warnings
Flash Flood Warnings in Pennsylvania, 2003
255 flash flood warnings in 2003. 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 flash flood warnings reaches back to 1986.
Flash Flood Warnings by county
Each county as a circle sized by its count in 2003. Tap one for its archive.
- Flash Flood Warnings
- 255
- Busiest month
- August93 flash flood warnings
- Busiest day
- August 9, 200319 flash flood 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 |
|---|---|---|---|---|
| Feb 22, 1:59 PM EST | Flash Flood Warning | PHI | Delaware | 4 hr |
| Feb 23, 1:37 AM EST | Flash Flood Warning | PBZ | Fayette | 3 hr |
| Feb 23, 3:41 AM EST | Flash Flood Warning | PBZ | Greene | 3 hr |
| Feb 23, 4:06 AM EST | Flash Flood Warning | PBZ | Washington | 6 hr |
| Feb 23, 12:01 PM EST | Flash Flood Warning | PBZ | Washington | 6 hr |
| Feb 23, 1:19 PM EST | Flash Flood Warning | PBZ | Greene | 5 hr |
| Feb 23, 6:01 PM EST | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Mar 9, 5:29 PM EST | Flash Flood Warning | CTP | Lancaster | 3 hr |
| Mar 18, 10:40 AM EST | Flash Flood Warning | CLE | Crawford, Erie | 2 min |
| Mar 20, 10:40 AM EST | Flash Flood Warning | CTP | Cambria, Somerset | 15 min |
| May 1, 9:05 PM EDT | Flash Flood Warning | BGM | Bradford | 3 hr |
| May 1, 9:20 PM EDT | Flash Flood Warning | BGM | Susquehanna | 3 hr |
| May 9, 11:04 AM EDT | Flash Flood Warning | PBZ | Greene | 3 hr |
| May 10, 7:28 AM EDT | Flash Flood Warning | PBZ | Greene | 4 hr |
| May 10, 7:37 AM EDT | Flash Flood Warning | PBZ | Fayette | 4 hr |
| May 10, 7:43 AM EDT | Flash Flood Warning | PBZ | Beaver | 4 hr |
| May 10, 7:47 AM EDT | Flash Flood Warning | PBZ | Washington | 4 hr |
| May 10, 8:06 AM EDT | Flash Flood Warning | PBZ | Allegheny, Westmoreland | 3 hr |
| May 10, 9:18 AM EDT | Flash Flood Warning | CTP | Somerset | 3 hr |
| May 10, 8:05 PM EDT | Flash Flood Warning | PBZ | Washington | 115 min |
| Jun 1, 1:50 AM EDT | Flash Flood Warning | CTP | Schuylkill | 3 hr |
| Jun 12, 2:16 AM EDT | Flash Flood Warning | PHI | Carbon | 119 min |
| Jun 12, 2:37 AM EDT | Flash Flood Warning | PHI | Monroe | 3 hr |
| Jun 12, 6:17 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Jun 12, 6:38 PM EDT | Flash Flood Warning | PBZ | Armstrong | 3 hr |
| Jun 12, 8:11 PM EDT | Flash Flood Warning | PBZ | Venango | 3 hr |
| Jun 12, 8:18 PM EDT | Flash Flood Warning | PBZ | Forest | 3 hr |
| Jun 12, 8:25 PM EDT | Flash Flood Warning | PHI | Berks | 80 min |
| Jun 12, 8:47 PM EDT | Flash Flood Warning | PBZ | Indiana | 3 hr |
| Jun 12, 9:15 PM EDT | Flash Flood Warning | PHI | Carbon, Monroe | 90 min |
| Jun 12, 10:18 PM EDT | Flash Flood Warning | PBZ | Butler | 3 hr |
| Jun 12, 10:40 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Jun 12, 10:44 PM EDT | Flash Flood Warning | PBZ | Venango | 3 hr |
| Jun 12, 11:13 PM EDT | Flash Flood Warning | PBZ | Clarion | 3 hr |
| Jun 12, 11:24 PM EDT | Flash Flood Warning | PBZ | Armstrong | 4 hr |
| Jun 13, 1:24 AM EDT | Flash Flood Warning | PBZ | Forest | 4 hr |
| Jun 13, 6:59 PM EDT | Flash Flood Warning | CTP | York | 3 hr |
| Jun 13, 10:00 PM EDT | Flash Flood Warning | CTP | York | 2 hr |
| Jun 13, 10:21 PM EDT | Flash Flood Warning | PBZ | Lawrence | 3 hr |
| Jun 13, 10:30 PM EDT | Flash Flood Warning | PBZ | Butler | 3 hr |
| Jun 13, 10:58 PM EDT | Flash Flood Warning | PBZ | Armstrong | 3 hr |
| Jun 14, 1:15 AM EDT | Flash Flood Warning | PBZ | Lawrence | 3 hr |
| Jun 20, 5:10 PM EDT | Flash Flood Warning | PBZ | Washington | 3 hr |
| Jun 20, 6:58 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Jun 21, 3:40 PM EDT | Flash Flood Warning | CTP | Adams, Cumberland | 3 hr |
| Jun 21, 3:54 PM EDT | Flash Flood Warning | BGM | Bradford, Susquehanna | 3 hr |
| Jun 21, 4:15 PM EDT | Flash Flood Warning | CTP | Franklin | 3 hr |
| Jun 21, 6:11 PM EDT | Flash Flood Warning | BGM | Pike | 3 hr |
| Jun 21, 6:54 PM EDT | Flash Flood Warning | BGM | Bradford, Susquehanna | 3 hr |
| Jun 21, 9:10 PM EDT | Flash Flood Warning | BGM | Pike | 3 hr |
| Jul 4, 3:33 PM EDT | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Jul 4, 4:10 PM EDT | Flash Flood Warning | PBZ | Lawrence | 3 hr |
| Jul 4, 4:32 PM EDT | Flash Flood Warning | PBZ | Butler | 3 hr |
| Jul 4, 6:07 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Jul 4, 7:12 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Jul 4, 7:19 PM EDT | Flash Flood Warning | PBZ | Fayette | 3 hr |
| Jul 6, 3:35 PM EDT | Flash Flood Warning | PBZ | Lawrence, Mercer | 3 hr |
| Jul 6, 3:54 PM EDT | Flash Flood Warning | PBZ | Butler | 3 hr |
| Jul 6, 4:17 PM EDT | Flash Flood Warning | CTP | Fulton | 88 min |
| Jul 6, 4:56 PM EDT | Flash Flood Warning | PBZ | Indiana | 3 hr |
| Jul 8, 3:03 AM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Jul 8, 6:43 AM EDT | Flash Flood Warning | PBZ | Greene | 3 hr |
| Jul 8, 7:13 AM EDT | Flash Flood Warning | PBZ | Fayette | 3 hr |
| Jul 8, 7:55 AM EDT | Flash Flood Warning | PBZ | Beaver | 3 hr |
| Jul 8, 8:14 PM EDT | Flash Flood Warning | PBZ | Beaver | 3 hr |
| Jul 8, 8:18 PM EDT | Flash Flood Warning | PBZ | Washington | 3 hr |
| Jul 8, 8:51 PM EDT | Flash Flood Warning | PBZ | Greene | 3 hr |
| Jul 10, 6:48 PM EDT | Flash Flood Warning | PBZ | Fayette | 3 hr |
| Jul 10, 7:04 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Jul 10, 7:07 PM EDT | Flash Flood Warning | PBZ | Washington | 3 hr |
| Jul 10, 8:30 PM EDT | Flash Flood Warning | CTP | Cambria | 3 hr |
| Jul 14, 3:30 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Jul 18, 6:18 AM EDT | Flash Flood Warning | CTP | McKean, Potter | 3 hr |
| Jul 18, 3:55 PM EDT | Flash Flood Warning | PBZ | Jefferson | 2 hr |
| Jul 21, 5:29 AM EDT | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Jul 21, 1:33 PM EDT | Flash Flood Warning | CLE | Crawford | 3 hr |
| Jul 21, 1:47 PM EDT | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Jul 21, 1:56 PM EDT | Flash Flood Warning | PBZ | Venango | 3 hr |
| Jul 21, 2:32 PM EDT | Flash Flood Warning | PBZ | Clarion, Forest | 3 hr |
| Jul 21, 4:38 PM EDT | Flash Flood Warning | CLE | Crawford | 4 hr |
| Jul 21, 7:30 PM EDT | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Jul 21, 8:33 PM EDT | Flash Flood Warning | PBZ | Venango | 3 hr |
| Jul 21, 8:46 PM EDT | Flash Flood Warning | CLE | Crawford | 6 hr |
| Jul 21, 8:55 PM EDT | Flash Flood Warning | CTP | Warren | 6 hr |
| Jul 21, 9:58 PM EDT | Flash Flood Warning | CTP | McKean | 6 hr |
| Jul 21, 10:03 PM EDT | Flash Flood Warning | PBZ | Forest | 3 hr |
| Jul 21, 10:27 PM EDT | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Jul 22, 12:06 PM EDT | Flash Flood Warning | PBZ | Mercer, Venango | 3 hr |
| Jul 22, 12:08 PM EDT | Flash Flood Warning | CLE | Crawford | 4 hr |
| Jul 22, 12:58 PM EDT | Flash Flood Warning | PBZ | Lawrence | 3 hr |
| Jul 22, 2:07 PM EDT | Flash Flood Warning | CLE | Erie | 4 hr |
| Jul 22, 2:16 PM EDT | Flash Flood Warning | PBZ | Forest | 3 hr |
| Jul 22, 2:56 PM EDT | Flash Flood Warning | PBZ | Mercer, Venango | 3 hr |
| Jul 22, 3:33 PM EDT | Flash Flood Warning | CLE | Crawford | 4 hr |
| Jul 22, 3:52 PM EDT | Flash Flood Warning | PBZ | Clarion | 3 hr |
| Jul 22, 3:57 PM EDT | Flash Flood Warning | PBZ | Jefferson | 3 hr |
| Jul 22, 5:15 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Jul 22, 6:30 PM EDT | Flash Flood Warning | PHI | Berks, Lehigh | 4 hr |
| Jul 22, 8:00 PM EDT | Flash Flood Warning | PHI | Bucks, Montgomery, Northampton | 4 hr |
| Jul 22, 9:55 PM EDT | Flash Flood Warning | PBZ | Lawrence, Mercer | 3 hr |
| Jul 23, 8:07 AM EDT | Flash Flood Warning | PBZ | Allegheny, Westmoreland | 3 hr |
| Jul 23, 3:59 PM EDT | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Jul 23, 4:09 PM EDT | Flash Flood Warning | PBZ | Venango | 3 hr |
| Jul 23, 6:25 PM EDT | Flash Flood Warning | PBZ | Clarion | 3 hr |
| Jul 23, 6:34 PM EDT | Flash Flood Warning | PBZ | Forest | 3 hr |
| Jul 23, 7:23 PM EDT | Flash Flood Warning | PBZ | Armstrong | 3 hr |
| Jul 24, 6:34 AM EDT | Flash Flood Warning | PBZ | Mercer | 4 hr |
| Jul 27, 6:42 PM EDT | Flash Flood Warning | PBZ | Lawrence, Mercer | 2 hr |
| Jul 27, 7:26 PM EDT | Flash Flood Warning | PBZ | Butler | 3 hr |
| Jul 27, 7:35 PM EDT | Flash Flood Warning | PBZ | Clarion, Jefferson | 3 hr |
| Jul 27, 8:37 PM EDT | Flash Flood Warning | CTP | Clearfield | 3 hr |
| Jul 31, 6:23 PM EDT | Flash Flood Warning | CLE | Erie | 3 hr |
| Jul 31, 6:33 PM EDT | Flash Flood Warning | PBZ | Fayette | 3 hr |
| Aug 2, 11:22 PM EDT | Flash Flood Warning | CTP | Bedford | 4 hr |
| Aug 3, 4:00 AM EDT | Flash Flood Warning | PBZ | Butler | 3 hr |
| Aug 3, 4:07 AM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Aug 3, 3:15 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Aug 4, 12:40 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Aug 4, 12:52 PM EDT | Flash Flood Warning | PBZ | Washington | 3 hr |
| Aug 4, 4:21 PM EDT | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Aug 4, 6:18 PM EDT | Flash Flood Warning | PHI | Northampton | 117 min |
| Aug 5, 1:00 PM EDT | Flash Flood Warning | CLE | Erie | 4 hr |
| Aug 5, 2:32 PM EDT | Flash Flood Warning | PHI | Carbon, Lehigh | 3 hr |
| Aug 5, 6:20 PM EDT | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Aug 5, 7:06 PM EDT | Flash Flood Warning | CLE | Erie | 3 hr |
| Aug 5, 8:37 PM EDT | Flash Flood Warning | PBZ | Venango | 3 hr |
| Aug 6, 1:19 PM EDT | Flash Flood Warning | PHI | Carbon | 3 hr |
| Aug 6, 1:22 PM EDT | Flash Flood Warning | BGM | Luzerne | 53 min |
| Aug 6, 2:10 PM EDT | Flash Flood Warning | BGM | Luzerne | 2 hr |
| Aug 6, 2:50 PM EDT | Flash Flood Warning | BGM | Wayne | 3 hr |
| Aug 6, 8:02 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Aug 6, 9:22 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Aug 7, 2:18 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Aug 7, 7:09 PM EDT | Flash Flood Warning | PBZ | Lawrence | 3 hr |
| Aug 7, 8:06 PM EDT | Flash Flood Warning | PBZ | Clarion | 3 hr |
| Aug 7, 8:59 PM EDT | Flash Flood Warning | PBZ | Forest | 3 hr |
| Aug 7, 9:03 PM EDT | Flash Flood Warning | PBZ | Venango | 3 hr |
| Aug 7, 10:53 PM EDT | Flash Flood Warning | CTP | Potter | 3 hr |
| Aug 8, 3:25 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Aug 8, 3:41 PM EDT | Flash Flood Warning | PBZ | Fayette | 3 hr |
| Aug 8, 9:18 PM EDT | Flash Flood Warning | PBZ | Butler | 3 hr |
| Aug 8, 10:54 PM EDT | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Aug 9, 1:20 PM EDT | Flash Flood Warning | BGM | Bradford | 3 hr |
| Aug 9, 2:58 PM EDT | Flash Flood Warning | PBZ | Fayette | 3 hr |
| Aug 9, 3:31 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Aug 9, 3:47 PM EDT | Flash Flood Warning | CTP | Tioga | 3 hr |
| Aug 9, 5:21 PM EDT | Flash Flood Warning | CLE | Crawford | 3 hr |
| Aug 9, 5:38 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Aug 9, 5:46 PM EDT | Flash Flood Warning | PHI | Chester, Montgomery | 3 hr |
| Aug 9, 5:53 PM EDT | Flash Flood Warning | PBZ | Venango | 3 hr |
| Aug 9, 6:00 PM EDT | Flash Flood Warning | PHI | Bucks | 3 hr |
| Aug 9, 6:14 PM EDT | Flash Flood Warning | PBZ | Lawrence | 3 hr |
| Aug 9, 6:26 PM EDT | Flash Flood Warning | PBZ | Indiana | 3 hr |
| Aug 9, 6:32 PM EDT | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Aug 9, 7:06 PM EDT | Flash Flood Warning | CTP | Tioga | 3 hr |
| Aug 9, 7:21 PM EDT | Flash Flood Warning | CTP | McKean | 3 hr |
| Aug 9, 7:32 PM EDT | Flash Flood Warning | CTP | Blair, Clearfield | 3 hr |
| Aug 9, 7:42 PM EDT | Flash Flood Warning | CTP | Cameron | 3 hr |
| Aug 9, 7:46 PM EDT | Flash Flood Warning | CTP | Centre | 3 hr |
| Aug 9, 8:12 PM EDT | Flash Flood Warning | CTP | Juniata, Perry | 3 hr |
| Aug 9, 8:26 PM EDT | Flash Flood Warning | CTP | Potter | 3 hr |
| Aug 9, 8:30 PM EDT | Flash Flood Warning | PHI | Chester | 2 hr |
| Aug 9, 9:37 PM EDT | Flash Flood Warning | PBZ | Beaver | 3 hr |
| Aug 9, 10:17 PM EDT | Flash Flood Warning | CTP | McKean | 118 min |
| Aug 9, 10:24 PM EDT | Flash Flood Warning | CTP | Tioga | 3 hr |
| Aug 9, 10:33 PM EDT | Flash Flood Warning | PHI | Chester | 3 hr |
| Aug 10, 7:22 AM EDT | Flash Flood Warning | PHI | Chester | 113 min |
| Aug 10, 7:35 AM EDT | Flash Flood Warning | CLE | Crawford | 3 hr |
| Aug 10, 3:37 PM EDT | Flash Flood Warning | CLE | Crawford | 4 hr |
| Aug 10, 3:56 PM EDT | Flash Flood Warning | PBZ | Butler | 3 hr |
| Aug 10, 8:34 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Aug 11, 2:01 AM EDT | Flash Flood Warning | PHI | Montgomery | 3 hr |
| Aug 11, 3:16 AM EDT | Flash Flood Warning | PHI | Bucks, Lehigh | 119 min |
| Aug 11, 12:29 PM EDT | Flash Flood Warning | BGM | Lackawanna | 3 hr |
| Aug 11, 1:00 PM EDT | Flash Flood Warning | CTP | Lebanon | 3 hr |
| Aug 11, 6:07 PM EDT | Flash Flood Warning | PHI | Northampton | 3 hr |
| Aug 12, 5:29 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Aug 12, 7:02 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Aug 12, 10:03 PM EDT | Flash Flood Warning | CTP | McKean | 117 min |
| Aug 13, 3:39 PM EDT | Flash Flood Warning | PHI | Northampton | 3 hr |
| Aug 13, 4:24 PM EDT | Flash Flood Warning | CTP | Schuylkill | 2 hr |
| Aug 13, 5:36 PM EDT | Flash Flood Warning | CTP | Dauphin | 114 min |
| Aug 16, 12:44 PM EDT | Flash Flood Warning | BGM | Lackawanna, Luzerne | 2 hr |
| Aug 16, 2:00 PM EDT | Flash Flood Warning | PHI | Monroe | 3 hr |
| Aug 16, 2:11 PM EDT | Flash Flood Warning | BGM | Pike | 2 hr |
| Aug 16, 2:12 PM EDT | Flash Flood Warning | CTP | Lancaster, York | 3 hr |
| Aug 16, 4:37 PM EDT | Flash Flood Warning | BGM | Luzerne | 3 hr |
| Aug 16, 5:10 PM EDT | Flash Flood Warning | PHI | Monroe | 2 hr |
| Aug 16, 6:31 PM EDT | Flash Flood Warning | PBZ | Venango | 3 hr |
| Aug 16, 8:58 PM EDT | Flash Flood Warning | CTP | Dauphin | 3 hr |
| Aug 26, 12:03 AM EDT | Flash Flood Warning | PBZ | Armstrong | 3 hr |
| Aug 26, 3:10 AM EDT | Flash Flood Warning | PBZ | Armstrong | 3 hr |
| Aug 26, 5:13 AM EDT | Flash Flood Warning | PBZ | Jefferson | 3 hr |
| Aug 26, 9:05 AM EDT | Flash Flood Warning | PBZ | Venango | 3 hr |
| Aug 26, 9:26 AM EDT | Flash Flood Warning | PBZ | Clarion | 3 hr |
| Aug 26, 11:47 AM EDT | Flash Flood Warning | PBZ | Venango | 3 hr |
| Aug 26, 12:44 PM EDT | Flash Flood Warning | PBZ | Butler | 3 hr |
| Aug 26, 1:50 PM EDT | Flash Flood Warning | PBZ | Lawrence | 3 hr |
| Aug 26, 1:54 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Aug 27, 6:58 AM EDT | Flash Flood Warning | PBZ | Fayette, Greene | 4 hr |
| Aug 27, 9:53 AM EDT | Flash Flood Warning | PBZ | Washington | 3 hr |
| Aug 27, 10:04 AM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Aug 27, 4:04 PM EDT | Flash Flood Warning | PBZ | Fayette | 3 hr |
| Aug 27, 4:12 PM EDT | Flash Flood Warning | PBZ | Greene | 3 hr |
| Aug 29, 7:33 PM EDT | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Aug 29, 9:33 PM EDT | Flash Flood Warning | PBZ | Greene | 3 hr |
| Sep 1, 9:40 PM EDT | Flash Flood Warning | CTP | Franklin | 3 hr |
| Sep 1, 10:05 PM EDT | Flash Flood Warning | CTP | Lancaster | 3 hr |
| Sep 1, 11:22 PM EDT | Flash Flood Warning | PBZ | Butler, Lawrence | 3 hr |
| Sep 1, 11:28 PM EDT | Flash Flood Warning | PBZ | Venango | 3 hr |
| Sep 1, 11:45 PM EDT | Flash Flood Warning | PBZ | Clarion, Jefferson | 3 hr |
| Sep 2, 12:04 AM EDT | Flash Flood Warning | PBZ | Fayette | 3 hr |
| Sep 3, 4:37 AM EDT | Flash Flood Warning | PBZ | Lawrence | 3 hr |
| Sep 3, 1:01 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Sep 4, 6:51 PM EDT | Flash Flood Warning | BGM | Bradford | 3 hr |
| Sep 4, 7:47 PM EDT | Flash Flood Warning | BGM | Susquehanna | 3 hr |
| Sep 4, 8:35 PM EDT | Flash Flood Warning | BGM | Lackawanna, Wayne | 3 hr |
| Sep 9, 4:37 PM EDT | Flash Flood Warning | PBZ | Beaver | 3 hr |
| Sep 15, 6:07 AM EDT | Flash Flood Warning | PHI | Chester | 3 hr |
| Sep 15, 8:18 AM EDT | Flash Flood Warning | PHI | Berks, Montgomery | 4 hr |
| Sep 15, 8:47 AM EDT | Flash Flood Warning | PHI | Chester | 6 hr |
| Sep 15, 11:25 AM EDT | Flash Flood Warning | CTP | Lancaster | 3 hr |
| Sep 15, 12:10 PM EDT | Flash Flood Warning | PHI | Berks | 4 hr |
| Sep 15, 1:59 PM EDT | Flash Flood Warning | CTP | Lancaster | 6 hr |
| Sep 15, 3:24 PM EDT | Flash Flood Warning | PHI | Berks, Chester, Montgomery | 6 hr |
| Sep 15, 5:19 PM EDT | Flash Flood Warning | PHI | Chester | 6 hr |
| Sep 15, 6:33 PM EDT | Flash Flood Warning | PHI | Bucks, Lehigh, Northampton | 3 hr |
| Sep 23, 2:35 AM EDT | Flash Flood Warning | CTP | Adams | 3 hr |
| Sep 23, 2:38 AM EDT | Flash Flood Warning | CTP | Snyder | 3 hr |
| Sep 23, 3:20 AM EDT | Flash Flood Warning | CTP | York | 4 hr |
| Sep 23, 3:59 AM EDT | Flash Flood Warning | CTP | Dauphin | 3 hr |
| Sep 23, 4:05 AM EDT | Flash Flood Warning | CTP | Lancaster | 3 hr |
| Sep 23, 5:20 AM EDT | Flash Flood Warning | CTP | Adams, Dauphin, Lancaster, York | 4 hr |
| Sep 27, 5:39 PM EDT | Flash Flood Warning | CTP | Bedford | 3 hr |
| Sep 27, 6:18 PM EDT | Flash Flood Warning | CTP | Blair | 117 min |
| Sep 27, 6:47 PM EDT | Flash Flood Warning | CTP | Centre, Fulton, Huntingdon | 3 hr |
| Sep 27, 8:02 PM EDT | Flash Flood Warning | CTP | Blair | 118 min |
| Sep 28, 1:30 AM EDT | Flash Flood Warning | PHI | Bucks | 4 hr |
| Nov 5, 5:59 PM EST | Flash Flood Warning | PHI | Bucks, Chester, Montgomery | 3 hr |
| Nov 19, 7:25 AM EST | Flash Flood Warning | PBZ | Greene | 6 hr |
| Nov 19, 7:50 AM EST | Flash Flood Warning | PBZ | Allegheny, Beaver, Washington | 6 hr |
| Nov 19, 8:38 AM EST | Flash Flood Warning | PBZ | Fayette, Westmoreland | 6 hr |
| Nov 19, 8:55 AM EST | Flash Flood Warning | PBZ | Armstrong, Butler, Lawrence | 5 hr |
| Nov 19, 9:33 AM EST | Flash Flood Warning | PBZ | Indiana | 5 hr |
| Nov 19, 9:48 AM EST | Flash Flood Warning | PBZ | Clarion, Forest, Jefferson, Venango | 5 hr |
| Nov 19, 10:43 AM EST | Flash Flood Warning | CTP | Cambria, Clearfield, Elk, Somerset | 4 hr |
| Nov 19, 11:31 AM EST | Flash Flood Warning | CTP | Bedford, Blair | 4 hr |
| Nov 19, 11:44 AM EST | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Nov 19, 11:47 AM EST | Flash Flood Warning | CTP | Cameron, McKean, Warren | 4 hr |
| Nov 19, 12:37 PM EST | Flash Flood Warning | CTP | Centre, Fulton, Huntingdon | 4 hr |
| Nov 19, 1:35 PM EST | Flash Flood Warning | CTP | Clinton, Lycoming, Potter, Tioga | 4 hr |
| Dec 10, 9:47 PM EST | Flash Flood Warning | PBZ | Allegheny, Butler | 3 hr |
| Dec 10, 10:25 PM EST | Flash Flood Warning | PBZ | Washington | 3 hr |
| Dec 11, 10:30 AM EST | Flash Flood Warning | BGM | Susquehanna | 3 hr |
| Dec 11, 10:34 AM EST | Flash Flood Warning | BGM | Wyoming | 3 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Mercer County18
- Allegheny County17
- Westmoreland County15
- Venango County15
- Lawrence County13
- Fayette County12
- Butler County12
- Washington County11
- Greene County10
- Crawford County9
- Clarion County9
- Chester County9
- Forest County8
- Lancaster County7
- Armstrong County7
- Beaver County6
- McKean County6
- Jefferson County6
- Bucks County6
- Montgomery County6
- Erie County5
- Bradford County5
- Susquehanna County5
- Berks County5
- York County5
- Northampton County5
- Carbon County4
- Monroe County4
- Indiana County4
- Potter County4
- Lehigh County4
- Luzerne County4
- Tioga County4
- Blair County4
- Dauphin County4
- Cambria County3
- Somerset County3
- Adams County3
- Pike County3
- Fulton County3
20 more counties
- Clearfield County3
- Bedford County3
- Centre County3
- Lackawanna County3
- Schuylkill County2
- Franklin County2
- Warren County2
- Wayne County2
- Cameron County2
- Huntingdon County2
- Delaware County1
- Cumberland County1
- Juniata County1
- Perry County1
- Lebanon County1
- Snyder County1
- Elk County1
- Clinton County1
- Lycoming County1
- Wyoming County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20022004
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.