Weather alerts in Pennsylvania, 1997
467 weather alerts in 1997, 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 1997. Tap one for its archive.
- Alerts
- 467
- Warnings
- 439
- Watches
- 28
- Advisories
- 0
- Busiest month
- May125 alerts
- Busiest day
- August 16, 199758 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 |
|---|---|---|---|---|
| Jan 23, 12:05 PM EST | Flash Flood Warning | CLE | Crawford | 4 hr |
| Jan 25, 1:26 AM EST | Flash Flood Warning | CTP | Lancaster | 6 hr |
| Jan 25, 7:25 AM EST | Flash Flood Warning | CTP | Lancaster | 5 hr |
| Jan 25, 10:50 AM EST | Flash Flood Warning | PHI | Delaware | 3 hr |
| Jan 26, 2:26 AM EST | Flash Flood Warning | CTP | Warren | 7 hr |
| Feb 5, 1:51 AM EST | Flash Flood Warning | PBZ | Armstrong, Clarion | 6 hr |
| Feb 5, 8:10 PM EST | Flash Flood Warning | CTP | Clearfield | 4 hr |
| Feb 22, 3:12 AM EST | Severe Thunderstorm Warning | CLE | Erie | 48 min |
| Feb 22, 12:31 PM EST | Severe Thunderstorm Warning | PHI | Bucks, Delaware, Montgomery, Philadelphia | 64 min |
| Mar 2, 2:47 AM EST | Flash Flood Warning | PBZ | Fayette, Greene | 6 hr |
| Mar 2, 5:53 AM EST | Flash Flood Warning | PBZ | Fayette | 4 hr |
| Mar 2, 5:53 AM EST | Flash Flood Warning | PBZ | Greene | 4 hr |
| Mar 2, 6:18 AM EST | Flash Flood Warning | CTP | Somerset | 6 hr |
| Mar 2, 10:00 AM EST | Flash Flood Warning | PBZ | Greene | 5 hr |
| Mar 29, 9:47 AM EST | Severe Thunderstorm Warning | CTP | Bedford, Huntingdon | 43 min |
| Mar 29, 12:15 PM EST | Severe Thunderstorm Watch | SPC | Adams, Berks, Bucks, Chester, Cumberland, Dauphin and 7 more | 6 hr |
| Mar 29, 12:35 PM EST | Severe Thunderstorm Warning | CTP | Adams, York | 55 min |
| Mar 29, 2:19 PM EST | Severe Thunderstorm Warning | CTP | Lancaster | 26 min |
| May 1, 3:31 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin | 29 min |
| May 1, 3:48 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 57 min |
| May 1, 4:00 PM EDT | Severe Thunderstorm Watch | SPC | Berks, Bucks, Carbon, Chester, Delaware, Lackawanna and 11 more | 6 hr |
| May 1, 4:09 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 66 min |
| May 1, 4:16 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 44 min |
| May 1, 4:22 PM EDT | Severe Thunderstorm Warning | CTP | York | 68 min |
| May 1, 4:38 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh | 52 min |
| May 1, 4:38 PM EDT | Severe Thunderstorm Warning | PHI | Carbon | 52 min |
| May 1, 4:41 PM EDT | Tornado Warning | CTP | Schuylkill | 49 min |
| May 1, 5:32 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 28 min |
| May 1, 6:09 PM EDT | Severe Thunderstorm Warning | PHI | Delaware, Philadelphia | 46 min |
| May 1, 6:18 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery | 32 min |
| May 1, 6:30 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 40 min |
| May 3, 1:23 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 67 min |
| May 3, 1:26 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Clinton | 64 min |
| May 3, 1:30 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Armstrong, Bedford, Blair, Bradford, Cambria and 30 more | 7 hr |
| May 3, 1:57 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 63 min |
| May 3, 1:57 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 63 min |
| May 3, 3:15 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 45 min |
| May 3, 3:24 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 51 min |
| May 3, 3:26 PM EDT | Severe Thunderstorm Warning | PBZ | Lawrence | 49 min |
| May 3, 3:29 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 46 min |
| May 3, 3:33 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 57 min |
| May 3, 3:36 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Butler | 54 min |
| May 3, 3:45 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 30 min |
| May 3, 3:46 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Cumberland, York | 59 min |
| May 3, 3:50 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 55 min |
| May 3, 3:58 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Blair, Cambria | 62 min |
| May 3, 4:00 PM EDT | Severe Thunderstorm Warning | CTP | Juniata, Northumberland, Perry, Snyder | 60 min |
| May 3, 4:00 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin | 60 min |
| May 3, 4:07 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Westmoreland | 68 min |
| May 3, 4:19 PM EDT | Severe Thunderstorm Warning | CTP | Columbia | 56 min |
| May 3, 4:24 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Clinton, Huntingdon | 66 min |
| May 3, 4:30 PM EDT | Severe Thunderstorm Watch | SPC | Berks, Bucks, Carbon, Chester, Delaware, Lackawanna and 14 more | 6 hr |
| May 3, 4:34 PM EDT | Severe Thunderstorm Warning | CTP | Potter, Tioga | 56 min |
| May 3, 4:37 PM EDT | Severe Thunderstorm Warning | PBZ | Venango | 53 min |
| May 3, 4:41 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 64 min |
| May 3, 4:50 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 50 min |
| May 3, 4:54 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 66 min |
| May 3, 5:15 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 60 min |
| May 3, 6:22 PM EDT | Severe Thunderstorm Warning | CTP | York | 68 min |
| May 5, 7:42 AM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 63 min |
| May 6, 12:20 AM EDT | Severe Thunderstorm Warning | CLE | Crawford | 40 min |
| May 6, 2:36 AM EDT | Severe Thunderstorm Warning | CLE | Erie | 69 min |
| May 6, 9:30 AM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Berks, Blair, Bradford, Carbon and 28 more | 6 hr |
| May 6, 9:55 AM EDT | Severe Thunderstorm Warning | CTP | Columbia | 50 min |
| May 6, 9:59 AM EDT | Severe Thunderstorm Warning | CTP | Snyder | 31 min |
| May 6, 10:08 AM EDT | Severe Thunderstorm Warning | CTP | Montour, Northumberland | 52 min |
| May 6, 10:08 AM EDT | Severe Thunderstorm Warning | CTP | Sullivan | 52 min |
| May 6, 10:16 AM EDT | Severe Thunderstorm Warning | BGM | Luzerne, Wyoming | 59 min |
| May 6, 10:18 AM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Schuylkill | 57 min |
| May 6, 10:28 AM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Perry | 62 min |
| May 6, 11:07 AM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 63 min |
| May 6, 11:11 AM EDT | Severe Thunderstorm Warning | BGM | Wayne | 64 min |
| May 6, 11:23 AM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 67 min |
| May 6, 11:28 AM EDT | Severe Thunderstorm Warning | BGM | Pike | 62 min |
| May 6, 11:45 AM EDT | Severe Thunderstorm Watch | SPC | Bucks, Chester, Delaware, Montgomery, Northampton, Philadelphia | 5 hr |
| May 6, 12:44 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 31 min |
| May 15, 12:12 AM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 63 min |
| May 15, 12:51 AM EDT | Severe Thunderstorm Warning | CTP | Somerset | 69 min |
| May 18, 3:45 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Crawford, Erie and 5 more | 6 hr |
| May 18, 5:19 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 41 min |
| May 18, 8:33 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Washington | 27 min |
| May 18, 9:19 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Greene | 41 min |
| May 18, 9:30 PM EDT | Severe Thunderstorm Warning | CTP | Somerset | 60 min |
| May 18, 11:26 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 64 min |
| May 19, 12:03 AM EDT | Severe Thunderstorm Warning | CLE | Crawford | 57 min |
| May 19, 12:06 AM EDT | Severe Thunderstorm Warning | PBZ | Venango | 69 min |
| May 19, 12:36 AM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 69 min |
| May 19, 4:28 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 47 min |
| May 19, 4:30 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 45 min |
| May 19, 4:34 PM EDT | Flash Flood Warning | CLE | Crawford, Erie | 56 min |
| May 19, 4:36 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 69 min |
| May 19, 5:15 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Bedford, Blair, Bradford and 32 more | 6 hr |
| May 19, 5:19 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 26 min |
| May 19, 5:20 PM EDT | Severe Thunderstorm Warning | CTP | McKean | 55 min |
| May 19, 5:24 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 51 min |
| May 19, 5:56 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 49 min |
| May 19, 6:19 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Indiana | 41 min |
| May 19, 6:21 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 54 min |
| May 19, 6:23 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield, Elk | 67 min |
| May 19, 6:31 PM EDT | Severe Thunderstorm Warning | CTP | Cameron | 29 min |
| May 19, 6:34 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 56 min |
| May 19, 6:37 PM EDT | Flash Flood Warning | PBZ | Allegheny | 53 min |
| May 19, 6:37 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 53 min |
| May 19, 6:40 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 65 min |
| May 19, 6:40 PM EDT | Flash Flood Warning | PBZ | Washington | 3 hr |
| May 19, 6:46 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| May 19, 6:46 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 3 hr |
| May 19, 6:47 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 58 min |
| May 19, 6:57 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 33 min |
| May 19, 7:04 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 56 min |
| May 19, 7:07 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 68 min |
| May 19, 7:29 PM EDT | Severe Thunderstorm Warning | CTP | Blair | 61 min |
| May 19, 7:36 PM EDT | Flash Flood Warning | PBZ | Allegheny | 2 hr |
| May 19, 7:41 PM EDT | Severe Thunderstorm Warning | CTP | Sullivan | 64 min |
| May 19, 7:41 PM EDT | Severe Thunderstorm Warning | CTP | Montour, Northumberland, Union | 64 min |
| May 19, 7:46 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon, Mifflin | 59 min |
| May 19, 7:50 PM EDT | Severe Thunderstorm Warning | CTP | Juniata, Snyder | 55 min |
| May 19, 7:56 PM EDT | Severe Thunderstorm Warning | CTP | Columbia | 64 min |
| May 19, 8:00 PM EDT | Severe Thunderstorm Warning | CTP | Northumberland | 45 min |
| May 19, 8:00 PM EDT | Severe Thunderstorm Watch | SPC | Berks, Carbon, Columbia, Dauphin, Lackawanna, Lebanon and 11 more | 4 hr |
| May 19, 8:08 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 52 min |
| May 19, 8:29 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Schuylkill | 61 min |
| May 19, 8:29 PM EDT | Severe Thunderstorm Warning | CTP | Perry | 61 min |
| May 19, 8:32 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 48 min |
| May 19, 8:34 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Wayne | 56 min |
| May 19, 8:44 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Franklin | 61 min |
| May 19, 8:50 PM EDT | Severe Thunderstorm Warning | CTP | Lebanon | 55 min |
| May 19, 9:08 PM EDT | Severe Thunderstorm Warning | BGM | Pike | 67 min |
| May 19, 9:45 PM EDT | Severe Thunderstorm Watch | SPC | Bucks | 3 hr |
| May 25, 10:43 AM EDT | Flash Flood Warning | PBZ | Allegheny, Westmoreland | 3 hr |
| May 25, 11:00 AM EDT | Flash Flood Warning | PBZ | Beaver, Butler | 5 hr |
| May 25, 12:05 PM EDT | Flash Flood Warning | PBZ | Washington | 4 hr |
| May 25, 12:33 PM EDT | Flash Flood Warning | PBZ | Armstrong, Indiana | 3 hr |
| May 25, 2:00 PM EDT | Flash Flood Warning | PBZ | Allegheny, Westmoreland | 6 hr |
| May 25, 2:28 PM EDT | Flash Flood Warning | CTP | Bedford, Blair, Cambria, Somerset | 7 hr |
| May 25, 3:40 PM EDT | Flash Flood Warning | PBZ | Armstrong, Butler, Indiana | 4 hr |
| May 25, 3:40 PM EDT | Flash Flood Warning | PBZ | Beaver, Washington | 4 hr |
| May 25, 5:16 PM EDT | Flash Flood Warning | PBZ | Fayette | 3 hr |
| May 25, 7:55 PM EDT | Flash Flood Warning | PBZ | Allegheny, Armstrong, Beaver, Butler, Westmoreland | 8 hr |
| May 25, 7:55 PM EDT | Flash Flood Warning | PBZ | Washington | 8 hr |
| May 25, 7:55 PM EDT | Flash Flood Warning | PBZ | Indiana | 8 hr |
| May 25, 7:55 PM EDT | Flash Flood Warning | PBZ | Fayette | 8 hr |
| May 25, 9:28 PM EDT | Flash Flood Warning | CTP | Bedford | 4 hr |
| Jun 2, 4:14 AM EDT | Flash Flood Warning | CTP | Bedford, Blair, Cambria | 5 hr |
| Jun 2, 4:14 AM EDT | Flash Flood Warning | CTP | Somerset | 5 hr |
| Jun 2, 10:23 AM EDT | Flash Flood Warning | CLE | Crawford | 2 hr |
| Jun 2, 12:28 PM EDT | Flash Flood Warning | CLE | Crawford | 2 hr |
| Jun 2, 2:27 PM EDT | Flash Flood Warning | CLE | Crawford | 2 hr |
| Jun 12, 3:37 PM EDT | Flash Flood Warning | PBZ | Mercer | 2 hr |
| Jun 12, 4:06 PM EDT | Flash Flood Warning | PBZ | Venango | 2 hr |
| Jun 12, 6:56 PM EDT | Severe Thunderstorm Warning | CTP | Sullivan | 29 min |
| Jun 12, 10:11 PM EDT | Severe Thunderstorm Warning | CTP | Juniata, Mifflin | 49 min |
| Jun 13, 5:03 AM EDT | Flash Flood Warning | PBZ | Allegheny, Westmoreland | 4 hr |
| Jun 13, 2:08 PM EDT | Flash Flood Warning | PHI | Bucks | 2 hr |
| Jun 18, 2:07 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield, Elk | 68 min |
| Jun 18, 2:30 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Bedford, Blair, Butler and 21 more | 6 hr |
| Jun 18, 2:40 PM EDT | Severe Thunderstorm Warning | CTP | Cameron | 65 min |
| Jun 18, 3:07 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Clinton | 68 min |
| Jun 18, 3:17 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Jun 18, 3:27 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 48 min |
| Jun 18, 3:51 PM EDT | Flash Flood Warning | PBZ | Indiana | 3 hr |
| Jun 18, 3:58 PM EDT | Severe Thunderstorm Warning | CTP | Bedford | 62 min |
| Jun 18, 4:21 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 69 min |
| Jun 18, 4:30 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Jun 18, 5:01 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Fulton | 59 min |
| Jun 18, 5:09 PM EDT | Flash Flood Warning | CTP | Centre, Clearfield | 3 hr |
| Jun 18, 5:14 PM EDT | Severe Thunderstorm Warning | CTP | McKean, Potter | 61 min |
| Jun 18, 5:30 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Carbon, Columbia, Cumberland, Dauphin and 18 more | 6 hr |
| Jun 18, 5:38 PM EDT | Tornado Warning | CTP | Franklin | 67 min |
| Jun 18, 5:48 PM EDT | Severe Thunderstorm Warning | CTP | Blair, Huntingdon | 57 min |
| Jun 18, 6:18 PM EDT | Tornado Warning | CTP | Juniata | 42 min |
| Jun 18, 7:24 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 51 min |
| Jun 18, 7:41 PM EDT | Flash Flood Warning | CTP | Franklin | 3 hr |
| Jun 18, 8:38 PM EDT | Flash Flood Warning | CTP | Lancaster | 3 hr |
| Jun 18, 8:47 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 58 min |
| Jun 18, 9:20 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 45 min |
| Jun 18, 9:26 PM EDT | Flash Flood Warning | PHI | Berks | 3 hr |
| Jun 22, 2:00 PM EDT | Severe Thunderstorm Watch | SPC | Carbon, Lehigh, Monroe, Northampton, Pike, Schuylkill and 1 more | 5 hr |
| Jun 22, 2:09 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne | 66 min |
| Jun 24, 2:57 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 63 min |
| Jun 24, 3:57 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 63 min |
| Jun 24, 4:38 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 32 min |
| Jun 24, 4:43 PM EDT | Severe Thunderstorm Warning | CTP | Union | 62 min |
| Jun 25, 5:57 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 33 min |
| Jun 25, 6:30 PM EDT | Severe Thunderstorm Watch | SPC | Bradford, Crawford, Erie, Lackawanna, McKean, Potter and 5 more | 6 hr |
| Jun 25, 6:38 PM EDT | Severe Thunderstorm Warning | CTP | McKean | 67 min |
| Jun 25, 7:10 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 20 min |
| Jun 25, 7:38 PM EDT | Flash Flood Warning | CTP | Warren | 4 hr |
| Jun 25, 7:45 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 60 min |
| Jun 25, 7:56 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 64 min |
| Jun 25, 8:12 PM EDT | Severe Thunderstorm Warning | CTP | McKean | 63 min |
| Jun 25, 8:31 PM EDT | Severe Thunderstorm Warning | PBZ | Forest | 59 min |
| Jun 25, 8:33 PM EDT | Flash Flood Warning | CLE | Crawford | 117 min |
| Jun 25, 8:44 PM EDT | Tornado Warning | CTP | McKean | 31 min |
| Jun 25, 8:56 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 64 min |
| Jun 25, 9:02 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Elk | 58 min |
| Jun 25, 9:11 PM EDT | Severe Thunderstorm Warning | CTP | Potter, Tioga | 64 min |
| Jun 25, 9:20 PM EDT | Severe Thunderstorm Warning | PBZ | Venango | 55 min |
| Jun 25, 9:32 PM EDT | Flash Flood Warning | PBZ | Mercer, Venango | 118 min |
| Jun 25, 9:32 PM EDT | Flash Flood Warning | PBZ | Forest | 118 min |
| Jun 26, 4:13 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 47 min |
| Jun 30, 10:21 AM EDT | Flash Flood Warning | PBZ | Mercer | 2 hr |
| Jul 1, 7:29 PM EDT | Flash Flood Warning | PBZ | Allegheny, Westmoreland | 3 hr |
| Jul 1, 9:24 PM EDT | Flash Flood Warning | PBZ | Fayette | 3 hr |
| Jul 1, 10:26 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Jul 2, 1:36 AM EDT | Flash Flood Warning | CTP | Franklin, Fulton | 4 hr |
| Jul 2, 8:00 PM EDT | Severe Thunderstorm Watch | SPC | Fayette, Greene, Somerset | 6 hr |
| Jul 2, 9:00 PM EDT | Severe Thunderstorm Watch | SPC | Cameron, Crawford, Elk, Erie, Forest, McKean and 3 more | 5 hr |
| Jul 2, 9:43 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 62 min |
| Jul 2, 10:08 PM EDT | Tornado Warning | CLE | Erie | 52 min |
| Jul 3, 4:00 PM EDT | Tornado Watch | SPC | Bucks, Carbon, Lackawanna, Lehigh, Monroe, Montgomery and 4 more | 6 hr |
| Jul 7, 1:14 PM EDT | Severe Thunderstorm Warning | CTP | McKean | 61 min |
| Jul 7, 1:35 PM EDT | Severe Thunderstorm Warning | CTP | Potter | 65 min |
| Jul 7, 2:12 PM EDT | Severe Thunderstorm Warning | CTP | Tioga | 48 min |
| Jul 7, 2:20 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 55 min |
| Jul 7, 3:10 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 65 min |
| Jul 7, 3:37 PM EDT | Severe Thunderstorm Warning | CTP | Tioga | 63 min |
| Jul 7, 4:12 PM EDT | Severe Thunderstorm Warning | CTP | Sullivan | 63 min |
| Jul 7, 5:09 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 61 min |
| Jul 8, 2:30 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 35 min |
| Jul 8, 3:34 PM EDT | Severe Thunderstorm Warning | CTP | McKean | 76 min |
| Jul 8, 5:41 PM EDT | Tornado Warning | CTP | Tioga | 64 min |
| Jul 8, 6:33 PM EDT | Tornado Warning | BGM | Bradford | 57 min |
| Jul 8, 6:40 PM EDT | Tornado Warning | BGM | Bradford | 50 min |
| Jul 8, 6:47 PM EDT | Tornado Warning | CTP | Tioga | 43 min |
| Jul 8, 7:23 PM EDT | Tornado Warning | BGM | Bradford | 67 min |
| Jul 8, 7:52 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 68 min |
| Jul 9, 1:10 PM EDT | Severe Thunderstorm Warning | CTP | Bedford | 65 min |
| Jul 9, 1:15 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bucks, Carbon, Chester, Cumberland and 16 more | 7 hr |
| Jul 9, 1:42 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 63 min |
| Jul 9, 2:26 PM EDT | Severe Thunderstorm Warning | BGM | Pike | 64 min |
| Jul 9, 2:50 PM EDT | Severe Thunderstorm Warning | CTP | Fulton | 55 min |
| Jul 9, 3:53 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 62 min |
| Jul 9, 4:26 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 64 min |
| Jul 9, 4:30 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 60 min |
| Jul 9, 4:35 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 55 min |
| Jul 9, 4:39 PM EDT | Severe Thunderstorm Warning | CTP | York | 66 min |
| Jul 9, 4:49 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh | 66 min |
| Jul 9, 4:53 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 32 min |
| Jul 9, 5:00 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Northampton | 65 min |
| Jul 9, 5:00 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery | 65 min |
| Jul 9, 5:14 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 66 min |
| Jul 9, 6:00 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 65 min |
| Jul 9, 6:16 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 64 min |
| Jul 15, 2:55 PM EDT | Severe Thunderstorm Warning | CTP | McKean, Warren | 60 min |
| Jul 15, 3:20 PM EDT | Severe Thunderstorm Warning | CTP | Elk, Warren | 60 min |
| Jul 15, 3:53 PM EDT | Severe Thunderstorm Warning | CTP | McKean | 62 min |
| Jul 15, 4:16 PM EDT | Severe Thunderstorm Warning | CTP | Elk | 64 min |
| Jul 15, 4:36 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 69 min |
| Jul 15, 5:13 PM EDT | Flash Flood Warning | CTP | Elk | 62 min |
| Jul 15, 5:13 PM EDT | Severe Thunderstorm Warning | CTP | Elk | 62 min |
| Jul 15, 5:25 PM EDT | Severe Thunderstorm Warning | CTP | Cameron | 65 min |
| Jul 15, 6:20 PM EDT | Flash Flood Warning | CTP | Elk, McKean | 3 hr |
| Jul 15, 6:24 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 66 min |
| Jul 15, 7:02 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 63 min |
| Jul 15, 7:27 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Clinton | 63 min |
| Jul 15, 7:29 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 66 min |
| Jul 15, 7:46 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 64 min |
| Jul 18, 1:45 PM EDT | Severe Thunderstorm Watch | SPC | Bradford, Cameron, Clarion, Clinton, Crawford, Elk and 11 more | 6 hr |
| Jul 18, 2:48 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 57 min |
| Jul 18, 2:58 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 62 min |
| Jul 18, 3:02 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, McKean, Potter | 58 min |
| Jul 18, 3:15 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 60 min |
| Jul 18, 3:30 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 65 min |
| Jul 18, 3:56 PM EDT | Severe Thunderstorm Warning | CTP | Bedford | 79 min |
| Jul 18, 4:01 PM EDT | Severe Thunderstorm Warning | CTP | McKean, Potter | 79 min |
| Jul 18, 4:24 PM EDT | Severe Thunderstorm Warning | CTP | Cameron | 61 min |
| Jul 18, 4:32 PM EDT | Severe Thunderstorm Warning | CTP | Clinton, Lycoming | 63 min |
| Jul 18, 4:35 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 65 min |
| Jul 18, 4:44 PM EDT | Tornado Warning | CTP | Clinton | 36 min |
| Jul 18, 4:45 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Berks, Blair, Bucks, Cambria and 37 more | 6 hr |
| Jul 18, 4:58 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Montour, Northumberland | 62 min |
| Jul 18, 4:58 PM EDT | Severe Thunderstorm Warning | CTP | Union | 62 min |
| Jul 18, 5:07 PM EDT | Tornado Warning | CTP | Union | 48 min |
| Jul 18, 5:15 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 60 min |
| Jul 18, 5:28 PM EDT | Tornado Warning | BGM | Luzerne | 62 min |
| Jul 18, 5:41 PM EDT | Severe Thunderstorm Warning | PHI | Carbon | 49 min |
| Jul 18, 5:50 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 60 min |
| Jul 18, 5:59 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Clearfield | 61 min |
| Jul 18, 6:10 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh, Monroe, Northampton | 45 min |
| Jul 18, 6:10 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 45 min |
| Jul 18, 6:29 PM EDT | Tornado Warning | PHI | Monroe | 31 min |
| Jul 18, 6:34 PM EDT | Severe Thunderstorm Warning | CTP | Mifflin | 46 min |
| Jul 18, 6:50 PM EDT | Severe Thunderstorm Warning | CTP | Juniata | 45 min |
| Jul 18, 7:04 PM EDT | Tornado Warning | CTP | Perry | 46 min |
| Jul 18, 7:15 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 50 min |
| Jul 18, 7:17 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 58 min |
| Jul 18, 7:19 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 56 min |
| Jul 18, 7:29 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 46 min |
| Jul 18, 7:31 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Dauphin | 64 min |
| Jul 18, 7:40 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 50 min |
| Jul 18, 7:56 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Washington | 49 min |
| Jul 18, 8:11 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 49 min |
| Jul 18, 8:30 PM EDT | Severe Thunderstorm Warning | CTP | Somerset | 65 min |
| Jul 18, 8:38 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 52 min |
| Jul 18, 8:44 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Westmoreland | 46 min |
| Jul 21, 10:18 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 47 min |
| Jul 21, 10:46 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 64 min |
| Jul 21, 11:23 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Lebanon | 47 min |
| Jul 22, 12:11 AM EDT | Severe Thunderstorm Warning | CTP | Lancaster, Lebanon | 64 min |
| Jul 24, 4:25 AM EDT | Flash Flood Warning | CTP | Schuylkill | 4 hr |
| Jul 28, 1:26 PM EDT | Severe Thunderstorm Warning | PBZ | Greene, Washington | 64 min |
| Jul 28, 1:30 PM EDT | Severe Thunderstorm Watch | SPC | Bedford, Fayette, Greene, Somerset, Washington | 6 hr |
| Jul 28, 1:58 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 62 min |
| Jul 28, 2:19 PM EDT | Severe Thunderstorm Warning | CTP | Somerset | 61 min |
| Jul 28, 2:26 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 49 min |
| Jul 28, 3:08 PM EDT | Severe Thunderstorm Warning | CTP | Bedford | 62 min |
| Jul 28, 4:20 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 65 min |
| Jul 28, 4:59 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 61 min |
| Jul 28, 5:06 PM EDT | Severe Thunderstorm Warning | CTP | York | 64 min |
| Aug 4, 5:47 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland | 33 min |
| Aug 4, 5:54 PM EDT | Severe Thunderstorm Warning | CTP | Adams, York | 61 min |
| Aug 5, 6:31 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 64 min |
| Aug 5, 6:41 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 64 min |
| Aug 11, 6:00 PM EDT | Severe Thunderstorm Warning | CTP | Tioga | 50 min |
| Aug 12, 4:29 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Somerset | 61 min |
| Aug 12, 4:57 PM EDT | Flash Flood Warning | CTP | Bedford, Somerset | 3 hr |
| Aug 12, 5:36 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Somerset | 69 min |
| Aug 12, 6:10 PM EDT | Flash Flood Warning | CTP | Cambria | 3 hr |
| Aug 12, 8:39 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 36 min |
| Aug 12, 8:55 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 50 min |
| Aug 12, 10:23 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 52 min |
| Aug 13, 5:02 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Lancaster | 58 min |
| Aug 15, 5:38 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 52 min |
| Aug 15, 6:20 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 40 min |
| Aug 15, 6:30 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 30 min |
| Aug 15, 6:41 PM EDT | Tornado Warning | CTP | Blair | 49 min |
| Aug 15, 7:00 PM EDT | Tornado Warning | CTP | Centre | 65 min |
| Aug 15, 7:08 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 47 min |
| Aug 15, 7:31 PM EDT | Severe Thunderstorm Warning | CTP | Mifflin | 49 min |
| Aug 15, 8:43 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne | 62 min |
| Aug 16, 3:23 AM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Lawrence | 52 min |
| Aug 16, 3:41 AM EDT | Severe Thunderstorm Warning | PBZ | Butler | 49 min |
| Aug 16, 8:15 AM EDT | Severe Thunderstorm Watch | SPC | Crawford, Erie | 4 hr |
| Aug 16, 11:00 AM EDT | Severe Thunderstorm Watch | SPC | Bradford, Cameron, Clarion, Clinton, Crawford, Elk and 12 more | 6 hr |
| Aug 16, 11:18 AM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 57 min |
| Aug 16, 11:32 AM EDT | Severe Thunderstorm Warning | CTP | Warren | 58 min |
| Aug 16, 11:39 AM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 66 min |
| Aug 16, 12:08 PM EDT | Severe Thunderstorm Warning | PBZ | Venango | 67 min |
| Aug 16, 12:10 PM EDT | Severe Thunderstorm Warning | PBZ | Lawrence | 65 min |
| Aug 16, 12:26 PM EDT | Severe Thunderstorm Warning | CTP | McKean, Warren | 59 min |
| Aug 16, 12:35 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 55 min |
| Aug 16, 12:37 PM EDT | Severe Thunderstorm Warning | PBZ | Forest | 68 min |
| Aug 16, 12:40 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 65 min |
| Aug 16, 12:43 PM EDT | Severe Thunderstorm Warning | CTP | Elk | 62 min |
| Aug 16, 12:46 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 29 min |
| Aug 16, 12:48 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 57 min |
| Aug 16, 1:12 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Potter | 58 min |
| Aug 16, 1:26 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 59 min |
| Aug 16, 1:38 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 52 min |
| Aug 16, 1:43 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 62 min |
| Aug 16, 1:43 PM EDT | Severe Thunderstorm Warning | CTP | Tioga | 62 min |
| Aug 16, 2:01 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 64 min |
| Aug 16, 2:10 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 60 min |
| Aug 16, 2:13 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 62 min |
| Aug 16, 2:17 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 63 min |
| Aug 16, 2:24 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 31 min |
| Aug 16, 2:41 PM EDT | Severe Thunderstorm Warning | CTP | Sullivan | 64 min |
| Aug 16, 2:49 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne, Wyoming | 71 min |
| Aug 16, 2:49 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 71 min |
| Aug 16, 2:56 PM EDT | Tornado Warning | CTP | Sullivan | 49 min |
| Aug 16, 3:00 PM EDT | Severe Thunderstorm Watch | SPC | Berks, Bradford, Bucks, Carbon, Columbia, Dauphin and 21 more | 6 hr |
| Aug 16, 3:04 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Lycoming, Montour, Northumberland | 61 min |
| Aug 16, 3:04 PM EDT | Severe Thunderstorm Warning | CTP | Clinton, Union | 61 min |
| Aug 16, 3:22 PM EDT | Severe Thunderstorm Warning | CTP | Northumberland, Snyder | 63 min |
| Aug 16, 3:22 PM EDT | Severe Thunderstorm Warning | CTP | Columbia | 63 min |
| Aug 16, 3:45 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 40 min |
| Aug 16, 3:52 PM EDT | Severe Thunderstorm Warning | BGM | Pike, Wayne | 68 min |
| Aug 16, 3:58 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 62 min |
| Aug 16, 4:11 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh, Northampton | 44 min |
| Aug 16, 4:11 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 44 min |
| Aug 16, 4:15 PM EDT | Severe Thunderstorm Watch | SPC | Butler, Clarion, Crawford, Erie, Lawrence, Mercer and 1 more | 6 hr |
| Aug 16, 5:02 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 63 min |
| Aug 16, 5:03 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 57 min |
| Aug 16, 5:18 PM EDT | Tornado Warning | PBZ | Mercer | 57 min |
| Aug 16, 5:46 PM EDT | Severe Thunderstorm Warning | PBZ | Venango | 59 min |
| Aug 16, 6:00 PM EDT | Tornado Warning | PBZ | Mercer | 60 min |
| Aug 16, 6:13 PM EDT | Flash Flood Warning | PBZ | Mercer | 4 hr |
| Aug 16, 6:32 PM EDT | Severe Thunderstorm Warning | PBZ | Butler, Venango | 58 min |
| Aug 16, 6:40 PM EDT | Severe Thunderstorm Warning | PBZ | Lawrence | 65 min |
| Aug 16, 7:03 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 57 min |
| Aug 16, 7:03 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 57 min |
| Aug 16, 7:08 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion, Jefferson | 67 min |
| Aug 16, 7:14 PM EDT | Severe Thunderstorm Warning | CTP | McKean | 61 min |
| Aug 16, 7:30 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Bedford, Blair, Butler and 20 more | 5 hr |
| Aug 16, 7:35 PM EDT | Severe Thunderstorm Warning | PBZ | Butler, Lawrence | 55 min |
| Aug 16, 7:36 PM EDT | Severe Thunderstorm Warning | CTP | Potter | 64 min |
| Aug 16, 7:42 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 63 min |
| Aug 16, 8:01 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 64 min |
| Aug 16, 8:03 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 57 min |
| Aug 16, 8:14 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 61 min |
| Aug 16, 8:24 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Armstrong | 66 min |
| Aug 16, 8:45 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 90 min |
| Aug 16, 8:48 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 27 min |
| Aug 16, 8:50 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 60 min |
| Aug 16, 8:57 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 53 min |
| Aug 16, 9:04 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 61 min |
| Aug 16, 9:15 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Westmoreland | 2 hr |
| Aug 16, 9:28 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 2 hr |
| Aug 16, 9:34 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 26 min |
| Aug 16, 9:43 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 22 min |
| Aug 16, 10:05 PM EDT | Severe Thunderstorm Warning | CTP | Mifflin | 50 min |
| Aug 16, 10:09 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 61 min |
| Aug 16, 10:18 PM EDT | Severe Thunderstorm Warning | PHI | Delaware, Montgomery, Philadelphia | 42 min |
| Aug 16, 11:01 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Montour | 64 min |
| Aug 16, 11:25 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 35 min |
| Aug 17, 4:30 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Cumberland, Franklin, Fulton, Lancaster and 3 more | 7 hr |
| Aug 17, 4:45 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Somerset | 60 min |
| Aug 17, 5:12 PM EDT | Severe Thunderstorm Warning | CTP | Fulton | 58 min |
| Aug 17, 5:25 PM EDT | Tornado Warning | CTP | Bedford, Fulton | 35 min |
| Aug 17, 5:29 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 61 min |
| Aug 17, 5:40 PM EDT | Tornado Warning | CTP | Franklin | 50 min |
| Aug 17, 6:00 PM EDT | Severe Thunderstorm Watch | SPC | Chester, Delaware, Philadelphia | 6 hr |
| Aug 28, 4:45 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 60 min |
| Aug 28, 4:54 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Montour | 46 min |
| Aug 28, 5:03 PM EDT | Severe Thunderstorm Warning | CTP | York | 62 min |
| Aug 28, 5:42 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 63 min |
| Sep 10, 5:20 PM EDT | Flash Flood Warning | CLE | Crawford, Erie | 100 min |
| Sep 10, 7:00 PM EDT | Flash Flood Warning | CLE | Crawford, Erie | 90 min |
| Sep 10, 11:30 PM EDT | Flash Flood Warning | CTP | Cumberland, Franklin, Perry | 4 hr |
| Sep 11, 12:20 AM EDT | Flash Flood Warning | CTP | Adams | 4 hr |
| Sep 11, 12:57 AM EDT | Flash Flood Warning | CTP | Snyder, Union | 4 hr |
| Sep 11, 12:57 AM EDT | Flash Flood Warning | CTP | Juniata | 4 hr |
| Sep 11, 3:27 AM EDT | Flash Flood Warning | CTP | Adams, Cumberland, Perry | 5 hr |
| Sep 11, 4:00 AM EDT | Flash Flood Warning | CTP | Lancaster | 4 hr |
| Sep 11, 4:57 AM EDT | Flash Flood Warning | CTP | Juniata, Snyder | 3 hr |
| Sep 11, 7:46 AM EDT | Flash Flood Warning | CTP | Cumberland, Perry | 3 hr |
| Sep 11, 10:41 AM EDT | Flash Flood Warning | CTP | Cumberland, Perry | 3 hr |
| Sep 11, 6:19 PM EDT | Severe Thunderstorm Warning | CTP | York | 56 min |
| Sep 11, 6:23 PM EDT | Flash Flood Warning | PBZ | Venango | 2 hr |
| Sep 28, 11:23 PM EDT | Flash Flood Warning | CTP | Blair, Cambria, Centre, Clearfield | 5 hr |
| Nov 7, 6:08 AM EST | Flash Flood Warning | PBZ | Fayette | 3 hr |
| Nov 7, 11:53 AM EST | Flash Flood Warning | CTP | Bedford | 6 hr |
| Nov 7, 12:23 PM EST | Flash Flood Warning | CTP | Cambria | 6 hr |
| Nov 7, 12:48 PM EST | Flash Flood Warning | CTP | Blair | 6 hr |
| Nov 7, 1:22 PM EST | Flash Flood Warning | PBZ | Jefferson | 4 hr |
| Nov 7, 2:12 PM EST | Flash Flood Warning | CTP | Somerset | 6 hr |
| Nov 7, 4:50 PM EST | Flash Flood Warning | CTP | Bedford, Blair, Cambria, Clearfield, Somerset | 5 hr |
| Nov 7, 4:50 PM EST | Flash Flood Warning | CTP | Franklin, Fulton, Huntingdon | 5 hr |
| Nov 7, 4:50 PM EST | Flash Flood Warning | CTP | Elk | 5 hr |
| Nov 7, 5:20 PM EST | Flash Flood Warning | PBZ | Indiana, Westmoreland | 5 hr |
| Nov 7, 5:39 PM EST | Flash Flood Warning | CTP | Adams, Cumberland | 4 hr |
| Nov 7, 9:37 PM EST | Flash Flood Warning | CTP | Cameron, Clearfield | 6 hr |
| Nov 7, 9:37 PM EST | Flash Flood Warning | CTP | Bedford, Fulton | 6 hr |
| Nov 7, 9:37 PM EST | Flash Flood Warning | CTP | Franklin | 6 hr |
| Nov 7, 9:37 PM EST | Flash Flood Warning | CTP | Cambria, Somerset | 6 hr |
| Nov 7, 9:37 PM EST | Flash Flood Warning | CTP | Blair, Huntingdon | 6 hr |
| Nov 7, 9:37 PM EST | Flash Flood Warning | CTP | Adams, Cumberland | 6 hr |
| Nov 7, 9:45 PM EST | Flash Flood Warning | PBZ | Indiana, Westmoreland | 6 hr |
| Nov 8, 12:48 AM EST | Flash Flood Warning | CTP | Perry | 3 hr |
| Nov 8, 1:29 AM EST | Flash Flood Warning | PBZ | Armstrong | 5 hr |
| Nov 8, 3:40 AM EST | Flash Flood Warning | CTP | Bedford, Blair, Cambria, Clearfield, Huntingdon | 5 hr |
| Nov 8, 3:40 AM EST | Flash Flood Warning | CTP | Adams, Cumberland, Franklin, Fulton, Perry | 5 hr |
| Nov 8, 3:40 AM EST | Flash Flood Warning | CTP | Somerset | 5 hr |
| Nov 8, 3:58 AM EST | Flash Flood Warning | PBZ | Indiana, Westmoreland | 4 hr |
| Nov 8, 5:22 AM EST | Flash Flood Warning | CTP | Lancaster | 4 hr |
| Nov 8, 6:28 AM EST | Flash Flood Warning | PBZ | Jefferson | 5 hr |
| Nov 8, 7:58 AM EST | Flash Flood Warning | PBZ | Indiana, Westmoreland | 6 hr |
| Nov 8, 8:25 AM EST | Flash Flood Warning | PBZ | Indiana, Westmoreland | 6 hr |
| Nov 8, 8:55 AM EST | Flash Flood Warning | CTP | Franklin, Fulton, Huntingdon | 2 hr |
| Nov 8, 8:55 AM EST | Flash Flood Warning | CTP | Blair, Cambria, Clearfield | 2 hr |
| Nov 8, 8:55 AM EST | Flash Flood Warning | CTP | Bedford, Somerset | 2 hr |
| Nov 8, 10:50 AM EST | Flash Flood Warning | CTP | Bedford, Blair, Cambria, Clearfield | 3 hr |
| Nov 8, 10:50 AM EST | Flash Flood Warning | CTP | Fulton, Huntingdon | 3 hr |
| Nov 8, 8:24 PM EST | Flash Flood Warning | CTP | Clearfield | 6 hr |
| Nov 9, 2:30 AM EST | Flash Flood Warning | CTP | Clearfield | 6 hr |
| Nov 9, 8:28 AM EST | Flash Flood Warning | CTP | Clearfield | 5 hr |
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 | 306 |
| Tornado Warning | 22 |
| Severe Thunderstorm Watch | 27 |
| Tornado Watch | 1 |
| Flooding | |
| Flash Flood Warning | 111 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Bedford County29
- Clearfield County27
- Westmoreland County26
- Allegheny County24
- Somerset County23
- Crawford County22
- Lancaster County22
- Centre County21
- McKean County21
- Washington County21
- Schuylkill County20
- Clinton County20
- Cambria County20
- Franklin County20
- Erie County19
- Fayette County19
- Huntingdon County19
- Cumberland County19
- Mercer County19
- Blair County19
- Adams County18
- Elk County18
- Bucks County17
- Berks County17
- Perry County17
- York County17
- Monroe County17
- Fulton County17
- Indiana County17
- Venango County17
- Warren County16
- Armstrong County16
- Carbon County16
- Luzerne County16
- Cameron County16
- Dauphin County15
- Potter County15
- Tioga County15
- Lehigh County14
- Columbia County14
27 more counties
- Lycoming County14
- Sullivan County14
- Montgomery County13
- Lackawanna County13
- Northampton County13
- Pike County13
- Wayne County13
- Bradford County13
- Juniata County13
- Montour County13
- Northumberland County13
- Beaver County13
- Butler County13
- Lebanon County12
- Jefferson County12
- Snyder County12
- Union County12
- Delaware County11
- Greene County11
- Mifflin County11
- Clarion County10
- Philadelphia County10
- Susquehanna County10
- Lawrence County10
- Chester County9
- Forest County9
- Wyoming County9
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive19961998
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.