Weather alerts in Pennsylvania, 2000
677 weather alerts in 2000, 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 2000. Tap one for its archive.
- Alerts
- 677
- Warnings
- 637
- Watches
- 40
- Advisories
- 0
- Busiest month
- May200 alerts
- Busiest day
- May 10, 200060 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 |
|---|---|---|---|---|
| Feb 15, 9:30 PM EST | Flash Flood Warning | CTP | Clearfield | 6 hr |
| Feb 18, 11:38 PM EST | Flash Flood Warning | CTP | Somerset | 82 min |
| Mar 9, 6:01 PM EST | Severe Thunderstorm Warning | BGM | Lackawanna, Susquehanna, Wayne | 44 min |
| Mar 9, 6:34 PM EST | Severe Thunderstorm Warning | BGM | Pike | 41 min |
| Mar 21, 10:30 AM EST | Flash Flood Warning | CTP | Cameron, Clearfield, Elk, McKean, Warren | 15 min |
| Mar 21, 10:40 AM EST | Flash Flood Warning | CTP | Cambria, Somerset | 15 min |
| Mar 21, 6:22 PM EST | Flash Flood Warning | PHI | Chester | 4 hr |
| Mar 21, 8:20 PM EST | Flash Flood Warning | PHI | Berks, Chester, Delaware, Montgomery | 6 hr |
| Mar 22, 3:30 AM EST | Flash Flood Warning | PHI | Lehigh | 7 hr |
| Mar 22, 10:30 AM EST | Flash Flood Warning | CTP | Bedford, Blair, Centre, Clinton, Fulton, Huntingdon and 2 more | 15 min |
| Mar 22, 10:40 AM EST | Flash Flood Warning | CTP | Lycoming, Montour, Northumberland, Potter, Snyder, Sullivan and 2 more | 15 min |
| Mar 22, 10:45 AM EST | Flash Flood Warning | CTP | Adams, Cumberland, Dauphin, Franklin, Lancaster, Lebanon and 2 more | 15 min |
| Mar 23, 9:40 AM EST | Flash Flood Warning | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 65 min |
| Mar 23, 10:30 AM EST | Flash Flood Warning | CTP | Columbia, Schuylkill | 15 min |
| Mar 23, 10:40 AM EST | Flash Flood Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 15 min |
| Mar 25, 2:53 PM EST | Severe Thunderstorm Warning | CTP | Somerset | 37 min |
| Mar 25, 3:09 PM EST | Severe Thunderstorm Warning | CTP | Centre | 51 min |
| Mar 25, 4:18 PM EST | Severe Thunderstorm Warning | CTP | Clearfield | 27 min |
| Mar 25, 4:34 PM EST | Severe Thunderstorm Warning | CTP | Lycoming | 41 min |
| Mar 25, 4:53 PM EST | Severe Thunderstorm Warning | CTP | Cumberland | 37 min |
| Mar 25, 4:55 PM EST | Severe Thunderstorm Warning | CTP | Juniata, Snyder | 35 min |
| Mar 25, 5:10 PM EST | Severe Thunderstorm Warning | CTP | Lycoming | 50 min |
| Mar 25, 5:18 PM EST | Severe Thunderstorm Warning | CTP | Dauphin, Lebanon | 42 min |
| Mar 25, 6:56 PM EST | Severe Thunderstorm Warning | PHI | Berks, Bucks, Lehigh | 34 min |
| Apr 3, 11:55 PM EDT | Flash Flood Warning | BGM | Bradford | 3 hr |
| Apr 4, 3:00 AM EDT | Flash Flood Warning | BGM | Bradford | 3 hr |
| Apr 8, 8:09 AM EDT | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Apr 8, 2:59 PM EDT | Severe Thunderstorm Warning | BGM | Bradford, Susquehanna | 61 min |
| Apr 20, 7:15 PM EDT | Severe Thunderstorm Watch | SPC | Crawford, Mercer | 5 hr |
| Apr 20, 10:28 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 47 min |
| Apr 20, 10:32 PM EDT | Severe Thunderstorm Warning | PBZ | Lawrence, Mercer | 58 min |
| Apr 20, 10:42 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 58 min |
| Apr 20, 10:48 PM EDT | Severe Thunderstorm Warning | PBZ | Butler, Venango | 62 min |
| Apr 20, 10:53 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 57 min |
| Apr 20, 11:09 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 51 min |
| Apr 20, 11:15 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 65 min |
| Apr 20, 11:32 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 58 min |
| Apr 22, 5:55 PM EDT | Flash Flood Warning | CTP | Bedford | 3 hr |
| Apr 22, 8:45 PM EDT | Flash Flood Warning | CTP | Bedford | 3 hr |
| May 9, 5:52 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 53 min |
| May 9, 6:57 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 63 min |
| May 9, 7:00 PM EDT | Severe Thunderstorm Warning | BGM | Bradford, Susquehanna | 60 min |
| May 9, 8:00 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna, Wayne | 60 min |
| May 9, 8:57 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 63 min |
| May 10, 2:21 AM EDT | Severe Thunderstorm Warning | PBZ | Washington | 49 min |
| May 10, 2:57 AM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 43 min |
| May 10, 3:41 AM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 49 min |
| May 10, 4:08 AM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 42 min |
| May 10, 4:33 AM EDT | Severe Thunderstorm Warning | CTP | Elk | 57 min |
| May 10, 5:00 AM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 50 min |
| May 10, 5:54 AM EDT | Severe Thunderstorm Warning | CTP | McKean | 36 min |
| May 10, 8:06 AM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Lawrence | 64 min |
| May 10, 8:25 AM EDT | Severe Thunderstorm Warning | PBZ | Butler | 65 min |
| May 10, 8:57 AM EDT | Severe Thunderstorm Warning | PHI | Carbon | 23 min |
| May 10, 9:30 AM EDT | Severe Thunderstorm Warning | PHI | Monroe | 30 min |
| May 10, 9:50 AM EDT | Severe Thunderstorm Warning | BGM | Pike | 55 min |
| May 10, 10:09 AM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 51 min |
| May 10, 10:25 AM EDT | Severe Thunderstorm Warning | BGM | Bradford | 65 min |
| May 10, 10:26 AM EDT | Severe Thunderstorm Warning | CTP | Sullivan | 64 min |
| May 10, 10:32 AM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 58 min |
| May 10, 10:38 AM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 62 min |
| May 10, 10:45 AM EDT | Severe Thunderstorm Watch | SPC | Bedford, Blair, Bradford, Cambria, Cameron, Centre and 24 more | 6 hr |
| May 10, 10:52 AM EDT | Severe Thunderstorm Warning | CTP | Elk | 53 min |
| May 10, 11:10 AM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Dauphin, Perry | 65 min |
| May 10, 11:15 AM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bucks, Carbon, Chester, Columbia and 17 more | 6 hr |
| May 10, 11:17 AM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 58 min |
| May 10, 11:28 AM EDT | Severe Thunderstorm Warning | CTP | McKean | 62 min |
| May 10, 11:41 AM EDT | Severe Thunderstorm Warning | CTP | Cameron, Elk | 49 min |
| May 10, 11:42 AM EDT | Tornado Warning | CTP | Dauphin | 33 min |
| May 10, 11:48 AM EDT | Severe Thunderstorm Warning | CTP | York | 57 min |
| May 10, 11:49 AM EDT | Severe Thunderstorm Warning | BGM | Susquehanna, Wyoming | 56 min |
| May 10, 12:05 PM EDT | Severe Thunderstorm Warning | CTP | Lebanon, Schuylkill | 55 min |
| May 10, 12:14 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Clearfield | 46 min |
| May 10, 12:16 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 59 min |
| May 10, 12:19 PM EDT | Severe Thunderstorm Warning | CTP | Columbia | 56 min |
| May 10, 12:28 PM EDT | Severe Thunderstorm Warning | CTP | Blair | 62 min |
| May 10, 12:32 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Somerset | 58 min |
| May 10, 12:40 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Clinton | 65 min |
| May 10, 12:49 PM EDT | Severe Thunderstorm Warning | CTP | Tioga | 71 min |
| May 10, 12:58 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Perry | 62 min |
| May 10, 1:05 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 70 min |
| May 10, 1:09 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Franklin | 66 min |
| May 10, 1:18 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 57 min |
| May 10, 1:40 PM EDT | Severe Thunderstorm Warning | CTP | Northumberland | 65 min |
| May 10, 1:45 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 45 min |
| May 10, 1:58 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Northumberland | 62 min |
| May 10, 2:12 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 63 min |
| May 10, 2:17 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Schuylkill | 58 min |
| May 10, 2:30 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 45 min |
| May 10, 2:45 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Franklin | 60 min |
| May 10, 2:51 PM EDT | Severe Thunderstorm Warning | CTP | Sullivan | 39 min |
| May 10, 3:07 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Northumberland | 68 min |
| May 10, 3:19 PM EDT | Severe Thunderstorm Warning | BGM | Bradford, Susquehanna | 41 min |
| May 10, 3:19 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, York | 86 min |
| May 10, 3:48 PM EDT | Flash Flood Warning | BGM | Susquehanna | 3 hr |
| May 10, 3:55 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 25 min |
| May 10, 3:56 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 64 min |
| May 10, 4:27 PM EDT | Tornado Warning | CTP | Lancaster | 48 min |
| May 10, 4:50 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 25 min |
| May 10, 5:33 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 27 min |
| May 10, 5:35 PM EDT | Flash Flood Warning | BGM | Bradford | 3 hr |
| May 10, 6:02 PM EDT | Severe Thunderstorm Warning | BGM | Pike | 28 min |
| May 12, 3:10 PM EDT | Severe Thunderstorm Warning | CTP | Tioga | 65 min |
| May 12, 5:46 PM EDT | Severe Thunderstorm Warning | CTP | Potter, Tioga | 59 min |
| May 12, 6:09 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 66 min |
| May 12, 6:40 PM EDT | Severe Thunderstorm Warning | CTP | Potter | 35 min |
| May 12, 7:56 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 49 min |
| May 13, 8:23 AM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 47 min |
| May 13, 8:25 AM EDT | Severe Thunderstorm Warning | CTP | Somerset | 65 min |
| May 13, 2:45 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Chester, Delaware, Lancaster, Philadelphia, York | 5 hr |
| May 13, 4:17 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 43 min |
| May 13, 5:00 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Blair, Bradford, Centre, Clinton and 23 more | 5 hr |
| May 13, 5:08 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 67 min |
| May 13, 5:20 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 55 min |
| May 13, 5:22 PM EDT | Severe Thunderstorm Warning | CTP | Snyder | 68 min |
| May 13, 5:28 PM EDT | Severe Thunderstorm Warning | CTP | Northumberland, Union | 62 min |
| May 13, 5:32 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 43 min |
| May 13, 5:35 PM EDT | Flash Flood Warning | BGM | Bradford | 3 hr |
| May 13, 5:36 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Franklin, Perry | 54 min |
| May 13, 6:00 PM EDT | Severe Thunderstorm Watch | SPC | Berks, Bucks, Carbon, Lackawanna, Lehigh, Monroe and 4 more | 5 hr |
| May 13, 6:07 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 68 min |
| May 13, 6:12 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh | 48 min |
| May 13, 6:20 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 55 min |
| May 13, 6:42 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Lebanon | 63 min |
| May 13, 6:44 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh, Northampton | 46 min |
| May 13, 6:49 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 56 min |
| May 13, 6:56 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Lehigh, Montgomery | 64 min |
| May 13, 7:02 PM EDT | Severe Thunderstorm Warning | PHI | Carbon | 43 min |
| May 13, 7:12 PM EDT | Tornado Warning | PHI | Bucks, Montgomery | 33 min |
| May 13, 7:13 PM EDT | Tornado Warning | CTP | York | 32 min |
| May 13, 7:23 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh | 52 min |
| May 13, 7:25 PM EDT | Tornado Warning | CTP | Lancaster | 35 min |
| May 13, 7:39 PM EDT | Severe Thunderstorm Warning | PHI | Monroe, Northampton | 41 min |
| May 13, 7:47 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Montgomery | 43 min |
| May 13, 7:53 PM EDT | Tornado Warning | PHI | Lehigh, Northampton | 37 min |
| May 13, 7:59 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 31 min |
| May 13, 8:00 PM EDT | Severe Thunderstorm Watch | SPC | Chester, Delaware, Philadelphia | 3 hr |
| May 13, 8:14 PM EDT | Severe Thunderstorm Warning | PHI | Delaware | 36 min |
| May 13, 8:19 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery, Philadelphia | 41 min |
| May 18, 2:42 PM EDT | Severe Thunderstorm Warning | CTP | McKean, Potter, Warren | 63 min |
| May 18, 3:01 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Elk | 44 min |
| May 18, 3:04 PM EDT | Severe Thunderstorm Warning | CTP | Tioga | 41 min |
| May 18, 3:07 PM EDT | Severe Thunderstorm Warning | BGM | Bradford, Susquehanna | 38 min |
| May 18, 3:15 PM EDT | Severe Thunderstorm Watch | SPC | Blair, Bradford, Cambria, Cameron, Carbon, Centre and 27 more | 5 hr |
| May 18, 3:34 PM EDT | Severe Thunderstorm Warning | CTP | Clinton, Lycoming | 71 min |
| May 18, 3:40 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Elk | 50 min |
| May 18, 3:43 PM EDT | Severe Thunderstorm Warning | CTP | Potter, Tioga | 47 min |
| May 18, 3:45 PM EDT | Severe Thunderstorm Warning | BGM | Bradford, Susquehanna | 45 min |
| May 18, 3:45 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 45 min |
| May 18, 3:51 PM EDT | Severe Thunderstorm Warning | CTP | Sullivan | 69 min |
| May 18, 3:55 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 35 min |
| May 18, 4:09 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Wyoming | 36 min |
| May 18, 4:25 PM EDT | Flash Flood Warning | BGM | Bradford | 2 hr |
| May 18, 4:25 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 50 min |
| May 18, 4:25 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 50 min |
| May 18, 4:30 PM EDT | Severe Thunderstorm Warning | CTP | Clinton, Lycoming | 45 min |
| May 18, 4:39 PM EDT | Severe Thunderstorm Warning | BGM | Pike, Wayne | 51 min |
| May 18, 4:39 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne, Wyoming | 51 min |
| May 18, 4:45 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Montour, Northumberland | 60 min |
| May 18, 5:19 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 41 min |
| May 18, 5:36 PM EDT | Severe Thunderstorm Warning | PHI | Carbon | 24 min |
| May 18, 6:00 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 30 min |
| May 18, 6:00 PM EDT | Severe Thunderstorm Watch | SPC | Lehigh, Northampton | 4 hr |
| May 18, 6:04 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 41 min |
| May 18, 6:20 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 60 min |
| May 18, 6:43 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 17 min |
| May 18, 6:48 PM EDT | Severe Thunderstorm Warning | PBZ | Venango | 62 min |
| May 18, 6:59 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 61 min |
| May 18, 8:00 PM EDT | Severe Thunderstorm Warning | CTP | Elk | 30 min |
| May 18, 8:27 PM EDT | Severe Thunderstorm Warning | CTP | Cameron | 33 min |
| May 18, 9:59 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh | 31 min |
| May 18, 10:09 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 36 min |
| May 18, 11:05 PM EDT | Severe Thunderstorm Warning | PBZ | Lawrence | 65 min |
| May 18, 11:37 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 63 min |
| May 18, 11:40 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 60 min |
| May 18, 11:45 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Blair, Butler, Cambria and 27 more | 5 hr |
| May 19, 12:06 AM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 64 min |
| May 19, 12:19 AM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 61 min |
| May 19, 2:36 AM EDT | Severe Thunderstorm Warning | PBZ | Greene | 64 min |
| May 19, 6:31 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 49 min |
| May 23, 4:56 PM EDT | Severe Thunderstorm Warning | PBZ | Lawrence | 64 min |
| May 23, 5:43 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 37 min |
| May 23, 6:15 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Beaver, Butler, Fayette, Greene, Lawrence and 3 more | 6 hr |
| May 23, 6:59 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 41 min |
| May 23, 7:11 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 59 min |
| May 23, 7:16 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 64 min |
| May 23, 7:56 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| May 23, 8:00 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 60 min |
| May 23, 8:57 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Westmoreland | 43 min |
| May 24, 2:58 AM EDT | Severe Thunderstorm Warning | CTP | Warren | 47 min |
| May 24, 6:45 AM EDT | Severe Thunderstorm Warning | PBZ | Greene | 65 min |
| May 24, 12:45 PM EDT | Severe Thunderstorm Warning | CTP | Elk | 30 min |
| May 24, 1:15 PM EDT | Severe Thunderstorm Watch | SPC | Bradford, Clinton, Columbia, Lackawanna, Luzerne, Lycoming and 6 more | 6 hr |
| May 24, 1:29 PM EDT | Severe Thunderstorm Warning | CTP | Elk | 31 min |
| May 24, 1:46 PM EDT | Severe Thunderstorm Warning | CTP | Cameron | 29 min |
| May 24, 2:06 PM EDT | Severe Thunderstorm Warning | CTP | York | 39 min |
| May 24, 2:07 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Franklin | 38 min |
| May 24, 2:12 PM EDT | Severe Thunderstorm Warning | CTP | Columbia | 33 min |
| May 24, 2:14 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 61 min |
| May 24, 2:16 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 59 min |
| May 24, 2:23 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 67 min |
| May 24, 2:33 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 57 min |
| May 24, 2:48 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 57 min |
| May 24, 2:53 PM EDT | Severe Thunderstorm Warning | CTP | York | 67 min |
| May 24, 3:00 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Allegheny, Armstrong, Beaver, Bedford, Berks and 38 more | 6 hr |
| May 24, 3:10 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 20 min |
| May 24, 3:14 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 31 min |
| May 24, 3:16 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 59 min |
| May 24, 3:21 PM EDT | Severe Thunderstorm Warning | CTP | Union | 39 min |
| May 24, 3:22 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Wyoming | 53 min |
| May 24, 3:29 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna, Wayne | 46 min |
| May 24, 3:29 PM EDT | Severe Thunderstorm Warning | PHI | Carbon | 31 min |
| May 24, 3:41 PM EDT | Severe Thunderstorm Warning | BGM | Pike | 64 min |
| May 24, 3:53 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 57 min |
| May 24, 3:54 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 36 min |
| May 24, 4:05 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Clarion | 65 min |
| May 24, 4:11 PM EDT | Severe Thunderstorm Warning | PHI | Northampton | 24 min |
| May 24, 4:13 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 47 min |
| May 24, 4:15 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 45 min |
| May 24, 4:22 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 48 min |
| May 24, 4:25 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Clearfield | 50 min |
| May 24, 4:30 PM EDT | Severe Thunderstorm Watch | SPC | Northampton, Pike | 6 hr |
| May 24, 4:32 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 43 min |
| May 24, 4:40 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 35 min |
| May 24, 4:57 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 33 min |
| May 24, 5:04 PM EDT | Severe Thunderstorm Warning | PHI | Northampton | 26 min |
| May 24, 5:15 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 60 min |
| May 24, 5:22 PM EDT | Severe Thunderstorm Warning | CTP | Mifflin | 53 min |
| May 24, 5:43 PM EDT | Severe Thunderstorm Warning | CTP | Juniata, Snyder | 47 min |
| May 24, 6:07 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Northumberland | 53 min |
| May 24, 6:28 PM EDT | Severe Thunderstorm Warning | CTP | Lebanon, Schuylkill | 47 min |
| May 24, 7:15 PM EDT | Severe Thunderstorm Warning | CTP | Lebanon | 15 min |
| May 24, 7:19 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh | 26 min |
| May 24, 7:24 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 36 min |
| May 24, 7:44 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 46 min |
| May 24, 8:13 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 32 min |
| May 24, 8:32 PM EDT | Severe Thunderstorm Warning | PHI | Delaware, Montgomery | 28 min |
| May 24, 8:42 PM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 33 min |
| May 31, 7:57 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 48 min |
| May 31, 8:37 PM EDT | Flash Flood Warning | CLE | Crawford | 113 min |
| Jun 2, 11:21 AM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 54 min |
| Jun 2, 11:24 AM EDT | Severe Thunderstorm Warning | CTP | Warren | 66 min |
| Jun 2, 12:00 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Blair, Bradford, Butler and 39 more | 6 hr |
| Jun 2, 12:21 PM EDT | Tornado Warning | CTP | Warren | 54 min |
| Jun 2, 12:44 PM EDT | Tornado Warning | CTP | McKean | 2 hr |
| Jun 2, 1:02 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 58 min |
| Jun 2, 1:37 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 53 min |
| Jun 2, 2:02 PM EDT | Severe Thunderstorm Warning | PBZ | Venango | 58 min |
| Jun 2, 2:16 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 59 min |
| Jun 2, 2:21 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 59 min |
| Jun 2, 2:24 PM EDT | Severe Thunderstorm Warning | CTP | Potter | 51 min |
| Jun 2, 2:43 PM EDT | Severe Thunderstorm Warning | CTP | Elk | 62 min |
| Jun 2, 2:43 PM EDT | Severe Thunderstorm Warning | PBZ | Lawrence | 57 min |
| Jun 2, 2:53 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 57 min |
| Jun 2, 2:58 PM EDT | Severe Thunderstorm Warning | CTP | McKean | 47 min |
| Jun 2, 3:10 PM EDT | Severe Thunderstorm Warning | CTP | Cameron | 65 min |
| Jun 2, 3:14 PM EDT | Severe Thunderstorm Warning | CTP | Potter | 61 min |
| Jun 2, 3:19 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 61 min |
| Jun 2, 3:22 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 53 min |
| Jun 2, 3:26 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 64 min |
| Jun 2, 3:30 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 75 min |
| Jun 2, 3:35 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 65 min |
| Jun 2, 3:40 PM EDT | Severe Thunderstorm Warning | CTP | Tioga | 65 min |
| Jun 2, 3:58 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 92 min |
| Jun 2, 4:00 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 95 min |
| Jun 2, 4:00 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 60 min |
| Jun 2, 4:04 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 56 min |
| Jun 2, 4:13 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 62 min |
| Jun 2, 4:17 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 63 min |
| Jun 2, 4:19 PM EDT | Severe Thunderstorm Warning | CTP | Sullivan | 56 min |
| Jun 2, 4:23 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 27 min |
| Jun 2, 4:24 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 66 min |
| Jun 2, 4:48 PM EDT | Severe Thunderstorm Warning | BGM | Bradford, Wyoming | 57 min |
| Jun 2, 4:49 PM EDT | Severe Thunderstorm Warning | CTP | Northumberland, Snyder, Union | 56 min |
| Jun 2, 4:49 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Montour | 56 min |
| Jun 2, 4:53 PM EDT | Severe Thunderstorm Warning | CTP | Blair | 67 min |
| Jun 2, 5:03 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion, Venango | 57 min |
| Jun 2, 5:05 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon, Juniata, Mifflin | 55 min |
| Jun 2, 5:06 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 64 min |
| Jun 2, 5:13 PM EDT | Severe Thunderstorm Warning | CTP | Somerset | 77 min |
| Jun 2, 5:15 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Berks, Blair, Cambria, Carbon and 30 more | 5 hr |
| Jun 2, 5:18 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne, Susquehanna | 57 min |
| Jun 2, 5:21 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 59 min |
| Jun 2, 5:32 PM EDT | Severe Thunderstorm Warning | CTP | Bedford | 58 min |
| Jun 2, 5:40 PM EDT | Severe Thunderstorm Warning | BGM | Pike, Wayne | 65 min |
| Jun 2, 5:40 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Lebanon, Schuylkill | 95 min |
| Jun 2, 5:40 PM EDT | Severe Thunderstorm Warning | CTP | Perry | 95 min |
| Jun 2, 5:48 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 42 min |
| Jun 2, 6:02 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Franklin | 88 min |
| Jun 2, 6:02 PM EDT | Severe Thunderstorm Warning | CTP | Fulton | 88 min |
| Jun 2, 6:25 PM EDT | Severe Thunderstorm Warning | PHI | Northampton | 50 min |
| Jun 2, 6:28 PM EDT | Severe Thunderstorm Warning | CTP | Bedford | 47 min |
| Jun 2, 6:37 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 38 min |
| Jun 2, 6:41 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 34 min |
| Jun 2, 7:00 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bucks, Chester, Delaware, Lancaster and 3 more | 5 hr |
| Jun 2, 7:27 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 48 min |
| Jun 2, 7:57 PM EDT | Severe Thunderstorm Warning | CTP | York | 63 min |
| Jun 5, 5:58 PM EDT | Severe Thunderstorm Warning | PBZ | Greene, Washington | 42 min |
| Jun 5, 6:36 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 44 min |
| Jun 6, 10:22 AM EDT | Flash Flood Warning | PBZ | Fayette | 3 hr |
| Jun 11, 2:15 PM EDT | Severe Thunderstorm Watch | SPC | Monroe, Pike, Wayne | 6 hr |
| Jun 11, 4:26 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 64 min |
| Jun 11, 6:38 PM EDT | Severe Thunderstorm Warning | CTP | Clinton, Lycoming | 67 min |
| Jun 11, 7:03 PM EDT | Severe Thunderstorm Warning | CTP | Union | 42 min |
| Jun 11, 7:16 PM EDT | Severe Thunderstorm Warning | BGM | Pike | 29 min |
| Jun 11, 7:17 PM EDT | Severe Thunderstorm Warning | CTP | Montour, Northumberland | 43 min |
| Jun 11, 7:34 PM EDT | Severe Thunderstorm Warning | CTP | Columbia | 26 min |
| Jun 11, 7:37 PM EDT | Severe Thunderstorm Warning | CTP | Mifflin, Snyder | 53 min |
| Jun 11, 7:47 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 58 min |
| Jun 11, 7:48 PM EDT | Severe Thunderstorm Warning | CTP | Union | 42 min |
| Jun 11, 7:50 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 55 min |
| Jun 11, 7:56 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 34 min |
| Jun 11, 7:59 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Schuylkill | 61 min |
| Jun 11, 8:06 PM EDT | Severe Thunderstorm Warning | CTP | Northumberland, Snyder | 54 min |
| Jun 11, 8:25 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Perry | 65 min |
| Jun 11, 8:25 PM EDT | Severe Thunderstorm Warning | CTP | Juniata | 65 min |
| Jun 11, 8:49 PM EDT | Severe Thunderstorm Warning | PHI | Northampton | 26 min |
| Jun 11, 8:51 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Indiana | 54 min |
| Jun 12, 5:09 PM EDT | Flash Flood Warning | PBZ | Beaver | 4 hr |
| Jun 13, 2:06 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 24 min |
| Jun 13, 2:13 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer, Venango | 62 min |
| Jun 13, 4:44 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 76 min |
| Jun 13, 4:46 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 59 min |
| Jun 14, 4:47 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 43 min |
| Jun 14, 7:51 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 39 min |
| Jun 14, 9:25 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 65 min |
| Jun 14, 10:30 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 45 min |
| Jun 14, 10:59 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 61 min |
| Jun 14, 11:18 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 57 min |
| Jun 14, 11:38 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 67 min |
| Jun 14, 11:57 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 63 min |
| Jun 15, 12:25 AM EDT | Severe Thunderstorm Warning | PBZ | Venango | 65 min |
| Jun 15, 12:17 PM EDT | Severe Thunderstorm Warning | CTP | McKean | 58 min |
| Jun 15, 12:26 PM EDT | Severe Thunderstorm Warning | CTP | Potter | 64 min |
| Jun 15, 12:30 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Bedford, Blair, Butler and 21 more | 6 hr |
| Jun 15, 12:45 PM EDT | Severe Thunderstorm Warning | CTP | Cambria, Clearfield | 60 min |
| Jun 15, 1:54 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Fulton | 51 min |
| Jun 15, 2:05 PM EDT | Tornado Warning | CTP | Fulton | 25 min |
| Jun 15, 2:15 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bradford, Columbia, Cumberland, Dauphin, Franklin and 18 more | 6 hr |
| Jun 15, 2:20 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Huntingdon | 55 min |
| Jun 15, 2:40 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 65 min |
| Jun 15, 3:15 PM EDT | Severe Thunderstorm Warning | CTP | Mifflin | 45 min |
| Jun 15, 7:03 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 57 min |
| Jun 16, 4:03 PM EDT | Severe Thunderstorm Warning | CTP | Fulton | 57 min |
| Jun 16, 4:40 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 65 min |
| Jun 16, 5:27 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming, Sullivan | 63 min |
| Jun 16, 5:37 PM EDT | Tornado Warning | CTP | Lycoming | 23 min |
| Jun 16, 5:52 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 53 min |
| Jun 16, 5:52 PM EDT | Tornado Warning | CTP | Lycoming, Sullivan | 38 min |
| Jun 16, 6:25 PM EDT | Tornado Warning | CTP | Lycoming | 35 min |
| Jun 16, 6:31 PM EDT | Severe Thunderstorm Warning | CTP | Sullivan | 29 min |
| Jun 16, 7:13 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 62 min |
| Jun 16, 7:22 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 53 min |
| Jun 16, 7:53 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 37 min |
| Jun 18, 2:30 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bucks, Chester, Cumberland, Dauphin and 7 more | 7 hr |
| Jun 18, 3:51 PM EDT | Tornado Warning | PHI | Delaware | 29 min |
| Jun 18, 4:15 PM EDT | Tornado Warning | PHI | Delaware, Philadelphia | 30 min |
| Jun 18, 5:14 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin | 46 min |
| Jun 18, 9:07 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 53 min |
| Jun 21, 2:00 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Bedford, Blair, Bradford, Cambria and 30 more | 5 hr |
| Jun 21, 3:06 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 24 min |
| Jun 21, 3:41 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Potter | 64 min |
| Jun 21, 3:54 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana, Westmoreland | 66 min |
| Jun 21, 4:13 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 62 min |
| Jun 21, 4:13 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 47 min |
| Jun 21, 4:32 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 43 min |
| Jun 21, 4:36 PM EDT | Severe Thunderstorm Warning | CTP | Tioga | 54 min |
| Jun 21, 4:43 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 77 min |
| Jun 21, 4:51 PM EDT | Severe Thunderstorm Warning | CTP | Blair | 24 min |
| Jun 21, 4:58 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 47 min |
| Jun 21, 5:07 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 53 min |
| Jun 21, 5:35 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 40 min |
| Jun 21, 5:41 PM EDT | Severe Thunderstorm Warning | CTP | Sullivan | 64 min |
| Jun 21, 5:45 PM EDT | Severe Thunderstorm Warning | CTP | Mifflin | 60 min |
| Jun 21, 5:52 PM EDT | Severe Thunderstorm Warning | CTP | Northumberland, Union | 53 min |
| Jun 21, 5:52 PM EDT | Severe Thunderstorm Warning | CTP | Montour | 53 min |
| Jun 21, 6:07 PM EDT | Severe Thunderstorm Warning | CTP | Snyder | 53 min |
| Jun 21, 6:13 PM EDT | Severe Thunderstorm Warning | CTP | Columbia | 62 min |
| Jun 21, 6:25 PM EDT | Severe Thunderstorm Warning | CTP | Juniata | 35 min |
| Jun 21, 6:33 PM EDT | Tornado Warning | CTP | Juniata | 27 min |
| Jun 21, 6:42 PM EDT | Severe Thunderstorm Warning | CTP | Perry | 63 min |
| Jun 21, 6:46 PM EDT | Tornado Warning | CTP | Perry | 29 min |
| Jun 21, 6:49 PM EDT | Severe Thunderstorm Warning | CTP | Northumberland | 41 min |
| Jun 21, 6:59 PM EDT | Severe Thunderstorm Warning | CTP | Franklin, Fulton | 76 min |
| Jun 21, 6:59 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Lebanon, Schuylkill | 76 min |
| Jun 21, 6:59 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland | 76 min |
| Jun 21, 7:33 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 57 min |
| Jun 21, 7:48 PM EDT | Severe Thunderstorm Warning | CTP | York | 72 min |
| Jun 21, 8:09 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 81 min |
| Jun 21, 8:25 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 35 min |
| Jun 21, 9:00 PM EDT | Severe Thunderstorm Warning | CTP | York | 30 min |
| Jun 21, 9:11 PM EDT | Severe Thunderstorm Warning | PHI | Northampton | 19 min |
| Jun 24, 6:39 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 21 min |
| Jun 24, 7:06 PM EDT | Severe Thunderstorm Warning | CTP | McKean | 54 min |
| Jun 25, 3:00 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bucks, Carbon, Chester, Columbia and 27 more | 5 hr |
| Jun 25, 5:00 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 30 min |
| Jun 25, 5:03 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland | 57 min |
| Jun 25, 5:28 PM EDT | Severe Thunderstorm Warning | PHI | Carbon | 32 min |
| Jun 25, 5:30 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Wayne | 45 min |
| Jun 25, 5:53 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 67 min |
| Jun 25, 6:53 PM EDT | Severe Thunderstorm Warning | CTP | Franklin, Fulton | 67 min |
| Jun 25, 6:59 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, Lebanon | 46 min |
| Jun 25, 7:01 PM EDT | Flash Flood Warning | PHI | Berks | 2 hr |
| Jun 25, 7:23 PM EDT | Flash Flood Warning | CTP | Lancaster, Lebanon | 3 hr |
| Jun 25, 7:45 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 60 min |
| Jun 25, 8:00 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bucks, Carbon, Chester, Cumberland and 15 more | 3 hr |
| Jun 25, 8:02 PM EDT | Tornado Warning | CTP | Lancaster | 28 min |
| Jun 25, 8:29 PM EDT | Tornado Warning | CTP | Lancaster | 31 min |
| Jun 25, 8:50 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 40 min |
| Jun 25, 9:03 PM EDT | Severe Thunderstorm Warning | CTP | York | 57 min |
| Jun 25, 9:05 PM EDT | Tornado Warning | CTP | Lancaster | 25 min |
| Jun 25, 9:30 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 60 min |
| Jun 25, 9:40 PM EDT | Flash Flood Warning | CTP | Tioga | 3 hr |
| Jun 25, 10:30 PM EDT | Flash Flood Warning | CTP | Lancaster, Lebanon | 4 hr |
| Jun 25, 10:58 PM EDT | Flash Flood Warning | PHI | Berks | 3 hr |
| Jun 25, 11:25 PM EDT | Flash Flood Warning | BGM | Bradford, Susquehanna | 3 hr |
| Jun 25, 11:40 PM EDT | Flash Flood Warning | CTP | York | 2 hr |
| Jun 27, 2:15 PM EDT | Flash Flood Warning | PBZ | Fayette | 3 hr |
| Jun 27, 3:00 PM EDT | Severe Thunderstorm Watch | SPC | Bucks, Chester, Delaware, Lancaster, Montgomery, Philadelphia | 5 hr |
| Jun 29, 12:51 PM EDT | Tornado Warning | CTP | Dauphin | 39 min |
| Jun 29, 1:22 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 53 min |
| Jun 29, 2:07 PM EDT | Severe Thunderstorm Warning | CTP | Adams, York | 38 min |
| Jun 29, 5:17 PM EDT | Severe Thunderstorm Warning | BGM | Pike | 13 min |
| Jun 29, 6:49 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 41 min |
| Jun 29, 7:03 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 57 min |
| Jun 29, 7:20 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 55 min |
| Jun 29, 7:30 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 75 min |
| Jul 9, 4:36 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 24 min |
| Jul 10, 12:30 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Bedford, Fayette, Franklin, Fulton, Greene and 3 more | 6 hr |
| Jul 10, 8:51 PM EDT | Flash Flood Warning | PBZ | Fayette | 114 min |
| Jul 14, 9:13 AM EDT | Severe Thunderstorm Warning | CLE | Erie | 62 min |
| Jul 14, 1:00 PM EDT | Severe Thunderstorm Watch | SPC | Beaver, Butler, Crawford, Erie, Lawrence, Mercer and 1 more | 6 hr |
| Jul 14, 2:11 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 64 min |
| Jul 14, 2:34 PM EDT | Severe Thunderstorm Warning | CTP | Franklin, Fulton | 56 min |
| Jul 14, 3:57 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Indiana | 63 min |
| Jul 14, 4:15 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Bedford, Cambria, Clearfield, Fayette and 5 more | 6 hr |
| Jul 14, 4:18 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 57 min |
| Jul 14, 4:45 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Blair, Centre, Clinton, Columbia, Cumberland and 14 more | 5 hr |
| Jul 14, 4:49 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 56 min |
| Jul 14, 4:50 PM EDT | Flash Flood Warning | PBZ | Armstrong, Indiana, Westmoreland | 3 hr |
| Jul 14, 4:57 PM EDT | Severe Thunderstorm Warning | CTP | Snyder | 63 min |
| Jul 14, 5:05 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 55 min |
| Jul 14, 6:09 PM EDT | Flash Flood Warning | CTP | Lancaster, York | 3 hr |
| Jul 14, 6:10 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 50 min |
| Jul 14, 6:18 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 27 min |
| Jul 14, 8:20 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 55 min |
| Jul 14, 9:15 PM EDT | Flash Flood Warning | CTP | Lancaster, York | 3 hr |
| Jul 15, 3:28 PM EDT | Flash Flood Warning | CTP | Lancaster, York | 3 hr |
| Jul 16, 2:40 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 35 min |
| Jul 16, 3:27 PM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 33 min |
| Jul 16, 3:39 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 36 min |
| Jul 16, 5:54 PM EDT | Flash Flood Warning | BGM | Pike | 2 hr |
| Jul 16, 5:56 PM EDT | Flash Flood Warning | PHI | Northampton | 2 hr |
| Jul 16, 6:04 PM EDT | Severe Thunderstorm Warning | CTP | Potter | 26 min |
| Jul 16, 7:47 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 28 min |
| Jul 21, 12:45 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 60 min |
| Jul 21, 2:47 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Lycoming, Montour | 58 min |
| Jul 21, 2:55 PM EDT | Tornado Warning | CTP | Columbia | 35 min |
| Jul 21, 4:23 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna, Wayne | 52 min |
| Jul 21, 5:21 PM EDT | Tornado Warning | CTP | Columbia | 24 min |
| Jul 21, 5:42 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 63 min |
| Jul 21, 5:44 PM EDT | Severe Thunderstorm Warning | CTP | Columbia | 16 min |
| Jul 28, 2:14 PM EDT | Flash Flood Warning | PBZ | Allegheny, Beaver | 3 hr |
| Jul 28, 2:23 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 67 min |
| Jul 28, 2:35 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 55 min |
| Jul 28, 2:52 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Jul 28, 3:05 PM EDT | Flash Flood Warning | PBZ | Washington | 3 hr |
| Jul 28, 3:09 PM EDT | Flash Flood Warning | PBZ | Armstrong | 3 hr |
| Jul 28, 3:21 PM EDT | Flash Flood Warning | PBZ | Indiana | 3 hr |
| Jul 28, 3:55 PM EDT | Flash Flood Warning | CTP | Huntingdon | 2 hr |
| Jul 28, 4:05 PM EDT | Severe Thunderstorm Warning | CTP | Bedford | 55 min |
| Jul 28, 5:10 PM EDT | Flash Flood Warning | CTP | Bedford | 3 hr |
| Jul 28, 5:21 PM EDT | Flash Flood Warning | PBZ | Allegheny, Washington | 2 hr |
| Jul 28, 5:37 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Franklin | 53 min |
| Jul 28, 8:04 PM EDT | Flash Flood Warning | CLE | Crawford | 116 min |
| Jul 30, 1:20 PM EDT | Flash Flood Warning | BGM | Susquehanna, Wyoming | 3 hr |
| Jul 30, 3:50 PM EDT | Flash Flood Warning | BGM | Lackawanna | 3 hr |
| Jul 30, 4:04 PM EDT | Flash Flood Warning | BGM | Wyoming | 116 min |
| Jul 30, 4:50 PM EDT | Flash Flood Warning | CTP | Cumberland, Perry | 3 hr |
| Jul 30, 5:09 PM EDT | Flash Flood Warning | CTP | Somerset | 3 hr |
| Jul 30, 6:08 PM EDT | Flash Flood Warning | BGM | Luzerne | 3 hr |
| Jul 30, 6:45 PM EDT | Flash Flood Warning | PHI | Bucks | 2 hr |
| Jul 30, 6:46 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 59 min |
| Jul 30, 7:36 PM EDT | Flash Flood Warning | PBZ | Allegheny | 2 hr |
| Jul 30, 7:43 PM EDT | Flash Flood Warning | PBZ | Greene | 3 hr |
| Jul 30, 8:25 PM EDT | Flash Flood Warning | CTP | Columbia | 3 hr |
| Jul 30, 8:50 PM EDT | Flash Flood Warning | PHI | Bucks | 3 hr |
| Jul 30, 9:04 PM EDT | Flash Flood Warning | PHI | Carbon | 116 min |
| Jul 31, 1:50 AM EDT | Flash Flood Warning | CTP | Columbia | 3 hr |
| Jul 31, 1:58 PM EDT | Flash Flood Warning | CTP | Clearfield | 4 hr |
| Jul 31, 2:08 PM EDT | Flash Flood Warning | CTP | Somerset | 3 hr |
| Jul 31, 2:54 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Butler | 66 min |
| Jul 31, 3:36 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 39 min |
| Jul 31, 3:39 PM EDT | Flash Flood Warning | BGM | Wayne | 3 hr |
| Jul 31, 3:41 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Westmoreland | 64 min |
| Jul 31, 3:44 PM EDT | Flash Flood Warning | CTP | McKean | 3 hr |
| Jul 31, 3:46 PM EDT | Flash Flood Warning | PBZ | Indiana, Westmoreland | 3 hr |
| Jul 31, 3:58 PM EDT | Flash Flood Warning | PBZ | Jefferson | 3 hr |
| Jul 31, 4:05 PM EDT | Flash Flood Warning | PBZ | Fayette | 3 hr |
| Jul 31, 4:40 PM EDT | Flash Flood Warning | CTP | Elk | 3 hr |
| Jul 31, 6:45 PM EDT | Flash Flood Warning | CTP | McKean | 2 hr |
| Jul 31, 6:55 PM EDT | Flash Flood Warning | PBZ | Jefferson | 3 hr |
| Jul 31, 7:40 PM EDT | Flash Flood Warning | CTP | Clearfield | 110 min |
| Jul 31, 8:33 PM EDT | Flash Flood Warning | CLE | Erie | 3 hr |
| Jul 31, 8:47 PM EDT | Flash Flood Warning | PBZ | Allegheny | 118 min |
| Jul 31, 9:17 PM EDT | Flash Flood Warning | CLE | Crawford | 118 min |
| Aug 1, 4:11 PM EDT | Tornado Warning | CTP | Lycoming, Sullivan | 34 min |
| Aug 1, 4:44 PM EDT | Tornado Warning | CTP | Sullivan | 31 min |
| Aug 1, 4:50 PM EDT | Severe Thunderstorm Warning | CTP | Northumberland, Snyder | 55 min |
| Aug 1, 7:13 PM EDT | Flash Flood Warning | PHI | Berks, Lehigh | 2 hr |
| Aug 2, 12:52 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 53 min |
| Aug 2, 1:00 PM EDT | Severe Thunderstorm Watch | SPC | Crawford, Erie, Forest, McKean, Mercer, Venango and 1 more | 5 hr |
| Aug 2, 1:01 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 59 min |
| Aug 2, 1:25 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 35 min |
| Aug 2, 1:39 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 51 min |
| Aug 2, 1:51 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 69 min |
| Aug 2, 1:56 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 49 min |
| Aug 2, 2:51 PM EDT | Flash Flood Warning | CLE | Crawford | 114 min |
| Aug 2, 2:51 PM EDT | Severe Thunderstorm Warning | PBZ | Venango | 39 min |
| Aug 2, 2:56 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 64 min |
| Aug 2, 3:02 PM EDT | Severe Thunderstorm Warning | CTP | McKean, Warren | 58 min |
| Aug 2, 3:23 PM EDT | Flash Flood Warning | PBZ | Venango | 4 hr |
| Aug 2, 3:28 PM EDT | Severe Thunderstorm Warning | PBZ | Venango | 62 min |
| Aug 2, 3:50 PM EDT | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Aug 2, 4:01 PM EDT | Severe Thunderstorm Warning | CTP | Potter | 74 min |
| Aug 2, 4:07 PM EDT | Severe Thunderstorm Warning | CTP | McKean | 38 min |
| Aug 2, 4:12 PM EDT | Flash Flood Warning | PBZ | Forest | 3 hr |
| Aug 2, 4:19 PM EDT | Tornado Warning | CLE | Crawford | 41 min |
| Aug 2, 4:32 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 58 min |
| Aug 2, 4:38 PM EDT | Severe Thunderstorm Warning | CTP | Columbia | 67 min |
| Aug 2, 4:40 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 65 min |
| Aug 2, 4:51 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 54 min |
| Aug 2, 5:00 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 45 min |
| Aug 2, 5:14 PM EDT | Flash Flood Warning | CTP | Columbia | 3 hr |
| Aug 2, 5:37 PM EDT | Flash Flood Warning | CTP | Clearfield | 3 hr |
| Aug 2, 5:44 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 46 min |
| Aug 2, 5:54 PM EDT | Severe Thunderstorm Warning | PBZ | Venango | 66 min |
| Aug 2, 6:02 PM EDT | Tornado Warning | PBZ | Venango | 43 min |
| Aug 2, 6:20 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 25 min |
| Aug 2, 6:28 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 62 min |
| Aug 2, 6:38 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 67 min |
| Aug 2, 6:41 PM EDT | Flash Flood Warning | CLE | Crawford | 2 hr |
| Aug 2, 6:41 PM EDT | Flash Flood Warning | CTP | Clinton | 3 hr |
| Aug 2, 6:43 PM EDT | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Aug 2, 6:44 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 61 min |
| Aug 2, 6:56 PM EDT | Severe Thunderstorm Warning | PBZ | Venango | 64 min |
| Aug 2, 7:02 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 58 min |
| Aug 2, 7:14 PM EDT | Flash Flood Warning | PBZ | Forest, Venango | 3 hr |
| Aug 2, 9:03 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 42 min |
| Aug 2, 9:11 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 49 min |
| Aug 2, 9:28 PM EDT | Flash Flood Warning | CLE | Erie | 3 hr |
| Aug 2, 10:01 PM EDT | Flash Flood Warning | CLE | Crawford | 3 hr |
| Aug 2, 11:21 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 54 min |
| Aug 3, 12:23 AM EDT | Flash Flood Warning | CLE | Erie | 3 hr |
| Aug 3, 12:55 AM EDT | Severe Thunderstorm Warning | CLE | Erie | 50 min |
| Aug 3, 12:58 AM EDT | Flash Flood Warning | CLE | Crawford | 3 hr |
| Aug 3, 12:59 PM EDT | Flash Flood Warning | CTP | Clearfield | 3 hr |
| Aug 6, 8:19 AM EDT | Flash Flood Warning | PBZ | Allegheny, Beaver, Fayette, Greene, Washington, Westmoreland | 3 hr |
| Aug 6, 10:47 AM EDT | Flash Flood Warning | PBZ | Fayette, Greene | 3 hr |
| Aug 6, 10:59 AM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Aug 6, 11:50 AM EDT | Flash Flood Warning | PBZ | Washington | 3 hr |
| Aug 6, 11:57 AM EDT | Flash Flood Warning | CTP | Somerset | 3 hr |
| Aug 6, 1:09 PM EDT | Flash Flood Warning | PBZ | Allegheny | 111 min |
| Aug 6, 1:42 PM EDT | Flash Flood Warning | PBZ | Fayette, Greene, Westmoreland | 4 hr |
| Aug 6, 3:00 PM EDT | Flash Flood Warning | CTP | Somerset | 3 hr |
| Aug 6, 9:30 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Cambria, Clarion and 13 more | 6 hr |
| Aug 6, 10:03 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 42 min |
| Aug 6, 10:05 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 55 min |
| Aug 6, 10:11 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 64 min |
| Aug 6, 10:28 PM EDT | Flash Flood Warning | PBZ | Allegheny | 4 hr |
| Aug 6, 10:37 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 53 min |
| Aug 6, 10:39 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Aug 7, 12:09 AM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 66 min |
| Aug 7, 12:09 AM EDT | Severe Thunderstorm Warning | PBZ | Lawrence | 66 min |
| Aug 7, 12:16 AM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 59 min |
| Aug 7, 12:21 AM EDT | Severe Thunderstorm Warning | CLE | Crawford | 54 min |
| Aug 7, 12:36 AM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Butler | 54 min |
| Aug 7, 1:27 AM EDT | Flash Flood Warning | PBZ | Allegheny, Westmoreland | 4 hr |
| Aug 7, 1:30 AM EDT | Flash Flood Warning | PBZ | Washington | 4 hr |
| Aug 7, 3:25 AM EDT | Flash Flood Warning | CTP | Cambria, Somerset | 4 hr |
| Aug 7, 5:09 AM EDT | Flash Flood Warning | PBZ | Allegheny, Washington, Westmoreland | 3 hr |
| Aug 7, 7:58 AM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Aug 7, 6:42 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery, Philadelphia | 18 min |
| Aug 9, 1:00 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Cumberland, Fayette, Franklin, Fulton and 4 more | 6 hr |
| Aug 9, 5:15 PM EDT | Severe Thunderstorm Watch | SPC | Cameron, Crawford, Elk, Erie, Forest, McKean and 3 more | 6 hr |
| Aug 9, 6:46 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 59 min |
| Aug 9, 7:12 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 63 min |
| Aug 9, 8:00 PM EDT | Severe Thunderstorm Watch | SPC | Bradford, Lackawanna, Lycoming, Sullivan, Susquehanna, Tioga and 2 more | 5 hr |
| Aug 15, 10:00 PM EDT | Severe Thunderstorm Watch | SPC | Beaver, Butler, Clarion, Crawford, Elk, Erie and 8 more | 5 hr |
| Aug 15, 10:43 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 62 min |
| Aug 15, 11:07 PM EDT | Severe Thunderstorm Warning | CTP | McKean | 53 min |
| Aug 15, 11:11 PM EDT | Severe Thunderstorm Warning | CTP | Elk | 64 min |
| Aug 16, 12:16 AM EDT | Severe Thunderstorm Warning | CTP | Cameron, Elk | 59 min |
| Aug 16, 12:23 AM EDT | Tornado Warning | CTP | Cameron, Elk | 37 min |
| Aug 16, 12:50 AM EDT | Severe Thunderstorm Warning | CTP | Centre, Clinton | 55 min |
| Aug 16, 12:55 AM EDT | Severe Thunderstorm Warning | CTP | Cameron | 35 min |
| Aug 16, 2:51 AM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Northumberland, Schuylkill | 54 min |
| Aug 23, 10:41 PM EDT | Flash Flood Warning | PBZ | Lawrence | 3 hr |
| Aug 23, 11:12 PM EDT | Flash Flood Warning | PBZ | Butler | 3 hr |
| Aug 24, 3:27 AM EDT | Severe Thunderstorm Warning | CTP | Snyder | 63 min |
| Aug 27, 1:43 PM EDT | Severe Thunderstorm Warning | CTP | Somerset | 62 min |
| Aug 27, 2:18 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 57 min |
| Aug 27, 5:28 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 92 min |
| Aug 27, 6:27 PM EDT | Flash Flood Warning | CTP | Adams | 3 hr |
| Aug 27, 7:48 PM EDT | Flash Flood Warning | CTP | Cumberland | 117 min |
| Aug 27, 8:59 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Dauphin, York | 61 min |
| Aug 27, 8:59 PM EDT | Severe Thunderstorm Warning | CTP | Lebanon | 61 min |
| Aug 27, 9:12 PM EDT | Severe Thunderstorm Warning | CTP | Perry | 93 min |
| Aug 27, 9:33 PM EDT | Flash Flood Warning | CTP | Adams, Cumberland | 117 min |
| Aug 27, 10:05 PM EDT | Severe Thunderstorm Warning | CTP | Juniata, Snyder | 40 min |
| Aug 27, 10:18 PM EDT | Severe Thunderstorm Warning | CTP | Mifflin, Union | 42 min |
| Aug 27, 11:02 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 58 min |
| Sep 1, 5:00 PM EDT | Flash Flood Warning | CTP | Cumberland, Dauphin, Perry | 2 hr |
| Sep 1, 6:13 PM EDT | Flash Flood Warning | CTP | Adams, York | 3 hr |
| Sep 1, 9:05 PM EDT | Flash Flood Warning | CTP | Adams | 85 min |
| Sep 2, 6:15 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Sep 3, 2:12 PM EDT | Flash Flood Warning | CTP | Lancaster | 3 hr |
| Sep 3, 5:20 PM EDT | Flash Flood Warning | PHI | Philadelphia | 100 min |
| Sep 12, 3:08 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 52 min |
| Sep 12, 4:27 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 33 min |
| Sep 14, 8:02 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Franklin | 58 min |
| Sep 14, 10:08 PM EDT | Flash Flood Warning | CTP | York | 3 hr |
| Sep 14, 10:17 PM EDT | Flash Flood Warning | CTP | Lancaster | 3 hr |
| Sep 19, 8:45 PM EDT | Flash Flood Warning | PHI | Bucks | 3 hr |
| Sep 20, 7:45 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Cameron, Clarion and 16 more | 5 hr |
| Sep 20, 8:40 PM EDT | Severe Thunderstorm Warning | PBZ | Lawrence, Mercer | 65 min |
| Sep 20, 9:19 PM EDT | Severe Thunderstorm Warning | PBZ | Venango | 41 min |
| Sep 20, 10:48 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 57 min |
| Sep 20, 11:25 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 65 min |
| Sep 20, 11:42 PM EDT | Severe Thunderstorm Warning | PBZ | Venango | 48 min |
| Sep 24, 12:10 AM EDT | Flash Flood Warning | PBZ | Jefferson | 3 hr |
| Oct 4, 4:44 AM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 61 min |
| Oct 4, 5:10 AM EDT | Severe Thunderstorm Warning | CTP | Warren | 50 min |
| Oct 4, 5:53 AM EDT | Severe Thunderstorm Warning | CTP | McKean, Warren | 52 min |
| Oct 4, 8:11 AM EDT | Severe Thunderstorm Warning | CTP | Warren | 64 min |
| Oct 4, 8:44 AM EDT | Severe Thunderstorm Warning | CTP | McKean | 31 min |
| Oct 4, 8:54 AM EDT | Severe Thunderstorm Warning | CTP | Elk | 36 min |
| Oct 4, 9:00 AM EDT | Severe Thunderstorm Warning | CTP | McKean, Potter | 45 min |
| Oct 4, 9:30 AM EDT | Severe Thunderstorm Warning | BGM | Bradford | 45 min |
| Oct 4, 5:07 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Schuylkill | 53 min |
| Oct 4, 5:07 PM EDT | Severe Thunderstorm Warning | CTP | Perry | 53 min |
| Oct 4, 5:27 PM EDT | Severe Thunderstorm Warning | CTP | Lebanon | 63 min |
| Oct 4, 5:42 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 33 min |
| Oct 4, 6:24 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 36 min |
| Oct 4, 6:31 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, Lebanon | 59 min |
| Oct 4, 6:34 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh | 41 min |
| Oct 4, 6:40 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 35 min |
| Oct 4, 7:07 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 53 min |
| Oct 4, 7:19 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 56 min |
| Oct 4, 7:24 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 51 min |
| Oct 4, 7:57 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 33 min |
| Oct 5, 8:25 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 50 min |
| Oct 5, 8:49 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 41 min |
| Oct 5, 9:09 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 51 min |
| Oct 5, 9:58 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 47 min |
| Oct 6, 12:07 AM EDT | Severe Thunderstorm Warning | BGM | Susquehanna, Wayne | 53 min |
| Nov 9, 7:30 PM EST | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 8 more | 5 hr |
| Nov 9, 9:00 PM EST | Severe Thunderstorm Watch | SPC | Allegheny, Fayette, Greene, Somerset, Washington, Westmoreland | 3 hr |
| Nov 9, 9:52 PM EST | Severe Thunderstorm Warning | PBZ | Fayette | 53 min |
| Nov 9, 10:11 PM EST | Severe Thunderstorm Warning | PBZ | Westmoreland | 64 min |
| Nov 9, 10:15 PM EST | Severe Thunderstorm Warning | CTP | Somerset | 60 min |
| Nov 9, 10:22 PM EST | Severe Thunderstorm Warning | PBZ | Allegheny | 53 min |
| Nov 9, 10:25 PM EST | Severe Thunderstorm Warning | PBZ | Armstrong, Indiana | 65 min |
| Nov 9, 10:45 PM EST | Severe Thunderstorm Warning | CTP | Bedford, Cambria | 60 min |
| Nov 9, 11:58 PM EST | Severe Thunderstorm Warning | CTP | Franklin | 62 min |
| Dec 17, 2:15 AM EST | Tornado Watch | SPC | Chester, Delaware, Philadelphia | 5 hr |
| Dec 17, 6:06 AM EST | Flash Flood Warning | PHI | Chester | 114 min |
| Dec 17, 6:13 AM EST | Severe Thunderstorm Warning | PHI | Chester | 32 min |
| Dec 17, 6:23 AM EST | Flash Flood Warning | CTP | Columbia, Dauphin, Lebanon, Montour, Northumberland, Schuylkill | 3 hr |
| Dec 17, 6:50 AM EST | Flash Flood Warning | PHI | Bucks, Montgomery | 3 hr |
| Dec 17, 7:00 AM EST | Tornado Watch | SPC | Chester, Delaware, Philadelphia | 5 hr |
| Dec 17, 7:03 AM EST | Flash Flood Warning | PHI | Chester | 3 hr |
| Dec 17, 7:29 AM EST | Flash Flood Warning | PHI | Delaware | 3 hr |
| Dec 17, 9:33 AM EST | Flash Flood Warning | PHI | Chester | 117 min |
| Dec 17, 9:52 AM EST | Flash Flood Warning | PHI | Carbon, Monroe | 3 hr |
| Dec 17, 10:00 AM EST | Flash Flood Warning | PHI | Chester | 3 hr |
| Dec 17, 10:00 AM EST | Flash Flood Warning | PHI | Delaware | 3 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 | 478 |
| Tornado Warning | 27 |
| Severe Thunderstorm Watch | 38 |
| Tornado Watch | 2 |
| Flooding | |
| Flash Flood Warning | 132 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Lancaster County37
- Allegheny County37
- Westmoreland County36
- Crawford County35
- York County33
- Lycoming County31
- Dauphin County29
- Columbia County29
- Bradford County29
- Adams County28
- Erie County27
- Venango County27
- Fayette County27
- Clearfield County26
- Chester County26
- Northumberland County26
- Franklin County26
- Mercer County26
- Washington County26
- Somerset County25
- Susquehanna County25
- Berks County25
- Cumberland County25
- Lebanon County25
- Elk County24
- McKean County24
- Warren County23
- Centre County23
- Clinton County23
- Snyder County23
- Perry County23
- Schuylkill County23
- Indiana County23
- Sullivan County22
- Bucks County22
- Wayne County21
- Greene County21
- Armstrong County21
- Cameron County20
- Potter County20
27 more counties
- Beaver County20
- Jefferson County20
- Lackawanna County19
- Cambria County19
- Delaware County19
- Lehigh County19
- Bedford County19
- Juniata County19
- Union County19
- Butler County19
- Luzerne County19
- Pike County18
- Montgomery County18
- Fulton County18
- Montour County18
- Northampton County18
- Philadelphia County18
- Lawrence County18
- Huntingdon County17
- Mifflin County17
- Clarion County17
- Tioga County16
- Carbon County16
- Monroe County16
- Wyoming County16
- Blair County14
- Forest County11
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive19992001
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.