Weather alerts in Pennsylvania, 2003
822 weather alerts in 2003, 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 2003. Tap one for its archive.
- Alerts
- 822
- Warnings
- 643
- Watches
- 46
- Advisories
- 0
- Busiest month
- July306 alerts
- Busiest day
- July 21, 200367 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 1, 7:58 AM EST | Mesoscale Discussion | SPC | Lawrence, Mercer | 4 hr |
| Jan 1, 12:02 PM EST | Mesoscale Discussion | SPC | Bradford, Erie, McKean, Potter, Susquehanna, Tioga and 1 more | 6 hr |
| Jan 3, 9:55 AM EST | Mesoscale Discussion | SPC | Berks, Lancaster, Lehigh, Northampton, York | 4 hr |
| Jan 3, 10:28 AM EST | Mesoscale Discussion | SPC | Bradford, Lackawanna, Luzerne, Lycoming, Pike, Sullivan and 4 more | 4 hr |
| Jan 3, 1:32 PM EST | Mesoscale Discussion | SPC | Susquehanna | 7 hr |
| Feb 14, 10:18 PM EST | Mesoscale Discussion | SPC | Greene | 6 hr |
| Feb 16, 12:12 AM EST | Mesoscale Discussion | SPC | Fayette, Greene, Somerset, Washington | 5 hr |
| Feb 16, 11:45 AM EST | Mesoscale Discussion | SPC | Adams, Delaware | 6 hr |
| Feb 16, 6:41 PM EST | Mesoscale Discussion | SPC | Allegheny, Beaver, Greene, Washington | 3 hr |
| Feb 16, 7:04 PM EST | Mesoscale Discussion | SPC | Adams, Bedford, Berks, Blair, Chester, Cumberland and 14 more | 4 hr |
| Feb 16, 11:19 PM EST | Mesoscale Discussion | SPC | Adams, Allegheny, Armstrong, Bedford, Berks, Blair and 27 more | 6 hr |
| Feb 22, 1:59 PM EST | Flash Flood Warning | PHI | Delaware | 4 hr |
| Feb 23, 1:37 AM EST | Flash Flood Warning | PBZ | Fayette | 3 hr |
| Feb 23, 3:41 AM EST | Flash Flood Warning | PBZ | Greene | 3 hr |
| Feb 23, 4:06 AM EST | Flash Flood Warning | PBZ | Washington | 6 hr |
| Feb 23, 12:01 PM EST | Flash Flood Warning | PBZ | Washington | 6 hr |
| Feb 23, 1:19 PM EST | Flash Flood Warning | PBZ | Greene | 5 hr |
| Feb 23, 6:01 PM EST | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Feb 27, 3:19 PM EST | Mesoscale Discussion | SPC | Chester | 6 hr |
| Mar 5, 9:36 PM EST | Mesoscale Discussion | SPC | Greene, Washington | 6 hr |
| Mar 6, 5:18 AM EST | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Bedford, Blair, Butler and 9 more | 4 hr |
| Mar 6, 7:13 AM EST | Mesoscale Discussion | SPC | Bradford, Carbon, Columbia, Lackawanna, Luzerne, Lycoming and 8 more | 7 hr |
| Mar 9, 5:29 PM EST | Flash Flood Warning | CTP | Lancaster | 3 hr |
| Mar 13, 8:39 AM EST | Mesoscale Discussion | SPC | Bradford, Crawford, Erie, Forest, McKean, Potter and 3 more | 3 hr |
| Mar 13, 12:23 PM EST | Mesoscale Discussion | SPC | Bradford, Carbon, Columbia, Lackawanna, Luzerne, Lycoming and 9 more | 4 hr |
| Mar 18, 10:40 AM EST | Flash Flood Warning | CLE | Crawford, Erie | 2 min |
| Mar 20, 10:40 AM EST | Flash Flood Warning | CTP | Cambria, Somerset | 15 min |
| Mar 21, 12:18 PM EST | Mesoscale Discussion | SPC | Bedford, Blair, Cambria, Cameron, Centre, Clearfield and 9 more | 117 min |
| Mar 21, 2:05 PM EST | Mesoscale Discussion | SPC | York | 2 hr |
| Mar 21, 4:21 PM EST | Severe Thunderstorm Warning | PHI | Bucks | 24 min |
| Mar 29, 12:01 PM EST | Mesoscale Discussion | SPC | Adams, Cumberland, Dauphin, Franklin, Lancaster, Lebanon and 2 more | 89 min |
| Mar 30, 10:10 AM EST | Mesoscale Discussion | SPC | Adams, Bedford, Blair, Centre, Clinton, Cumberland and 9 more | 3 hr |
| Apr 4, 9:02 PM EST | Severe Thunderstorm Warning | PBZ | Greene, Washington | 28 min |
| Apr 4, 11:38 PM EST | Mesoscale Discussion | SPC | Beaver, Washington | 97 min |
| Apr 5, 12:05 AM EST | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Clearfield, Greene and 4 more | 5 hr |
| Apr 5, 2:34 AM EST | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Clearfield, Greene and 4 more | 86 min |
| Apr 7, 4:56 AM EDT | Mesoscale Discussion | SPC | Blair, Cambria, Cameron, Centre, Clarion, Clearfield and 13 more | 8 hr |
| Apr 7, 4:41 PM EDT | Mesoscale Discussion | SPC | Carbon, Columbia, Lehigh, Luzerne, Lycoming, Monroe and 6 more | 2 hr |
| May 1, 12:41 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Bradford, Butler, Cameron and 16 more | 3 hr |
| May 1, 1:30 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Cameron, Clarion and 15 more | 6 hr |
| May 1, 4:10 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Cameron, Clarion and 13 more | 95 min |
| May 1, 4:54 PM EDT | Severe Thunderstorm Warning | CTP | Franklin, Fulton, Huntingdon | 66 min |
| May 1, 6:02 PM EDT | Mesoscale Discussion | SPC | Adams, Bedford, Berks, Blair, Cumberland, Dauphin and 13 more | 3 hr |
| May 1, 6:29 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland | 61 min |
| May 1, 6:40 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Dauphin, Perry | 50 min |
| May 1, 7:45 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 60 min |
| May 1, 9:05 PM EDT | Flash Flood Warning | BGM | Bradford | 3 hr |
| May 1, 9:20 PM EDT | Flash Flood Warning | BGM | Susquehanna | 3 hr |
| May 2, 12:43 PM EDT | Mesoscale Discussion | SPC | Bucks, Carbon, Delaware, Lehigh, Monroe, Montgomery and 3 more | 2 hr |
| May 6, 3:49 PM EDT | Mesoscale Discussion | SPC | Cameron, Centre, Clarion, Clearfield, Clinton, Elk and 6 more | 116 min |
| May 6, 4:28 PM EDT | Severe Thunderstorm Warning | CTP | Elk | 62 min |
| May 6, 5:40 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 50 min |
| May 6, 5:52 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 53 min |
| May 6, 5:58 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 62 min |
| May 6, 7:06 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 54 min |
| May 7, 12:49 PM EDT | Mesoscale Discussion | SPC | Adams, Armstrong, Bedford, Berks, Blair, Cambria and 29 more | 116 min |
| May 7, 1:20 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Armstrong, Bedford, Blair, Cambria, Centre and 17 more | 6 hr |
| May 7, 3:21 PM EDT | Mesoscale Discussion | SPC | Adams, Blair, Centre, Clearfield, Clinton, Cumberland and 10 more | 114 min |
| May 7, 3:52 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland | 53 min |
| May 7, 6:07 PM EDT | Mesoscale Discussion | SPC | Berks, Chester, Columbia, Dauphin, Lancaster, Lebanon and 3 more | 53 min |
| May 8, 6:09 AM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 66 min |
| May 8, 12:55 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Fayette, Franklin, Fulton, Greene and 2 more | 5 hr |
| May 8, 2:48 PM EDT | Mesoscale Discussion | SPC | Adams, Bedford, Fayette, Franklin, Fulton, Greene and 2 more | 117 min |
| May 8, 4:46 PM EDT | Mesoscale Discussion | SPC | Fayette, Somerset, Washington | 59 min |
| May 9, 11:04 AM EDT | Flash Flood Warning | PBZ | Greene | 3 hr |
| May 10, 1:42 AM EDT | Severe Thunderstorm Warning | CLE | Crawford | 48 min |
| May 10, 2:21 AM EDT | Severe Thunderstorm Warning | PBZ | Lawrence, Mercer | 54 min |
| May 10, 2:56 AM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Butler, Lawrence | 64 min |
| May 10, 3:33 AM EDT | Severe Thunderstorm Warning | CLE | Erie | 42 min |
| May 10, 3:48 AM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Indiana | 57 min |
| May 10, 4:12 AM EDT | Severe Thunderstorm Warning | CTP | Cambria | 63 min |
| May 10, 4:33 AM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Bedford, Blair, Butler and 14 more | 87 min |
| May 10, 4:37 AM EDT | Severe Thunderstorm Warning | CTP | Bedford, Blair | 53 min |
| May 10, 6:33 AM EDT | Severe Thunderstorm Warning | PBZ | Greene, Washington | 57 min |
| May 10, 7:12 AM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Lawrence | 63 min |
| May 10, 7:17 AM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 58 min |
| May 10, 7:28 AM EDT | Flash Flood Warning | PBZ | Greene | 4 hr |
| May 10, 7:37 AM EDT | Flash Flood Warning | PBZ | Fayette | 4 hr |
| May 10, 7:43 AM EDT | Flash Flood Warning | PBZ | Beaver | 4 hr |
| May 10, 7:47 AM EDT | Flash Flood Warning | PBZ | Washington | 4 hr |
| May 10, 8:06 AM EDT | Flash Flood Warning | PBZ | Allegheny, Westmoreland | 3 hr |
| May 10, 9:18 AM EDT | Flash Flood Warning | CTP | Somerset | 3 hr |
| May 10, 8:05 PM EDT | Flash Flood Warning | PBZ | Washington | 115 min |
| May 11, 10:07 AM EDT | Mesoscale Discussion | SPC | Bradford, Cameron, Centre, Clinton, Columbia, Luzerne and 10 more | 113 min |
| May 11, 10:30 AM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Cambria, Cameron and 17 more | 2 hr |
| May 11, 11:45 AM EDT | Tornado Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Cambria, Cameron and 18 more | 5 hr |
| May 11, 12:32 PM EDT | Mesoscale Discussion | SPC | Adams, Blair, Bradford, Centre, Clinton, Columbia and 21 more | 118 min |
| May 11, 1:50 PM EDT | Tornado Watch | SPC | Adams, Bedford, Blair, Bradford, Centre, Clinton and 24 more | 5 hr |
| May 11, 2:52 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Cambria, Cameron and 18 more | 113 min |
| May 11, 3:36 PM EDT | Severe Thunderstorm Warning | CTP | Clinton, Lycoming | 54 min |
| May 11, 3:49 PM EDT | Tornado Warning | CTP | Lycoming | 41 min |
| May 11, 3:54 PM EDT | Mesoscale Discussion | SPC | Adams, Bedford, Blair, Bradford, Centre, Clinton and 24 more | 2 hr |
| May 11, 4:30 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 15 min |
| May 11, 5:58 PM EDT | Severe Thunderstorm Warning | CTP | Sullivan | 47 min |
| May 11, 6:15 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne, Wyoming | 60 min |
| May 11, 6:30 PM EDT | Tornado Warning | BGM | Luzerne, Wyoming | 45 min |
| May 11, 7:15 PM EDT | Tornado Warning | BGM | Lackawanna, Wyoming | 45 min |
| May 11, 7:17 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 58 min |
| May 11, 7:35 PM EDT | Tornado Warning | BGM | Luzerne | 40 min |
| May 11, 8:19 PM EDT | Severe Thunderstorm Warning | PHI | Carbon | 56 min |
| May 23, 1:47 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 11 more | 88 min |
| May 23, 3:00 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 8 more | 6 hr |
| May 23, 4:41 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 7 more | 94 min |
| May 23, 6:35 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Greene and 3 more | 115 min |
| May 31, 1:06 PM EDT | Mesoscale Discussion | SPC | Adams, Franklin | 114 min |
| May 31, 1:40 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bucks, Chester, Cumberland, Dauphin and 11 more | 5 hr |
| May 31, 3:58 PM EDT | Mesoscale Discussion | SPC | Adams, Chester, Delaware, Lancaster, York | 2 hr |
| Jun 1, 1:50 AM EDT | Flash Flood Warning | CTP | Schuylkill | 3 hr |
| Jun 8, 4:15 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Beaver, Butler, Clarion, Crawford, Forest and 5 more | 5 hr |
| Jun 8, 6:29 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Cambria, Cameron and 17 more | 91 min |
| Jun 8, 7:14 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 61 min |
| Jun 8, 7:27 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 63 min |
| Jun 8, 7:36 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 24 min |
| Jun 8, 7:42 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 33 min |
| Jun 8, 7:45 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 60 min |
| Jun 8, 8:02 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 58 min |
| Jun 8, 8:04 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 56 min |
| Jun 8, 8:29 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 61 min |
| Jun 8, 8:31 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 44 min |
| Jun 8, 8:40 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 50 min |
| Jun 8, 9:02 PM EDT | Severe Thunderstorm Warning | CTP | Cambria, Clearfield | 58 min |
| Jun 12, 2:16 AM EDT | Flash Flood Warning | PHI | Carbon | 119 min |
| Jun 12, 2:37 AM EDT | Flash Flood Warning | PHI | Monroe | 3 hr |
| Jun 12, 12:02 PM EDT | Mesoscale Discussion | SPC | Adams, Chester, Cumberland, Lancaster, York | 58 min |
| Jun 12, 1:20 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Berks, Bucks, Chester, Cumberland and 15 more | 7 hr |
| Jun 12, 4:06 PM EDT | Mesoscale Discussion | SPC | Adams, Bedford, Berks, Bucks, Chester, Cumberland and 13 more | 114 min |
| Jun 12, 5:37 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 38 min |
| Jun 12, 5:43 PM EDT | Tornado Warning | PBZ | Allegheny | 32 min |
| Jun 12, 6:02 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Blair, Butler, Cambria, Centre and 5 more | 58 min |
| Jun 12, 6:08 PM EDT | Tornado Warning | PBZ | Westmoreland | 52 min |
| Jun 12, 6:17 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Jun 12, 6:17 PM EDT | Tornado Warning | PBZ | Allegheny | 43 min |
| Jun 12, 6:21 PM EDT | Tornado Warning | PBZ | Armstrong | 39 min |
| Jun 12, 6:38 PM EDT | Flash Flood Warning | PBZ | Armstrong | 3 hr |
| Jun 12, 6:52 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 53 min |
| Jun 12, 6:56 PM EDT | Tornado Warning | PBZ | Armstrong | 64 min |
| Jun 12, 7:23 PM EDT | Tornado Warning | PBZ | Indiana | 52 min |
| Jun 12, 7:40 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 65 min |
| Jun 12, 8:02 PM EDT | Severe Thunderstorm Warning | PHI | Delaware | 43 min |
| Jun 12, 8:11 PM EDT | Flash Flood Warning | PBZ | Venango | 3 hr |
| Jun 12, 8:18 PM EDT | Flash Flood Warning | PBZ | Forest | 3 hr |
| Jun 12, 8:25 PM EDT | Flash Flood Warning | PHI | Berks | 80 min |
| Jun 12, 8:35 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 40 min |
| Jun 12, 8:47 PM EDT | Tornado Warning | CLE | Crawford | 43 min |
| Jun 12, 8:47 PM EDT | Flash Flood Warning | PBZ | Indiana | 3 hr |
| Jun 12, 9:03 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 57 min |
| Jun 12, 9:15 PM EDT | Flash Flood Warning | PHI | Carbon, Monroe | 90 min |
| Jun 12, 9:37 PM EDT | Tornado Warning | CLE | Crawford | 53 min |
| Jun 12, 10:18 PM EDT | Flash Flood Warning | PBZ | Butler | 3 hr |
| Jun 12, 10:40 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Jun 12, 10:44 PM EDT | Flash Flood Warning | PBZ | Venango | 3 hr |
| Jun 12, 11:13 PM EDT | Flash Flood Warning | PBZ | Clarion | 3 hr |
| Jun 12, 11:24 PM EDT | Flash Flood Warning | PBZ | Armstrong | 4 hr |
| Jun 13, 1:24 AM EDT | Flash Flood Warning | PBZ | Forest | 4 hr |
| Jun 13, 12:52 PM EDT | Mesoscale Discussion | SPC | Adams, York | 83 min |
| Jun 13, 6:59 PM EDT | Flash Flood Warning | CTP | York | 3 hr |
| Jun 13, 10:00 PM EDT | Flash Flood Warning | CTP | York | 2 hr |
| Jun 13, 10:21 PM EDT | Flash Flood Warning | PBZ | Lawrence | 3 hr |
| Jun 13, 10:30 PM EDT | Flash Flood Warning | PBZ | Butler | 3 hr |
| Jun 13, 10:58 PM EDT | Flash Flood Warning | PBZ | Armstrong | 3 hr |
| Jun 14, 1:15 AM EDT | Flash Flood Warning | PBZ | Lawrence | 3 hr |
| Jun 14, 12:01 PM EDT | Mesoscale Discussion | SPC | Adams, Bedford, Berks, Blair, Cambria, Carbon and 25 more | 119 min |
| Jun 14, 1:15 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bucks, Carbon, Chester, Columbia and 13 more | 6 hr |
| Jun 14, 3:20 PM EDT | Severe Thunderstorm Warning | CTP | Juniata | 25 min |
| Jun 14, 4:53 PM EDT | Mesoscale Discussion | SPC | Adams, Berks, Bucks, Carbon, Chester, Cumberland and 10 more | 2 hr |
| Jun 20, 3:35 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 55 min |
| Jun 20, 5:10 PM EDT | Flash Flood Warning | PBZ | Washington | 3 hr |
| Jun 20, 6:58 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Jun 21, 3:40 PM EDT | Flash Flood Warning | CTP | Adams, Cumberland | 3 hr |
| Jun 21, 3:54 PM EDT | Flash Flood Warning | BGM | Bradford, Susquehanna | 3 hr |
| Jun 21, 4:15 PM EDT | Flash Flood Warning | CTP | Franklin | 3 hr |
| Jun 21, 6:11 PM EDT | Flash Flood Warning | BGM | Pike | 3 hr |
| Jun 21, 6:54 PM EDT | Flash Flood Warning | BGM | Bradford, Susquehanna | 3 hr |
| Jun 21, 9:10 PM EDT | Flash Flood Warning | BGM | Pike | 3 hr |
| Jun 26, 1:20 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Beaver, Butler, Crawford, Greene, Lawrence and 3 more | 7 hr |
| Jun 26, 4:29 PM EDT | Mesoscale Discussion | SPC | Allegheny, Beaver, Butler, Crawford, Greene, Lawrence and 3 more | 91 min |
| Jul 4, 10:28 AM EDT | Mesoscale Discussion | SPC | Erie | 2 hr |
| Jul 4, 12:32 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 58 min |
| Jul 4, 1:13 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 62 min |
| Jul 4, 1:57 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 63 min |
| Jul 4, 2:45 PM EDT | Mesoscale Discussion | SPC | Clarion, Crawford, Erie, Forest, Lawrence, Mercer and 2 more | 60 min |
| Jul 4, 2:53 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 67 min |
| Jul 4, 3:05 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Blair, Butler, Cambria and 18 more | 6 hr |
| Jul 4, 3:15 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 60 min |
| Jul 4, 3:18 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 57 min |
| Jul 4, 3:33 PM EDT | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Jul 4, 3:34 PM EDT | Severe Thunderstorm Warning | PBZ | Lawrence | 56 min |
| Jul 4, 4:10 PM EDT | Flash Flood Warning | PBZ | Lawrence | 3 hr |
| Jul 4, 4:11 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 64 min |
| Jul 4, 4:29 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Blair, Butler, Cambria and 14 more | 2 hr |
| Jul 4, 4:32 PM EDT | Flash Flood Warning | PBZ | Butler | 3 hr |
| Jul 4, 5:14 PM EDT | Severe Thunderstorm Warning | CTP | McKean | 61 min |
| Jul 4, 5:21 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 54 min |
| Jul 4, 5:53 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 67 min |
| Jul 4, 6:07 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Jul 4, 6:17 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 58 min |
| Jul 4, 6:27 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 63 min |
| Jul 4, 6:49 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 56 min |
| Jul 4, 7:12 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Jul 4, 7:17 PM EDT | Severe Thunderstorm Warning | CTP | Somerset | 58 min |
| Jul 4, 7:19 PM EDT | Flash Flood Warning | PBZ | Fayette | 3 hr |
| Jul 4, 7:29 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Bedford, Blair, Butler and 14 more | 61 min |
| Jul 4, 11:43 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 47 min |
| Jul 5, 3:21 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 39 min |
| Jul 5, 4:05 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 55 min |
| Jul 5, 4:08 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 22 min |
| Jul 5, 4:20 PM EDT | Mesoscale Discussion | SPC | Adams, Berks, Bucks, Chester, Cumberland, Delaware and 6 more | 2 hr |
| Jul 5, 4:27 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery | 33 min |
| Jul 5, 4:37 PM EDT | Severe Thunderstorm Warning | PHI | Delaware, Montgomery, Philadelphia | 38 min |
| Jul 5, 4:54 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 66 min |
| Jul 6, 12:28 AM EDT | Mesoscale Discussion | SPC | Adams, Bedford, Fayette, Franklin, Fulton, Greene and 2 more | 2 hr |
| Jul 6, 3:17 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 58 min |
| Jul 6, 3:21 PM EDT | Severe Thunderstorm Warning | PBZ | Lawrence | 39 min |
| Jul 6, 3:35 PM EDT | Flash Flood Warning | PBZ | Lawrence, Mercer | 3 hr |
| Jul 6, 3:37 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 53 min |
| Jul 6, 3:52 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 53 min |
| Jul 6, 3:54 PM EDT | Flash Flood Warning | PBZ | Butler | 3 hr |
| Jul 6, 3:57 PM EDT | Severe Thunderstorm Warning | CTP | Fulton | 63 min |
| Jul 6, 4:17 PM EDT | Flash Flood Warning | CTP | Fulton | 88 min |
| Jul 6, 4:56 PM EDT | Flash Flood Warning | PBZ | Indiana | 3 hr |
| Jul 6, 5:38 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 67 min |
| Jul 6, 6:15 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 60 min |
| Jul 6, 7:23 PM EDT | Mesoscale Discussion | SPC | Adams, Berks, Bucks, Chester, Cumberland, Dauphin and 11 more | 67 min |
| Jul 6, 8:38 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 67 min |
| Jul 6, 8:53 PM EDT | Severe Thunderstorm Warning | CTP | York | 52 min |
| Jul 7, 12:10 PM EDT | Mesoscale Discussion | SPC | Berks, Bucks, Carbon, Columbia, Lackawanna, Lebanon and 10 more | 65 min |
| Jul 7, 2:23 PM EDT | Mesoscale Discussion | SPC | Berks, Bucks, Carbon, Chester, Delaware, Lackawanna and 12 more | 67 min |
| Jul 7, 2:37 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 53 min |
| Jul 7, 2:55 PM EDT | Severe Thunderstorm Watch | SPC | Berks, Bucks, Carbon, Chester, Delaware, Lancaster and 8 more | 5 hr |
| Jul 7, 2:56 PM EDT | Mesoscale Discussion | SPC | Allegheny, Beaver, Butler, Crawford, Greene, Lawrence and 3 more | 94 min |
| Jul 7, 3:10 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Cambria, Cameron and 14 more | 6 hr |
| Jul 7, 5:05 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 55 min |
| Jul 7, 5:12 PM EDT | Severe Thunderstorm Warning | PBZ | Lawrence | 63 min |
| Jul 7, 5:36 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 54 min |
| Jul 7, 5:39 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 96 min |
| Jul 7, 5:46 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 74 min |
| Jul 7, 5:46 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery, Philadelphia | 44 min |
| Jul 7, 6:22 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 68 min |
| Jul 7, 6:27 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 78 min |
| Jul 7, 6:29 PM EDT | Mesoscale Discussion | SPC | Berks, Bucks, Carbon, Chester, Delaware, Lancaster and 7 more | 61 min |
| Jul 7, 6:33 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 57 min |
| Jul 7, 6:52 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Cameron, Clarion and 12 more | 53 min |
| Jul 7, 6:55 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 65 min |
| Jul 7, 6:58 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 62 min |
| Jul 7, 7:12 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 33 min |
| Jul 7, 7:22 PM EDT | Severe Thunderstorm Warning | CTP | Somerset | 68 min |
| Jul 7, 7:51 PM EDT | Severe Thunderstorm Warning | CTP | Bedford | 69 min |
| Jul 7, 9:55 PM EDT | Severe Thunderstorm Watch | SPC | Beaver, Lawrence | 3 hr |
| Jul 8, 12:57 AM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 7 more | 63 min |
| Jul 8, 2:57 AM EDT | Mesoscale Discussion | SPC | Beaver, Washington | 63 min |
| Jul 8, 2:58 AM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 47 min |
| Jul 8, 3:03 AM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Jul 8, 3:05 AM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 55 min |
| Jul 8, 3:20 AM EDT | Severe Thunderstorm Warning | PBZ | Washington | 55 min |
| Jul 8, 3:20 AM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 6 more | 6 hr |
| Jul 8, 3:43 AM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 62 min |
| Jul 8, 5:06 AM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 54 min |
| Jul 8, 5:18 AM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 57 min |
| Jul 8, 6:06 AM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 6 more | 114 min |
| Jul 8, 6:07 AM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 53 min |
| Jul 8, 6:22 AM EDT | Severe Thunderstorm Warning | PBZ | Lawrence | 68 min |
| Jul 8, 6:31 AM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 74 min |
| Jul 8, 6:40 AM EDT | Severe Thunderstorm Warning | PBZ | Washington | 65 min |
| Jul 8, 6:43 AM EDT | Flash Flood Warning | PBZ | Greene | 3 hr |
| Jul 8, 6:43 AM EDT | Severe Thunderstorm Warning | PBZ | Butler, Jefferson | 62 min |
| Jul 8, 7:02 AM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 58 min |
| Jul 8, 7:13 AM EDT | Flash Flood Warning | PBZ | Fayette | 3 hr |
| Jul 8, 7:29 AM EDT | Mesoscale Discussion | SPC | Armstrong, Fayette, Indiana, Somerset, Westmoreland | 61 min |
| Jul 8, 7:55 AM EDT | Flash Flood Warning | PBZ | Beaver | 3 hr |
| Jul 8, 3:02 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 9 more | 28 min |
| Jul 8, 3:15 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Beaver, Butler, Crawford, Greene, Lawrence and 3 more | 5 hr |
| Jul 8, 5:05 PM EDT | Mesoscale Discussion | SPC | Allegheny, Beaver, Butler, Crawford, Greene, Lawrence and 3 more | 115 min |
| Jul 8, 7:29 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 61 min |
| Jul 8, 7:32 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 58 min |
| Jul 8, 7:40 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 65 min |
| Jul 8, 8:00 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 60 min |
| Jul 8, 8:12 PM EDT | Mesoscale Discussion | SPC | Adams, Allegheny, Armstrong, Beaver, Bedford, Blair and 15 more | 93 min |
| Jul 8, 8:14 PM EDT | Flash Flood Warning | PBZ | Beaver | 3 hr |
| Jul 8, 8:14 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 61 min |
| Jul 8, 8:17 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 58 min |
| Jul 8, 8:18 PM EDT | Flash Flood Warning | PBZ | Washington | 3 hr |
| Jul 8, 8:30 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Allegheny, Armstrong, Bedford, Blair, Butler and 26 more | 4 hr |
| Jul 8, 8:32 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 58 min |
| Jul 8, 8:38 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 67 min |
| Jul 8, 8:51 PM EDT | Flash Flood Warning | PBZ | Greene | 3 hr |
| Jul 8, 9:11 PM EDT | Severe Thunderstorm Warning | CTP | Cambria, Somerset | 49 min |
| Jul 8, 9:27 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 48 min |
| Jul 8, 10:02 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Blair, Somerset | 58 min |
| Jul 8, 11:16 PM EDT | Mesoscale Discussion | SPC | Bedford, Blair, Fulton, Huntingdon, Juniata, Mifflin and 1 more | 119 min |
| Jul 9, 10:28 AM EDT | Mesoscale Discussion | SPC | Adams, Franklin, York | 92 min |
| Jul 9, 1:15 PM EDT | Severe Thunderstorm Watch | SPC | Delaware, Philadelphia | 8 hr |
| Jul 9, 3:48 PM EDT | Mesoscale Discussion | SPC | Delaware | 117 min |
| Jul 9, 7:36 PM EDT | Mesoscale Discussion | SPC | Delaware, Philadelphia | 114 min |
| Jul 10, 3:45 PM EDT | Severe Thunderstorm Watch | SPC | Bedford, Fayette, Fulton, Greene, Somerset, Washington and 1 more | 6 hr |
| Jul 10, 5:15 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 60 min |
| Jul 10, 5:30 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 45 min |
| Jul 10, 6:02 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 58 min |
| Jul 10, 6:48 PM EDT | Flash Flood Warning | PBZ | Fayette | 3 hr |
| Jul 10, 6:57 PM EDT | Mesoscale Discussion | SPC | Bedford, Fayette, Fulton, Somerset | 93 min |
| Jul 10, 7:04 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Jul 10, 7:07 PM EDT | Flash Flood Warning | PBZ | Washington | 3 hr |
| Jul 10, 7:16 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 44 min |
| Jul 10, 7:23 PM EDT | Severe Thunderstorm Warning | CTP | Cambria, Somerset | 67 min |
| Jul 10, 7:37 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 38 min |
| Jul 10, 8:30 PM EDT | Flash Flood Warning | CTP | Cambria | 3 hr |
| Jul 12, 10:53 AM EDT | Mesoscale Discussion | SPC | Allegheny, Fayette, Greene, Washington, Westmoreland | 2 hr |
| Jul 12, 11:51 AM EDT | Mesoscale Discussion | SPC | Greene, Washington | 114 min |
| Jul 12, 12:40 PM EDT | Severe Thunderstorm Watch | SPC | Greene, Washington | 5 hr |
| Jul 12, 2:48 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 57 min |
| Jul 12, 3:11 PM EDT | Mesoscale Discussion | SPC | Greene, Washington | 2 hr |
| Jul 14, 3:19 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 56 min |
| Jul 14, 3:30 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Jul 14, 3:49 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Bedford, Blair, Butler and 7 more | 56 min |
| Jul 15, 11:49 AM EDT | Mesoscale Discussion | SPC | Bradford, Cameron, Clarion, Crawford, Elk, Erie and 9 more | 116 min |
| Jul 18, 6:18 AM EDT | Flash Flood Warning | CTP | McKean, Potter | 3 hr |
| Jul 18, 1:35 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Fayette, Greene and 3 more | 115 min |
| Jul 18, 1:55 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 65 min |
| Jul 18, 1:55 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Fayette, Greene and 2 more | 6 hr |
| Jul 18, 2:33 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 57 min |
| Jul 18, 2:47 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 58 min |
| Jul 18, 2:54 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 66 min |
| Jul 18, 3:07 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 53 min |
| Jul 18, 3:25 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 80 min |
| Jul 18, 3:45 PM EDT | Tornado Warning | CTP | Clearfield | 30 min |
| Jul 18, 3:55 PM EDT | Flash Flood Warning | PBZ | Jefferson | 2 hr |
| Jul 18, 4:05 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 70 min |
| Jul 18, 4:14 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 31 min |
| Jul 18, 4:18 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming, Union | 57 min |
| Jul 18, 4:22 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 53 min |
| Jul 18, 4:25 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 50 min |
| Jul 18, 4:30 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 60 min |
| Jul 18, 4:49 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Bedford, Cambria, Fayette and 5 more | 116 min |
| Jul 18, 5:24 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Greene | 81 min |
| Jul 18, 5:33 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 27 min |
| Jul 18, 5:53 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Northumberland | 22 min |
| Jul 18, 6:02 PM EDT | Severe Thunderstorm Warning | CTP | Juniata, Mifflin | 28 min |
| Jul 18, 6:03 PM EDT | Severe Thunderstorm Warning | PHI | Carbon | 42 min |
| Jul 18, 6:47 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Fayette, Greene, Washington and 1 more | 88 min |
| Jul 18, 7:01 PM EDT | Severe Thunderstorm Warning | CTP | Perry | 29 min |
| Jul 18, 7:01 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin | 59 min |
| Jul 18, 7:31 PM EDT | Severe Thunderstorm Warning | CTP | Lebanon | 59 min |
| Jul 18, 7:42 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 18 min |
| Jul 18, 7:59 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 61 min |
| Jul 21, 5:29 AM EDT | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Jul 21, 8:40 AM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Greene and 4 more | 5 hr |
| Jul 21, 1:15 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Blair, Bradford, Butler, Cambria and 36 more | 2 hr |
| Jul 21, 1:21 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 54 min |
| Jul 21, 1:33 PM EDT | Flash Flood Warning | CLE | Crawford | 3 hr |
| Jul 21, 1:40 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Blair, Bradford, Butler and 38 more | 6 hr |
| Jul 21, 1:42 PM EDT | Tornado Warning | PBZ | Mercer | 63 min |
| Jul 21, 1:44 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 61 min |
| Jul 21, 1:45 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 60 min |
| Jul 21, 1:47 PM EDT | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Jul 21, 1:50 PM EDT | Severe Thunderstorm Warning | PBZ | Venango | 70 min |
| Jul 21, 1:56 PM EDT | Flash Flood Warning | PBZ | Venango | 3 hr |
| Jul 21, 1:59 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 76 min |
| Jul 21, 2:02 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 43 min |
| Jul 21, 2:07 PM EDT | Severe Thunderstorm Warning | PBZ | Lawrence | 53 min |
| Jul 21, 2:09 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 51 min |
| Jul 21, 2:13 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Beaver | 62 min |
| Jul 21, 2:14 PM EDT | Severe Thunderstorm Warning | PBZ | Forest | 76 min |
| Jul 21, 2:17 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 73 min |
| Jul 21, 2:29 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 61 min |
| Jul 21, 2:32 PM EDT | Flash Flood Warning | PBZ | Clarion, Forest | 3 hr |
| Jul 21, 2:41 PM EDT | Severe Thunderstorm Warning | CTP | Elk, McKean | 79 min |
| Jul 21, 3:10 PM EDT | Severe Thunderstorm Warning | CTP | Cameron | 65 min |
| Jul 21, 3:18 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 57 min |
| Jul 21, 3:24 PM EDT | Severe Thunderstorm Warning | CTP | Potter | 81 min |
| Jul 21, 3:35 PM EDT | Severe Thunderstorm Watch | SPC | Lackawanna, Wayne | 6 hr |
| Jul 21, 3:46 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Huntingdon | 59 min |
| Jul 21, 3:51 PM EDT | Tornado Warning | CTP | Potter | 24 min |
| Jul 21, 3:51 PM EDT | Mesoscale Discussion | SPC | Blair, Bradford, Cambria, Cameron, Centre, Clearfield and 25 more | 114 min |
| Jul 21, 3:55 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 65 min |
| Jul 21, 3:58 PM EDT | Severe Thunderstorm Warning | CTP | Tioga | 62 min |
| Jul 21, 4:00 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 45 min |
| Jul 21, 4:04 PM EDT | Severe Thunderstorm Warning | CTP | Mifflin | 41 min |
| Jul 21, 4:12 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 93 min |
| Jul 21, 4:21 PM EDT | Severe Thunderstorm Warning | CTP | Juniata, Snyder, Union | 84 min |
| Jul 21, 4:34 PM EDT | Tornado Warning | CTP | Clinton, Lycoming | 26 min |
| Jul 21, 4:38 PM EDT | Flash Flood Warning | CLE | Crawford | 4 hr |
| Jul 21, 4:44 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 61 min |
| Jul 21, 4:46 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 59 min |
| Jul 21, 4:51 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 39 min |
| Jul 21, 4:59 PM EDT | Severe Thunderstorm Warning | CTP | Montour, Northumberland | 61 min |
| Jul 21, 5:05 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Sullivan | 70 min |
| Jul 21, 5:11 PM EDT | Severe Thunderstorm Warning | CTP | Perry | 49 min |
| Jul 21, 5:17 PM EDT | Tornado Warning | CTP | Lycoming | 28 min |
| Jul 21, 5:33 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne, Wyoming | 42 min |
| Jul 21, 5:33 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 57 min |
| Jul 21, 5:39 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne, Wyoming | 36 min |
| Jul 21, 5:47 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Schuylkill | 73 min |
| Jul 21, 6:04 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Susquehanna | 41 min |
| Jul 21, 6:11 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 49 min |
| Jul 21, 6:22 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 53 min |
| Jul 21, 6:24 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 51 min |
| Jul 21, 6:30 PM EDT | Severe Thunderstorm Watch | SPC | Bucks, Lehigh, Monroe, Northampton, Pike | 5 hr |
| Jul 21, 6:33 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 27 min |
| Jul 21, 6:43 PM EDT | Severe Thunderstorm Warning | BGM | Pike | 62 min |
| Jul 21, 6:44 PM EDT | Severe Thunderstorm Warning | BGM | Pike | 61 min |
| Jul 21, 7:03 PM EDT | Severe Thunderstorm Warning | CTP | Adams, York | 57 min |
| Jul 21, 7:07 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh, Northampton | 53 min |
| Jul 21, 7:12 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 48 min |
| Jul 21, 7:26 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 64 min |
| Jul 21, 7:30 PM EDT | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Jul 21, 7:32 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 43 min |
| Jul 21, 7:33 PM EDT | Tornado Warning | PBZ | Mercer | 42 min |
| Jul 21, 7:35 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 55 min |
| Jul 21, 7:45 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 30 min |
| Jul 21, 7:51 PM EDT | Mesoscale Discussion | SPC | Bucks, Northampton | 84 min |
| Jul 21, 7:54 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh, Northampton | 81 min |
| Jul 21, 8:15 PM EDT | Tornado Warning | PBZ | Mercer | 60 min |
| Jul 21, 8:28 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 62 min |
| Jul 21, 8:28 PM EDT | Severe Thunderstorm Warning | PBZ | Venango | 62 min |
| Jul 21, 8:33 PM EDT | Flash Flood Warning | PBZ | Venango | 3 hr |
| Jul 21, 8:36 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 84 min |
| Jul 21, 8:46 PM EDT | Flash Flood Warning | CLE | Crawford | 6 hr |
| Jul 21, 8:54 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Montgomery | 81 min |
| Jul 21, 8:55 PM EDT | Flash Flood Warning | CTP | Warren | 6 hr |
| Jul 21, 9:06 PM EDT | Severe Thunderstorm Warning | PBZ | Lawrence | 39 min |
| Jul 21, 9:22 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 53 min |
| Jul 21, 9:58 PM EDT | Flash Flood Warning | CTP | McKean | 6 hr |
| Jul 21, 10:03 PM EDT | Flash Flood Warning | PBZ | Forest | 3 hr |
| Jul 21, 10:27 PM EDT | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Jul 21, 10:42 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 63 min |
| Jul 21, 11:19 PM EDT | Severe Thunderstorm Warning | CTP | Potter | 26 min |
| Jul 21, 11:52 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 53 min |
| Jul 22, 1:33 AM EDT | Severe Thunderstorm Warning | BGM | Bradford, Susquehanna | 42 min |
| Jul 22, 2:30 AM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 45 min |
| Jul 22, 12:06 PM EDT | Flash Flood Warning | PBZ | Mercer, Venango | 3 hr |
| Jul 22, 12:08 PM EDT | Flash Flood Warning | CLE | Crawford | 4 hr |
| Jul 22, 12:58 PM EDT | Flash Flood Warning | PBZ | Lawrence | 3 hr |
| Jul 22, 1:19 PM EDT | Mesoscale Discussion | SPC | Bucks, Chester, Delaware, Montgomery, Philadelphia | 86 min |
| Jul 22, 1:35 PM EDT | Severe Thunderstorm Warning | PBZ | Venango | 55 min |
| Jul 22, 1:45 PM EDT | Severe Thunderstorm Watch | SPC | Bucks, Delaware, Montgomery, Philadelphia | 5 hr |
| Jul 22, 2:07 PM EDT | Flash Flood Warning | CLE | Erie | 4 hr |
| Jul 22, 2:12 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 63 min |
| Jul 22, 2:16 PM EDT | Flash Flood Warning | PBZ | Forest | 3 hr |
| Jul 22, 2:27 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 48 min |
| Jul 22, 2:33 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion, Forest | 57 min |
| Jul 22, 2:56 PM EDT | Flash Flood Warning | PBZ | Mercer, Venango | 3 hr |
| Jul 22, 3:16 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Cambria, Cameron and 19 more | 59 min |
| Jul 22, 3:23 PM EDT | Severe Thunderstorm Warning | CTP | Perry | 52 min |
| Jul 22, 3:26 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 49 min |
| Jul 22, 3:33 PM EDT | Flash Flood Warning | CLE | Crawford | 4 hr |
| Jul 22, 3:33 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin | 57 min |
| Jul 22, 3:50 PM EDT | Tornado Warning | CTP | Dauphin | 40 min |
| Jul 22, 3:52 PM EDT | Flash Flood Warning | PBZ | Clarion | 3 hr |
| Jul 22, 3:57 PM EDT | Flash Flood Warning | PBZ | Jefferson | 3 hr |
| Jul 22, 4:24 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 66 min |
| Jul 22, 4:43 PM EDT | Severe Thunderstorm Warning | CTP | Cameron | 17 min |
| Jul 22, 5:06 PM EDT | Severe Thunderstorm Warning | CTP | Potter | 69 min |
| Jul 22, 5:15 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Jul 22, 5:59 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland | 91 min |
| Jul 22, 6:30 PM EDT | Flash Flood Warning | PHI | Berks, Lehigh | 4 hr |
| Jul 22, 6:32 PM EDT | Severe Thunderstorm Warning | CTP | York | 58 min |
| Jul 22, 6:43 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin | 47 min |
| Jul 22, 7:09 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 36 min |
| Jul 22, 8:00 PM EDT | Flash Flood Warning | PHI | Bucks, Montgomery, Northampton | 4 hr |
| Jul 22, 9:55 PM EDT | Flash Flood Warning | PBZ | Lawrence, Mercer | 3 hr |
| Jul 23, 8:07 AM EDT | Flash Flood Warning | PBZ | Allegheny, Westmoreland | 3 hr |
| Jul 23, 1:05 PM EDT | Mesoscale Discussion | SPC | Adams, Berks, Bucks, Carbon, Chester, Columbia and 18 more | 115 min |
| Jul 23, 3:59 PM EDT | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Jul 23, 4:09 PM EDT | Flash Flood Warning | PBZ | Venango | 3 hr |
| Jul 23, 5:09 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland | 66 min |
| Jul 23, 6:25 PM EDT | Flash Flood Warning | PBZ | Clarion | 3 hr |
| Jul 23, 6:34 PM EDT | Flash Flood Warning | PBZ | Forest | 3 hr |
| Jul 23, 7:23 PM EDT | Flash Flood Warning | PBZ | Armstrong | 3 hr |
| Jul 23, 7:43 PM EDT | Severe Thunderstorm Warning | CTP | York | 47 min |
| Jul 24, 6:34 AM EDT | Flash Flood Warning | PBZ | Mercer | 4 hr |
| Jul 24, 5:18 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 57 min |
| Jul 27, 4:31 PM EDT | Mesoscale Discussion | SPC | Blair, Carbon, Centre, Clearfield, Clinton, Columbia and 14 more | 89 min |
| Jul 27, 5:02 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 43 min |
| Jul 27, 5:32 PM EDT | Severe Thunderstorm Warning | CTP | Montour, Northumberland, Union | 43 min |
| Jul 27, 5:40 PM EDT | Mesoscale Discussion | SPC | Adams, Allegheny, Armstrong, Beaver, Bedford, Blair and 29 more | 2 hr |
| Jul 27, 6:05 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Allegheny, Armstrong, Beaver, Bedford, Berks and 31 more | 5 hr |
| Jul 27, 6:42 PM EDT | Flash Flood Warning | PBZ | Lawrence, Mercer | 2 hr |
| Jul 27, 7:26 PM EDT | Flash Flood Warning | PBZ | Butler | 3 hr |
| Jul 27, 7:35 PM EDT | Flash Flood Warning | PBZ | Clarion, Jefferson | 3 hr |
| Jul 27, 8:18 PM EDT | Mesoscale Discussion | SPC | Adams, Allegheny, Armstrong, Beaver, Bedford, Blair and 36 more | 117 min |
| Jul 27, 8:37 PM EDT | Flash Flood Warning | CTP | Clearfield | 3 hr |
| Jul 31, 6:23 PM EDT | Flash Flood Warning | CLE | Erie | 3 hr |
| Jul 31, 6:33 PM EDT | Flash Flood Warning | PBZ | Fayette | 3 hr |
| Aug 2, 6:17 PM EDT | Mesoscale Discussion | SPC | Bedford, Blair, Cambria, Centre, Clinton, Somerset | 3 hr |
| Aug 2, 7:56 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Huntingdon | 49 min |
| Aug 2, 11:22 PM EDT | Flash Flood Warning | CTP | Bedford | 4 hr |
| Aug 3, 4:00 AM EDT | Flash Flood Warning | PBZ | Butler | 3 hr |
| Aug 3, 4:07 AM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Aug 3, 2:47 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 28 min |
| Aug 3, 2:50 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 40 min |
| Aug 3, 2:57 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 63 min |
| Aug 3, 3:01 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 59 min |
| Aug 3, 3:15 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Aug 3, 3:29 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 61 min |
| Aug 3, 3:54 PM EDT | Severe Thunderstorm Warning | CTP | Somerset | 51 min |
| Aug 3, 4:02 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 58 min |
| Aug 4, 12:40 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Aug 4, 12:52 PM EDT | Flash Flood Warning | PBZ | Washington | 3 hr |
| Aug 4, 4:21 PM EDT | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Aug 4, 6:18 PM EDT | Flash Flood Warning | PHI | Northampton | 117 min |
| Aug 5, 12:15 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 60 min |
| Aug 5, 1:00 PM EDT | Flash Flood Warning | CLE | Erie | 4 hr |
| Aug 5, 2:32 PM EDT | Flash Flood Warning | PHI | Carbon, Lehigh | 3 hr |
| Aug 5, 6:07 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 38 min |
| Aug 5, 6:20 PM EDT | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Aug 5, 7:06 PM EDT | Flash Flood Warning | CLE | Erie | 3 hr |
| Aug 5, 8:37 PM EDT | Flash Flood Warning | PBZ | Venango | 3 hr |
| Aug 6, 1:19 PM EDT | Flash Flood Warning | PHI | Carbon | 3 hr |
| Aug 6, 1:22 PM EDT | Flash Flood Warning | BGM | Luzerne | 53 min |
| Aug 6, 2:10 PM EDT | Flash Flood Warning | BGM | Luzerne | 2 hr |
| Aug 6, 2:50 PM EDT | Flash Flood Warning | BGM | Wayne | 3 hr |
| Aug 6, 8:02 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Aug 6, 9:22 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Aug 7, 2:18 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Aug 7, 7:09 PM EDT | Flash Flood Warning | PBZ | Lawrence | 3 hr |
| Aug 7, 7:23 PM EDT | Severe Thunderstorm Warning | PBZ | Lawrence | 52 min |
| Aug 7, 8:06 PM EDT | Flash Flood Warning | PBZ | Clarion | 3 hr |
| Aug 7, 8:59 PM EDT | Flash Flood Warning | PBZ | Forest | 3 hr |
| Aug 7, 9:03 PM EDT | Flash Flood Warning | PBZ | Venango | 3 hr |
| Aug 7, 10:53 PM EDT | Flash Flood Warning | CTP | Potter | 3 hr |
| Aug 8, 3:25 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Aug 8, 3:41 PM EDT | Flash Flood Warning | PBZ | Fayette | 3 hr |
| Aug 8, 9:18 PM EDT | Flash Flood Warning | PBZ | Butler | 3 hr |
| Aug 8, 10:54 PM EDT | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Aug 9, 1:20 PM EDT | Flash Flood Warning | BGM | Bradford | 3 hr |
| Aug 9, 2:58 PM EDT | Flash Flood Warning | PBZ | Fayette | 3 hr |
| Aug 9, 3:31 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Aug 9, 3:47 PM EDT | Flash Flood Warning | CTP | Tioga | 3 hr |
| Aug 9, 5:02 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 58 min |
| Aug 9, 5:21 PM EDT | Flash Flood Warning | CLE | Crawford | 3 hr |
| Aug 9, 5:38 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Aug 9, 5:46 PM EDT | Flash Flood Warning | PHI | Chester, Montgomery | 3 hr |
| Aug 9, 5:53 PM EDT | Flash Flood Warning | PBZ | Venango | 3 hr |
| Aug 9, 6:00 PM EDT | Flash Flood Warning | PHI | Bucks | 3 hr |
| Aug 9, 6:14 PM EDT | Flash Flood Warning | PBZ | Lawrence | 3 hr |
| Aug 9, 6:24 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 51 min |
| Aug 9, 6:26 PM EDT | Flash Flood Warning | PBZ | Indiana | 3 hr |
| Aug 9, 6:32 PM EDT | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Aug 9, 7:06 PM EDT | Flash Flood Warning | CTP | Tioga | 3 hr |
| Aug 9, 7:21 PM EDT | Flash Flood Warning | CTP | McKean | 3 hr |
| Aug 9, 7:32 PM EDT | Flash Flood Warning | CTP | Blair, Clearfield | 3 hr |
| Aug 9, 7:42 PM EDT | Flash Flood Warning | CTP | Cameron | 3 hr |
| Aug 9, 7:46 PM EDT | Flash Flood Warning | CTP | Centre | 3 hr |
| Aug 9, 8:12 PM EDT | Flash Flood Warning | CTP | Juniata, Perry | 3 hr |
| Aug 9, 8:26 PM EDT | Flash Flood Warning | CTP | Potter | 3 hr |
| Aug 9, 8:30 PM EDT | Flash Flood Warning | PHI | Chester | 2 hr |
| Aug 9, 9:37 PM EDT | Flash Flood Warning | PBZ | Beaver | 3 hr |
| Aug 9, 10:17 PM EDT | Flash Flood Warning | CTP | McKean | 118 min |
| Aug 9, 10:24 PM EDT | Flash Flood Warning | CTP | Tioga | 3 hr |
| Aug 9, 10:33 PM EDT | Flash Flood Warning | PHI | Chester | 3 hr |
| Aug 10, 7:22 AM EDT | Flash Flood Warning | PHI | Chester | 113 min |
| Aug 10, 7:35 AM EDT | Flash Flood Warning | CLE | Crawford | 3 hr |
| Aug 10, 3:37 PM EDT | Flash Flood Warning | CLE | Crawford | 4 hr |
| Aug 10, 3:56 PM EDT | Flash Flood Warning | PBZ | Butler | 3 hr |
| Aug 10, 8:34 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Aug 11, 2:01 AM EDT | Flash Flood Warning | PHI | Montgomery | 3 hr |
| Aug 11, 3:16 AM EDT | Flash Flood Warning | PHI | Bucks, Lehigh | 119 min |
| Aug 11, 12:29 PM EDT | Flash Flood Warning | BGM | Lackawanna | 3 hr |
| Aug 11, 1:00 PM EDT | Flash Flood Warning | CTP | Lebanon | 3 hr |
| Aug 11, 6:07 PM EDT | Flash Flood Warning | PHI | Northampton | 3 hr |
| Aug 12, 5:06 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 54 min |
| Aug 12, 5:29 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Aug 12, 5:46 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 59 min |
| Aug 12, 6:42 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 33 min |
| Aug 12, 7:02 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Aug 12, 10:03 PM EDT | Flash Flood Warning | CTP | McKean | 117 min |
| Aug 13, 3:39 PM EDT | Flash Flood Warning | PHI | Northampton | 3 hr |
| Aug 13, 4:24 PM EDT | Flash Flood Warning | CTP | Schuylkill | 2 hr |
| Aug 13, 5:36 PM EDT | Flash Flood Warning | CTP | Dauphin | 114 min |
| Aug 16, 12:44 PM EDT | Flash Flood Warning | BGM | Lackawanna, Luzerne | 2 hr |
| Aug 16, 12:51 PM EDT | Mesoscale Discussion | SPC | Bradford, Cameron, Clarion, Clinton, Elk, Forest and 11 more | 114 min |
| Aug 16, 1:25 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Bradford, Butler, Cameron and 21 more | 6 hr |
| Aug 16, 1:50 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 55 min |
| Aug 16, 2:00 PM EDT | Flash Flood Warning | PHI | Monroe | 3 hr |
| Aug 16, 2:00 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Beaver, Crawford, Greene, Lawrence, Mercer and 1 more | 6 hr |
| Aug 16, 2:11 PM EDT | Flash Flood Warning | BGM | Pike | 2 hr |
| Aug 16, 2:12 PM EDT | Flash Flood Warning | CTP | Lancaster, York | 3 hr |
| Aug 16, 2:22 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 38 min |
| Aug 16, 2:32 PM EDT | Severe Thunderstorm Warning | BGM | Bradford, Susquehanna | 58 min |
| Aug 16, 2:43 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 47 min |
| Aug 16, 2:49 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 71 min |
| Aug 16, 3:41 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 49 min |
| Aug 16, 3:48 PM EDT | Severe Thunderstorm Warning | CTP | Sullivan | 72 min |
| Aug 16, 4:37 PM EDT | Flash Flood Warning | BGM | Luzerne | 3 hr |
| Aug 16, 4:50 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Butler | 55 min |
| Aug 16, 5:10 PM EDT | Flash Flood Warning | PHI | Monroe | 2 hr |
| Aug 16, 5:25 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 50 min |
| Aug 16, 6:26 PM EDT | Mesoscale Discussion | SPC | Armstrong, Bradford, Cameron, Clarion, Clearfield, Clinton and 12 more | 64 min |
| Aug 16, 6:31 PM EDT | Flash Flood Warning | PBZ | Venango | 3 hr |
| Aug 16, 6:53 PM EDT | Mesoscale Discussion | SPC | Greene, Washington | 97 min |
| Aug 16, 7:49 PM EDT | Severe Thunderstorm Warning | PBZ | Lawrence | 56 min |
| Aug 16, 8:05 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 40 min |
| Aug 16, 8:45 PM EDT | Severe Thunderstorm Warning | PBZ | Butler, Indiana | 60 min |
| Aug 16, 8:50 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 55 min |
| Aug 16, 8:54 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 66 min |
| Aug 16, 8:58 PM EDT | Flash Flood Warning | CTP | Dauphin | 3 hr |
| Aug 16, 10:14 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 46 min |
| Aug 16, 10:26 PM EDT | Severe Thunderstorm Warning | CTP | York | 34 min |
| Aug 17, 3:00 AM EDT | Severe Thunderstorm Warning | CTP | Centre | 15 min |
| Aug 17, 3:17 AM EDT | Severe Thunderstorm Warning | CTP | Mifflin, Snyder | 28 min |
| Aug 17, 3:39 PM EDT | Severe Thunderstorm Warning | PHI | Northampton | 51 min |
| Aug 17, 4:47 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 58 min |
| Aug 22, 3:45 AM EDT | Severe Thunderstorm Warning | CTP | Warren | 60 min |
| Aug 22, 4:25 AM EDT | Severe Thunderstorm Warning | CTP | McKean | 50 min |
| Aug 22, 12:32 PM EDT | Mesoscale Discussion | SPC | Berks, Bucks, Carbon, Lehigh, Monroe, Montgomery and 3 more | 118 min |
| Aug 22, 1:15 PM EDT | Severe Thunderstorm Watch | SPC | Bucks, Chester, Delaware, Montgomery, Northampton, Philadelphia and 1 more | 7 hr |
| Aug 22, 3:27 PM EDT | Mesoscale Discussion | SPC | Adams, Allegheny, Armstrong, Bedford, Berks, Blair and 39 more | 3 hr |
| Aug 22, 3:55 PM EDT | Severe Thunderstorm Warning | CTP | Northumberland | 20 min |
| Aug 22, 4:10 PM EDT | Mesoscale Discussion | SPC | Bucks, Delaware, Montgomery, Philadelphia | 95 min |
| Aug 22, 5:22 PM EDT | Severe Thunderstorm Warning | CTP | York | 53 min |
| Aug 22, 5:36 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 54 min |
| Aug 22, 7:22 PM EDT | Mesoscale Discussion | SPC | Bucks, Chester, Delaware, Montgomery, Northampton, Philadelphia and 1 more | 53 min |
| Aug 25, 11:24 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 66 min |
| Aug 26, 12:03 AM EDT | Flash Flood Warning | PBZ | Armstrong | 3 hr |
| Aug 26, 12:27 AM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 7 more | 63 min |
| Aug 26, 3:00 AM EDT | Severe Thunderstorm Warning | PBZ | Butler, Venango | 60 min |
| Aug 26, 3:10 AM EDT | Flash Flood Warning | PBZ | Armstrong | 3 hr |
| Aug 26, 3:52 AM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 53 min |
| Aug 26, 4:25 AM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 65 min |
| Aug 26, 4:51 AM EDT | Severe Thunderstorm Warning | PBZ | Venango | 54 min |
| Aug 26, 5:13 AM EDT | Flash Flood Warning | PBZ | Jefferson | 3 hr |
| Aug 26, 5:38 AM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 52 min |
| Aug 26, 6:47 AM EDT | Severe Thunderstorm Warning | PBZ | Lawrence | 28 min |
| Aug 26, 7:07 AM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 53 min |
| Aug 26, 7:34 AM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 56 min |
| Aug 26, 8:06 AM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 54 min |
| Aug 26, 8:23 AM EDT | Severe Thunderstorm Warning | PBZ | Mercer, Venango | 52 min |
| Aug 26, 8:30 AM EDT | Mesoscale Discussion | SPC | Cameron, Clarion, Crawford, Elk, Erie, Forest and 7 more | 2 hr |
| Aug 26, 8:54 AM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 66 min |
| Aug 26, 9:05 AM EDT | Flash Flood Warning | PBZ | Venango | 3 hr |
| Aug 26, 9:10 AM EDT | Severe Thunderstorm Watch | SPC | Armstrong, Beaver, Butler, Cameron, Clarion, Clearfield and 14 more | 5 hr |
| Aug 26, 9:18 AM EDT | Severe Thunderstorm Warning | PBZ | Venango | 57 min |
| Aug 26, 9:26 AM EDT | Flash Flood Warning | PBZ | Clarion | 3 hr |
| Aug 26, 10:00 AM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 60 min |
| Aug 26, 11:08 AM EDT | Mesoscale Discussion | SPC | Allegheny, Beaver, Bedford, Butler, Cambria, Fayette and 6 more | 2 hr |
| Aug 26, 11:20 AM EDT | Severe Thunderstorm Warning | CTP | Warren | 55 min |
| Aug 26, 11:31 AM EDT | Severe Thunderstorm Warning | PBZ | Venango | 59 min |
| Aug 26, 11:47 AM EDT | Flash Flood Warning | PBZ | Venango | 3 hr |
| Aug 26, 12:16 PM EDT | Severe Thunderstorm Warning | PBZ | Lawrence | 59 min |
| Aug 26, 12:36 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 54 min |
| Aug 26, 12:44 PM EDT | Flash Flood Warning | PBZ | Butler | 3 hr |
| Aug 26, 1:05 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Allegheny, Armstrong, Beaver, Bedford, Blair and 17 more | 5 hr |
| Aug 26, 1:13 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Indiana | 62 min |
| Aug 26, 1:28 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 62 min |
| Aug 26, 1:33 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 57 min |
| Aug 26, 1:37 PM EDT | Tornado Warning | PBZ | Indiana | 38 min |
| Aug 26, 1:50 PM EDT | Flash Flood Warning | PBZ | Lawrence | 3 hr |
| Aug 26, 1:54 PM EDT | Severe Thunderstorm Warning | CTP | Blair | 66 min |
| Aug 26, 1:54 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Aug 26, 2:00 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Somerset | 60 min |
| Aug 26, 2:16 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 59 min |
| Aug 26, 2:19 PM EDT | Mesoscale Discussion | SPC | Bedford, Fulton | 116 min |
| Aug 26, 2:27 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 63 min |
| Aug 26, 2:34 PM EDT | Severe Thunderstorm Warning | CTP | Fulton | 56 min |
| Aug 26, 2:53 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 52 min |
| Aug 26, 2:58 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Somerset | 62 min |
| Aug 26, 3:14 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 61 min |
| Aug 26, 3:46 PM EDT | Mesoscale Discussion | SPC | Fayette, Greene, Washington | 119 min |
| Aug 26, 7:55 PM EDT | Mesoscale Discussion | SPC | Beaver, Greene, Washington | 65 min |
| Aug 26, 9:20 PM EDT | Severe Thunderstorm Watch | SPC | Fayette, Greene, Washington | 6 hr |
| Aug 26, 9:38 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 52 min |
| Aug 26, 9:43 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 47 min |
| Aug 26, 10:03 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 42 min |
| Aug 26, 10:11 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 49 min |
| Aug 26, 10:18 PM EDT | Mesoscale Discussion | SPC | Fayette, Greene | 57 min |
| Aug 26, 10:24 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 51 min |
| Aug 27, 4:55 AM EDT | Severe Thunderstorm Warning | PBZ | Washington | 65 min |
| Aug 27, 5:36 AM EDT | Severe Thunderstorm Warning | PBZ | Greene | 54 min |
| Aug 27, 6:11 AM EDT | Mesoscale Discussion | SPC | Bedford, Fayette, Fulton, Greene, Somerset | 2 hr |
| Aug 27, 6:58 AM EDT | Flash Flood Warning | PBZ | Fayette, Greene | 4 hr |
| Aug 27, 7:31 AM EDT | Severe Thunderstorm Warning | PBZ | Greene | 59 min |
| Aug 27, 8:01 AM EDT | Severe Thunderstorm Warning | PBZ | Washington | 44 min |
| Aug 27, 8:22 AM EDT | Severe Thunderstorm Warning | PBZ | Butler | 53 min |
| Aug 27, 8:27 AM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 63 min |
| Aug 27, 8:48 AM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 57 min |
| Aug 27, 9:06 AM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 54 min |
| Aug 27, 9:15 AM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 60 min |
| Aug 27, 9:23 AM EDT | Mesoscale Discussion | SPC | Adams, Bedford, Blair, Cambria, Centre, Cumberland and 8 more | 2 hr |
| Aug 27, 9:35 AM EDT | Severe Thunderstorm Warning | CTP | Cambria | 55 min |
| Aug 27, 9:38 AM EDT | Severe Thunderstorm Warning | PBZ | Washington | 52 min |
| Aug 27, 9:40 AM EDT | Severe Thunderstorm Watch | SPC | Adams, Allegheny, Armstrong, Beaver, Bedford, Blair and 31 more | 5 hr |
| Aug 27, 9:43 AM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 62 min |
| Aug 27, 9:53 AM EDT | Flash Flood Warning | PBZ | Washington | 3 hr |
| Aug 27, 9:58 AM EDT | Severe Thunderstorm Warning | CTP | Blair | 17 min |
| Aug 27, 10:04 AM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Aug 27, 10:05 AM EDT | Severe Thunderstorm Warning | CTP | Centre | 70 min |
| Aug 27, 10:15 AM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 45 min |
| Aug 27, 10:18 AM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 42 min |
| Aug 27, 10:27 AM EDT | Severe Thunderstorm Warning | CTP | Blair | 18 min |
| Aug 27, 10:42 AM EDT | Severe Thunderstorm Warning | CTP | Mifflin | 33 min |
| Aug 27, 11:48 AM EDT | Mesoscale Discussion | SPC | Adams, Allegheny, Beaver, Bedford, Cambria, Columbia and 18 more | 87 min |
| Aug 27, 12:17 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester | 43 min |
| Aug 27, 12:58 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery, Philadelphia | 42 min |
| Aug 27, 1:20 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 40 min |
| Aug 27, 2:05 PM EDT | Severe Thunderstorm Watch | SPC | Fayette, Greene, Washington, Westmoreland | 5 hr |
| Aug 27, 2:57 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 48 min |
| Aug 27, 3:09 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 96 min |
| Aug 27, 3:09 PM EDT | Mesoscale Discussion | SPC | Adams, Bedford, Franklin, Fulton, Somerset | 66 min |
| Aug 27, 3:21 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 54 min |
| Aug 27, 3:30 PM EDT | Severe Thunderstorm Watch | SPC | Bedford, Franklin, Fulton, Somerset | 7 hr |
| Aug 27, 4:04 PM EDT | Flash Flood Warning | PBZ | Fayette | 3 hr |
| Aug 27, 4:10 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 65 min |
| Aug 27, 4:12 PM EDT | Flash Flood Warning | PBZ | Greene | 3 hr |
| Aug 27, 4:28 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 62 min |
| Aug 27, 4:36 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 54 min |
| Aug 27, 5:03 PM EDT | Mesoscale Discussion | SPC | Bedford, Fayette, Franklin, Fulton, Greene, Somerset and 1 more | 87 min |
| Aug 27, 5:47 PM EDT | Severe Thunderstorm Warning | CTP | Bedford | 43 min |
| Aug 27, 5:56 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 64 min |
| Aug 27, 6:56 PM EDT | Mesoscale Discussion | SPC | Adams | 64 min |
| Aug 29, 1:32 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Blair, Bradford, Butler and 26 more | 2 hr |
| Aug 29, 2:05 PM EDT | Severe Thunderstorm Watch | SPC | Armstrong, Beaver, Butler, Cameron, Centre, Clarion and 14 more | 5 hr |
| Aug 29, 2:59 PM EDT | Mesoscale Discussion | SPC | Adams, Bedford, Berks, Bucks, Carbon, Chester and 24 more | 3 hr |
| Aug 29, 3:50 PM EDT | Severe Thunderstorm Watch | SPC | Berks, Bucks, Chester, Delaware, Lancaster, Lebanon and 3 more | 5 hr |
| Aug 29, 4:51 PM EDT | Mesoscale Discussion | SPC | Armstrong, Beaver, Butler, Cameron, Centre, Clarion and 12 more | 84 min |
| Aug 29, 7:33 PM EDT | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Aug 29, 9:33 PM EDT | Flash Flood Warning | PBZ | Greene | 3 hr |
| Aug 30, 1:45 PM EDT | Severe Thunderstorm Watch | SPC | Delaware | 5 hr |
| Sep 1, 7:17 PM EDT | Mesoscale Discussion | SPC | Adams, York | 88 min |
| Sep 1, 9:40 PM EDT | Flash Flood Warning | CTP | Franklin | 3 hr |
| Sep 1, 10:05 PM EDT | Flash Flood Warning | CTP | Lancaster | 3 hr |
| Sep 1, 11:22 PM EDT | Flash Flood Warning | PBZ | Butler, Lawrence | 3 hr |
| Sep 1, 11:28 PM EDT | Flash Flood Warning | PBZ | Venango | 3 hr |
| Sep 1, 11:45 PM EDT | Flash Flood Warning | PBZ | Clarion, Jefferson | 3 hr |
| Sep 2, 12:04 AM EDT | Flash Flood Warning | PBZ | Fayette | 3 hr |
| Sep 3, 4:37 AM EDT | Flash Flood Warning | PBZ | Lawrence | 3 hr |
| Sep 3, 1:01 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Sep 4, 6:51 PM EDT | Flash Flood Warning | BGM | Bradford | 3 hr |
| Sep 4, 7:45 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 15 min |
| Sep 4, 7:45 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 45 min |
| Sep 4, 7:47 PM EDT | Flash Flood Warning | BGM | Susquehanna | 3 hr |
| Sep 4, 7:48 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 42 min |
| Sep 4, 8:13 PM EDT | Tornado Warning | BGM | Susquehanna | 47 min |
| Sep 4, 8:35 PM EDT | Flash Flood Warning | BGM | Lackawanna, Wayne | 3 hr |
| Sep 9, 4:37 PM EDT | Flash Flood Warning | PBZ | Beaver | 3 hr |
| Sep 15, 6:07 AM EDT | Flash Flood Warning | PHI | Chester | 3 hr |
| Sep 15, 8:18 AM EDT | Flash Flood Warning | PHI | Berks, Montgomery | 4 hr |
| Sep 15, 8:47 AM EDT | Flash Flood Warning | PHI | Chester | 6 hr |
| Sep 15, 11:25 AM EDT | Flash Flood Warning | CTP | Lancaster | 3 hr |
| Sep 15, 12:10 PM EDT | Flash Flood Warning | PHI | Berks | 4 hr |
| Sep 15, 1:59 PM EDT | Flash Flood Warning | CTP | Lancaster | 6 hr |
| Sep 15, 3:24 PM EDT | Flash Flood Warning | PHI | Berks, Chester, Montgomery | 6 hr |
| Sep 15, 5:19 PM EDT | Flash Flood Warning | PHI | Chester | 6 hr |
| Sep 15, 6:33 PM EDT | Flash Flood Warning | PHI | Bucks, Lehigh, Northampton | 3 hr |
| Sep 23, 2:35 AM EDT | Flash Flood Warning | CTP | Adams | 3 hr |
| Sep 23, 2:38 AM EDT | Flash Flood Warning | CTP | Snyder | 3 hr |
| Sep 23, 3:20 AM EDT | Flash Flood Warning | CTP | York | 4 hr |
| Sep 23, 3:59 AM EDT | Flash Flood Warning | CTP | Dauphin | 3 hr |
| Sep 23, 4:05 AM EDT | Flash Flood Warning | CTP | Lancaster | 3 hr |
| Sep 23, 5:20 AM EDT | Flash Flood Warning | CTP | Adams, Dauphin, Lancaster, York | 4 hr |
| Sep 23, 8:01 AM EDT | Severe Thunderstorm Warning | PHI | Bucks | 44 min |
| Sep 23, 8:14 AM EDT | Tornado Warning | PHI | Bucks | 31 min |
| Sep 27, 12:06 AM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Crawford, Lawrence and 3 more | 84 min |
| Sep 27, 12:40 AM EDT | Tornado Watch | SPC | Beaver, Butler, Crawford, Forest, Lawrence, Mercer and 2 more | 5 hr |
| Sep 27, 2:35 AM EDT | Tornado Watch | SPC | Erie | 5 hr |
| Sep 27, 3:37 AM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Cambria, Cameron and 17 more | 113 min |
| Sep 27, 5:15 AM EDT | Mesoscale Discussion | SPC | Beaver, Crawford, Lawrence, Mercer, Venango, Warren | 60 min |
| Sep 27, 2:22 PM EDT | Mesoscale Discussion | SPC | Adams, Bedford, Bradford, Centre, Clinton, Columbia and 16 more | 113 min |
| Sep 27, 4:05 PM EDT | Severe Thunderstorm Watch | SPC | Bedford, Blair, Cambria, Cameron, Centre, Clearfield and 11 more | 5 hr |
| Sep 27, 5:39 PM EDT | Flash Flood Warning | CTP | Bedford | 3 hr |
| Sep 27, 6:18 PM EDT | Flash Flood Warning | CTP | Blair | 117 min |
| Sep 27, 6:47 PM EDT | Flash Flood Warning | CTP | Centre, Fulton, Huntingdon | 3 hr |
| Sep 27, 6:52 PM EDT | Mesoscale Discussion | SPC | Bedford, Blair, Centre, Clinton, Franklin, Fulton and 5 more | 53 min |
| Sep 27, 8:02 PM EDT | Flash Flood Warning | CTP | Blair | 118 min |
| Sep 28, 1:30 AM EDT | Flash Flood Warning | PHI | Bucks | 4 hr |
| Oct 14, 10:45 AM EDT | Mesoscale Discussion | SPC | Adams, Allegheny, Armstrong, Beaver, Bedford, Berks and 28 more | 90 min |
| Oct 14, 4:51 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 39 min |
| Oct 14, 4:55 PM EDT | Severe Thunderstorm Warning | PBZ | Lawrence | 35 min |
| Oct 14, 4:58 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 62 min |
| Oct 14, 5:14 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 61 min |
| Oct 14, 5:17 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 58 min |
| Oct 14, 5:19 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer, Venango | 56 min |
| Oct 14, 5:33 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 57 min |
| Oct 14, 5:37 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 53 min |
| Oct 14, 5:39 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 66 min |
| Oct 14, 5:46 PM EDT | Severe Thunderstorm Warning | CTP | Somerset | 44 min |
| Oct 14, 5:50 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 55 min |
| Oct 14, 5:51 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 54 min |
| Oct 14, 5:53 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 37 min |
| Oct 14, 6:09 PM EDT | Severe Thunderstorm Warning | CTP | Cambria, Clearfield, Elk | 66 min |
| Oct 14, 6:45 PM EDT | Mesoscale Discussion | SPC | Bedford, Blair, Cambria, Cameron, Centre, Clearfield and 6 more | 90 min |
| Oct 15, 12:12 AM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 48 min |
| Nov 5, 5:59 PM EST | Flash Flood Warning | PHI | Bucks, Chester, Montgomery | 3 hr |
| Nov 12, 6:37 PM EST | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Cambria, Clarion and 16 more | 53 min |
| Nov 12, 7:20 PM EST | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Cambria, Cameron and 18 more | 4 hr |
| Nov 12, 7:56 PM EST | Severe Thunderstorm Warning | CLE | Crawford | 64 min |
| Nov 12, 8:22 PM EST | Severe Thunderstorm Warning | PBZ | Mercer | 53 min |
| Nov 12, 8:37 PM EST | Severe Thunderstorm Warning | PBZ | Lawrence | 53 min |
| Nov 12, 8:51 PM EST | Severe Thunderstorm Warning | PBZ | Beaver | 54 min |
| Nov 12, 9:05 PM EST | Severe Thunderstorm Warning | PBZ | Washington | 55 min |
| Nov 12, 9:12 PM EST | Severe Thunderstorm Warning | PBZ | Butler | 63 min |
| Nov 12, 9:39 PM EST | Mesoscale Discussion | SPC | Allegheny, Armstrong, Bedford, Blair, Butler, Cambria and 16 more | 66 min |
| Nov 12, 9:47 PM EST | Severe Thunderstorm Warning | PBZ | Allegheny | 28 min |
| Nov 12, 10:01 PM EST | Severe Thunderstorm Warning | PBZ | Armstrong | 59 min |
| Nov 12, 10:03 PM EST | Severe Thunderstorm Warning | PBZ | Jefferson | 57 min |
| Nov 12, 10:08 PM EST | Severe Thunderstorm Warning | PBZ | Westmoreland | 52 min |
| Nov 12, 10:09 PM EST | Severe Thunderstorm Warning | PBZ | Indiana | 66 min |
| Nov 12, 10:11 PM EST | Severe Thunderstorm Warning | CTP | Clearfield | 49 min |
| Nov 12, 10:14 PM EST | Severe Thunderstorm Warning | PBZ | Fayette | 61 min |
| Nov 12, 11:56 PM EST | Severe Thunderstorm Warning | CTP | Lycoming | 34 min |
| Nov 19, 7:25 AM EST | Flash Flood Warning | PBZ | Greene | 6 hr |
| Nov 19, 7:50 AM EST | Flash Flood Warning | PBZ | Allegheny, Beaver, Washington | 6 hr |
| Nov 19, 8:38 AM EST | Flash Flood Warning | PBZ | Fayette, Westmoreland | 6 hr |
| Nov 19, 8:55 AM EST | Flash Flood Warning | PBZ | Armstrong, Butler, Lawrence | 5 hr |
| Nov 19, 9:33 AM EST | Flash Flood Warning | PBZ | Indiana | 5 hr |
| Nov 19, 9:48 AM EST | Flash Flood Warning | PBZ | Clarion, Forest, Jefferson, Venango | 5 hr |
| Nov 19, 10:43 AM EST | Flash Flood Warning | CTP | Cambria, Clearfield, Elk, Somerset | 4 hr |
| Nov 19, 11:31 AM EST | Flash Flood Warning | CTP | Bedford, Blair | 4 hr |
| Nov 19, 11:44 AM EST | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Nov 19, 11:47 AM EST | Flash Flood Warning | CTP | Cameron, McKean, Warren | 4 hr |
| Nov 19, 12:37 PM EST | Flash Flood Warning | CTP | Centre, Fulton, Huntingdon | 4 hr |
| Nov 19, 12:45 PM EST | Tornado Watch | SPC | Berks, Bucks, Chester, Dauphin, Delaware, Lancaster and 9 more | 5 hr |
| Nov 19, 1:35 PM EST | Flash Flood Warning | CTP | Clinton, Lycoming, Potter, Tioga | 4 hr |
| Nov 19, 1:56 PM EST | Severe Thunderstorm Warning | CTP | Lancaster, York | 64 min |
| Nov 19, 2:32 PM EST | Severe Thunderstorm Warning | PHI | Chester | 58 min |
| Nov 19, 2:56 PM EST | Mesoscale Discussion | SPC | Berks, Bucks, Chester, Delaware, Lancaster, Lebanon and 5 more | 2 hr |
| Nov 28, 2:50 PM EST | Severe Thunderstorm Warning | CTP | Adams, Franklin | 55 min |
| Dec 5, 12:20 PM EST | Mesoscale Discussion | SPC | Adams, Allegheny, Armstrong, Beaver, Bedford, Berks and 38 more | 6 hr |
| Dec 5, 6:48 PM EST | Mesoscale Discussion | SPC | Carbon, Lackawanna, Monroe, Northampton, Pike, Wayne | 4 hr |
| Dec 10, 9:47 PM EST | Flash Flood Warning | PBZ | Allegheny, Butler | 3 hr |
| Dec 10, 10:25 PM EST | Flash Flood Warning | PBZ | Washington | 3 hr |
| Dec 11, 10:30 AM EST | Flash Flood Warning | BGM | Susquehanna | 3 hr |
| Dec 11, 10:34 AM EST | Flash Flood Warning | BGM | Wyoming | 3 hr |
| Dec 14, 6:39 AM EST | Mesoscale Discussion | SPC | Bedford, Blair, Cambria, Centre, Clinton, Franklin and 11 more | 6 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 | 365 |
| Tornado Warning | 23 |
| Severe Thunderstorm Watch | 41 |
| Tornado Watch | 5 |
| Mesoscale Discussion | 133 |
| Flooding | |
| Flash Flood Warning | 255 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Washington County106
- Allegheny County99
- Greene County94
- Westmoreland County93
- Butler County92
- Beaver County91
- Fayette County87
- Lawrence County86
- Armstrong County82
- Mercer County81
- Venango County73
- Indiana County68
- Clarion County65
- Somerset County63
- Clearfield County61
- Bedford County58
- Cambria County58
- Jefferson County57
- Adams County56
- York County55
- Crawford County55
- Fulton County53
- Blair County52
- Huntingdon County52
- Forest County52
- Franklin County51
- Lancaster County47
- Centre County47
- Lycoming County43
- Warren County41
- Cumberland County41
- Bucks County41
- Cameron County41
- Clinton County41
- McKean County40
- Potter County40
- Chester County40
- Dauphin County40
- Perry County40
- Elk County40
27 more counties
- Juniata County39
- Berks County38
- Montgomery County38
- Mifflin County37
- Delaware County34
- Snyder County34
- Lebanon County33
- Schuylkill County33
- Susquehanna County31
- Union County31
- Northumberland County31
- Bradford County30
- Tioga County30
- Northampton County30
- Philadelphia County30
- Erie County29
- Luzerne County29
- Columbia County28
- Lehigh County26
- Carbon County26
- Monroe County26
- Wyoming County24
- Montour County23
- Sullivan County22
- Pike County19
- Lackawanna County16
- Wayne County16
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20022004
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Rebuilt daily.