Weather alerts in Pennsylvania, 1998
821 weather alerts in 1998, 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 1998. Tap one for its archive.
- Alerts
- 821
- Warnings
- 782
- Watches
- 39
- Advisories
- 0
- Busiest month
- June345 alerts
- Busiest day
- June 2, 199862 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 7, 4:37 PM EST | Flash Flood Warning | CTP | Elk, McKean, Warren | 6 hr |
| Jan 7, 9:48 PM EST | Flash Flood Warning | CLE | Crawford, Erie | 4 hr |
| Jan 7, 10:36 PM EST | Flash Flood Warning | CTP | Warren | 7 hr |
| Jan 8, 2:42 AM EST | Flash Flood Warning | CTP | Somerset | 6 hr |
| Jan 8, 5:55 AM EST | Flash Flood Warning | CTP | Warren | 3 hr |
| Jan 8, 7:39 AM EST | Severe Thunderstorm Warning | CTP | Adams, York | 66 min |
| Jan 8, 8:01 AM EST | Flash Flood Warning | PBZ | Beaver | 4 hr |
| Jan 8, 8:09 AM EST | Flash Flood Warning | CTP | Dauphin, Lebanon, Schuylkill | 4 hr |
| Jan 8, 8:09 AM EST | Flash Flood Warning | CTP | Adams, York | 4 hr |
| Jan 8, 8:09 AM EST | Flash Flood Warning | CTP | Lancaster | 4 hr |
| Jan 8, 8:16 AM EST | Flash Flood Warning | PBZ | Forest | 4 hr |
| Jan 8, 8:50 AM EST | Flash Flood Warning | CTP | Warren | 5 hr |
| Jan 8, 9:20 AM EST | Flash Flood Warning | CTP | McKean | 5 hr |
| Jan 8, 10:35 AM EST | Flash Flood Warning | CTP | Cumberland, Franklin, Perry | 4 hr |
| Jan 8, 10:55 AM EST | Flash Flood Warning | PBZ | Beaver | 3 hr |
| Jan 8, 10:55 AM EST | Flash Flood Warning | PBZ | Forest | 3 hr |
| Jan 8, 11:42 AM EST | Flash Flood Warning | CTP | Adams, York | 4 hr |
| Jan 8, 11:42 AM EST | Flash Flood Warning | CTP | Dauphin, Lancaster, Lebanon, Schuylkill | 4 hr |
| Jan 8, 12:04 PM EST | Flash Flood Warning | CTP | Potter | 4 hr |
| Jan 8, 12:26 PM EST | Flash Flood Warning | CTP | Juniata, Northumberland, Snyder | 4 hr |
| Jan 8, 12:26 PM EST | Flash Flood Warning | CTP | Columbia, Montour | 4 hr |
| Jan 8, 12:26 PM EST | Flash Flood Warning | CTP | Union | 4 hr |
| Jan 8, 1:28 PM EST | Flash Flood Warning | CTP | Lycoming, Sullivan | 4 hr |
| Jan 8, 1:31 PM EST | Flash Flood Warning | CTP | McKean, Warren | 4 hr |
| Jan 8, 2:02 PM EST | Flash Flood Warning | CTP | Bedford, Blair, Fulton, Huntingdon | 4 hr |
| Jan 8, 2:02 PM EST | Flash Flood Warning | CTP | Centre, Clinton | 4 hr |
| Jan 8, 2:02 PM EST | Flash Flood Warning | CTP | Mifflin | 4 hr |
| Jan 8, 2:42 PM EST | Flash Flood Warning | CTP | Cumberland, Franklin, Perry | 4 hr |
| Jan 8, 3:36 PM EST | Flash Flood Warning | CTP | Dauphin, Lancaster, Lebanon, Schuylkill | 6 hr |
| Jan 8, 3:36 PM EST | Flash Flood Warning | CTP | Adams, York | 6 hr |
| Jan 8, 3:52 PM EST | Flash Flood Warning | CTP | Potter | 6 hr |
| Jan 8, 4:17 PM EST | Flash Flood Warning | CTP | Cameron | 6 hr |
| Jan 8, 4:27 PM EST | Flash Flood Warning | CTP | Dauphin, Lancaster, Lebanon, York | 6 hr |
| Jan 8, 4:27 PM EST | Flash Flood Warning | CTP | Centre, Clinton, Mifflin, Union | 6 hr |
| Jan 8, 4:27 PM EST | Flash Flood Warning | CTP | Columbia, Juniata, Lycoming, Montour, Northumberland, Perry and 2 more | 6 hr |
| Jan 8, 4:27 PM EST | Flash Flood Warning | CTP | Sullivan | 6 hr |
| Jan 8, 4:27 PM EST | Flash Flood Warning | CTP | Adams, Cumberland | 6 hr |
| Jan 8, 4:43 PM EST | Flash Flood Warning | BGM | Bradford, Susquehanna, Wyoming | 3 hr |
| Jan 8, 7:47 PM EST | Flash Flood Warning | CLE | Crawford | 3 hr |
| Jan 8, 10:01 PM EST | Flash Flood Warning | CTP | Lycoming, Union | 6 hr |
| Jan 8, 10:45 PM EST | Flash Flood Warning | CLE | Crawford | 4 hr |
| Jan 9, 12:42 AM EST | Flash Flood Warning | PBZ | Beaver | 3 hr |
| Jan 9, 1:39 AM EST | Flash Flood Warning | PBZ | Washington | 2 hr |
| Jan 9, 2:17 AM EST | Severe Thunderstorm Warning | PBZ | Allegheny | 58 min |
| Jan 9, 2:42 AM EST | Flash Flood Warning | CTP | Warren | 6 hr |
| Jan 9, 2:43 AM EST | Severe Thunderstorm Warning | PBZ | Westmoreland | 32 min |
| Jan 9, 2:55 AM EST | Flash Flood Warning | CLE | Crawford, Erie | 4 hr |
| Jan 9, 3:03 AM EST | Severe Thunderstorm Warning | PBZ | Armstrong | 57 min |
| Jan 9, 3:28 AM EST | Severe Thunderstorm Warning | PBZ | Clarion | 62 min |
| Jan 9, 3:30 AM EST | Flash Flood Warning | PBZ | Clarion | 90 min |
| Jan 9, 3:40 AM EST | Severe Thunderstorm Warning | CTP | Adams, Cumberland | 55 min |
| Jan 9, 3:51 AM EST | Severe Thunderstorm Warning | PBZ | Forest | 69 min |
| Jan 9, 4:17 AM EST | Severe Thunderstorm Warning | CTP | Dauphin, York | 63 min |
| Jan 9, 4:44 AM EST | Severe Thunderstorm Warning | CTP | Lebanon, Schuylkill | 61 min |
| Jan 9, 4:44 AM EST | Severe Thunderstorm Warning | CTP | Northumberland | 61 min |
| Jan 9, 5:26 AM EST | Flash Flood Warning | CTP | Lycoming, Sullivan | 6 hr |
| Jan 9, 11:00 AM EST | Flash Flood Warning | CTP | Lycoming, Sullivan | 3 hr |
| Jan 9, 11:46 AM EST | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 34 min |
| Jan 9, 12:36 PM EST | Severe Thunderstorm Warning | BGM | Pike | 69 min |
| Jan 23, 6:14 PM EST | Flash Flood Warning | CTP | Lancaster | 5 hr |
| Feb 17, 5:28 PM EST | Severe Thunderstorm Warning | CTP | Cambria, Somerset | 62 min |
| Feb 18, 12:59 AM EST | Flash Flood Warning | CTP | Northumberland, Snyder, Union | 5 hr |
| Feb 18, 12:59 AM EST | Flash Flood Warning | CTP | Lycoming, Montour | 5 hr |
| Feb 18, 5:53 AM EST | Flash Flood Warning | CTP | Union | 2 hr |
| Feb 18, 7:55 AM EST | Flash Flood Warning | CTP | Union | 4 hr |
| Feb 18, 10:31 AM EST | Severe Thunderstorm Warning | PHI | Philadelphia | 34 min |
| Feb 18, 10:56 AM EST | Severe Thunderstorm Warning | PHI | Bucks | 34 min |
| Feb 28, 5:05 PM EST | Flash Flood Warning | BGM | Bradford | 4 hr |
| Mar 9, 5:47 PM EST | Severe Thunderstorm Warning | CTP | York | 48 min |
| Mar 9, 5:57 PM EST | Severe Thunderstorm Warning | CTP | Lancaster, Lebanon | 43 min |
| Mar 9, 6:41 PM EST | Severe Thunderstorm Warning | CTP | Lancaster | 59 min |
| Mar 9, 6:49 PM EST | Severe Thunderstorm Warning | PHI | Berks | 66 min |
| Mar 9, 7:26 PM EST | Tornado Warning | PHI | Berks | 34 min |
| Mar 20, 9:54 PM EST | Flash Flood Warning | CTP | Franklin | 6 hr |
| Mar 20, 11:29 PM EST | Flash Flood Warning | CTP | Cumberland, Perry | 6 hr |
| Mar 20, 11:29 PM EST | Flash Flood Warning | CTP | Adams | 6 hr |
| Mar 21, 12:28 AM EST | Flash Flood Warning | CTP | Juniata, Snyder | 6 hr |
| Mar 21, 3:14 AM EST | Flash Flood Warning | CTP | Lancaster, York | 6 hr |
| Mar 21, 3:43 AM EST | Flash Flood Warning | CTP | Franklin | 6 hr |
| Mar 21, 4:48 AM EST | Flash Flood Warning | CTP | Juniata, Perry, Snyder | 5 hr |
| Mar 21, 4:48 AM EST | Flash Flood Warning | CTP | Adams, Cumberland | 5 hr |
| Mar 21, 9:40 AM EST | Flash Flood Warning | CTP | Cumberland, Perry, York | 5 hr |
| Mar 21, 9:40 AM EST | Flash Flood Warning | CTP | Lancaster | 5 hr |
| Mar 21, 9:53 AM EST | Flash Flood Warning | CTP | Cumberland, Perry, York | 5 hr |
| Mar 21, 9:53 AM EST | Flash Flood Warning | CTP | Lancaster | 5 hr |
| Mar 21, 11:42 AM EST | Flash Flood Warning | CTP | Franklin | 6 hr |
| Apr 1, 11:42 AM EST | Severe Thunderstorm Warning | CTP | Adams, Cumberland, Franklin | 63 min |
| Apr 1, 2:23 PM EST | Severe Thunderstorm Warning | PHI | Chester | 32 min |
| Apr 1, 3:38 PM EST | Flash Flood Warning | PHI | Chester | 3 hr |
| Apr 1, 6:20 PM EST | Flash Flood Warning | PHI | Chester, Montgomery | 3 hr |
| Apr 1, 6:46 PM EST | Severe Thunderstorm Warning | PHI | Bucks | 34 min |
| Apr 1, 7:15 PM EST | Tornado Watch | SPC | Adams, Chester, Delaware, Lancaster, Montgomery, Philadelphia and 1 more | 5 hr |
| Apr 1, 7:44 PM EST | Severe Thunderstorm Warning | CTP | Lancaster, York | 61 min |
| Apr 1, 8:10 PM EST | Flash Flood Warning | PHI | Chester, Montgomery | 110 min |
| Apr 1, 9:25 PM EST | Severe Thunderstorm Warning | PHI | Bucks | 50 min |
| Apr 1, 9:43 PM EST | Severe Thunderstorm Warning | PHI | Chester | 32 min |
| Apr 1, 9:56 PM EST | Flash Flood Warning | PHI | Chester, Montgomery | 2 hr |
| Apr 2, 12:30 AM EST | Flash Flood Warning | PHI | Bucks | 3 hr |
| Apr 8, 3:07 PM EDT | Severe Thunderstorm Warning | CTP | Adams, York | 63 min |
| Apr 8, 3:25 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 60 min |
| Apr 8, 4:02 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 28 min |
| Apr 8, 4:14 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 61 min |
| Apr 8, 4:23 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 52 min |
| Apr 8, 4:28 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 62 min |
| Apr 8, 4:45 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 60 min |
| Apr 8, 4:51 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 54 min |
| Apr 8, 5:05 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 40 min |
| Apr 8, 5:10 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 50 min |
| Apr 8, 5:16 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 44 min |
| Apr 8, 5:28 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 47 min |
| Apr 8, 5:37 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 53 min |
| Apr 8, 5:50 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 40 min |
| Apr 8, 5:54 PM EDT | Severe Thunderstorm Warning | CTP | Cambria, Somerset | 61 min |
| Apr 8, 5:57 PM EDT | Severe Thunderstorm Warning | CTP | Fulton | 33 min |
| Apr 8, 6:13 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 47 min |
| Apr 8, 6:23 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Blair | 52 min |
| Apr 8, 6:23 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 52 min |
| Apr 8, 6:32 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Clinton | 48 min |
| Apr 9, 10:09 AM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 51 min |
| Apr 9, 11:24 AM EDT | Flash Flood Warning | CLE | Crawford | 2 hr |
| Apr 9, 1:45 PM EDT | Flash Flood Warning | PBZ | Jefferson | 4 hr |
| Apr 9, 8:25 PM EDT | Flash Flood Warning | PHI | Chester | 5 hr |
| Apr 9, 10:00 PM EDT | Flash Flood Warning | CTP | Lancaster | 5 hr |
| Apr 10, 1:31 AM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Apr 10, 4:31 AM EDT | Flash Flood Warning | PBZ | Westmoreland | 2 hr |
| Apr 10, 4:33 AM EDT | Flash Flood Warning | PBZ | Westmoreland | 2 hr |
| Apr 10, 6:25 AM EDT | Flash Flood Warning | PBZ | Westmoreland | 4 hr |
| Apr 14, 8:46 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Westmoreland | 29 min |
| Apr 16, 11:23 AM EDT | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Apr 16, 11:25 AM EDT | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Apr 16, 11:45 AM EDT | Flash Flood Warning | PBZ | Mercer | 2 hr |
| Apr 17, 2:35 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Dauphin | 60 min |
| Apr 17, 2:55 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 45 min |
| Apr 17, 3:00 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bucks, Carbon, Chester, Columbia and 19 more | 6 hr |
| Apr 17, 3:27 PM EDT | Severe Thunderstorm Warning | CTP | York | 63 min |
| Apr 17, 3:49 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 36 min |
| Apr 17, 3:53 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 47 min |
| Apr 17, 4:08 PM EDT | Tornado Warning | CTP | York | 32 min |
| Apr 17, 4:24 PM EDT | Tornado Warning | CTP | Lancaster | 36 min |
| Apr 17, 4:26 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 34 min |
| Apr 17, 4:54 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 36 min |
| Apr 17, 5:02 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 48 min |
| Apr 19, 4:25 PM EDT | Flash Flood Warning | CTP | Fulton, Huntingdon | 6 hr |
| Apr 19, 5:51 PM EDT | Flash Flood Warning | CTP | Blair, Centre | 5 hr |
| Apr 19, 6:40 PM EDT | Flash Flood Warning | CTP | Juniata, Mifflin | 4 hr |
| Apr 19, 6:40 PM EDT | Flash Flood Warning | CTP | Franklin | 4 hr |
| Apr 19, 7:18 PM EDT | Flash Flood Warning | CTP | Northumberland, Snyder, Union | 4 hr |
| Apr 19, 7:18 PM EDT | Flash Flood Warning | CTP | Montour | 4 hr |
| Apr 19, 10:25 PM EDT | Flash Flood Warning | CTP | Huntingdon | 8 hr |
| Apr 20, 6:16 AM EDT | Flash Flood Warning | CTP | Huntingdon | 6 hr |
| Apr 26, 5:14 PM EDT | Flash Flood Warning | CTP | Blair, Cambria, Centre, Clearfield | 4 hr |
| Apr 26, 5:14 PM EDT | Flash Flood Warning | CTP | Huntingdon | 4 hr |
| Apr 26, 5:37 PM EDT | Flash Flood Warning | CTP | Blair, Cambria, Clearfield | 3 hr |
| Apr 26, 5:37 PM EDT | Flash Flood Warning | CTP | Centre, Huntingdon | 3 hr |
| Apr 26, 7:28 PM EDT | Flash Flood Warning | PBZ | Allegheny | 2 hr |
| May 4, 10:25 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 45 min |
| May 5, 6:15 PM EDT | Flash Flood Warning | CTP | York | 4 hr |
| May 5, 6:43 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 47 min |
| May 5, 6:55 PM EDT | Severe Thunderstorm Warning | CTP | Somerset | 35 min |
| May 5, 7:16 PM EDT | Flash Flood Warning | CTP | Cambria, Somerset | 3 hr |
| May 5, 7:32 PM EDT | Flash Flood Warning | CTP | Dauphin | 3 hr |
| May 5, 7:40 PM EDT | Flash Flood Warning | CTP | Bedford | 50 min |
| May 5, 7:40 PM EDT | Severe Thunderstorm Warning | CTP | Bedford | 50 min |
| May 5, 7:47 PM EDT | Flash Flood Warning | PBZ | Indiana | 3 hr |
| May 5, 8:21 PM EDT | Flash Flood Warning | CTP | Bedford | 6 hr |
| May 5, 8:42 PM EDT | Flash Flood Warning | PBZ | Armstrong | 3 hr |
| May 5, 10:13 PM EDT | Flash Flood Warning | CTP | Cambria, Somerset | 4 hr |
| May 6, 3:02 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 63 min |
| May 6, 3:06 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 64 min |
| May 6, 4:15 PM EDT | Flash Flood Warning | CTP | Lancaster | 3 hr |
| May 8, 7:00 PM EDT | Flash Flood Warning | CTP | Franklin | 6 hr |
| May 8, 9:12 PM EDT | Flash Flood Warning | PHI | Montgomery | 5 hr |
| May 16, 4:16 PM EDT | Severe Thunderstorm Warning | CTP | McKean | 64 min |
| May 16, 5:05 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 57 min |
| May 16, 5:08 PM EDT | Severe Thunderstorm Warning | CTP | Somerset | 62 min |
| May 16, 5:41 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 49 min |
| May 16, 6:12 PM EDT | Severe Thunderstorm Warning | CTP | Somerset | 48 min |
| May 16, 6:35 PM EDT | Flash Flood Warning | CTP | Somerset | 6 hr |
| May 16, 8:26 PM EDT | Severe Thunderstorm Warning | CTP | Tioga | 44 min |
| May 19, 7:42 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Butler | 58 min |
| May 19, 7:42 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 58 min |
| May 19, 7:59 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Westmoreland | 70 min |
| May 24, 6:25 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 50 min |
| May 24, 6:56 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 49 min |
| May 24, 11:23 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 57 min |
| May 25, 2:21 AM EDT | Severe Thunderstorm Warning | PBZ | Forest | 29 min |
| May 25, 5:05 AM EDT | Severe Thunderstorm Warning | CTP | Centre, Clearfield | 55 min |
| May 25, 5:37 AM EDT | Severe Thunderstorm Warning | CTP | Centre | 63 min |
| May 25, 5:42 AM EDT | Severe Thunderstorm Warning | CTP | Centre | 58 min |
| May 25, 6:00 AM EDT | Severe Thunderstorm Warning | CTP | Mifflin, Snyder | 50 min |
| May 25, 6:43 AM EDT | Severe Thunderstorm Warning | CTP | Snyder | 17 min |
| May 25, 7:30 AM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 30 min |
| May 25, 7:32 AM EDT | Severe Thunderstorm Warning | PHI | Berks | 63 min |
| May 25, 7:45 AM EDT | Severe Thunderstorm Warning | CTP | Tioga | 35 min |
| May 25, 7:49 AM EDT | Severe Thunderstorm Warning | BGM | Bradford | 61 min |
| May 25, 8:23 AM EDT | Severe Thunderstorm Warning | PHI | Montgomery | 47 min |
| May 25, 8:46 AM EDT | Severe Thunderstorm Warning | PHI | Bucks | 64 min |
| May 25, 9:05 AM EDT | Severe Thunderstorm Warning | PHI | Montgomery, Philadelphia | 50 min |
| May 29, 1:22 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 33 min |
| May 29, 2:00 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Bedford, Blair, Bradford and 33 more | 6 hr |
| May 29, 2:17 PM EDT | Severe Thunderstorm Warning | CTP | McKean | 63 min |
| May 29, 2:48 PM EDT | Severe Thunderstorm Warning | CTP | Potter | 62 min |
| May 29, 3:00 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 75 min |
| May 29, 3:24 PM EDT | Severe Thunderstorm Warning | CTP | Elk | 61 min |
| May 29, 3:40 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Clearfield | 60 min |
| May 29, 3:44 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 31 min |
| May 29, 3:48 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 72 min |
| May 29, 3:51 PM EDT | Severe Thunderstorm Warning | CTP | Tioga | 64 min |
| May 29, 4:03 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Clinton | 97 min |
| May 29, 4:03 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 97 min |
| May 29, 4:07 PM EDT | Severe Thunderstorm Warning | CTP | Sullivan | 63 min |
| May 29, 4:07 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana, Jefferson | 53 min |
| May 29, 4:11 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 64 min |
| May 29, 4:15 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 45 min |
| May 29, 4:17 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 93 min |
| May 29, 4:20 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 55 min |
| May 29, 4:26 PM EDT | Severe Thunderstorm Warning | BGM | Wyoming | 79 min |
| May 29, 4:40 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne | 90 min |
| May 29, 4:55 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 50 min |
| May 29, 4:58 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 62 min |
| May 29, 5:00 PM EDT | Severe Thunderstorm Watch | SPC | Berks, Bucks, Carbon, Columbia, Dauphin, Juniata and 14 more | 6 hr |
| May 29, 5:06 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Montour, Northumberland | 64 min |
| May 29, 5:06 PM EDT | Severe Thunderstorm Warning | CTP | Union | 64 min |
| May 29, 5:10 PM EDT | Severe Thunderstorm Warning | CTP | Blair, Cambria, Clearfield | 60 min |
| May 29, 5:22 PM EDT | Severe Thunderstorm Warning | BGM | Pike | 78 min |
| May 29, 5:23 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 52 min |
| May 29, 5:30 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 65 min |
| May 29, 5:42 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 48 min |
| May 29, 6:07 PM EDT | Severe Thunderstorm Warning | CTP | Somerset | 63 min |
| May 29, 6:07 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Washington | 53 min |
| May 29, 6:11 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin | 49 min |
| May 29, 6:20 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Westmoreland | 70 min |
| May 29, 6:24 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 61 min |
| May 29, 6:28 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Franklin, Perry | 62 min |
| May 29, 6:42 PM EDT | Severe Thunderstorm Warning | CTP | Lebanon | 63 min |
| May 29, 6:43 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh | 47 min |
| May 29, 6:59 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin | 31 min |
| May 29, 7:06 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 89 min |
| May 29, 7:06 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 89 min |
| May 29, 7:15 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Chester, Cumberland, Delaware, Franklin, Lancaster and 2 more | 6 hr |
| May 29, 8:14 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 46 min |
| May 29, 9:10 PM EDT | Severe Thunderstorm Warning | PHI | Delaware | 30 min |
| May 31, 10:30 AM EDT | Severe Thunderstorm Watch | SPC | Beaver, Butler, Crawford, Erie, Lawrence, Mercer and 1 more | 5 hr |
| May 31, 11:34 AM EDT | Severe Thunderstorm Warning | CLE | Erie | 46 min |
| May 31, 12:12 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 48 min |
| May 31, 12:21 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 49 min |
| May 31, 12:35 PM EDT | Tornado Warning | CLE | Crawford | 50 min |
| May 31, 12:50 PM EDT | Tornado Warning | CTP | Warren | 60 min |
| May 31, 1:24 PM EDT | Severe Thunderstorm Warning | CTP | McKean | 61 min |
| May 31, 3:00 PM EDT | Tornado Watch | SPC | Bradford, Susquehanna, Wayne, Wyoming | 5 hr |
| May 31, 3:29 PM EDT | Severe Thunderstorm Warning | CTP | Cameron | 46 min |
| May 31, 3:30 PM EDT | Tornado Watch | SPC | Beaver, Butler, Cameron, Clarion, Crawford, Elk and 10 more | 7 hr |
| May 31, 3:58 PM EDT | Severe Thunderstorm Warning | CTP | Potter | 32 min |
| May 31, 4:01 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 64 min |
| May 31, 4:25 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming, Sullivan | 65 min |
| May 31, 4:42 PM EDT | Tornado Warning | CLE | Erie | 48 min |
| May 31, 5:00 PM EDT | Tornado Watch | SPC | Berks, Bucks, Carbon, Centre, Chester, Clinton and 25 more | 5 hr |
| May 31, 5:12 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 48 min |
| May 31, 5:19 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 76 min |
| May 31, 5:22 PM EDT | Tornado Warning | CTP | Lycoming | 33 min |
| May 31, 5:32 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 63 min |
| May 31, 5:35 PM EDT | Tornado Warning | CTP | Columbia, Sullivan | 50 min |
| May 31, 5:45 PM EDT | Tornado Warning | BGM | Bradford | 65 min |
| May 31, 5:48 PM EDT | Severe Thunderstorm Warning | PHI | Carbon | 32 min |
| May 31, 5:52 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 63 min |
| May 31, 6:07 PM EDT | Tornado Warning | BGM | Luzerne | 63 min |
| May 31, 6:13 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Beaver, Washington | 62 min |
| May 31, 6:26 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna | 64 min |
| May 31, 6:26 PM EDT | Tornado Warning | CTP | McKean | 34 min |
| May 31, 6:30 PM EDT | Tornado Watch | SPC | Allegheny, Armstrong, Bedford, Blair, Cambria, Clearfield and 7 more | 7 hr |
| May 31, 6:44 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 61 min |
| May 31, 6:45 PM EDT | Severe Thunderstorm Warning | BGM | Pike, Wayne | 65 min |
| May 31, 6:48 PM EDT | Severe Thunderstorm Warning | PBZ | Forest, Mercer, Venango | 57 min |
| May 31, 6:50 PM EDT | Severe Thunderstorm Warning | CTP | Potter | 65 min |
| May 31, 6:56 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Westmoreland | 64 min |
| May 31, 6:59 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 51 min |
| May 31, 7:07 PM EDT | Tornado Warning | BGM | Pike, Wayne | 63 min |
| May 31, 7:07 PM EDT | Severe Thunderstorm Warning | CTP | Elk, McKean | 63 min |
| May 31, 7:12 PM EDT | Tornado Warning | BGM | Pike, Wayne | 63 min |
| May 31, 7:15 PM EDT | Tornado Warning | PBZ | Washington | 45 min |
| May 31, 7:20 PM EDT | Severe Thunderstorm Warning | CTP | Tioga | 65 min |
| May 31, 7:20 PM EDT | Severe Thunderstorm Warning | CTP | Cameron | 65 min |
| May 31, 7:20 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 55 min |
| May 31, 7:23 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne | 62 min |
| May 31, 7:28 PM EDT | Tornado Warning | CTP | Elk | 62 min |
| May 31, 7:33 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Greene | 57 min |
| May 31, 7:35 PM EDT | Tornado Warning | CTP | Tioga | 50 min |
| May 31, 7:45 PM EDT | Tornado Warning | PBZ | Fayette | 45 min |
| May 31, 7:53 PM EDT | Tornado Warning | CTP | Cameron | 62 min |
| May 31, 7:56 PM EDT | Tornado Warning | BGM | Lackawanna | 64 min |
| May 31, 7:56 PM EDT | Severe Thunderstorm Warning | CTP | Potter | 64 min |
| May 31, 8:00 PM EDT | Tornado Watch | SPC | Bradford, Susquehanna, Wayne | 6 hr |
| May 31, 8:04 PM EDT | Tornado Warning | BGM | Pike, Wayne | 66 min |
| May 31, 8:07 PM EDT | Tornado Warning | BGM | Bradford | 63 min |
| May 31, 8:10 PM EDT | Tornado Warning | CTP | Lebanon | 35 min |
| May 31, 8:11 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 64 min |
| May 31, 8:12 PM EDT | Tornado Warning | CTP | Clinton, Potter | 78 min |
| May 31, 8:15 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 65 min |
| May 31, 8:22 PM EDT | Tornado Warning | CTP | Somerset | 38 min |
| May 31, 8:24 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 91 min |
| May 31, 8:24 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 91 min |
| May 31, 8:29 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 66 min |
| May 31, 8:37 PM EDT | Tornado Warning | PHI | Berks | 33 min |
| May 31, 8:38 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 57 min |
| May 31, 8:45 PM EDT | Tornado Warning | CTP | Bedford, Somerset | 60 min |
| May 31, 8:50 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 50 min |
| May 31, 8:56 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 34 min |
| May 31, 9:01 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Montour, Northumberland, Union | 89 min |
| May 31, 9:01 PM EDT | Severe Thunderstorm Warning | CTP | Sullivan | 89 min |
| May 31, 9:04 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 56 min |
| May 31, 9:06 PM EDT | Tornado Warning | BGM | Wyoming | 64 min |
| May 31, 9:07 PM EDT | Tornado Warning | PHI | Berks, Lehigh | 48 min |
| May 31, 9:14 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 46 min |
| May 31, 9:19 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 61 min |
| May 31, 9:31 PM EDT | Tornado Warning | BGM | Pike | 89 min |
| May 31, 9:32 PM EDT | Tornado Warning | CTP | Bedford | 28 min |
| May 31, 9:37 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna | 63 min |
| May 31, 9:39 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 51 min |
| May 31, 9:39 PM EDT | Tornado Warning | PHI | Berks, Chester | 36 min |
| May 31, 9:41 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 49 min |
| May 31, 9:43 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 62 min |
| May 31, 9:43 PM EDT | Tornado Warning | PHI | Bucks | 32 min |
| May 31, 9:45 PM EDT | Severe Thunderstorm Warning | CTP | Cambria, Somerset | 60 min |
| May 31, 9:45 PM EDT | Severe Thunderstorm Warning | CTP | Blair | 60 min |
| May 31, 9:45 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 45 min |
| May 31, 9:46 PM EDT | Severe Thunderstorm Warning | CTP | Fulton | 29 min |
| May 31, 9:56 PM EDT | Tornado Warning | BGM | Wayne | 64 min |
| May 31, 10:00 PM EDT | Tornado Watch | SPC | Berks, Bucks, Carbon, Chester, Columbia, Dauphin and 15 more | 6 hr |
| May 31, 10:01 PM EDT | Tornado Warning | PHI | Monroe | 34 min |
| May 31, 10:03 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 57 min |
| May 31, 10:19 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 56 min |
| May 31, 10:21 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 49 min |
| May 31, 10:24 PM EDT | Severe Thunderstorm Warning | CTP | Bedford | 66 min |
| May 31, 10:39 PM EDT | Tornado Warning | CTP | Bedford | 66 min |
| May 31, 10:48 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 62 min |
| May 31, 10:52 PM EDT | Severe Thunderstorm Warning | CTP | Fulton | 38 min |
| May 31, 11:01 PM EDT | Severe Thunderstorm Warning | PHI | Northampton | 34 min |
| May 31, 11:32 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 48 min |
| May 31, 11:36 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Cumberland | 64 min |
| May 31, 11:47 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, York | 93 min |
| Jun 1, 12:09 AM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 76 min |
| Jun 1, 12:17 AM EDT | Severe Thunderstorm Warning | PHI | Berks | 48 min |
| Jun 1, 12:40 AM EDT | Severe Thunderstorm Warning | PHI | Chester | 50 min |
| Jun 1, 12:54 AM EDT | Severe Thunderstorm Warning | PHI | Bucks | 31 min |
| Jun 1, 1:00 AM EDT | Severe Thunderstorm Warning | PHI | Delaware | 50 min |
| Jun 1, 1:15 AM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 35 min |
| Jun 2, 3:51 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 64 min |
| Jun 2, 4:03 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 47 min |
| Jun 2, 4:15 PM EDT | Tornado Watch | SPC | Allegheny, Armstrong, Beaver, Bedford, Blair, Butler and 24 more | 6 hr |
| Jun 2, 4:29 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 66 min |
| Jun 2, 4:33 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 57 min |
| Jun 2, 4:46 PM EDT | Tornado Warning | CTP | Dauphin, Northumberland | 64 min |
| Jun 2, 4:46 PM EDT | Tornado Warning | CTP | Snyder | 64 min |
| Jun 2, 4:49 PM EDT | Severe Thunderstorm Warning | PBZ | Venango | 56 min |
| Jun 2, 4:57 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Lawrence | 63 min |
| Jun 2, 5:01 PM EDT | Tornado Warning | CTP | Union | 59 min |
| Jun 2, 5:07 PM EDT | Tornado Warning | CTP | Schuylkill | 93 min |
| Jun 2, 5:10 PM EDT | Tornado Warning | CTP | McKean, Warren | 95 min |
| Jun 2, 5:13 PM EDT | Tornado Warning | CTP | Columbia, Montour | 62 min |
| Jun 2, 5:15 PM EDT | Tornado Watch | SPC | Adams, Berks, Bradford, Bucks, Carbon, Centre and 33 more | 6 hr |
| Jun 2, 5:17 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Butler | 58 min |
| Jun 2, 5:25 PM EDT | Tornado Warning | CTP | Cumberland, Dauphin, York | 45 min |
| Jun 2, 5:25 PM EDT | Tornado Warning | PBZ | Beaver | 45 min |
| Jun 2, 5:29 PM EDT | Tornado Warning | PBZ | Allegheny | 51 min |
| Jun 2, 5:30 PM EDT | Tornado Warning | CTP | Sullivan | 60 min |
| Jun 2, 5:40 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 50 min |
| Jun 2, 5:50 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 55 min |
| Jun 2, 5:54 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 51 min |
| Jun 2, 5:55 PM EDT | Tornado Warning | CTP | Potter | 75 min |
| Jun 2, 6:00 PM EDT | Tornado Warning | CTP | Clearfield, Elk | 75 min |
| Jun 2, 6:03 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 62 min |
| Jun 2, 6:09 PM EDT | Tornado Warning | PBZ | Westmoreland | 61 min |
| Jun 2, 6:13 PM EDT | Tornado Warning | PBZ | Allegheny | 27 min |
| Jun 2, 6:15 PM EDT | Tornado Warning | CTP | Adams, Cumberland, York | 75 min |
| Jun 2, 6:16 PM EDT | Severe Thunderstorm Warning | BGM | Wyoming | 64 min |
| Jun 2, 6:17 PM EDT | Tornado Warning | CTP | Lebanon | 33 min |
| Jun 2, 6:20 PM EDT | Severe Thunderstorm Warning | PBZ | Lawrence, Mercer | 60 min |
| Jun 2, 6:25 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 65 min |
| Jun 2, 6:25 PM EDT | Tornado Warning | PHI | Berks | 60 min |
| Jun 2, 6:32 PM EDT | Tornado Warning | CTP | Dauphin, Northumberland, Schuylkill | 78 min |
| Jun 2, 6:35 PM EDT | Flash Flood Warning | PBZ | Allegheny, Westmoreland | 2 hr |
| Jun 2, 6:36 PM EDT | Tornado Warning | PBZ | Jefferson | 59 min |
| Jun 2, 6:39 PM EDT | Tornado Warning | CTP | Tioga | 91 min |
| Jun 2, 6:42 PM EDT | Tornado Warning | CTP | Somerset | 88 min |
| Jun 2, 6:45 PM EDT | Tornado Warning | PBZ | Fayette | 45 min |
| Jun 2, 6:53 PM EDT | Severe Thunderstorm Warning | PBZ | Venango | 57 min |
| Jun 2, 6:56 PM EDT | Tornado Warning | PBZ | Indiana | 34 min |
| Jun 2, 6:58 PM EDT | Tornado Warning | PBZ | Beaver, Lawrence | 62 min |
| Jun 2, 7:01 PM EDT | Tornado Warning | CTP | Clearfield | 64 min |
| Jun 2, 7:05 PM EDT | Tornado Warning | CTP | Blair, Cambria | 65 min |
| Jun 2, 7:05 PM EDT | Tornado Warning | PBZ | Allegheny, Butler | 70 min |
| Jun 2, 7:14 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 61 min |
| Jun 2, 7:15 PM EDT | Flash Flood Warning | PBZ | Beaver | 105 min |
| Jun 2, 7:21 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 64 min |
| Jun 2, 7:23 PM EDT | Tornado Warning | CTP | Centre | 62 min |
| Jun 2, 7:23 PM EDT | Tornado Warning | PHI | Berks | 62 min |
| Jun 2, 7:27 PM EDT | Tornado Warning | CTP | Bedford | 78 min |
| Jun 2, 7:28 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 62 min |
| Jun 2, 7:30 PM EDT | Tornado Warning | CTP | Lancaster, York | 35 min |
| Jun 2, 7:33 PM EDT | Tornado Warning | CTP | Potter | 62 min |
| Jun 2, 7:36 PM EDT | Tornado Warning | CTP | Tioga | 94 min |
| Jun 2, 7:40 PM EDT | Flash Flood Warning | PBZ | Allegheny, Westmoreland | 2 hr |
| Jun 2, 7:42 PM EDT | Tornado Warning | BGM | Bradford | 63 min |
| Jun 2, 7:45 PM EDT | Tornado Warning | CTP | Huntingdon | 80 min |
| Jun 2, 7:49 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery | 46 min |
| Jun 2, 7:50 PM EDT | Tornado Warning | CTP | Elk | 65 min |
| Jun 2, 7:53 PM EDT | Tornado Warning | PBZ | Westmoreland | 67 min |
| Jun 2, 7:57 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 58 min |
| Jun 2, 8:01 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 94 min |
| Jun 2, 8:02 PM EDT | Tornado Warning | CTP | Cameron | 63 min |
| Jun 2, 8:07 PM EDT | Tornado Warning | PBZ | Allegheny | 53 min |
| Jun 2, 8:10 PM EDT | Tornado Warning | CTP | Juniata, Mifflin | 75 min |
| Jun 2, 8:13 PM EDT | Tornado Warning | CTP | Somerset | 92 min |
| Jun 2, 8:15 PM EDT | Tornado Warning | PBZ | Washington | 60 min |
| Jun 2, 8:24 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 31 min |
| Jun 2, 8:34 PM EDT | Tornado Warning | BGM | Susquehanna, Wyoming | 61 min |
| Jun 2, 8:40 PM EDT | Tornado Warning | PBZ | Fayette | 50 min |
| Jun 2, 8:48 PM EDT | Tornado Warning | PBZ | Westmoreland | 57 min |
| Jun 2, 8:52 PM EDT | Tornado Warning | CTP | Centre | 63 min |
| Jun 2, 8:57 PM EDT | Tornado Warning | CTP | Union | 48 min |
| Jun 2, 9:04 PM EDT | Tornado Warning | CTP | Montour, Northumberland | 61 min |
| Jun 2, 9:05 PM EDT | Tornado Warning | BGM | Lackawanna | 50 min |
| Jun 2, 9:10 PM EDT | Tornado Warning | CTP | Huntingdon, Mifflin | 45 min |
| Jun 2, 9:12 PM EDT | Tornado Warning | CTP | Snyder | 33 min |
| Jun 2, 9:12 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 33 min |
| Jun 2, 9:13 PM EDT | Tornado Warning | PBZ | Greene | 47 min |
| Jun 2, 9:19 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 46 min |
| Jun 2, 9:23 PM EDT | Tornado Warning | PBZ | Fayette | 52 min |
| Jun 2, 9:25 PM EDT | Tornado Warning | CTP | Columbia, Schuylkill | 75 min |
| Jun 2, 9:37 PM EDT | Tornado Warning | BGM | Bradford | 48 min |
| Jun 2, 9:45 PM EDT | Severe Thunderstorm Warning | BGM | Wyoming | 65 min |
| Jun 2, 9:53 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 62 min |
| Jun 2, 9:55 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 60 min |
| Jun 2, 10:03 PM EDT | Tornado Warning | BGM | Wyoming | 32 min |
| Jun 2, 10:15 PM EDT | Tornado Warning | BGM | Lackawanna | 45 min |
| Jun 2, 10:20 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 50 min |
| Jun 2, 10:35 PM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 20 min |
| Jun 12, 8:15 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Beaver, Butler, Clarion, Crawford, Forest and 6 more | 6 hr |
| Jun 12, 10:07 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 53 min |
| Jun 12, 10:09 PM EDT | Severe Thunderstorm Warning | PBZ | Lawrence | 59 min |
| Jun 12, 10:52 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 58 min |
| Jun 12, 10:57 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 43 min |
| Jun 12, 11:00 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 29 min |
| Jun 13, 8:55 AM EDT | Severe Thunderstorm Warning | PHI | Montgomery | 45 min |
| Jun 13, 10:43 AM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 57 min |
| Jun 13, 11:16 AM EDT | Severe Thunderstorm Warning | CTP | Somerset | 59 min |
| Jun 13, 12:58 PM EDT | Severe Thunderstorm Warning | CTP | Blair | 47 min |
| Jun 13, 1:29 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 66 min |
| Jun 13, 1:30 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 45 min |
| Jun 13, 1:37 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 44 min |
| Jun 13, 1:51 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Washington | 59 min |
| Jun 13, 2:38 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 17 min |
| Jun 13, 2:50 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 45 min |
| Jun 13, 2:52 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 18 min |
| Jun 13, 2:54 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 61 min |
| Jun 13, 3:12 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 58 min |
| Jun 13, 3:56 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 59 min |
| Jun 13, 5:09 PM EDT | Flash Flood Warning | CTP | Schuylkill | 3 hr |
| Jun 13, 5:09 PM EDT | Flash Flood Warning | CTP | Lancaster | 3 hr |
| Jun 13, 6:07 PM EDT | Flash Flood Warning | BGM | Susquehanna | 4 hr |
| Jun 13, 7:08 PM EDT | Flash Flood Warning | BGM | Bradford | 4 hr |
| Jun 14, 2:36 AM EDT | Flash Flood Warning | PHI | Philadelphia | 4 hr |
| Jun 15, 1:36 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Somerset | 49 min |
| Jun 15, 6:03 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 117 min |
| Jun 16, 3:00 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 60 min |
| Jun 16, 3:52 PM EDT | Flash Flood Warning | CLE | Erie | 3 hr |
| Jun 16, 4:00 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Allegheny, Bedford, Berks, Blair, Cambria and 16 more | 6 hr |
| Jun 16, 4:01 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 49 min |
| Jun 16, 4:05 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Greene, Washington | 60 min |
| Jun 16, 4:23 PM EDT | Flash Flood Warning | CLE | Crawford | 2 hr |
| Jun 16, 4:36 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 54 min |
| Jun 16, 4:36 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Westmoreland | 54 min |
| Jun 16, 4:53 PM EDT | Severe Thunderstorm Warning | CTP | Somerset | 57 min |
| Jun 16, 5:05 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Butler, Lawrence | 60 min |
| Jun 16, 5:22 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Armstrong, Indiana, Westmoreland | 58 min |
| Jun 16, 5:32 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 58 min |
| Jun 16, 5:50 PM EDT | Severe Thunderstorm Warning | CTP | Blair, Clearfield | 60 min |
| Jun 16, 5:50 PM EDT | Severe Thunderstorm Warning | CTP | Bedford | 60 min |
| Jun 16, 6:08 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Franklin | 72 min |
| Jun 16, 6:08 PM EDT | Severe Thunderstorm Warning | CTP | Fulton, Huntingdon | 72 min |
| Jun 16, 6:16 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 44 min |
| Jun 16, 6:19 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 66 min |
| Jun 16, 6:25 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 60 min |
| Jun 16, 6:31 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Perry | 79 min |
| Jun 16, 6:31 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Mifflin | 79 min |
| Jun 16, 6:31 PM EDT | Severe Thunderstorm Warning | CTP | Juniata | 79 min |
| Jun 16, 6:38 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 77 min |
| Jun 16, 6:42 PM EDT | Tornado Warning | CTP | Columbia | 48 min |
| Jun 16, 6:47 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 48 min |
| Jun 16, 7:15 PM EDT | Severe Thunderstorm Watch | SPC | Berks, Bucks, Carbon, Chester, Clinton, Columbia and 22 more | 4 hr |
| Jun 16, 7:23 PM EDT | Severe Thunderstorm Warning | CTP | Northumberland, Snyder, Union | 77 min |
| Jun 16, 7:23 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Lebanon | 77 min |
| Jun 16, 8:02 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 48 min |
| Jun 16, 8:07 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 78 min |
| Jun 16, 8:13 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Lycoming, Montour, Sullivan | 77 min |
| Jun 16, 8:53 PM EDT | Tornado Warning | CTP | Columbia | 32 min |
| Jun 16, 9:08 PM EDT | Flash Flood Warning | CTP | Columbia, Lycoming | 3 hr |
| Jun 16, 9:29 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 51 min |
| Jun 16, 11:57 PM EDT | Flash Flood Warning | CTP | Lycoming | 4 hr |
| Jun 17, 4:52 PM EDT | Severe Thunderstorm Warning | BGM | Bradford, Susquehanna | 63 min |
| Jun 19, 2:47 AM EDT | Severe Thunderstorm Warning | CTP | Somerset | 48 min |
| Jun 19, 3:08 AM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 37 min |
| Jun 19, 3:20 AM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 40 min |
| Jun 19, 4:24 AM EDT | Severe Thunderstorm Warning | CLE | Crawford | 36 min |
| Jun 19, 4:59 AM EDT | Flash Flood Warning | PBZ | Mercer | 3 hr |
| Jun 19, 6:32 AM EDT | Flash Flood Warning | CTP | Somerset | 5 hr |
| Jun 19, 6:41 AM EDT | Flash Flood Warning | CTP | Bedford | 5 hr |
| Jun 19, 8:25 AM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Jun 19, 11:27 AM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Jun 20, 12:01 AM EDT | Flash Flood Warning | PBZ | Indiana | 119 min |
| Jun 20, 12:26 AM EDT | Flash Flood Warning | PBZ | Westmoreland | 94 min |
| Jun 20, 12:34 AM EDT | Flash Flood Warning | CTP | Cambria | 4 hr |
| Jun 20, 3:49 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 46 min |
| Jun 20, 5:02 PM EDT | Severe Thunderstorm Warning | CTP | Snyder | 48 min |
| Jun 21, 7:24 PM EDT | Flash Flood Warning | PHI | Carbon | 2 hr |
| Jun 23, 2:24 PM EDT | Flash Flood Warning | CTP | Elk | 3 hr |
| Jun 23, 2:53 PM EDT | Severe Thunderstorm Warning | CTP | Elk | 62 min |
| Jun 23, 3:40 PM EDT | Severe Thunderstorm Warning | CTP | Cameron | 65 min |
| Jun 23, 3:51 PM EDT | Severe Thunderstorm Warning | CTP | Tioga | 64 min |
| Jun 23, 3:53 PM EDT | Flash Flood Warning | CTP | Bedford | 3 hr |
| Jun 23, 4:07 PM EDT | Severe Thunderstorm Warning | CTP | McKean | 63 min |
| Jun 23, 4:10 PM EDT | Flash Flood Warning | CTP | Tioga | 3 hr |
| Jun 23, 4:15 PM EDT | Severe Thunderstorm Warning | CTP | Potter | 65 min |
| Jun 23, 4:25 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 65 min |
| Jun 23, 4:39 PM EDT | Tornado Warning | CTP | Bedford | 61 min |
| Jun 23, 4:49 PM EDT | Tornado Warning | CTP | Fulton | 61 min |
| Jun 23, 4:57 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 63 min |
| Jun 23, 5:14 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 61 min |
| Jun 23, 5:20 PM EDT | Flash Flood Warning | CTP | Elk | 3 hr |
| Jun 23, 5:28 PM EDT | Flash Flood Warning | CTP | York | 3 hr |
| Jun 23, 5:35 PM EDT | Flash Flood Warning | CTP | Potter | 3 hr |
| Jun 23, 5:54 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 51 min |
| Jun 23, 5:58 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 62 min |
| Jun 23, 6:21 PM EDT | Flash Flood Warning | CTP | Franklin | 3 hr |
| Jun 23, 6:54 PM EDT | Flash Flood Warning | CTP | Tioga | 3 hr |
| Jun 23, 7:58 PM EDT | Flash Flood Warning | CTP | Northumberland | 3 hr |
| Jun 23, 8:11 PM EDT | Flash Flood Warning | CTP | York | 3 hr |
| Jun 23, 9:38 PM EDT | Flash Flood Warning | CTP | Dauphin | 2 hr |
| Jun 23, 9:48 PM EDT | Flash Flood Warning | CTP | Lebanon | 2 hr |
| Jun 23, 11:00 PM EDT | Flash Flood Warning | PHI | Berks | 3 hr |
| Jun 25, 3:00 PM EDT | Severe Thunderstorm Watch | SPC | Armstrong, Bradford, Butler, Cameron, Clarion, Clearfield and 15 more | 6 hr |
| Jun 25, 3:49 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 61 min |
| Jun 25, 4:35 PM EDT | Severe Thunderstorm Warning | CTP | Sullivan | 35 min |
| Jun 26, 6:28 AM EDT | Severe Thunderstorm Warning | CLE | Erie | 47 min |
| Jun 26, 11:02 AM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 43 min |
| Jun 26, 11:26 AM EDT | Severe Thunderstorm Warning | CTP | Centre, Clearfield, Elk | 74 min |
| Jun 26, 11:45 AM EDT | Severe Thunderstorm Watch | SPC | Adams, Armstrong, Bedford, Berks, Blair, Bradford and 42 more | 5 hr |
| Jun 26, 11:58 AM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 47 min |
| Jun 26, 12:03 PM EDT | Severe Thunderstorm Warning | CTP | Clinton, Union | 92 min |
| Jun 26, 12:12 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 33 min |
| Jun 26, 12:32 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 63 min |
| Jun 26, 12:33 PM EDT | Severe Thunderstorm Warning | CTP | Snyder | 62 min |
| Jun 26, 1:22 PM EDT | Severe Thunderstorm Warning | CTP | Lebanon | 33 min |
| Jun 26, 1:32 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Lancaster | 93 min |
| Jun 26, 1:36 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 64 min |
| Jun 26, 1:56 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Franklin | 79 min |
| Jun 26, 2:04 PM EDT | Severe Thunderstorm Warning | CTP | York | 81 min |
| Jun 26, 2:05 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Montgomery | 65 min |
| Jun 26, 2:15 PM EDT | Severe Thunderstorm Watch | SPC | Bucks, Chester, Delaware, Montgomery, Northampton, Philadelphia | 7 hr |
| Jun 26, 2:30 PM EDT | Flash Flood Warning | CTP | Dauphin, Lancaster, Lebanon, York | 4 hr |
| Jun 26, 2:30 PM EDT | Flash Flood Warning | CTP | Schuylkill | 4 hr |
| Jun 26, 2:30 PM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 65 min |
| Jun 26, 2:35 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 45 min |
| Jun 26, 2:46 PM EDT | Severe Thunderstorm Warning | CTP | Somerset | 79 min |
| Jun 26, 5:14 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 56 min |
| Jun 26, 5:40 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 60 min |
| Jun 26, 5:57 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 63 min |
| Jun 26, 5:58 PM EDT | Tornado Warning | PBZ | Washington | 47 min |
| Jun 26, 6:39 PM EDT | Flash Flood Warning | PBZ | Washington | 3 hr |
| Jun 26, 7:18 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 58 min |
| Jun 26, 8:06 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 59 min |
| Jun 27, 1:01 PM EDT | Flash Flood Warning | PBZ | Allegheny, Washington | 119 min |
| Jun 27, 1:20 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 58 min |
| Jun 27, 1:36 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 57 min |
| Jun 27, 4:15 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Beaver, Fayette, Greene, Lawrence, Mercer and 1 more | 6 hr |
| Jun 27, 7:57 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 43 min |
| Jun 27, 8:20 PM EDT | Tornado Warning | PBZ | Greene | 60 min |
| Jun 27, 8:32 PM EDT | Flash Flood Warning | PBZ | Greene | 3 hr |
| Jun 27, 11:45 PM EDT | Flash Flood Warning | PBZ | Greene | 5 hr |
| Jun 28, 5:00 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Beaver, Butler, Crawford, Fayette, Greene and 4 more | 6 hr |
| Jun 28, 8:36 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 74 min |
| Jun 28, 8:40 PM EDT | Tornado Warning | PBZ | Washington | 60 min |
| Jun 28, 8:49 PM EDT | Flash Flood Warning | PBZ | Washington | 4 hr |
| Jun 28, 9:20 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 70 min |
| Jun 28, 9:25 PM EDT | Flash Flood Warning | PBZ | Greene | 4 hr |
| Jun 28, 9:44 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 61 min |
| Jun 29, 5:20 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 65 min |
| Jun 29, 5:21 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 34 min |
| Jun 30, 1:06 AM EDT | Flash Flood Warning | PBZ | Greene | 10 hr |
| Jun 30, 5:47 AM EDT | Severe Thunderstorm Warning | CTP | Potter | 63 min |
| Jun 30, 8:52 AM EDT | Severe Thunderstorm Warning | BGM | Bradford, Susquehanna | 63 min |
| Jun 30, 1:30 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Cambria, Cameron and 19 more | 7 hr |
| Jun 30, 1:53 PM EDT | Severe Thunderstorm Warning | CTP | McKean, Warren | 47 min |
| Jun 30, 2:19 PM EDT | Flash Flood Warning | PBZ | Beaver | 5 hr |
| Jun 30, 2:21 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 59 min |
| Jun 30, 2:23 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Elk | 62 min |
| Jun 30, 2:39 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Butler | 71 min |
| Jun 30, 2:52 PM EDT | Severe Thunderstorm Warning | CTP | McKean, Potter | 33 min |
| Jun 30, 2:55 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 60 min |
| Jun 30, 3:05 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 75 min |
| Jun 30, 3:09 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 61 min |
| Jun 30, 3:14 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 61 min |
| Jun 30, 3:15 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Berks, Blair, Bradford, Bucks and 35 more | 6 hr |
| Jun 30, 3:20 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 60 min |
| Jun 30, 3:23 PM EDT | Flash Flood Warning | PBZ | Washington | 5 hr |
| Jun 30, 3:24 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Elk | 31 min |
| Jun 30, 3:25 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 60 min |
| Jun 30, 3:30 PM EDT | Severe Thunderstorm Watch | SPC | Philadelphia | 7 hr |
| Jun 30, 3:33 PM EDT | Severe Thunderstorm Warning | CTP | Cambria, Somerset | 87 min |
| Jun 30, 3:34 PM EDT | Severe Thunderstorm Warning | CTP | Tioga | 61 min |
| Jun 30, 3:45 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 60 min |
| Jun 30, 3:50 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 95 min |
| Jun 30, 4:08 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 47 min |
| Jun 30, 4:08 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Blair | 62 min |
| Jun 30, 4:16 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 34 min |
| Jun 30, 4:34 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon, Juniata, Mifflin, Snyder | 61 min |
| Jun 30, 4:34 PM EDT | Severe Thunderstorm Warning | CTP | Union | 61 min |
| Jun 30, 4:34 PM EDT | Severe Thunderstorm Warning | CTP | Sullivan | 51 min |
| Jun 30, 4:35 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 65 min |
| Jun 30, 4:35 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 45 min |
| Jun 30, 4:42 PM EDT | Severe Thunderstorm Warning | CTP | Fulton | 33 min |
| Jun 30, 4:46 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Montour, Northumberland | 64 min |
| Jun 30, 4:47 PM EDT | Flash Flood Warning | PBZ | Fayette, Greene | 3 hr |
| Jun 30, 5:01 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Franklin, Perry | 59 min |
| Jun 30, 5:02 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Wayne | 68 min |
| Jun 30, 5:14 PM EDT | Severe Thunderstorm Warning | BGM | Wyoming | 46 min |
| Jun 30, 5:15 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin | 65 min |
| Jun 30, 5:23 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 62 min |
| Jun 30, 5:24 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 61 min |
| Jun 30, 5:32 PM EDT | Severe Thunderstorm Warning | CTP | Adams, York | 78 min |
| Jun 30, 5:37 PM EDT | Severe Thunderstorm Warning | CTP | Lebanon | 48 min |
| Jun 30, 5:49 PM EDT | Severe Thunderstorm Warning | BGM | Pike | 76 min |
| Jun 30, 5:55 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 60 min |
| Jun 30, 6:00 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland | 20 min |
| Jun 30, 6:19 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 41 min |
| Jun 30, 6:56 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Montgomery | 49 min |
| Jul 8, 9:55 AM EDT | Flash Flood Warning | CTP | Huntingdon | 4 hr |
| Jul 8, 10:00 AM EDT | Flash Flood Warning | CTP | Mifflin | 4 hr |
| Jul 17, 3:56 PM EDT | Severe Thunderstorm Warning | BGM | Wyoming | 49 min |
| Jul 17, 4:15 PM EDT | Severe Thunderstorm Warning | CTP | Columbia | 35 min |
| Jul 17, 5:55 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 60 min |
| Jul 19, 8:39 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 61 min |
| Jul 19, 11:28 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 47 min |
| Jul 21, 9:56 AM EDT | Severe Thunderstorm Warning | CTP | Potter | 64 min |
| Jul 21, 10:48 AM EDT | Severe Thunderstorm Warning | CTP | Tioga | 62 min |
| Jul 21, 11:01 AM EDT | Tornado Warning | CTP | Tioga | 64 min |
| Jul 21, 11:20 AM EDT | Severe Thunderstorm Warning | BGM | Bradford | 40 min |
| Jul 21, 11:43 AM EDT | Severe Thunderstorm Warning | CTP | Lycoming, Sullivan | 67 min |
| Jul 21, 11:43 AM EDT | Severe Thunderstorm Warning | CTP | Lycoming, Sullivan | 62 min |
| Jul 21, 12:42 PM EDT | Severe Thunderstorm Warning | CTP | Columbia | 63 min |
| Jul 21, 1:17 PM EDT | Tornado Warning | CTP | Columbia | 63 min |
| Jul 21, 1:24 PM EDT | Tornado Warning | CTP | Columbia | 56 min |
| Jul 21, 1:28 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 47 min |
| Jul 21, 2:00 PM EDT | Severe Thunderstorm Warning | PHI | Carbon | 40 min |
| Jul 21, 2:01 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna | 34 min |
| Jul 21, 2:16 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 49 min |
| Jul 21, 4:11 PM EDT | Severe Thunderstorm Warning | CTP | Somerset | 74 min |
| Jul 21, 4:36 PM EDT | Severe Thunderstorm Warning | CTP | Bedford | 59 min |
| Jul 21, 4:53 PM EDT | Severe Thunderstorm Warning | CTP | Fulton | 32 min |
| Jul 21, 4:55 PM EDT | Severe Thunderstorm Warning | CTP | Fulton | 30 min |
| Jul 21, 5:21 PM EDT | Severe Thunderstorm Warning | CTP | Lebanon | 19 min |
| Jul 21, 6:11 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 34 min |
| Jul 21, 6:28 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 47 min |
| Jul 21, 8:20 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 65 min |
| Jul 21, 8:33 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 62 min |
| Jul 21, 8:54 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 56 min |
| Jul 21, 9:00 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Blair, Butler, Cambria and 15 more | 6 hr |
| Jul 21, 9:15 PM EDT | Severe Thunderstorm Warning | PBZ | Lawrence | 60 min |
| Jul 21, 9:25 PM EDT | Severe Thunderstorm Warning | PBZ | Venango | 60 min |
| Jul 21, 9:30 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 60 min |
| Jul 21, 9:34 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 46 min |
| Jul 21, 9:38 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion, Forest | 62 min |
| Jul 21, 9:40 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 60 min |
| Jul 21, 10:00 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Jefferson | |
| Jul 21, 10:22 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 58 min |
| Jul 21, 10:28 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana, Westmoreland | 72 min |
| Jul 21, 10:29 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 21 min |
| Jul 21, 10:43 PM EDT | Severe Thunderstorm Warning | CTP | Cambria, Clearfield | 57 min |
| Jul 21, 11:42 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 58 min |
| Jul 21, 11:47 PM EDT | Severe Thunderstorm Warning | CTP | Cambria, Somerset | 78 min |
| Jul 22, 12:43 AM EDT | Severe Thunderstorm Warning | PBZ | Lawrence, Mercer | 47 min |
| Jul 22, 12:54 AM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 46 min |
| Jul 22, 1:30 AM EDT | Severe Thunderstorm Warning | PBZ | Butler | 60 min |
| Jul 22, 8:35 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 60 min |
| Jul 23, 12:32 AM EDT | Severe Thunderstorm Warning | PBZ | Lawrence, Mercer | 58 min |
| Jul 23, 1:05 AM EDT | Severe Thunderstorm Warning | PBZ | Butler, Venango | 60 min |
| Jul 23, 2:01 AM EDT | Severe Thunderstorm Warning | PBZ | Clarion, Forest | 49 min |
| Jul 23, 2:07 AM EDT | Severe Thunderstorm Warning | CTP | Warren | 48 min |
| Jul 30, 1:42 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Westmoreland | 57 min |
| Jul 30, 1:53 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 57 min |
| Aug 11, 3:30 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 35 min |
| Aug 14, 1:54 PM EDT | Severe Thunderstorm Warning | CTP | Fulton | 51 min |
| Aug 14, 2:48 PM EDT | Severe Thunderstorm Warning | CTP | Franklin, Fulton | 32 min |
| Aug 14, 3:49 PM EDT | Flash Flood Warning | CTP | Bedford, Fulton | 2 hr |
| Aug 14, 5:49 PM EDT | Flash Flood Warning | CTP | Bedford, Fulton | 116 min |
| Aug 14, 5:58 PM EDT | Severe Thunderstorm Warning | CTP | McKean | 62 min |
| Aug 14, 6:54 PM EDT | Flash Flood Warning | CTP | McKean | 3 hr |
| Aug 14, 7:59 PM EDT | Flash Flood Warning | CTP | Elk | 2 hr |
| Aug 14, 9:52 PM EDT | Flash Flood Warning | CTP | Elk, McKean | 3 hr |
| Aug 15, 12:54 AM EDT | Flash Flood Warning | CTP | Elk, McKean | 3 hr |
| Aug 15, 5:24 PM EDT | Flash Flood Warning | CTP | Bedford | 3 hr |
| Aug 16, 6:57 PM EDT | Flash Flood Warning | PBZ | Allegheny | 2 hr |
| Aug 16, 7:23 PM EDT | Severe Thunderstorm Warning | CTP | Cameron | 62 min |
| Aug 18, 1:03 PM EDT | Severe Thunderstorm Warning | CTP | Lebanon | 62 min |
| Aug 18, 1:55 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 45 min |
| Aug 18, 2:02 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 33 min |
| Aug 18, 2:23 PM EDT | Severe Thunderstorm Warning | CTP | York | 47 min |
| Aug 18, 3:58 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery, Philadelphia | 47 min |
| Aug 24, 8:40 AM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 60 min |
| Aug 24, 8:50 AM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 43 min |
| Aug 24, 8:58 AM EDT | Severe Thunderstorm Warning | CTP | Warren | 62 min |
| Aug 24, 9:00 AM EDT | Severe Thunderstorm Watch | SPC | Adams, Allegheny, Armstrong, Beaver, Bedford, Blair and 35 more | 5 hr |
| Aug 24, 9:05 AM EDT | Severe Thunderstorm Warning | PBZ | Venango | 55 min |
| Aug 24, 9:21 AM EDT | Severe Thunderstorm Warning | PBZ | Lawrence | 54 min |
| Aug 24, 9:36 AM EDT | Severe Thunderstorm Warning | PBZ | Clarion, Forest | 54 min |
| Aug 24, 9:36 AM EDT | Severe Thunderstorm Warning | PBZ | Butler | 54 min |
| Aug 24, 9:37 AM EDT | Severe Thunderstorm Warning | CTP | Elk, McKean | 58 min |
| Aug 24, 9:46 AM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 44 min |
| Aug 24, 9:54 AM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Jefferson | 56 min |
| Aug 24, 10:07 AM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 78 min |
| Aug 24, 10:20 AM EDT | Severe Thunderstorm Warning | CTP | Cameron, Potter | 75 min |
| Aug 24, 10:27 AM EDT | Severe Thunderstorm Warning | CTP | Elk | 48 min |
| Aug 24, 10:42 AM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Washington | 58 min |
| Aug 24, 11:45 AM EDT | Severe Thunderstorm Watch | SPC | Bradford, Carbon, Columbia, Lackawanna, Luzerne, Monroe and 6 more | 6 hr |
| Aug 24, 1:23 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 77 min |
| Aug 24, 4:04 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 56 min |
| Aug 24, 5:09 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 56 min |
| Aug 25, 7:08 AM EDT | Severe Thunderstorm Warning | PBZ | Butler | 52 min |
| Aug 25, 4:45 PM EDT | Tornado Watch | SPC | Greene | 6 hr |
| Aug 25, 4:49 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Westmoreland | 59 min |
| Aug 25, 5:10 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 65 min |
| Aug 25, 6:22 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 48 min |
| Aug 25, 8:47 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 33 min |
| Aug 25, 10:09 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 21 min |
| Aug 25, 10:12 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 63 min |
| Aug 25, 10:47 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Sullivan | 43 min |
| Aug 26, 1:10 AM EDT | Severe Thunderstorm Warning | PHI | Northampton | 35 min |
| Sep 2, 2:00 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Berks, Blair, Bradford, Carbon and 28 more | 6 hr |
| Sep 2, 2:43 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 62 min |
| Sep 2, 2:51 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming, Sullivan | 49 min |
| Sep 2, 3:25 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Montour, Northumberland | 60 min |
| Sep 2, 4:36 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 34 min |
| Sep 2, 5:20 PM EDT | Severe Thunderstorm Warning | PHI | Carbon | 35 min |
| Sep 2, 5:39 PM EDT | Severe Thunderstorm Warning | PHI | Northampton | 46 min |
| Sep 2, 6:46 PM EDT | Tornado Warning | PHI | Chester | 34 min |
| Sep 2, 6:54 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 16 min |
| Sep 2, 7:01 PM EDT | Tornado Warning | PHI | Delaware | 34 min |
| Sep 2, 7:34 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 46 min |
| Sep 6, 11:30 PM EDT | Severe Thunderstorm Watch | SPC | Warren | 6 hr |
| Sep 7, 1:15 AM EDT | Severe Thunderstorm Watch | SPC | Bradford, Clinton, Lackawanna, Lycoming, Montour, Potter and 6 more | 5 hr |
| Sep 7, 3:54 AM EDT | Severe Thunderstorm Warning | BGM | Bradford | 66 min |
| Sep 7, 3:56 AM EDT | Severe Thunderstorm Warning | CTP | Tioga | 34 min |
| Sep 7, 4:23 AM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 62 min |
| Sep 7, 4:45 AM EDT | Severe Thunderstorm Warning | BGM | Wayne | 65 min |
| Sep 7, 5:45 AM EDT | Severe Thunderstorm Watch | SPC | Monroe, Pike, Wayne | 4 hr |
| Sep 7, 7:43 AM EDT | Severe Thunderstorm Warning | PBZ | Lawrence, Mercer | 43 min |
| Sep 7, 8:12 AM EDT | Severe Thunderstorm Warning | PBZ | Butler, Venango | 56 min |
| Sep 7, 8:15 AM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Bedford, Blair, Butler and 29 more | 6 hr |
| Sep 7, 8:20 AM EDT | Severe Thunderstorm Warning | PBZ | Lawrence | 40 min |
| Sep 7, 8:38 AM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Beaver, Washington | 57 min |
| Sep 7, 8:46 AM EDT | Severe Thunderstorm Warning | PBZ | Clarion, Forest | 59 min |
| Sep 7, 8:50 AM EDT | Severe Thunderstorm Warning | CTP | Elk | 55 min |
| Sep 7, 9:01 AM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Westmoreland | 59 min |
| Sep 7, 9:20 AM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 55 min |
| Sep 7, 9:34 AM EDT | Severe Thunderstorm Warning | CTP | Cameron | 61 min |
| Sep 7, 9:56 AM EDT | Severe Thunderstorm Warning | CTP | Clinton, Potter | 44 min |
| Sep 7, 10:20 AM EDT | Severe Thunderstorm Warning | CTP | Lycoming, Tioga | 75 min |
| Sep 7, 10:43 AM EDT | Severe Thunderstorm Warning | BGM | Bradford | 77 min |
| Sep 7, 10:45 AM EDT | Severe Thunderstorm Watch | SPC | Berks, Bradford, Bucks, Carbon, Chester, Columbia and 24 more | 5 hr |
| Sep 7, 11:01 AM EDT | Severe Thunderstorm Warning | CTP | Sullivan | 64 min |
| Sep 7, 11:07 AM EDT | Severe Thunderstorm Warning | CTP | Juniata, Mifflin, Snyder, Union | 63 min |
| Sep 7, 11:22 AM EDT | Severe Thunderstorm Warning | BGM | Luzerne, Wyoming | 78 min |
| Sep 7, 11:24 AM EDT | Severe Thunderstorm Warning | CTP | Columbia, Montour, Northumberland | 61 min |
| Sep 7, 11:31 AM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Perry | 49 min |
| Sep 7, 11:44 AM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 76 min |
| Sep 7, 11:47 AM EDT | Severe Thunderstorm Warning | CTP | Dauphin, York | 63 min |
| Sep 7, 11:47 AM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 63 min |
| Sep 7, 11:59 AM EDT | Severe Thunderstorm Warning | BGM | Lackawanna | 61 min |
| Sep 7, 12:07 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, Lebanon | 63 min |
| Sep 7, 12:15 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 60 min |
| Sep 7, 12:22 PM EDT | Severe Thunderstorm Warning | PHI | Carbon | 53 min |
| Sep 7, 12:30 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 60 min |
| Sep 7, 12:35 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 60 min |
| Sep 7, 12:41 PM EDT | Severe Thunderstorm Warning | BGM | Pike | 74 min |
| Sep 7, 12:46 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh, Northampton | 59 min |
| Sep 7, 1:04 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Montgomery | 61 min |
| Sep 7, 1:19 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 61 min |
| Sep 7, 1:39 PM EDT | Severe Thunderstorm Warning | PHI | Delaware, Philadelphia | 51 min |
| Sep 19, 6:03 PM EDT | Flash Flood Warning | PBZ | Fayette | 117 min |
| Sep 27, 2:17 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 48 min |
| Sep 27, 2:35 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 65 min |
| Sep 27, 3:14 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 66 min |
| Sep 27, 3:15 PM EDT | Severe Thunderstorm Watch | SPC | Carbon, Lackawanna, Lehigh, Monroe, Northampton, Pike and 2 more | 6 hr |
| Sep 27, 3:52 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 58 min |
| Sep 27, 4:09 PM EDT | Severe Thunderstorm Warning | CTP | Elk | 61 min |
| Sep 27, 4:13 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 42 min |
| Sep 27, 4:15 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Blair, Bradford, Butler and 36 more | 6 hr |
| Sep 27, 4:17 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 63 min |
| Sep 27, 4:25 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 40 min |
| Sep 27, 4:28 PM EDT | Severe Thunderstorm Warning | CTP | McKean, Warren | 62 min |
| Sep 27, 4:48 PM EDT | Tornado Warning | CTP | McKean | 32 min |
| Sep 27, 4:50 PM EDT | Severe Thunderstorm Warning | PBZ | Butler, Venango | 45 min |
| Sep 27, 4:59 PM EDT | Tornado Warning | CTP | Clearfield | 31 min |
| Sep 27, 5:15 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Potter | 60 min |
| Sep 27, 5:16 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 44 min |
| Sep 27, 5:37 PM EDT | Tornado Warning | PBZ | Armstrong, Clarion | 43 min |
| Sep 27, 5:56 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 34 min |
| Sep 27, 5:58 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 57 min |
| Sep 27, 6:00 PM EDT | Severe Thunderstorm Warning | CTP | Clinton, Lycoming | 45 min |
| Sep 27, 6:11 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 49 min |
| Sep 27, 6:16 PM EDT | Tornado Warning | CTP | Union | 34 min |
| Sep 27, 6:27 PM EDT | Severe Thunderstorm Warning | CTP | Montour, Northumberland | 48 min |
| Sep 27, 6:41 PM EDT | Severe Thunderstorm Warning | CTP | Blair | 49 min |
| Sep 27, 6:49 PM EDT | Severe Thunderstorm Warning | CTP | Columbia | 36 min |
| Sep 27, 7:02 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 48 min |
| Sep 30, 9:13 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 47 min |
| Nov 10, 3:30 PM EST | Severe Thunderstorm Watch | SPC | Beaver, Butler, Crawford, Lawrence, Mercer, Venango | 5 hr |
| Nov 10, 5:53 PM EST | Severe Thunderstorm Warning | CLE | Crawford, Erie | 82 min |
| Nov 10, 11:54 PM EST | Severe Thunderstorm Warning | CTP | Potter, Tioga | 61 min |
| Nov 10, 11:54 PM EST | Severe Thunderstorm Warning | CTP | Centre, Clinton | 61 min |
| Dec 7, 12:15 AM EST | Severe Thunderstorm Watch | SPC | Erie | 5 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 509 |
| Tornado Warning | 108 |
| Severe Thunderstorm Watch | 29 |
| Tornado Watch | 10 |
| Flooding | |
| Flash Flood Warning | 165 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Westmoreland County47
- Lancaster County45
- Washington County43
- Allegheny County40
- York County39
- Beaver County36
- Lycoming County34
- Berks County34
- Somerset County32
- Columbia County32
- Dauphin County31
- Bradford County31
- Butler County31
- Fayette County31
- McKean County30
- Crawford County30
- Sullivan County30
- Chester County30
- Clearfield County30
- Elk County29
- Erie County29
- Lebanon County29
- Bedford County29
- Centre County29
- Mercer County29
- Warren County28
- Schuylkill County28
- Potter County28
- Huntingdon County28
- Cambria County28
- Tioga County28
- Adams County27
- Cumberland County27
- Franklin County27
- Northumberland County27
- Montour County27
- Union County27
- Snyder County26
- Clinton County26
- Susquehanna County26
27 more counties
- Wayne County26
- Cameron County24
- Wyoming County24
- Montgomery County24
- Lawrence County24
- Blair County23
- Lackawanna County23
- Greene County23
- Perry County22
- Clarion County22
- Indiana County22
- Fulton County21
- Armstrong County21
- Bucks County21
- Venango County21
- Forest County20
- Pike County20
- Juniata County19
- Mifflin County19
- Jefferson County19
- Luzerne County19
- Carbon County18
- Monroe County18
- Philadelphia County18
- Northampton County14
- Lehigh County13
- Delaware County12
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive19971999
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.