Alert archive / Pennsylvania / River Flood Warnings
River Flood Warnings in Pennsylvania, 2011
289 river flood warnings in 2011. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of river flood warnings reaches back to 2005.
River Flood Warnings by county
Each county as a circle sized by its count in 2011. Tap one for its archive.
- River Flood Warnings
- 289
- Busiest month
- March98 river flood warnings
- Busiest day
- September 7, 201147 river flood warnings
Over time
By month
The alerts
Every alert, in the order issued. Times are local, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 21, 11:58 PM EST | River Flood Warning | PHI | Monroe | 30 min |
| Feb 28, 12:39 PM EST | River Flood Warning | CTP | Elk | 7 hr |
| Feb 28, 9:13 PM EST | River Flood Warning | PBZ | Clarion, Forest, Jefferson | 8 hr |
| Feb 28, 10:34 PM EST | River Flood Warning | PBZ | Allegheny | 16 hr |
| Feb 28, 10:34 PM EST | River Flood Warning | PBZ | Allegheny, Clarion | 8 hr |
| Feb 28, 10:34 PM EST | River Flood Warning | PBZ | Allegheny | 8 hr |
| Feb 28, 10:34 PM EST | River Flood Warning | PBZ | Allegheny, Westmoreland | 11 hr |
| Feb 28, 10:34 PM EST | River Flood Warning | PBZ | Allegheny | 15 hr |
| Mar 5, 11:46 AM EST | River Flood Warning | CTP | Clinton | 23 hr |
| Mar 6, 6:40 AM EST | River Flood Warning | BGM | Susquehanna | 44 hr |
| Mar 6, 6:40 AM EST | River Flood Warning | BGM | Bradford | 52 hr |
| Mar 6, 6:58 AM EST | River Flood Warning | PBZ | Clarion, Forest, Jefferson | 21 hr |
| Mar 6, 6:59 AM EST | River Flood Warning | CTP | Elk | 8 hr |
| Mar 6, 10:05 AM EST | River Flood Warning | PBZ | Allegheny, Clarion | 18 hr |
| Mar 6, 10:05 AM EST | River Flood Warning | PBZ | Allegheny | 18 hr |
| Mar 6, 10:05 AM EST | River Flood Warning | PBZ | Allegheny, Westmoreland | 19 hr |
| Mar 6, 10:05 AM EST | River Flood Warning | PBZ | Allegheny | 23 hr |
| Mar 6, 3:24 PM EST | River Flood Warning | PBZ | Allegheny | 17 hr |
| Mar 6, 4:19 PM EST | River Flood Warning | CTP | Centre, Snyder, Union | 6 hr |
| Mar 6, 5:15 PM EST | River Flood Warning | BGM | Bradford | 10 hr |
| Mar 6, 5:15 PM EST | River Flood Warning | BGM | Wyoming | 10 hr |
| Mar 6, 5:15 PM EST | River Flood Warning | BGM | Luzerne | 17 hr |
| Mar 6, 6:16 PM EST | River Flood Warning | CTP | Cumberland, York | 10 hr |
| Mar 6, 8:09 PM EST | River Flood Warning | CLE | Crawford | 20 hr |
| Mar 6, 8:41 PM EST | River Flood Warning | BGM | Wyoming | 7 hr |
| Mar 6, 9:44 PM EST | River Flood Warning | CTP | Dauphin, Lebanon, Schuylkill | 25 hr |
| Mar 6, 9:44 PM EST | River Flood Warning | CTP | Dauphin, Lebanon | 30 hr |
| Mar 7, 1:25 AM EST | River Flood Warning | PHI | Bucks | 9 hr |
| Mar 7, 3:55 AM EST | River Flood Warning | PHI | Monroe | 5 hr |
| Mar 7, 8:52 AM EST | River Flood Warning | PHI | Northampton | 17 hr |
| Mar 7, 8:52 AM EST | River Flood Warning | PHI | Bucks | 17 hr |
| Mar 7, 8:55 AM EST | River Flood Warning | PHI | Monroe, Northampton | 11 hr |
| Mar 7, 11:49 AM EST | River Flood Warning | CTP | Dauphin | 23 hr |
| Mar 10, 4:45 AM EST | River Flood Warning | CTP | Columbia | 4 days |
| Mar 10, 4:45 AM EST | River Flood Warning | CTP | Columbia, Montour, Northumberland | 4 days |
| Mar 10, 4:45 AM EST | River Flood Warning | CTP | Centre, Snyder, Union | 49 hr |
| Mar 10, 4:45 AM EST | River Flood Warning | CTP | Cumberland | 63 hr |
| Mar 10, 4:45 AM EST | River Flood Warning | CTP | Cumberland, York | 61 hr |
| Mar 10, 4:45 AM EST | River Flood Warning | CTP | Dauphin, Lebanon, Schuylkill | 54 hr |
| Mar 10, 4:45 AM EST | River Flood Warning | CTP | Dauphin, Lebanon | 63 hr |
| Mar 10, 4:45 AM EST | River Flood Warning | CTP | Dauphin | 70 hr |
| Mar 10, 4:45 AM EST | River Flood Warning | CTP | Lancaster, York | 24 hr |
| Mar 10, 4:45 AM EST | River Flood Warning | CTP | Lycoming, Sullivan | 30 hr |
| Mar 10, 4:45 AM EST | River Flood Warning | CTP | Blair, Huntingdon | 38 hr |
| Mar 10, 4:45 AM EST | River Flood Warning | CTP | Huntingdon | 45 hr |
| Mar 10, 11:18 AM EST | River Flood Warning | PBZ | Allegheny | 49 hr |
| Mar 10, 11:18 AM EST | River Flood Warning | PBZ | Allegheny | 44 hr |
| Mar 10, 11:18 AM EST | River Flood Warning | PBZ | Beaver | 44 hr |
| Mar 10, 11:18 AM EST | River Flood Warning | PBZ | Beaver | 50 hr |
| Mar 10, 11:18 AM EST | River Flood Warning | PBZ | Fayette, Washington, Westmoreland | 11 hr |
| Mar 10, 11:18 AM EST | River Flood Warning | PBZ | Allegheny, Washington, Westmoreland | 11 hr |
| Mar 10, 11:18 AM EST | River Flood Warning | PBZ | Allegheny | 11 hr |
| Mar 10, 11:35 AM EST | River Flood Warning | CTP | Dauphin, Juniata, Northumberland, Perry, Union | 64 hr |
| Mar 10, 11:35 AM EST | River Flood Warning | CTP | Cumberland, Dauphin, Juniata, Lancaster, Northumberland, Perry and 2 more | 3 days |
| Mar 10, 11:35 AM EST | River Flood Warning | CTP | Lancaster, York | 4 days |
| Mar 10, 1:29 PM EST | River Flood Warning | CTP | Perry | 27 hr |
| Mar 10, 4:55 PM EST | River Flood Warning | PHI | Chester | 17 hr |
| Mar 10, 8:02 PM EST | River Flood Warning | PHI | Chester, Delaware | 22 hr |
| Mar 10, 8:06 PM EST | River Flood Warning | CTP | Warren | 4 days |
| Mar 10, 8:52 PM EST | River Flood Warning | BGM | Bradford | 13 hr |
| Mar 10, 8:58 PM EST | River Flood Warning | BGM | Susquehanna | 3 days |
| Mar 10, 8:58 PM EST | River Flood Warning | BGM | Bradford | 4 days |
| Mar 10, 8:58 PM EST | River Flood Warning | BGM | Wyoming | 24 hr |
| Mar 10, 9:31 PM EST | River Flood Warning | PHI | Berks, Montgomery | 23 hr |
| Mar 10, 9:31 PM EST | River Flood Warning | PHI | Berks | 23 hr |
| Mar 10, 9:31 PM EST | River Flood Warning | PHI | Montgomery | 30 hr |
| Mar 10, 9:31 PM EST | River Flood Warning | PHI | Chester, Montgomery, Philadelphia | 12 hr |
| Mar 10, 9:31 PM EST | River Flood Warning | PHI | Montgomery, Philadelphia | 18 hr |
| Mar 10, 9:35 PM EST | River Flood Warning | PHI | Bucks | 14 hr |
| Mar 10, 9:37 PM EST | River Flood Warning | PHI | Monroe | 28 hr |
| Mar 10, 9:37 PM EST | River Flood Warning | PHI | Monroe | 12 hr |
| Mar 10, 9:41 PM EST | River Flood Warning | PHI | Montgomery | 12 hr |
| Mar 10, 9:43 PM EST | River Flood Warning | PHI | Lehigh, Northampton | 23 hr |
| Mar 10, 10:10 PM EST | River Flood Warning | PHI | Delaware | 3 hr |
| Mar 10, 10:12 PM EST | River Flood Warning | PHI | Carbon | 13 hr |
| Mar 11, 12:22 AM EST | River Flood Warning | CTP | Blair, Huntingdon | 10 hr |
| Mar 11, 1:12 AM EST | River Flood Warning | CTP | Clinton | 20 hr |
| Mar 11, 2:56 AM EST | River Flood Warning | PHI | Lehigh, Northampton | 12 hr |
| Mar 11, 3:17 AM EST | River Flood Warning | PHI | Monroe, Northampton | 31 hr |
| Mar 11, 3:17 AM EST | River Flood Warning | PHI | Northampton | 40 hr |
| Mar 11, 3:17 AM EST | River Flood Warning | PHI | Bucks | 40 hr |
| Mar 11, 3:17 AM EST | River Flood Warning | PHI | Bucks | 38 hr |
| Mar 11, 3:17 AM EST | River Flood Warning | PHI | Bucks | 38 hr |
| Mar 11, 3:17 AM EST | River Flood Warning | PHI | Bucks | 31 hr |
| Mar 11, 3:17 AM EST | River Flood Warning | PHI | Bucks | 38 hr |
| Mar 11, 4:27 AM EST | River Flood Warning | CTP | Northumberland, Union | 35 hr |
| Mar 11, 4:27 AM EST | River Flood Warning | CTP | Northumberland, Union | 37 hr |
| Mar 11, 4:27 AM EST | River Flood Warning | PBZ | Clarion, Forest, Jefferson | 38 hr |
| Mar 11, 4:58 AM EST | River Flood Warning | BGM | Bradford | 39 hr |
| Mar 11, 4:58 AM EST | River Flood Warning | BGM | Wyoming | 46 hr |
| Mar 11, 4:58 AM EST | River Flood Warning | BGM | Luzerne | 56 hr |
| Mar 11, 7:35 AM EST | River Flood Warning | CTP | Lycoming | 27 hr |
| Mar 11, 7:35 AM EST | River Flood Warning | CTP | Lycoming, Northumberland, Union | 27 hr |
| Mar 11, 10:02 AM EST | River Flood Warning | CTP | Lycoming | 6 hr |
| Mar 11, 10:03 AM EST | River Flood Warning | PBZ | Allegheny | 21 hr |
| Mar 11, 3:42 PM EST | River Flood Warning | BGM | Wayne | 15 hr |
| Mar 11, 3:42 PM EST | River Flood Warning | BGM | Pike | 15 hr |
| Mar 11, 5:47 PM EST | River Flood Warning | PHI | Monroe | 13 hr |
| Mar 18, 10:37 PM EDT | River Flood Warning | BGM | Bradford | 41 hr |
| Mar 21, 9:58 AM EDT | River Flood Warning | BGM | Bradford | 12 hr |
| Apr 5, 9:04 PM EDT | River Flood Warning | BGM | Bradford | 25 hr |
| Apr 16, 3:42 PM EDT | River Flood Warning | CTP | Huntingdon | 27 hr |
| Apr 16, 6:27 PM EDT | River Flood Warning | CTP | Centre, Snyder, Union | 8 hr |
| Apr 16, 6:27 PM EDT | River Flood Warning | CTP | Cumberland | 50 hr |
| Apr 16, 6:27 PM EDT | River Flood Warning | CTP | Cumberland, York | 44 hr |
| Apr 16, 7:52 PM EDT | River Flood Warning | CTP | Perry | 19 hr |
| Apr 16, 9:18 PM EDT | River Flood Warning | PHI | Chester | 11 hr |
| Apr 16, 9:32 PM EDT | River Flood Warning | PHI | Delaware | 6 hr |
| Apr 16, 10:02 PM EDT | River Flood Warning | CTP | Blair, Huntingdon | 12 hr |
| Apr 16, 10:02 PM EDT | River Flood Warning | CTP | Blair, Huntingdon | 3 hr |
| Apr 16, 10:02 PM EDT | River Flood Warning | CTP | Dauphin, Lebanon, Schuylkill | 28 hr |
| Apr 16, 10:02 PM EDT | River Flood Warning | CTP | Dauphin, Lebanon | 33 hr |
| Apr 16, 10:55 PM EDT | River Flood Warning | BGM | Bradford | 4 hr |
| Apr 16, 11:09 PM EDT | River Flood Warning | PHI | Bucks | 13 hr |
| Apr 16, 11:11 PM EDT | River Flood Warning | PHI | Montgomery | 6 hr |
| Apr 17, 12:24 AM EDT | River Flood Warning | CTP | Dauphin | 38 hr |
| Apr 17, 6:37 AM EDT | River Flood Warning | PHI | Chester, Delaware | 7 hr |
| Apr 17, 11:13 AM EDT | River Flood Warning | BGM | Bradford | 10 hr |
| Apr 17, 12:28 PM EDT | River Flood Warning | CTP | Lancaster, York | 19 hr |
| Apr 26, 10:02 PM EDT | River Flood Warning | BGM | Bradford | 5 days |
| Apr 27, 1:09 AM EDT | River Flood Warning | BGM | Susquehanna | 4 days |
| Apr 27, 2:43 AM EDT | River Flood Warning | BGM | Wyoming | 3 days |
| Apr 27, 6:00 AM EDT | River Flood Warning | BGM | Bradford | 63 hr |
| Apr 27, 10:25 AM EDT | River Flood Warning | BGM | Luzerne | 3 days |
| Apr 27, 11:19 AM EDT | River Flood Warning | CTP | Columbia | 3 days |
| Apr 28, 4:12 AM EDT | River Flood Warning | BGM | Bradford | 25 hr |
| Apr 28, 4:12 AM EDT | River Flood Warning | CTP | Lycoming | 41 hr |
| Apr 28, 4:12 AM EDT | River Flood Warning | CTP | Lycoming, Northumberland, Union | 35 hr |
| Apr 28, 4:12 AM EDT | River Flood Warning | CTP | Northumberland, Union | 41 hr |
| Apr 28, 4:12 AM EDT | River Flood Warning | CTP | Northumberland, Union | 41 hr |
| Apr 28, 4:12 AM EDT | River Flood Warning | CTP | Columbia, Montour, Northumberland | 65 hr |
| Apr 28, 6:05 AM EDT | River Flood Warning | BGM | Bradford | 8 hr |
| Apr 28, 7:41 AM EDT | River Flood Warning | CTP | Clinton | 20 hr |
| Apr 28, 8:07 AM EDT | River Flood Warning | CTP | Cumberland, York | 24 hr |
| Apr 28, 10:26 AM EDT | River Flood Warning | CTP | Dauphin, Juniata, Northumberland, Perry, Union | 45 hr |
| Apr 28, 10:26 AM EDT | River Flood Warning | CTP | Cumberland, Dauphin, Juniata, Lancaster, Northumberland, Perry and 2 more | 48 hr |
| Apr 28, 10:26 AM EDT | River Flood Warning | CTP | Lancaster, York | 63 hr |
| Apr 28, 10:26 AM EDT | River Flood Warning | CTP | Huntingdon | 11 hr |
| Apr 28, 12:52 PM EDT | River Flood Warning | CTP | Lycoming | 15 hr |
| Apr 28, 2:16 PM EDT | River Flood Warning | BGM | Wyoming | 15 hr |
| Apr 28, 5:55 PM EDT | River Flood Warning | CTP | Dauphin, Lebanon, Schuylkill | 10 hr |
| May 2, 11:24 AM EDT | River Flood Warning | BGM | Bradford | 63 hr |
| May 19, 3:33 AM EDT | River Flood Warning | CTP | Clinton | 14 hr |
| Jun 11, 6:44 AM EDT | River Flood Warning | CTP | Dauphin, Lebanon, Schuylkill | 8 hr |
| Jun 11, 6:44 AM EDT | River Flood Warning | CTP | Dauphin, Lebanon | 8 hr |
| Jun 11, 10:31 PM EDT | River Flood Warning | CTP | Dauphin, Lebanon, Schuylkill | 6 hr |
| Jun 12, 12:26 AM EDT | River Flood Warning | CTP | Dauphin, Lebanon | 7 hr |
| Aug 27, 11:23 AM EDT | River Flood Warning | CTP | Lancaster, York | 37 hr |
| Aug 27, 4:06 PM EDT | River Flood Warning | PHI | Montgomery | 29 hr |
| Aug 27, 4:06 PM EDT | River Flood Warning | PHI | Montgomery | 23 hr |
| Aug 27, 4:06 PM EDT | River Flood Warning | PHI | Chester, Montgomery, Philadelphia | 36 hr |
| Aug 27, 4:06 PM EDT | River Flood Warning | PHI | Montgomery, Philadelphia | 35 hr |
| Aug 27, 4:06 PM EDT | River Flood Warning | PHI | Northampton | 60 hr |
| Aug 27, 4:06 PM EDT | River Flood Warning | PHI | Bucks | 60 hr |
| Aug 27, 4:06 PM EDT | River Flood Warning | PHI | Bucks | 58 hr |
| Aug 27, 4:06 PM EDT | River Flood Warning | PHI | Bucks | 58 hr |
| Aug 27, 4:06 PM EDT | River Flood Warning | PHI | Bucks | 42 hr |
| Aug 27, 4:06 PM EDT | River Flood Warning | PHI | Bucks | 48 hr |
| Aug 27, 4:06 PM EDT | River Flood Warning | PHI | Bucks | 60 hr |
| Aug 27, 4:06 PM EDT | River Flood Warning | PHI | Monroe | 25 hr |
| Aug 27, 4:06 PM EDT | River Flood Warning | PHI | Monroe | 42 hr |
| Aug 27, 4:06 PM EDT | River Flood Warning | PHI | Lehigh, Northampton | 23 hr |
| Aug 27, 4:06 PM EDT | River Flood Warning | PHI | Lehigh, Northampton | 23 hr |
| Aug 27, 4:06 PM EDT | River Flood Warning | PHI | Chester, Delaware | 37 hr |
| Aug 27, 4:06 PM EDT | River Flood Warning | PHI | Bucks | 38 hr |
| Aug 27, 5:37 PM EDT | River Flood Warning | PHI | Chester | 19 hr |
| Aug 27, 5:37 PM EDT | River Flood Warning | PHI | Delaware | 23 hr |
| Aug 27, 5:37 PM EDT | River Flood Warning | PHI | Lehigh | 22 hr |
| Aug 27, 9:58 PM EDT | River Flood Warning | PHI | Monroe, Northampton | 48 hr |
| Aug 27, 9:58 PM EDT | River Flood Warning | PHI | Monroe, Northampton | 17 hr |
| Aug 28, 10:52 AM EDT | River Flood Warning | BGM | Pike, Wayne | 4 hr |
| Aug 28, 10:52 AM EDT | River Flood Warning | BGM | Wayne | 17 hr |
| Aug 28, 10:52 AM EDT | River Flood Warning | BGM | Pike | 17 hr |
| Aug 28, 10:52 AM EDT | River Flood Warning | BGM | Susquehanna | 28 hr |
| Aug 28, 2:54 PM EDT | River Flood Warning | BGM | Bradford | 26 hr |
| Aug 28, 6:47 PM EDT | River Flood Warning | PHI | Lehigh | 2 hr |
| Aug 28, 7:04 PM EDT | River Flood Warning | CTP | Lycoming, Sullivan | 3 hr |
| Aug 28, 7:43 PM EDT | River Flood Warning | CTP | Dauphin, Lebanon, Schuylkill | 5 hr |
| Aug 29, 3:45 AM EDT | River Flood Warning | PHI | Monroe | 19 hr |
| Sep 6, 12:00 PM EDT | River Flood Warning | CTP | Blair, Huntingdon | 42 hr |
| Sep 6, 12:00 PM EDT | River Flood Warning | CTP | Blair, Huntingdon | 32 hr |
| Sep 6, 12:00 PM EDT | River Flood Warning | CTP | Huntingdon | 44 hr |
| Sep 6, 12:00 PM EDT | River Flood Warning | CTP | Centre, Snyder, Union | 45 hr |
| Sep 6, 12:00 PM EDT | River Flood Warning | CTP | Cumberland, York | 67 hr |
| Sep 6, 12:00 PM EDT | River Flood Warning | CTP | Perry | 45 hr |
| Sep 6, 12:00 PM EDT | River Flood Warning | CTP | Dauphin, Lebanon, Schuylkill | 4 days |
| Sep 6, 12:00 PM EDT | River Flood Warning | CTP | Dauphin, Lebanon | 4 days |
| Sep 6, 12:00 PM EDT | River Flood Warning | CTP | Dauphin | 6 days |
| Sep 6, 5:16 PM EDT | River Flood Warning | CTP | Cumberland | 62 hr |
| Sep 6, 7:03 PM EDT | River Flood Warning | PHI | Chester | 16 hr |
| Sep 6, 7:41 PM EDT | River Flood Warning | PHI | Delaware | 5 hr |
| Sep 6, 7:52 PM EDT | River Flood Warning | PHI | Bucks | 52 hr |
| Sep 6, 11:13 PM EDT | River Flood Warning | PHI | Chester, Montgomery, Philadelphia | 3 days |
| Sep 6, 11:19 PM EDT | River Flood Warning | PHI | Montgomery | 17 hr |
| Sep 6, 11:24 PM EDT | River Flood Warning | CTP | Huntingdon | 22 hr |
| Sep 6, 11:24 PM EDT | River Flood Warning | CTP | Clinton | 31 hr |
| Sep 6, 11:24 PM EDT | River Flood Warning | CTP | Bedford | 18 hr |
| Sep 7, 12:59 AM EDT | River Flood Warning | PHI | Chester, Delaware | 41 hr |
| Sep 7, 3:40 AM EDT | River Flood Warning | PHI | Montgomery, Philadelphia | 54 hr |
| Sep 7, 3:47 AM EDT | River Flood Warning | PHI | Delaware | 4 hr |
| Sep 7, 3:49 AM EDT | River Flood Warning | BGM | Pike, Wayne | 31 hr |
| Sep 7, 4:26 AM EDT | River Flood Warning | PHI | Berks, Montgomery | 6 hr |
| Sep 7, 4:26 AM EDT | River Flood Warning | PHI | Montgomery | 3 days |
| Sep 7, 4:49 AM EDT | River Flood Warning | CTP | Lycoming, Sullivan | 41 hr |
| Sep 7, 9:45 AM EDT | River Flood Warning | BGM | Susquehanna | 5 days |
| Sep 7, 9:45 AM EDT | River Flood Warning | BGM | Bradford | 36 hr |
| Sep 7, 9:48 AM EDT | River Flood Warning | PHI | Lehigh, Northampton | 5 hr |
| Sep 7, 10:05 AM EDT | River Flood Warning | PHI | Monroe, Northampton | 60 hr |
| Sep 7, 10:05 AM EDT | River Flood Warning | PHI | Northampton | 67 hr |
| Sep 7, 10:05 AM EDT | River Flood Warning | PHI | Bucks | 68 hr |
| Sep 7, 10:05 AM EDT | River Flood Warning | PHI | Bucks | 67 hr |
| Sep 7, 10:05 AM EDT | River Flood Warning | PHI | Bucks | 67 hr |
| Sep 7, 10:05 AM EDT | River Flood Warning | PHI | Bucks | 64 hr |
| Sep 7, 10:05 AM EDT | River Flood Warning | PHI | Bucks | 67 hr |
| Sep 7, 10:05 AM EDT | River Flood Warning | PHI | Bucks | 68 hr |
| Sep 7, 11:22 AM EDT | River Flood Warning | CTP | Huntingdon, Mifflin | 6 hr |
| Sep 7, 11:22 AM EDT | River Flood Warning | CTP | Huntingdon, Juniata, Mifflin | 10 hr |
| Sep 7, 11:22 AM EDT | River Flood Warning | CTP | Juniata, Perry | 10 hr |
| Sep 7, 11:22 AM EDT | River Flood Warning | CTP | Columbia | 4 days |
| Sep 7, 11:22 AM EDT | River Flood Warning | CTP | Columbia, Montour, Northumberland | 4 days |
| Sep 7, 11:22 AM EDT | River Flood Warning | CTP | Dauphin, Juniata, Northumberland, Perry, Union | 4 days |
| Sep 7, 11:22 AM EDT | River Flood Warning | CTP | Cumberland, Dauphin, Juniata, Lancaster, Northumberland, Perry and 2 more | 4 days |
| Sep 7, 11:22 AM EDT | River Flood Warning | CTP | Lancaster, York | 4 days |
| Sep 7, 11:22 AM EDT | River Flood Warning | CTP | Lycoming | 49 hr |
| Sep 7, 11:22 AM EDT | River Flood Warning | CTP | Lycoming, Northumberland, Union | 49 hr |
| Sep 7, 11:22 AM EDT | River Flood Warning | CTP | Northumberland, Union | 44 hr |
| Sep 7, 11:22 AM EDT | River Flood Warning | CTP | Northumberland, Union | 44 hr |
| Sep 7, 11:22 AM EDT | River Flood Warning | CTP | Northumberland, Union | 53 hr |
| Sep 7, 11:24 AM EDT | River Flood Warning | BGM | Bradford | 5 days |
| Sep 7, 2:47 PM EDT | River Flood Warning | BGM | Wyoming | 37 hr |
| Sep 7, 3:28 PM EDT | River Flood Warning | CTP | Lancaster, York | 44 hr |
| Sep 7, 3:42 PM EDT | River Flood Warning | BGM | Wayne | 42 hr |
| Sep 7, 3:42 PM EDT | River Flood Warning | BGM | Pike | 40 hr |
| Sep 7, 4:03 PM EDT | River Flood Warning | BGM | Bradford | 3 days |
| Sep 7, 4:03 PM EDT | River Flood Warning | BGM | Wyoming | 3 days |
| Sep 7, 4:03 PM EDT | River Flood Warning | BGM | Luzerne | 4 days |
| Sep 7, 4:06 PM EDT | River Flood Warning | PHI | Berks, Montgomery | 41 hr |
| Sep 7, 4:06 PM EDT | River Flood Warning | PHI | Berks | 45 hr |
| Sep 7, 6:07 PM EDT | River Flood Warning | PHI | Chester | 10 hr |
| Sep 7, 9:38 PM EDT | River Flood Warning | PHI | Montgomery | 13 hr |
| Sep 7, 10:05 PM EDT | River Flood Warning | BGM | Bradford | 11 hr |
| Sep 8, 12:55 AM EDT | River Flood Warning | CTP | Tioga | 8 hr |
| Sep 8, 3:41 AM EDT | River Flood Warning | PHI | Lehigh, Northampton | 7 hr |
| Sep 8, 3:49 AM EDT | River Flood Warning | PHI | Monroe | 7 hr |
| Sep 8, 5:48 AM EDT | River Flood Warning | PHI | Monroe | 34 hr |
| Sep 8, 7:46 AM EDT | River Flood Warning | CTP | Lycoming | 8 hr |
| Sep 8, 11:12 AM EDT | River Flood Warning | PHI | Monroe, Northampton | 8 hr |
| Sep 8, 3:14 PM EDT | River Flood Warning | PHI | Lehigh, Northampton | 13 hr |
| Sep 9, 10:41 PM EDT | River Flood Warning | CTP | Blair, Huntingdon | 15 hr |
| Sep 9, 10:41 PM EDT | River Flood Warning | CTP | Blair, Huntingdon | 6 hr |
| Sep 9, 10:41 PM EDT | River Flood Warning | CTP | Perry | 15 hr |
| Sep 23, 6:48 PM EDT | River Flood Warning | CTP | Cumberland, York | 7 hr |
| Sep 23, 11:58 PM EDT | River Flood Warning | PHI | Chester | 5 hr |
| Sep 24, 1:04 AM EDT | River Flood Warning | PHI | Bucks | 5 hr |
| Sep 24, 4:13 AM EDT | River Flood Warning | PHI | Chester, Montgomery, Philadelphia | 7 hr |
| Sep 24, 4:44 AM EDT | River Flood Warning | PHI | Chester, Delaware | 14 hr |
| Sep 27, 5:32 PM EDT | River Flood Warning | CTP | Huntingdon | 3 hr |
| Sep 27, 10:20 PM EDT | River Flood Warning | BGM | Wyoming | 36 hr |
| Sep 28, 12:25 AM EDT | River Flood Warning | CTP | Huntingdon | 3 hr |
| Sep 28, 1:16 AM EDT | River Flood Warning | CTP | Dauphin, Lebanon, Schuylkill | 21 hr |
| Sep 28, 3:41 AM EDT | River Flood Warning | CTP | Dauphin, Lebanon | 24 hr |
| Sep 28, 6:10 AM EDT | River Flood Warning | CTP | Dauphin | 22 hr |
| Sep 28, 7:14 PM EDT | River Flood Warning | CTP | Cumberland, York | 9 hr |
| Sep 28, 11:31 PM EDT | River Flood Warning | BGM | Susquehanna | 16 hr |
| Sep 29, 3:51 AM EDT | River Flood Warning | BGM | Bradford | 25 hr |
| Sep 29, 10:20 AM EDT | River Flood Warning | CTP | Cumberland, York | 10 hr |
| Sep 29, 12:20 PM EDT | River Flood Warning | CTP | Columbia | 20 hr |
| Sep 29, 12:20 PM EDT | River Flood Warning | CTP | Columbia, Montour, Northumberland | 20 hr |
| Nov 23, 12:02 AM EST | River Flood Warning | CTP | Huntingdon | 25 hr |
| Nov 23, 12:02 AM EST | River Flood Warning | CTP | Perry | 15 hr |
| Nov 23, 12:02 AM EST | River Flood Warning | CTP | Cumberland | 46 hr |
| Nov 23, 12:02 AM EST | River Flood Warning | CTP | Cumberland, York | 33 hr |
| Nov 23, 2:39 AM EST | River Flood Warning | PHI | Bucks | 9 hr |
| Nov 23, 3:00 AM EST | River Flood Warning | CTP | Dauphin, Lebanon, Schuylkill | 24 hr |
| Nov 23, 3:00 AM EST | River Flood Warning | CTP | Dauphin, Lebanon | 27 hr |
| Nov 23, 3:39 AM EST | River Flood Warning | PHI | Montgomery | 11 hr |
| Nov 23, 5:54 AM EST | River Flood Warning | PHI | Chester, Montgomery, Philadelphia | 16 hr |
| Nov 23, 6:34 AM EST | River Flood Warning | PHI | Chester | 7 hr |
| Nov 23, 6:57 AM EST | River Flood Warning | PHI | Chester, Delaware | 16 hr |
| Nov 23, 7:27 AM EST | River Flood Warning | PBZ | Fayette, Washington, Westmoreland | 20 hr |
| Nov 23, 7:27 AM EST | River Flood Warning | PBZ | Allegheny, Washington, Westmoreland | 20 hr |
| Nov 23, 10:26 AM EST | River Flood Warning | PHI | Montgomery, Philadelphia | 5 hr |
| Dec 7, 9:41 PM EST | River Flood Warning | PHI | Delaware | 5 hr |
| Dec 7, 10:12 PM EST | River Flood Warning | PHI | Bucks | 12 hr |
| Dec 7, 11:40 PM EST | River Flood Warning | PHI | Chester | 8 hr |
| Dec 8, 2:21 AM EST | River Flood Warning | PHI | Chester, Montgomery, Philadelphia | 10 hr |
| Dec 8, 2:51 AM EST | River Flood Warning | PHI | Chester, Delaware | 13 hr |
| Dec 8, 3:17 AM EST | River Flood Warning | CTP | Huntingdon | 9 hr |
| Dec 8, 6:09 PM EST | River Flood Warning | CTP | Cumberland | 13 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Dauphin County29
- Bucks County26
- Montgomery County22
- Bradford County21
- Chester County21
- Northumberland County20
- York County19
- Huntingdon County19
- Lebanon County18
- Union County17
- Cumberland County17
- Northampton County17
- Monroe County16
- Allegheny County16
- Delaware County13
- Lycoming County12
- Perry County12
- Schuylkill County10
- Lancaster County10
- Philadelphia County10
- Wyoming County9
- Lehigh County9
- Columbia County8
- Blair County8
- Juniata County8
- Snyder County7
- Westmoreland County6
- Susquehanna County6
- Clarion County5
- Clinton County5
- Berks County5
- Wayne County5
- Pike County5
- Centre County4
- Luzerne County4
- Montour County4
- Washington County4
- Forest County3
- Jefferson County3
- Sullivan County3
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20102012
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.