Alert archive / Pennsylvania / Flash Flood Warnings
Flash Flood Warnings in Pennsylvania, 2018
198 flash flood warnings in 2018. 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 flash flood warnings reaches back to 1986.
Flash Flood Warnings by county
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Flash Flood Warnings
- 198
- Busiest month
- August79 flash flood warnings
- Busiest day
- August 13, 201817 flash 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 12, 6:31 AM EST | Flash Flood Warning | CTP | Elk, McKean | 4 hr |
| Apr 16, 7:04 AM EDT | Flash Flood Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 4 hr |
| May 12, 8:13 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 108 min |
| May 14, 2:59 PM EDT | Flash Flood Warning | PBZ | Fayette, Greene | 2 hr |
| May 16, 7:14 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| May 16, 10:40 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 2 hr |
| May 27, 6:33 AM EDT | Flash Flood Warning | PHI | Bucks | 4 hr |
| May 27, 7:30 AM EDT | Flash Flood Warning | PHI | Bucks | 4 hr |
| May 27, 8:01 AM EDT | Flash Flood Warning | PHI | Bucks, Chester, Montgomery | 4 hr |
| May 31, 6:22 PM EDT | Flash Flood Warning | CLE | Crawford | 3 hr |
| May 31, 8:26 PM EDT | Flash Flood Warning | PBZ | Clarion, Forest, Venango | 2 hr |
| Jun 1, 7:28 PM EDT | Flash Flood Warning | CTP | Fulton | 3 hr |
| Jun 1, 7:33 PM EDT | Flash Flood Warning | BGM | Wayne | 117 min |
| Jun 1, 11:38 PM EDT | Flash Flood Warning | CTP | Lancaster | 3 hr |
| Jun 2, 12:47 AM EDT | Flash Flood Warning | CTP | York | 3 hr |
| Jun 2, 2:29 AM EDT | Flash Flood Warning | CTP | Lancaster | 3 hr |
| Jun 2, 7:39 PM EDT | Flash Flood Warning | CTP | Lancaster, York | 6 hr |
| Jun 8, 8:24 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 90 min |
| Jun 10, 6:00 PM EDT | Flash Flood Warning | PBZ | Allegheny, Fayette, Washington, Westmoreland | 5 hr |
| Jun 10, 6:41 PM EDT | Flash Flood Warning | PBZ | Allegheny, Washington | 3 hr |
| Jun 10, 7:04 PM EDT | Flash Flood Warning | PBZ | Fayette | 5 hr |
| Jun 10, 7:35 PM EDT | Flash Flood Warning | PBZ | Fayette, Westmoreland | 4 hr |
| Jun 10, 11:33 PM EDT | Flash Flood Warning | PHI | Berks, Chester, Delaware, Montgomery, Philadelphia | 5 hr |
| Jun 13, 8:20 PM EDT | Flash Flood Warning | PBZ | Allegheny, Washington, Westmoreland | 79 min |
| Jun 13, 8:45 PM EDT | Flash Flood Warning | PBZ | Armstrong | 2 hr |
| Jun 20, 2:44 PM EDT | Flash Flood Warning | CTP | Cambria, Somerset | 4 hr |
| Jun 20, 3:24 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 2 hr |
| Jun 20, 4:06 PM EDT | Flash Flood Warning | CTP | Bedford, Somerset | 3 hr |
| Jun 20, 4:17 PM EDT | Flash Flood Warning | PBZ | Allegheny | 88 min |
| Jun 20, 4:54 PM EDT | Flash Flood Warning | PBZ | Fayette | 4 hr |
| Jun 20, 7:52 PM EDT | Flash Flood Warning | PBZ | Allegheny, Washington | 6 hr |
| Jun 20, 8:16 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 4 hr |
| Jun 20, 9:07 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Jun 28, 2:36 AM EDT | Flash Flood Warning | CTP | Lebanon, Schuylkill | 3 hr |
| Jul 2, 3:29 PM EDT | Flash Flood Warning | CTP | Bedford, Blair, Cambria | 2 hr |
| Jul 2, 6:12 PM EDT | Flash Flood Warning | PBZ | Forest, Venango | 2 hr |
| Jul 2, 6:23 PM EDT | Flash Flood Warning | PBZ | Butler | 2 hr |
| Jul 2, 6:40 PM EDT | Flash Flood Warning | PBZ | Clarion, Forest, Venango | 2 hr |
| Jul 2, 6:47 PM EDT | Flash Flood Warning | PBZ | Allegheny, Armstrong, Butler, Westmoreland | 118 min |
| Jul 2, 6:51 PM EDT | Flash Flood Warning | PBZ | Allegheny, Washington | 114 min |
| Jul 2, 7:09 PM EDT | Flash Flood Warning | PBZ | Clarion | 2 hr |
| Jul 3, 3:11 PM EDT | Flash Flood Warning | PHI | Montgomery, Philadelphia | 50 min |
| Jul 3, 5:45 PM EDT | Flash Flood Warning | PHI | Delaware, Montgomery, Philadelphia | 4 hr |
| Jul 3, 6:37 PM EDT | Flash Flood Warning | PHI | Bucks, Philadelphia | 3 hr |
| Jul 3, 6:58 PM EDT | Flash Flood Warning | PHI | Chester, Delaware | 4 hr |
| Jul 3, 7:06 PM EDT | Flash Flood Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 2 hr |
| Jul 3, 7:54 PM EDT | Flash Flood Warning | PHI | Chester | 4 hr |
| Jul 4, 12:21 PM EDT | Flash Flood Warning | CTP | Potter, Tioga | 3 hr |
| Jul 4, 12:31 PM EDT | Flash Flood Warning | CTP | Sullivan | 3 hr |
| Jul 4, 1:28 PM EDT | Flash Flood Warning | CTP | Columbia | 3 hr |
| Jul 4, 3:22 PM EDT | Flash Flood Warning | PHI | Lehigh, Northampton | 4 hr |
| Jul 4, 3:31 PM EDT | Flash Flood Warning | CTP | Sullivan | 3 hr |
| Jul 4, 6:20 PM EDT | Flash Flood Warning | PHI | Berks | 4 hr |
| Jul 4, 7:49 PM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Jul 4, 8:37 PM EDT | Flash Flood Warning | PBZ | Allegheny, Westmoreland | 113 min |
| Jul 4, 11:08 PM EDT | Flash Flood Warning | PBZ | Forest | 3 hr |
| Jul 5, 7:07 AM EDT | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| Jul 5, 12:34 PM EDT | Flash Flood Warning | CLE | Crawford | 3 hr |
| Jul 6, 7:01 AM EDT | Flash Flood Warning | PHI | Bucks, Philadelphia | 4 hr |
| Jul 15, 10:06 AM EDT | Flash Flood Warning | PHI | Berks | 114 min |
| Jul 16, 3:13 PM EDT | Flash Flood Warning | BGM | Pike | 3 hr |
| Jul 16, 3:44 PM EDT | Flash Flood Warning | PHI | Monroe | 2 hr |
| Jul 16, 6:37 PM EDT | Flash Flood Warning | CTP | McKean, Potter | 3 hr |
| Jul 16, 9:23 PM EDT | Flash Flood Warning | CTP | McKean, Potter, Tioga | 112 min |
| Jul 17, 2:27 PM EDT | Flash Flood Warning | PHI | Berks, Chester, Montgomery | 4 hr |
| Jul 22, 8:43 PM EDT | Flash Flood Warning | PHI | Chester | 4 hr |
| Jul 22, 8:54 PM EDT | Flash Flood Warning | PHI | Berks, Chester | 4 hr |
| Jul 22, 9:40 PM EDT | Flash Flood Warning | PHI | Lehigh | 3 hr |
| Jul 23, 4:32 AM EDT | Flash Flood Warning | CTP | Dauphin, Lebanon, Schuylkill | 3 hr |
| Jul 23, 5:44 AM EDT | Flash Flood Warning | CTP | Columbia, Montour, Northumberland, Schuylkill | 3 hr |
| Jul 23, 4:06 PM EDT | Flash Flood Warning | BGM | Bradford | 90 min |
| Jul 23, 10:04 PM EDT | Flash Flood Warning | CTP | Adams, Cumberland, Dauphin, Juniata, Lancaster, Northumberland and 2 more | 5 hr |
| Jul 23, 11:30 PM EDT | Flash Flood Warning | CTP | Centre, Clinton, Lycoming, Mifflin, Montour, Snyder and 1 more | 4 hr |
| Jul 23, 11:34 PM EDT | Flash Flood Warning | CTP | Centre, Clinton, Lycoming, Mifflin, Montour, Northumberland and 2 more | 4 hr |
| Jul 24, 12:07 AM EDT | Flash Flood Warning | CTP | Lycoming, Tioga | 4 hr |
| Jul 24, 1:34 AM EDT | Flash Flood Warning | PHI | Berks, Chester, Lehigh, Montgomery | 8 hr |
| Jul 24, 2:36 AM EDT | Flash Flood Warning | BGM | Bradford | 6 hr |
| Jul 24, 10:54 AM EDT | Flash Flood Warning | CTP | Cumberland, Dauphin, Lancaster, York | 3 hr |
| Jul 24, 10:20 PM EDT | Flash Flood Warning | CTP | York | 3 hr |
| Jul 25, 12:00 AM EDT | Flash Flood Warning | BGM | Bradford | 4 hr |
| Jul 25, 12:52 AM EDT | Flash Flood Warning | CTP | Dauphin, Lancaster, Lebanon, Schuylkill, York | 4 hr |
| Jul 25, 1:35 AM EDT | Flash Flood Warning | CTP | Columbia, Montour, Northumberland | 5 hr |
| Jul 25, 5:32 AM EDT | Flash Flood Warning | BGM | Luzerne | 3 hr |
| Jul 25, 3:48 PM EDT | Flash Flood Warning | CTP | Adams, Cumberland | 3 hr |
| Jul 25, 4:47 PM EDT | Flash Flood Warning | BGM | Bradford | 3 hr |
| Jul 25, 5:18 PM EDT | Flash Flood Warning | BGM | Luzerne | 5 hr |
| Jul 25, 5:27 PM EDT | Flash Flood Warning | CTP | Adams, Columbia, Cumberland, Dauphin, Lebanon, Montour and 4 more | 4 hr |
| Jul 25, 6:29 PM EDT | Flash Flood Warning | CTP | Lancaster, Lebanon, Schuylkill, York | 6 hr |
| Jul 25, 7:07 PM EDT | Flash Flood Warning | BGM | Wayne | 4 hr |
| Jul 25, 7:22 PM EDT | Flash Flood Warning | BGM | Lackawanna, Luzerne | 3 hr |
| Jul 25, 7:46 PM EDT | Flash Flood Warning | BGM | Bradford | 3 hr |
| Jul 27, 12:35 PM EDT | Flash Flood Warning | PHI | Monroe | 63 min |
| Jul 27, 3:54 PM EDT | Flash Flood Warning | PHI | Berks | 4 hr |
| Jul 27, 5:00 PM EDT | Flash Flood Warning | PHI | Monroe | 3 hr |
| Jul 27, 7:03 PM EDT | Flash Flood Warning | PHI | Berks | 3 hr |
| Jul 30, 12:20 PM EDT | Flash Flood Warning | PBZ | Indiana | 3 hr |
| Jul 30, 1:56 PM EDT | Flash Flood Warning | PBZ | Indiana | 3 hr |
| Jul 31, 3:56 PM EDT | Flash Flood Warning | PBZ | Fayette | 2 hr |
| Jul 31, 4:16 PM EDT | Flash Flood Warning | PBZ | Fayette | 2 hr |
| Aug 1, 9:55 PM EDT | Flash Flood Warning | CTP | Lycoming | 3 hr |
| Aug 3, 4:16 AM EDT | Flash Flood Warning | CTP | Centre, Huntingdon | 3 hr |
| Aug 3, 7:32 AM EDT | Flash Flood Warning | BGM | Bradford, Susquehanna, Wyoming | 118 min |
| Aug 3, 8:21 AM EDT | Flash Flood Warning | CTP | Lycoming, Sullivan | 6 hr |
| Aug 3, 9:05 AM EDT | Flash Flood Warning | CTP | Bedford, Blair | 3 hr |
| Aug 3, 9:28 AM EDT | Flash Flood Warning | BGM | Bradford, Susquehanna, Wyoming | 3 hr |
| Aug 3, 9:45 AM EDT | Flash Flood Warning | PBZ | Armstrong, Butler, Clarion, Venango | 2 hr |
| Aug 3, 9:49 AM EDT | Flash Flood Warning | CTP | Centre, Huntingdon | 3 hr |
| Aug 3, 2:32 PM EDT | Flash Flood Warning | BGM | Bradford, Susquehanna, Wyoming | 3 hr |
| Aug 3, 8:08 PM EDT | Flash Flood Warning | CTP | Lancaster, York | 3 hr |
| Aug 3, 9:03 PM EDT | Flash Flood Warning | PHI | Berks | 8 hr |
| Aug 3, 10:23 PM EDT | Flash Flood Warning | PHI | Lehigh, Northampton | 4 hr |
| Aug 3, 10:57 PM EDT | Flash Flood Warning | CTP | Lancaster, Lebanon, York | 3 hr |
| Aug 4, 1:56 AM EDT | Flash Flood Warning | CTP | Lancaster, Lebanon, York | 5 hr |
| Aug 5, 2:18 PM EDT | Flash Flood Warning | PBZ | Allegheny | 117 min |
| Aug 5, 3:13 PM EDT | Flash Flood Warning | PBZ | Allegheny, Washington | 99 min |
| Aug 5, 4:33 PM EDT | Flash Flood Warning | PBZ | Allegheny, Armstrong, Butler, Westmoreland | 88 min |
| Aug 7, 5:12 PM EDT | Flash Flood Warning | BGM | Bradford, Wyoming | 4 hr |
| Aug 7, 6:58 PM EDT | Flash Flood Warning | CTP | Sullivan | 3 hr |
| Aug 8, 6:20 PM EDT | Flash Flood Warning | BGM | Susquehanna | 5 hr |
| Aug 8, 6:58 PM EDT | Flash Flood Warning | BGM | Susquehanna | 5 hr |
| Aug 8, 7:04 PM EDT | Flash Flood Warning | BGM | Wayne | 4 hr |
| Aug 10, 2:04 PM EDT | Flash Flood Warning | PBZ | Allegheny, Westmoreland | 5 hr |
| Aug 10, 3:20 PM EDT | Flash Flood Warning | PBZ | Allegheny, Westmoreland | 3 hr |
| Aug 10, 4:37 PM EDT | Flash Flood Warning | PBZ | Washington | 3 hr |
| Aug 10, 4:55 PM EDT | Flash Flood Warning | PBZ | Allegheny, Washington | 77 min |
| Aug 11, 5:19 AM EDT | Flash Flood Warning | PHI | Berks | 3 hr |
| Aug 11, 7:10 AM EDT | Flash Flood Warning | BGM | Bradford, Susquehanna | 3 hr |
| Aug 11, 10:03 AM EDT | Flash Flood Warning | BGM | Bradford, Susquehanna | 3 hr |
| Aug 11, 10:18 AM EDT | Flash Flood Warning | BGM | Bradford | 117 min |
| Aug 11, 1:33 PM EDT | Flash Flood Warning | PHI | Chester, Montgomery | 4 hr |
| Aug 11, 1:40 PM EDT | Flash Flood Warning | PHI | Chester | 4 hr |
| Aug 11, 1:48 PM EDT | Flash Flood Warning | PHI | Delaware, Philadelphia | 4 hr |
| Aug 11, 2:00 PM EDT | Flash Flood Warning | PHI | Bucks, Lehigh, Northampton | 9 hr |
| Aug 11, 2:14 PM EDT | Flash Flood Warning | PHI | Bucks | 3 hr |
| Aug 11, 3:06 PM EDT | Flash Flood Warning | PHI | Northampton | 4 hr |
| Aug 12, 5:46 PM EDT | Flash Flood Warning | CTP | Schuylkill | 3 hr |
| Aug 13, 4:03 AM EDT | Flash Flood Warning | CTP | Lancaster | 3 hr |
| Aug 13, 4:17 AM EDT | Flash Flood Warning | CTP | Columbia, Lycoming, Montour, Northumberland, Union | 9 hr |
| Aug 13, 4:26 AM EDT | Flash Flood Warning | CTP | Dauphin, Lebanon, Schuylkill | 6 hr |
| Aug 13, 6:05 AM EDT | Flash Flood Warning | CTP | Sullivan | 6 hr |
| Aug 13, 6:31 AM EDT | Flash Flood Warning | CTP | Columbia | 6 hr |
| Aug 13, 6:50 AM EDT | Flash Flood Warning | PHI | Berks, Chester, Delaware, Montgomery | 6 hr |
| Aug 13, 7:04 AM EDT | Flash Flood Warning | CTP | Columbia, Lycoming | 6 hr |
| Aug 13, 8:14 AM EDT | Flash Flood Warning | BGM | Bradford | 9 hr |
| Aug 13, 8:43 AM EDT | Flash Flood Warning | PHI | Bucks, Delaware, Lehigh, Montgomery, Northampton, Philadelphia | 4 hr |
| Aug 13, 11:16 AM EDT | Flash Flood Warning | BGM | Bradford | 6 hr |
| Aug 13, 11:23 AM EDT | Flash Flood Warning | CTP | Lycoming, Sullivan | 3 hr |
| Aug 13, 12:20 PM EDT | Flash Flood Warning | PBZ | Armstrong | 87 min |
| Aug 13, 1:13 PM EDT | Flash Flood Warning | PBZ | Allegheny | 2 hr |
| Aug 13, 1:27 PM EDT | Flash Flood Warning | BGM | Bradford | 4 hr |
| Aug 13, 5:20 PM EDT | Flash Flood Warning | BGM | Bradford | 4 hr |
| Aug 13, 5:56 PM EDT | Flash Flood Warning | BGM | Lackawanna, Luzerne, Wayne, Wyoming | 7 hr |
| Aug 13, 6:08 PM EDT | Flash Flood Warning | BGM | Lackawanna, Susquehanna, Wyoming | 7 hr |
| Aug 14, 6:15 AM EDT | Flash Flood Warning | BGM | Bradford | 9 hr |
| Aug 14, 6:41 AM EDT | Flash Flood Warning | CTP | Lycoming, Sullivan | 3 hr |
| Aug 14, 6:50 AM EDT | Flash Flood Warning | BGM | Wyoming | 3 hr |
| Aug 14, 7:18 AM EDT | Flash Flood Warning | BGM | Susquehanna | 9 hr |
| Aug 14, 7:45 AM EDT | Flash Flood Warning | BGM | Bradford, Susquehanna | 8 hr |
| Aug 14, 9:01 AM EDT | Flash Flood Warning | BGM | Susquehanna | 6 hr |
| Aug 14, 9:27 AM EDT | Flash Flood Warning | BGM | Susquehanna, Wayne | 6 hr |
| Aug 14, 9:36 AM EDT | Flash Flood Warning | BGM | Bradford | 6 hr |
| Aug 14, 9:43 AM EDT | Flash Flood Warning | BGM | Wyoming | 6 hr |
| Aug 14, 7:49 PM EDT | Flash Flood Warning | BGM | Bradford, Susquehanna | 5 hr |
| Aug 14, 8:18 PM EDT | Flash Flood Warning | BGM | Bradford, Susquehanna, Wyoming | 4 hr |
| Aug 17, 6:40 PM EDT | Flash Flood Warning | PHI | Berks | 2 hr |
| Aug 21, 7:13 PM EDT | Flash Flood Warning | PBZ | Armstrong, Clarion, Indiana, Jefferson | 3 hr |
| Aug 21, 10:16 PM EDT | Flash Flood Warning | PHI | Berks, Chester, Montgomery | 7 hr |
| Aug 21, 10:26 PM EDT | Flash Flood Warning | CTP | Lancaster, York | 3 hr |
| Aug 21, 11:08 PM EDT | Flash Flood Warning | PHI | Bucks, Lehigh, Northampton | 4 hr |
| Aug 29, 10:29 PM EDT | Flash Flood Warning | PBZ | Fayette | 3 hr |
| Aug 31, 9:58 AM EDT | Flash Flood Warning | CTP | Lebanon | 3 hr |
| Aug 31, 10:09 AM EDT | Flash Flood Warning | PHI | Berks | 7 hr |
| Aug 31, 1:31 PM EDT | Flash Flood Warning | CTP | Lancaster | 9 hr |
| Aug 31, 2:55 PM EDT | Flash Flood Warning | CTP | York | 3 hr |
| Aug 31, 3:59 PM EDT | Flash Flood Warning | PHI | Berks, Chester | 4 hr |
| Aug 31, 4:38 PM EDT | Flash Flood Warning | CTP | Lancaster, York | 3 hr |
| Aug 31, 4:44 PM EDT | Flash Flood Warning | CTP | Adams, Cumberland | 3 hr |
| Aug 31, 5:08 PM EDT | Flash Flood Warning | CTP | York | 3 hr |
| Sep 3, 3:02 PM EDT | Flash Flood Warning | PBZ | Mercer | 116 min |
| Sep 3, 5:32 PM EDT | Flash Flood Warning | BGM | Bradford | 118 min |
| Sep 6, 3:49 PM EDT | Flash Flood Warning | PBZ | Washington | 87 min |
| Sep 7, 6:41 PM EDT | Flash Flood Warning | PHI | Delaware, Philadelphia | 4 hr |
| Sep 10, 1:55 PM EDT | Flash Flood Warning | BGM | Bradford | 3 hr |
| Sep 18, 1:40 AM EDT | Flash Flood Warning | BGM | Bradford | 3 hr |
| Sep 18, 1:46 AM EDT | Flash Flood Warning | BGM | Bradford, Susquehanna | 3 hr |
| Sep 18, 2:20 AM EDT | Flash Flood Warning | CTP | Lancaster, York | 3 hr |
| Sep 18, 5:14 AM EDT | Flash Flood Warning | BGM | Luzerne | 2 hr |
| Sep 21, 9:24 PM EDT | Flash Flood Warning | BGM | Bradford | 3 hr |
| Sep 25, 4:19 PM EDT | Flash Flood Warning | PHI | Bucks, Delaware, Montgomery, Philadelphia | 4 hr |
| Sep 25, 5:14 PM EDT | Flash Flood Warning | PHI | Bucks | 4 hr |
| Sep 25, 5:35 PM EDT | Flash Flood Warning | PHI | Bucks, Delaware, Philadelphia | 4 hr |
| Sep 26, 4:22 PM EDT | Flash Flood Warning | BGM | Bradford | 96 min |
| Oct 2, 3:35 PM EDT | Flash Flood Warning | CLE | Crawford | 111 min |
| Oct 2, 7:30 PM EDT | Flash Flood Warning | BGM | Lackawanna, Luzerne | 3 hr |
| Oct 2, 7:53 PM EDT | Flash Flood Warning | CTP | Columbia, Lycoming, Sullivan | 3 hr |
| Oct 2, 7:59 PM EDT | Flash Flood Warning | CTP | Centre, Clearfield | 3 hr |
| Oct 4, 5:11 PM EDT | Flash Flood Warning | PBZ | Allegheny, Washington, Westmoreland | 94 min |
| Nov 2, 10:53 PM EDT | Flash Flood Warning | PHI | Berks, Bucks, Chester, Lehigh, Montgomery, Northampton | 4 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Bradford County27
- Allegheny County20
- Chester County16
- York County16
- Berks County16
- Lancaster County15
- Susquehanna County15
- Montgomery County14
- Westmoreland County14
- Bucks County14
- Philadelphia County12
- Delaware County11
- Washington County10
- Lycoming County10
- Lebanon County9
- Wyoming County9
- Fayette County8
- Schuylkill County8
- Sullivan County8
- Columbia County8
- Lehigh County8
- Northampton County7
- Armstrong County6
- Dauphin County6
- Montour County6
- Northumberland County6
- Luzerne County6
- Clarion County5
- Wayne County5
- Cumberland County5
- Centre County5
- Forest County4
- Venango County4
- Butler County4
- Adams County4
- Lackawanna County4
- McKean County3
- Crawford County3
- Bedford County3
- Potter County3
20 more counties
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20172019
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.