Alert archive / Pennsylvania / River Flood Warnings
River Flood Warnings in Pennsylvania, 2021
85 river flood warnings in 2021. 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 2021. Tap one for its archive.
- River Flood Warnings
- 85
- Busiest month
- September45 river flood warnings
- Busiest day
- September 1, 202128 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 |
|---|---|---|---|---|
| Feb 27, 11:00 AM EST | River Flood Warning | PBZ | Fayette, Greene | 61 hr |
| Feb 27, 11:00 AM EST | River Flood Warning | PBZ | Fayette, Washington, Westmoreland | 3 days |
| Feb 27, 11:00 AM EST | River Flood Warning | PBZ | Allegheny, Washington, Westmoreland | 3 days |
| Feb 28, 11:10 AM EST | River Flood Warning | PBZ | Fayette, Greene | 38 hr |
| Feb 28, 11:13 AM EST | River Flood Warning | PBZ | Fayette | 45 hr |
| Feb 28, 7:43 PM EST | River Flood Warning | PHI | Chester | 3 hr |
| Mar 1, 8:04 AM EST | River Flood Warning | CTP | Somerset | 6 hr |
| Mar 1, 2:40 PM EST | River Flood Warning | PBZ | Allegheny, Westmoreland | 10 hr |
| Mar 24, 8:06 PM EDT | River Flood Warning | PHI | Chester | 3 hr |
| Jun 8, 4:25 PM EDT | River Flood Warning | PHI | Chester | 11 hr |
| Jun 8, 7:14 PM EDT | River Flood Warning | PHI | Chester, Delaware | 18 hr |
| Aug 19, 12:44 AM EDT | River Flood Warning | PHI | Chester | 5 hr |
| Aug 19, 9:53 AM EDT | River Flood Warning | BGM | Bradford | 6 hr |
| Aug 23, 12:32 AM EDT | River Flood Warning | PHI | Monroe | 10 hr |
| Aug 23, 12:55 AM EDT | River Flood Warning | PHI | Monroe | 10 hr |
| Aug 23, 3:50 AM EDT | River Flood Warning | PHI | Carbon | 3 hr |
| Aug 23, 3:50 AM EDT | River Flood Warning | PHI | Lehigh, Northampton | 11 hr |
| Aug 23, 6:27 AM EDT | River Flood Warning | BGM | Lackawanna | 4 hr |
| Aug 31, 11:24 AM EDT | River Flood Warning | CTP | Perry | 47 hr |
| Aug 31, 11:25 AM EDT | River Flood Warning | CTP | Huntingdon | 57 hr |
| Aug 31, 11:27 AM EDT | River Flood Warning | CTP | Blair, Huntingdon | 58 hr |
| Aug 31, 11:30 AM EDT | River Flood Warning | CTP | Dauphin, Lebanon | 3 days |
| Aug 31, 11:30 AM EDT | River Flood Warning | CTP | Lebanon, Schuylkill | 67 hr |
| Aug 31, 11:33 AM EDT | River Flood Warning | CTP | Cumberland | 3 days |
| Aug 31, 11:33 AM EDT | River Flood Warning | CTP | Blair, Huntingdon | 52 hr |
| Aug 31, 11:33 AM EDT | River Flood Warning | CTP | Cumberland, York | 52 hr |
| Aug 31, 11:33 AM EDT | River Flood Warning | CTP | Lancaster, York | 55 hr |
| Aug 31, 12:12 PM EDT | River Flood Warning | CTP | Somerset | 61 hr |
| Sep 1, 9:38 AM EDT | River Flood Warning | BGM | Pike, Wayne | 30 hr |
| Sep 1, 11:04 AM EDT | River Flood Warning | CTP | Snyder, Union | 17 hr |
| Sep 1, 11:04 AM EDT | River Flood Warning | CTP | Cambria | 17 hr |
| Sep 1, 11:04 AM EDT | River Flood Warning | CTP | Huntingdon | 23 hr |
| Sep 1, 11:04 AM EDT | River Flood Warning | CTP | Juniata, Mifflin | 20 hr |
| Sep 1, 11:04 AM EDT | River Flood Warning | CTP | Bedford, Huntingdon | 30 hr |
| Sep 1, 11:04 AM EDT | River Flood Warning | CTP | Dauphin | 55 hr |
| Sep 1, 11:30 AM EDT | River Flood Warning | PBZ | Indiana, Westmoreland | 16 hr |
| Sep 1, 11:30 AM EDT | River Flood Warning | PBZ | Fayette | 39 hr |
| Sep 1, 11:30 AM EDT | River Flood Warning | PBZ | Fayette, Washington, Westmoreland | 28 hr |
| Sep 1, 11:30 AM EDT | River Flood Warning | PBZ | Allegheny, Westmoreland | 40 hr |
| Sep 1, 11:30 AM EDT | River Flood Warning | PBZ | Allegheny, Washington, Westmoreland | 33 hr |
| Sep 1, 3:55 PM EDT | River Flood Warning | PHI | Montgomery | 36 hr |
| Sep 1, 3:55 PM EDT | River Flood Warning | PHI | Chester, Montgomery, Philadelphia | 43 hr |
| Sep 1, 3:55 PM EDT | River Flood Warning | PHI | Montgomery, Philadelphia | 41 hr |
| Sep 1, 3:55 PM EDT | River Flood Warning | PHI | Philadelphia | 39 hr |
| Sep 1, 3:55 PM EDT | River Flood Warning | PHI | Berks | 24 hr |
| Sep 1, 4:02 PM EDT | River Flood Warning | PHI | Monroe | 24 hr |
| Sep 1, 4:10 PM EDT | River Flood Warning | PHI | Monroe | 19 hr |
| Sep 1, 4:12 PM EDT | River Flood Warning | PHI | Lehigh, Northampton | 25 hr |
| Sep 1, 4:12 PM EDT | River Flood Warning | PHI | Lehigh, Northampton | 24 hr |
| Sep 1, 4:12 PM EDT | River Flood Warning | PHI | Carbon | 15 hr |
| Sep 1, 4:20 PM EDT | River Flood Warning | PHI | Montgomery | 22 hr |
| Sep 1, 4:21 PM EDT | River Flood Warning | PHI | Bucks | 29 hr |
| Sep 1, 4:44 PM EDT | River Flood Warning | BGM | Lackawanna | 13 hr |
| Sep 1, 5:07 PM EDT | River Flood Warning | PHI | Chester | 17 hr |
| Sep 1, 6:38 PM EDT | River Flood Warning | PHI | Chester, Delaware | 26 hr |
| Sep 1, 7:53 PM EDT | River Flood Warning | PHI | Delaware | 13 hr |
| Sep 1, 8:29 PM EDT | River Flood Warning | PHI | Lehigh | 10 hr |
| Sep 1, 9:47 PM EDT | River Flood Warning | PHI | Berks | 18 hr |
| Sep 1, 10:29 PM EDT | River Flood Warning | PHI | Bucks | 49 hr |
| Sep 1, 10:32 PM EDT | River Flood Warning | PHI | Bucks | 31 hr |
| Sep 2, 4:45 AM EDT | River Flood Warning | PHI | Bucks | 37 hr |
| Sep 2, 4:45 AM EDT | River Flood Warning | PHI | Northampton | 37 hr |
| Sep 2, 4:45 AM EDT | River Flood Warning | PHI | Bucks | 37 hr |
| Sep 2, 4:45 AM EDT | River Flood Warning | PHI | Bucks | 33 hr |
| Sep 2, 4:45 AM EDT | River Flood Warning | PHI | Bucks | 34 hr |
| Sep 2, 4:45 AM EDT | River Flood Warning | PHI | Monroe, Northampton | 5 hr |
| Sep 2, 5:02 AM EDT | River Flood Warning | PHI | Lehigh | 11 hr |
| Sep 23, 7:44 AM EDT | River Flood Warning | CTP | Perry | 23 hr |
| Sep 23, 7:44 AM EDT | River Flood Warning | CTP | Centre, Clinton | 11 hr |
| Sep 23, 10:10 AM EDT | River Flood Warning | CTP | Snyder, Union | 26 hr |
| Sep 23, 1:48 PM EDT | River Flood Warning | PHI | Chester | 5 hr |
| Sep 23, 5:36 PM EDT | River Flood Warning | CTP | Lebanon, Schuylkill | 12 hr |
| Sep 23, 10:42 PM EDT | River Flood Warning | CTP | Cumberland | 10 hr |
| Oct 26, 3:04 PM EDT | River Flood Warning | BGM | Wayne | 36 hr |
| Oct 26, 3:05 PM EDT | River Flood Warning | BGM | Pike | 42 hr |
| Oct 26, 4:26 PM EDT | River Flood Warning | BGM | Susquehanna | 32 hr |
| Oct 26, 6:39 PM EDT | River Flood Warning | BGM | Pike, Wayne | 21 hr |
| Oct 27, 12:14 AM EDT | River Flood Warning | BGM | Bradford | 44 hr |
| Oct 27, 12:50 AM EDT | River Flood Warning | BGM | Wyoming | 7 hr |
| Oct 27, 4:26 AM EDT | River Flood Warning | PHI | Monroe, Northampton | 26 hr |
| Oct 27, 4:26 AM EDT | River Flood Warning | PHI | Northampton | 38 hr |
| Oct 27, 9:55 AM EDT | River Flood Warning | PHI | Bucks | 29 hr |
| Oct 27, 10:16 AM EDT | River Flood Warning | BGM | Bradford | 19 hr |
| Oct 27, 10:17 PM EDT | River Flood Warning | BGM | Wyoming | 12 hr |
| Oct 30, 3:45 AM EDT | River Flood Warning | BGM | Bradford | 23 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Chester County9
- Bucks County8
- Westmoreland County7
- Northampton County7
- Fayette County6
- Monroe County6
- Lehigh County5
- Huntingdon County5
- Washington County4
- Allegheny County4
- Bradford County4
- Montgomery County4
- Delaware County3
- Lebanon County3
- Cumberland County3
- Pike County3
- Wayne County3
- Philadelphia County3
- Greene County2
- Somerset County2
- Carbon County2
- Lackawanna County2
- Perry County2
- Blair County2
- Dauphin County2
- Schuylkill County2
- York County2
- Snyder County2
- Union County2
- Berks County2
- Wyoming County2
- Lancaster County1
- Cambria County1
- Juniata County1
- Mifflin County1
- Bedford County1
- Indiana County1
- Centre County1
- Clinton County1
- Susquehanna County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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.