Alert archive / Pennsylvania / Areal Flood Warnings
Areal Flood Warnings in Pennsylvania, 2020
70 areal flood warnings in 2020. 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 areal flood warnings reaches back to 2005.
Areal Flood Warnings by county
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Areal Flood Warnings
- 70
- Busiest month
- December15 areal flood warnings
- Busiest day
- December 25, 202013 areal 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 25, 10:32 AM EST | Areal Flood Warning | PHI | Chester, Delaware | 4 hr |
| Jan 25, 11:55 AM EST | Areal Flood Warning | PHI | Chester, Lehigh, Montgomery, Philadelphia | 3 hr |
| Jan 25, 12:02 PM EST | Areal Flood Warning | PHI | Chester, Delaware, Philadelphia | 3 hr |
| Jan 25, 12:57 PM EST | Areal Flood Warning | PHI | Chester | 5 hr |
| Jan 25, 2:59 PM EST | Areal Flood Warning | PHI | Chester, Delaware, Philadelphia | 3 hr |
| Jan 25, 3:00 PM EST | Areal Flood Warning | PHI | Chester, Lehigh, Montgomery, Philadelphia | 4 hr |
| Jan 25, 3:00 PM EST | Areal Flood Warning | PHI | Chester, Delaware | 2 hr |
| Jan 25, 4:05 PM EST | Areal Flood Warning | PHI | Montgomery, Philadelphia | 6 hr |
| Feb 13, 7:36 AM EST | Areal Flood Warning | PBZ | Greene, Washington | 8 hr |
| Mar 20, 1:01 PM EDT | Areal Flood Warning | PBZ | Beaver | 3 hr |
| Mar 20, 1:06 PM EDT | Areal Flood Warning | PBZ | Venango | 4 hr |
| Mar 20, 2:03 PM EDT | Areal Flood Warning | PBZ | Beaver, Butler, Lawrence | 3 hr |
| Mar 20, 2:33 PM EDT | Areal Flood Warning | PBZ | Clarion, Jefferson, Venango | 3 hr |
| Mar 20, 3:32 PM EDT | Areal Flood Warning | PBZ | Allegheny, Butler | 3 hr |
| Mar 20, 4:07 PM EDT | Areal Flood Warning | PBZ | Beaver | 16 hr |
| Mar 28, 7:09 PM EDT | Areal Flood Warning | PBZ | Allegheny, Armstrong, Beaver, Butler, Lawrence, Westmoreland | 3 hr |
| Mar 28, 9:13 PM EDT | Areal Flood Warning | PBZ | Armstrong, Indiana, Jefferson, Westmoreland | 6 hr |
| Mar 28, 9:58 PM EDT | Areal Flood Warning | PBZ | Allegheny, Armstrong, Beaver, Butler, Lawrence, Westmoreland | 5 hr |
| Mar 29, 12:32 AM EDT | Areal Flood Warning | PBZ | Allegheny, Beaver, Fayette, Greene, Washington, Westmoreland | 8 hr |
| Apr 13, 11:09 AM EDT | Areal Flood Warning | PHI | Chester, Delaware | 3 hr |
| Apr 13, 2:23 PM EDT | Areal Flood Warning | PHI | Montgomery, Philadelphia | 4 hr |
| Apr 13, 4:35 PM EDT | Areal Flood Warning | PHI | Montgomery | 2 hr |
| Apr 30, 2:12 PM EDT | Areal Flood Warning | CTP | Adams, Clinton, Cumberland, Juniata, Lycoming, Northumberland and 5 more | 6 hr |
| Apr 30, 4:39 PM EDT | Areal Flood Warning | CTP | Columbia, Dauphin, Lancaster, Lebanon, Lycoming, Montour and 4 more | 6 hr |
| Apr 30, 4:47 PM EDT | Areal Flood Warning | BGM | Bradford | 9 hr |
| Apr 30, 5:43 PM EDT | Areal Flood Warning | CTP | Tioga | 3 hr |
| Apr 30, 8:19 PM EDT | Areal Flood Warning | BGM | Bradford, Wyoming | 6 hr |
| Apr 30, 10:21 PM EDT | Areal Flood Warning | BGM | Bradford, Susquehanna | 6 hr |
| Jun 4, 9:12 PM EDT | Areal Flood Warning | CTP | Lebanon, Schuylkill | 6 hr |
| Jul 10, 4:48 PM EDT | Areal Flood Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 4 hr |
| Jul 10, 7:13 PM EDT | Areal Flood Warning | PBZ | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 4 more | 107 min |
| Jul 10, 9:19 PM EDT | Areal Flood Warning | PHI | Montgomery, Philadelphia | 6 hr |
| Jul 10, 9:36 PM EDT | Areal Flood Warning | PHI | Carbon, Lehigh, Monroe, Northampton | 8 hr |
| Jul 11, 12:03 PM EDT | Areal Flood Warning | CLE | Erie | 5 hr |
| Jul 11, 1:04 PM EDT | Areal Flood Warning | CLE | Crawford | 4 hr |
| Jul 12, 8:35 PM EDT | Areal Flood Warning | PBZ | Armstrong, Indiana | 2 hr |
| Jul 19, 3:01 PM EDT | Areal Flood Warning | CLE | Crawford | 4 hr |
| Aug 2, 8:28 AM EDT | Areal Flood Warning | PHI | Berks | 3 hr |
| Aug 4, 1:56 PM EDT | Areal Flood Warning | CTP | Lancaster | 3 hr |
| Aug 4, 1:59 PM EDT | Areal Flood Warning | PHI | Chester, Delaware | 9 hr |
| Aug 4, 2:09 PM EDT | Areal Flood Warning | PHI | Berks, Chester, Delaware, Montgomery, Philadelphia | 15 hr |
| Aug 4, 2:47 PM EDT | Areal Flood Warning | PHI | Bucks | 9 hr |
| Aug 4, 3:42 PM EDT | Areal Flood Warning | PHI | Lehigh, Northampton | 4 hr |
| Aug 4, 7:29 PM EDT | Areal Flood Warning | PHI | Lehigh, Northampton | 12 hr |
| Aug 4, 8:22 PM EDT | Areal Flood Warning | PHI | Carbon | 9 hr |
| Aug 7, 7:17 PM EDT | Areal Flood Warning | PHI | Bucks, Montgomery | 3 hr |
| Aug 7, 9:44 PM EDT | Areal Flood Warning | PHI | Chester | 7 hr |
| Aug 7, 9:48 PM EDT | Areal Flood Warning | PHI | Delaware | 105 min |
| Aug 12, 5:09 PM EDT | Areal Flood Warning | PHI | Berks | 51 min |
| Aug 28, 10:47 PM EDT | Areal Flood Warning | PBZ | Beaver | 3 hr |
| Nov 30, 2:17 PM EST | Areal Flood Warning | PHI | Berks, Bucks, Lehigh, Montgomery | 9 hr |
| Nov 30, 2:48 PM EST | Areal Flood Warning | PHI | Chester, Delaware, Montgomery | 8 hr |
| Nov 30, 3:26 PM EST | Areal Flood Warning | PHI | Berks, Bucks, Carbon, Lehigh, Monroe, Northampton | 4 hr |
| Nov 30, 3:53 PM EST | Areal Flood Warning | PHI | Monroe, Northampton | 16 hr |
| Nov 30, 4:17 PM EST | Areal Flood Warning | PHI | Bucks, Delaware, Montgomery, Philadelphia | 10 hr |
| Nov 30, 11:15 PM EST | Areal Flood Warning | PHI | Philadelphia | 4 hr |
| Dec 24, 6:29 PM EST | Areal Flood Warning | CTP | Lycoming, Sullivan | 10 hr |
| Dec 24, 9:38 PM EST | Areal Flood Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 14 hr |
| Dec 24, 10:21 PM EST | Areal Flood Warning | PHI | Bucks | 14 hr |
| Dec 24, 11:39 PM EST | Areal Flood Warning | CTP | Tioga | 7 hr |
| Dec 24, 11:48 PM EST | Areal Flood Warning | PHI | Bucks | 15 hr |
| Dec 24, 11:54 PM EST | Areal Flood Warning | PHI | Lehigh, Monroe, Northampton | 12 hr |
| Dec 25, 12:53 AM EST | Areal Flood Warning | PHI | Chester | 6 hr |
| Dec 25, 1:40 AM EST | Areal Flood Warning | BGM | Bradford | 6 hr |
| Dec 25, 1:56 AM EST | Areal Flood Warning | PHI | Bucks, Philadelphia | 7 hr |
| Dec 25, 3:29 AM EST | Areal Flood Warning | PHI | Berks | 6 hr |
| Dec 25, 3:58 AM EST | Areal Flood Warning | CTP | Columbia, Dauphin, Lebanon, Montour, Northumberland, Schuylkill | 3 hr |
| Dec 25, 4:31 AM EST | Areal Flood Warning | PHI | Carbon, Lehigh, Monroe, Northampton | 7 hr |
| Dec 25, 5:53 AM EST | Areal Flood Warning | BGM | Bradford, Lackawanna, Luzerne, Susquehanna, Wayne, Wyoming | 6 hr |
| Dec 25, 12:13 PM EST | Areal Flood Warning | PHI | Carbon, Monroe | 9 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Chester County15
- Montgomery County13
- Philadelphia County13
- Delaware County12
- Lehigh County9
- Beaver County8
- Bucks County8
- Northampton County7
- Monroe County6
- Berks County6
- Butler County5
- Allegheny County5
- Armstrong County5
- Westmoreland County5
- Bradford County5
- Carbon County5
- Lawrence County4
- Washington County3
- Indiana County3
- Lycoming County3
- Northumberland County3
- Tioga County3
- Lebanon County3
- Schuylkill County3
- Greene County2
- Venango County2
- Clarion County2
- Jefferson County2
- Fayette County2
- York County2
- Columbia County2
- Dauphin County2
- Lancaster County2
- Montour County2
- Sullivan County2
- Wyoming County2
- Susquehanna County2
- Crawford County2
- Adams County1
- Clinton County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20192021
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. Warning verification from the Mesonet's Cow. Rebuilt daily.