Alert archive / Pennsylvania / Flash Flood Warnings
Flash Flood Warnings in Pennsylvania, 2009
98 flash flood warnings in 2009. 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 2009. Tap one for its archive.
- Flash Flood Warnings
- 98
- Busiest month
- August37 flash flood warnings
- Busiest day
- July 31, 20099 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 |
|---|---|---|---|---|
| May 7, 1:08 AM EDT | Flash Flood Warning | PHI | Chester, Montgomery | 6 hr |
| May 7, 1:43 AM EDT | Flash Flood Warning | PHI | Bucks | 5 hr |
| May 7, 1:51 AM EDT | Flash Flood Warning | PHI | Delaware, Philadelphia | 5 hr |
| May 23, 10:38 PM EDT | Flash Flood Warning | CTP | Bedford, Fulton | 3 hr |
| May 24, 3:17 PM EDT | Flash Flood Warning | BGM | Lackawanna, Luzerne, Wyoming | 3 hr |
| May 24, 3:34 PM EDT | Flash Flood Warning | CTP | Bedford | 3 hr |
| May 24, 3:54 PM EDT | Flash Flood Warning | CTP | Bedford, Somerset | 3 hr |
| May 24, 4:43 PM EDT | Flash Flood Warning | PBZ | Fayette, Greene | 3 hr |
| May 28, 5:16 PM EDT | Flash Flood Warning | CLE | Crawford | 3 hr |
| May 28, 6:03 PM EDT | Flash Flood Warning | CTP | Warren | 3 hr |
| May 28, 7:15 PM EDT | Flash Flood Warning | CTP | McKean | 6 hr |
| May 28, 8:08 PM EDT | Flash Flood Warning | CTP | Huntingdon | 3 hr |
| May 28, 10:07 PM EDT | Flash Flood Warning | CTP | Perry | 6 hr |
| May 28, 11:26 PM EDT | Flash Flood Warning | CTP | Cumberland | 5 hr |
| Jun 9, 9:56 AM EDT | Flash Flood Warning | PHI | Chester | 105 min |
| Jun 9, 2:20 PM EDT | Flash Flood Warning | PHI | Berks, Chester | 3 hr |
| Jun 9, 9:04 PM EDT | Flash Flood Warning | BGM | Luzerne, Wyoming | 80 min |
| Jun 10, 4:38 PM EDT | Flash Flood Warning | CTP | York | 8 hr |
| Jun 10, 9:23 PM EDT | Flash Flood Warning | CTP | Franklin | 3 hr |
| Jun 10, 9:55 PM EDT | Flash Flood Warning | CTP | Dauphin, Lancaster, Lebanon | 4 hr |
| Jun 11, 2:49 PM EDT | Flash Flood Warning | PBZ | Indiana | 3 hr |
| Jun 13, 2:32 PM EDT | Flash Flood Warning | PHI | Bucks | 2 hr |
| Jun 13, 2:33 PM EDT | Flash Flood Warning | PHI | Carbon, Lehigh, Monroe, Northampton | 112 min |
| Jun 13, 2:57 PM EDT | Flash Flood Warning | PHI | Montgomery | 2 hr |
| Jun 13, 4:07 PM EDT | Flash Flood Warning | PHI | Bucks, Montgomery, Philadelphia | 6 hr |
| Jun 13, 6:06 PM EDT | Flash Flood Warning | PHI | Chester | 2 hr |
| Jun 17, 7:01 PM EDT | Flash Flood Warning | PBZ | Allegheny | 6 hr |
| Jun 17, 7:30 PM EDT | Flash Flood Warning | PBZ | Beaver | 3 hr |
| Jun 17, 7:57 PM EDT | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| Jun 17, 9:01 PM EDT | Flash Flood Warning | CTP | Somerset | 4 hr |
| Jun 17, 10:56 PM EDT | Flash Flood Warning | PBZ | Allegheny, Armstrong, Fayette, Indiana, Westmoreland | 3 hr |
| Jun 20, 5:57 AM EDT | Flash Flood Warning | CTP | Blair, Cambria, Clearfield | 4 hr |
| Jun 20, 2:36 PM EDT | Flash Flood Warning | BGM | Susquehanna | 3 hr |
| Jun 30, 9:36 AM EDT | Flash Flood Warning | CLE | Erie | 6 hr |
| Jun 30, 3:13 PM EDT | Flash Flood Warning | PHI | Bucks, Montgomery | 114 min |
| Jul 1, 6:37 PM EDT | Flash Flood Warning | BGM | Bradford | 2 hr |
| Jul 2, 6:40 PM EDT | Flash Flood Warning | BGM | Bradford | 3 hr |
| Jul 2, 7:18 PM EDT | Flash Flood Warning | BGM | Wyoming | 3 hr |
| Jul 3, 3:35 PM EDT | Flash Flood Warning | BGM | Luzerne | 5 hr |
| Jul 11, 10:33 PM EDT | Flash Flood Warning | CTP | Columbia, Montour, Northumberland, Schuylkill, Snyder, Union | 4 hr |
| Jul 21, 12:16 PM EDT | Flash Flood Warning | CTP | Elk, McKean, Warren | 6 hr |
| Jul 21, 9:06 PM EDT | Flash Flood Warning | CTP | Potter | 4 hr |
| Jul 23, 4:09 PM EDT | Flash Flood Warning | CTP | Cumberland | 4 hr |
| Jul 23, 4:57 PM EDT | Flash Flood Warning | CTP | Adams, Cumberland, Franklin | 3 hr |
| Jul 23, 6:36 PM EDT | Flash Flood Warning | CTP | Centre, Clinton, Lycoming, Montour, Northumberland, Union | 3 hr |
| Jul 23, 6:41 PM EDT | Flash Flood Warning | CTP | Adams, York | 99 min |
| Jul 28, 12:04 AM EDT | Flash Flood Warning | PHI | Chester | 53 min |
| Jul 29, 1:51 PM EDT | Flash Flood Warning | PHI | Carbon, Monroe | 9 hr |
| Jul 29, 2:32 PM EDT | Flash Flood Warning | PHI | Monroe | 6 hr |
| Jul 31, 9:20 AM EDT | Flash Flood Warning | BGM | Lackawanna, Luzerne, Wyoming | 6 hr |
| Jul 31, 9:54 AM EDT | Flash Flood Warning | BGM | Lackawanna, Susquehanna, Wayne | 6 hr |
| Jul 31, 10:03 AM EDT | Flash Flood Warning | CTP | Columbia, Lycoming, Montour, Northumberland, Sullivan, Union | 6 hr |
| Jul 31, 10:35 AM EDT | Flash Flood Warning | BGM | Wayne | 6 hr |
| Jul 31, 12:04 PM EDT | Flash Flood Warning | BGM | Lackawanna, Luzerne | 4 hr |
| Jul 31, 2:13 PM EDT | Flash Flood Warning | PHI | Carbon, Monroe | 4 hr |
| Jul 31, 3:04 PM EDT | Flash Flood Warning | PHI | Bucks, Chester, Montgomery | 3 hr |
| Jul 31, 3:16 PM EDT | Flash Flood Warning | BGM | Wyoming | 3 hr |
| Jul 31, 4:08 PM EDT | Flash Flood Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 3 hr |
| Aug 1, 4:01 PM EDT | Flash Flood Warning | CTP | Lancaster, York | 3 hr |
| Aug 2, 9:06 AM EDT | Flash Flood Warning | PHI | Berks, Carbon, Chester, Lehigh, Monroe, Northampton | 4 hr |
| Aug 2, 9:36 AM EDT | Flash Flood Warning | CTP | Lancaster, Lebanon, York | 3 hr |
| Aug 2, 10:08 AM EDT | Flash Flood Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 9 hr |
| Aug 2, 11:07 AM EDT | Flash Flood Warning | BGM | Wayne | 4 hr |
| Aug 2, 4:22 PM EDT | Flash Flood Warning | PHI | Berks | 2 hr |
| Aug 2, 7:49 PM EDT | Flash Flood Warning | CTP | Cumberland | 107 min |
| Aug 9, 4:11 PM EDT | Flash Flood Warning | CTP | McKean, Potter | 3 hr |
| Aug 10, 7:50 AM EDT | Flash Flood Warning | CTP | McKean, Warren | 4 hr |
| Aug 10, 11:43 AM EDT | Flash Flood Warning | CTP | Warren | 3 hr |
| Aug 10, 2:32 PM EDT | Flash Flood Warning | CLE | Erie | 3 hr |
| Aug 10, 3:12 PM EDT | Flash Flood Warning | CTP | Warren | 3 hr |
| Aug 10, 4:32 PM EDT | Flash Flood Warning | CLE | Crawford | 2 hr |
| Aug 11, 3:08 PM EDT | Flash Flood Warning | CTP | McKean, Warren | 3 hr |
| Aug 11, 5:01 PM EDT | Flash Flood Warning | CTP | Adams | 3 hr |
| Aug 12, 2:22 PM EDT | Flash Flood Warning | CTP | Potter | 3 hr |
| Aug 12, 5:18 PM EDT | Flash Flood Warning | PHI | Bucks, Chester, Montgomery | 2 hr |
| Aug 12, 8:54 PM EDT | Flash Flood Warning | PHI | Carbon | 4 hr |
| Aug 12, 9:29 PM EDT | Flash Flood Warning | CTP | Lebanon, Schuylkill | 4 hr |
| Aug 12, 10:33 PM EDT | Flash Flood Warning | PHI | Carbon, Lehigh, Northampton | 4 hr |
| Aug 12, 10:42 PM EDT | Flash Flood Warning | PHI | Berks | 4 hr |
| Aug 12, 11:23 PM EDT | Flash Flood Warning | PHI | Berks, Lehigh, Northampton | 7 hr |
| Aug 12, 11:50 PM EDT | Flash Flood Warning | CTP | Lancaster, York | 3 hr |
| Aug 16, 7:09 PM EDT | Flash Flood Warning | CTP | Somerset | 3 hr |
| Aug 19, 1:35 PM EDT | Flash Flood Warning | BGM | Lackawanna, Luzerne | 63 min |
| Aug 19, 5:04 PM EDT | Flash Flood Warning | PHI | Monroe | 115 min |
| Aug 19, 7:13 PM EDT | Flash Flood Warning | CTP | Cumberland | 3 hr |
| Aug 20, 7:31 PM EDT | Flash Flood Warning | CLE | Crawford, Erie | 93 min |
| Aug 21, 12:00 PM EDT | Flash Flood Warning | CTP | Elk, McKean | 3 hr |
| Aug 21, 2:17 PM EDT | Flash Flood Warning | CTP | Lancaster, York | 2 hr |
| Aug 21, 10:49 PM EDT | Flash Flood Warning | PHI | Chester | 55 min |
| Aug 22, 1:51 AM EDT | Flash Flood Warning | PHI | Montgomery, Philadelphia | 77 min |
| Aug 22, 6:03 AM EDT | Flash Flood Warning | PHI | Montgomery, Philadelphia | 3 hr |
| Aug 22, 6:21 PM EDT | Flash Flood Warning | PHI | Bucks, Northampton | 3 hr |
| Aug 22, 7:00 PM EDT | Flash Flood Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 4 hr |
| Aug 28, 9:16 AM EDT | Flash Flood Warning | PHI | Bucks, Lehigh, Northampton | 4 hr |
| Aug 28, 11:23 PM EDT | Flash Flood Warning | CTP | York | 3 hr |
| Oct 24, 5:41 PM EDT | Flash Flood Warning | PHI | Chester, Delaware | 3 hr |
| Oct 24, 6:02 PM EDT | Flash Flood Warning | PHI | Montgomery | 3 hr |
| Oct 24, 8:01 PM EDT | Flash Flood Warning | PHI | Bucks, Philadelphia | 4 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Chester County13
- Montgomery County12
- Bucks County12
- Philadelphia County8
- York County7
- Luzerne County6
- Warren County6
- McKean County6
- Carbon County6
- Monroe County6
- Northampton County6
- Delaware County5
- Lackawanna County5
- Wyoming County5
- Cumberland County5
- Berks County5
- Lancaster County5
- Lehigh County5
- Bedford County3
- Somerset County3
- Crawford County3
- Lebanon County3
- Erie County3
- Montour County3
- Northumberland County3
- Union County3
- Potter County3
- Adams County3
- Wayne County3
- Fayette County2
- Franklin County2
- Indiana County2
- Allegheny County2
- Westmoreland County2
- Susquehanna County2
- Bradford County2
- Columbia County2
- Schuylkill County2
- Elk County2
- Lycoming County2
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20082010
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.