Alert archive / Pennsylvania / Flash Flood Warnings / 2011
Flash Flood Warnings in Pennsylvania, September 2011
90 flash flood warnings in September 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 flash flood warnings reaches back to 1986.
Flash Flood Warnings by county
Each county as a circle sized by its count in September 2011. Tap one for its archive.
- Flash Flood Warnings
- 90
- Busiest day
- September 7, 201116 flash flood warnings
Over time
By day
Days in UTC, the clock the archive keeps.
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 |
|---|---|---|---|---|
| Sep 4, 11:44 PM EDT | Flash Flood Warning | CTP | Adams, Cumberland, Dauphin, Lancaster, Lebanon, Perry and 1 more | 3 hr |
| Sep 5, 1:41 AM EDT | Flash Flood Warning | CTP | Columbia, Dauphin, Lebanon, Lycoming, Montour, Northumberland and 2 more | 4 hr |
| Sep 5, 10:18 PM EDT | Flash Flood Warning | PHI | Lehigh, Northampton | 4 hr |
| Sep 5, 11:25 PM EDT | Flash Flood Warning | PHI | Berks | 4 hr |
| Sep 6, 11:04 PM EDT | Flash Flood Warning | BGM | Lackawanna, Luzerne, Pike, Wayne | 6 hr |
| Sep 7, 5:01 AM EDT | Flash Flood Warning | BGM | Lackawanna, Luzerne, Wayne | 4 hr |
| Sep 7, 8:38 AM EDT | Flash Flood Warning | BGM | Bradford | 6 hr |
| Sep 7, 8:53 AM EDT | Flash Flood Warning | BGM | Susquehanna | 6 hr |
| Sep 7, 9:33 AM EDT | Flash Flood Warning | CTP | Dauphin, Lancaster, Lebanon, York | 10 hr |
| Sep 7, 10:23 AM EDT | Flash Flood Warning | CTP | Columbia, Dauphin, Lycoming, Montour, Northumberland, Schuylkill and 4 more | 12 hr |
| Sep 7, 11:33 AM EDT | Flash Flood Warning | BGM | Bradford, Susquehanna | 18 hr |
| Sep 7, 12:12 PM EDT | Flash Flood Warning | BGM | Luzerne, Wyoming | 6 hr |
| Sep 7, 1:24 PM EDT | Flash Flood Warning | BGM | Wyoming | 6 hr |
| Sep 7, 2:05 PM EDT | Flash Flood Warning | PHI | Berks | 4 hr |
| Sep 7, 2:25 PM EDT | Flash Flood Warning | BGM | Bradford, Luzerne, Susquehanna, Wyoming | 18 hr |
| Sep 7, 3:06 PM EDT | Flash Flood Warning | PHI | Chester | 4 hr |
| Sep 7, 3:33 PM EDT | Flash Flood Warning | PHI | Berks, Chester | 4 hr |
| Sep 7, 4:14 PM EDT | Flash Flood Warning | CTP | Schuylkill | 6 hr |
| Sep 7, 4:42 PM EDT | Flash Flood Warning | BGM | Lackawanna, Luzerne, Susquehanna, Wayne | 4 hr |
| Sep 7, 7:00 PM EDT | Flash Flood Warning | CTP | Dauphin, Lancaster, Lebanon, York | 6 hr |
| Sep 7, 8:11 PM EDT | Flash Flood Warning | PHI | Berks | 4 hr |
| Sep 7, 9:24 PM EDT | Flash Flood Warning | BGM | Lackawanna, Luzerne, Susquehanna, Wyoming | 6 hr |
| Sep 7, 10:09 PM EDT | Flash Flood Warning | CTP | Columbia, Dauphin, Lycoming, Montour, Northumberland, Schuylkill and 4 more | 6 hr |
| Sep 7, 11:11 PM EDT | Flash Flood Warning | CTP | Adams, Cumberland, Perry | 6 hr |
| Sep 8, 1:25 AM EDT | Flash Flood Warning | PHI | Delaware, Montgomery, Philadelphia | 7 hr |
| Sep 8, 2:26 AM EDT | Flash Flood Warning | PHI | Bucks, Montgomery, Philadelphia | 6 hr |
| Sep 8, 3:15 AM EDT | Flash Flood Warning | PHI | Lehigh, Monroe, Northampton | 6 hr |
| Sep 8, 3:33 AM EDT | Flash Flood Warning | BGM | Susquehanna | 12 hr |
| Sep 8, 4:17 AM EDT | Flash Flood Warning | BGM | Pike, Wayne | 6 hr |
| Sep 8, 7:59 AM EDT | Flash Flood Warning | BGM | Luzerne | 6 hr |
| Sep 8, 8:27 AM EDT | Flash Flood Warning | BGM | Bradford, Susquehanna, Wyoming | 6 hr |
| Sep 8, 8:58 AM EDT | Flash Flood Warning | BGM | Lackawanna | 6 hr |
| Sep 8, 9:40 AM EDT | Flash Flood Warning | BGM | Pike, Wayne | 6 hr |
| Sep 9, 2:35 PM EDT | Flash Flood Warning | CTP | Bedford, Cambria, Somerset | 3 hr |
| Sep 9, 2:50 PM EDT | Flash Flood Warning | CTP | Adams, Cumberland, Franklin, Fulton | 3 hr |
| Sep 9, 5:30 PM EDT | Flash Flood Warning | CTP | Bedford, Blair, Cumberland, Franklin, Fulton, Huntingdon | 3 hr |
| Sep 9, 6:07 PM EDT | Flash Flood Warning | CTP | Adams, Blair, Cumberland, Franklin, Huntingdon, Juniata and 2 more | 3 hr |
| Sep 9, 6:54 PM EDT | Flash Flood Warning | CTP | Bedford, Blair, Cambria, Clearfield | 3 hr |
| Sep 9, 8:19 PM EDT | Flash Flood Warning | CTP | Blair, Cambria, Centre, Clearfield, Huntingdon, Juniata and 2 more | 3 hr |
| Sep 9, 10:08 PM EDT | Flash Flood Warning | CTP | Juniata, Mifflin, Perry, Snyder | 3 hr |
| Sep 9, 11:09 PM EDT | Flash Flood Warning | CTP | Dauphin, Montour, Northumberland, Schuylkill, Snyder, Union | 4 hr |
| Sep 10, 12:32 AM EDT | Flash Flood Warning | CTP | Columbia, Lycoming, Montour, Northumberland, Schuylkill | 5 hr |
| Sep 10, 9:02 AM EDT | Flash Flood Warning | CTP | Cambria, Clearfield | 4 hr |
| Sep 11, 7:31 PM EDT | Flash Flood Warning | CTP | Adams | 3 hr |
| Sep 11, 7:51 PM EDT | Flash Flood Warning | CTP | York | 3 hr |
| Sep 11, 8:19 PM EDT | Flash Flood Warning | PHI | Berks | 3 hr |
| Sep 11, 9:00 PM EDT | Flash Flood Warning | PHI | Chester | 3 hr |
| Sep 11, 9:14 PM EDT | Flash Flood Warning | PHI | Berks, Chester, Montgomery | 110 min |
| Sep 11, 9:21 PM EDT | Flash Flood Warning | CTP | Lancaster | 3 hr |
| Sep 11, 9:38 PM EDT | Flash Flood Warning | CTP | Centre, Clinton, Lycoming, Montour, Northumberland, Union | 3 hr |
| Sep 11, 9:56 PM EDT | Flash Flood Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 4 hr |
| Sep 23, 11:46 AM EDT | Flash Flood Warning | CTP | Adams | 6 hr |
| Sep 23, 12:47 PM EDT | Flash Flood Warning | PHI | Philadelphia | 2 hr |
| Sep 23, 1:46 PM EDT | Flash Flood Warning | CTP | Schuylkill | 3 hr |
| Sep 23, 1:50 PM EDT | Flash Flood Warning | BGM | Luzerne | 6 hr |
| Sep 23, 2:42 PM EDT | Flash Flood Warning | CTP | Dauphin | 3 hr |
| Sep 23, 4:04 PM EDT | Flash Flood Warning | CTP | Cumberland, York | 5 hr |
| Sep 23, 6:16 PM EDT | Flash Flood Warning | CTP | Lancaster | 3 hr |
| Sep 27, 8:35 AM EDT | Flash Flood Warning | CTP | Adams, York | 115 min |
| Sep 27, 8:37 AM EDT | Flash Flood Warning | CTP | Clinton | 4 hr |
| Sep 27, 10:39 AM EDT | Flash Flood Warning | CTP | Bedford, Centre, Cumberland, Franklin, Fulton, Huntingdon and 5 more | 5 hr |
| Sep 27, 1:03 PM EDT | Flash Flood Warning | CTP | Columbia, Lycoming, Montour, Northumberland, Snyder, Sullivan and 1 more | 4 hr |
| Sep 27, 1:10 PM EDT | Flash Flood Warning | CTP | Franklin | 2 hr |
| Sep 27, 2:53 PM EDT | Flash Flood Warning | CTP | Adams, Cumberland, Franklin, York | 2 hr |
| Sep 27, 3:43 PM EDT | Flash Flood Warning | CTP | Cumberland, Dauphin, Lebanon, Northumberland, Schuylkill, York | 3 hr |
| Sep 27, 4:56 PM EDT | Flash Flood Warning | CTP | Columbia, Lebanon, Schuylkill | 3 hr |
| Sep 27, 5:47 PM EDT | Flash Flood Warning | BGM | Wyoming | 118 min |
| Sep 27, 7:14 PM EDT | Flash Flood Warning | BGM | Lackawanna, Luzerne | 3 hr |
| Sep 27, 7:17 PM EDT | Flash Flood Warning | BGM | Luzerne | 3 hr |
| Sep 27, 7:56 PM EDT | Flash Flood Warning | CTP | Columbia, Dauphin, Lebanon, Montour, Northumberland, Schuylkill | 2 hr |
| Sep 27, 9:46 PM EDT | Flash Flood Warning | BGM | Luzerne, Wyoming | 3 hr |
| Sep 27, 10:13 PM EDT | Flash Flood Warning | BGM | Luzerne | 3 hr |
| Sep 27, 10:54 PM EDT | Flash Flood Warning | BGM | Wyoming | 3 hr |
| Sep 28, 12:28 PM EDT | Flash Flood Warning | BGM | Luzerne | 2 hr |
| Sep 28, 1:34 PM EDT | Flash Flood Warning | BGM | Luzerne, Wyoming | 3 hr |
| Sep 28, 2:21 PM EDT | Flash Flood Warning | CTP | Cumberland, Dauphin, Perry | 114 min |
| Sep 28, 2:55 PM EDT | Flash Flood Warning | CTP | Columbia, Dauphin, Lancaster, Lebanon, Northumberland, Schuylkill and 1 more | 3 hr |
| Sep 28, 3:38 PM EDT | Flash Flood Warning | CTP | Columbia, Lycoming, Montour, Northumberland, Schuylkill, Snyder and 1 more | 6 hr |
| Sep 28, 4:06 PM EDT | Flash Flood Warning | CTP | Columbia, Lycoming, Montour, Northumberland, Sullivan, Tioga | 3 hr |
| Sep 28, 4:12 PM EDT | Flash Flood Warning | CTP | Cumberland, Dauphin, Lancaster, Perry, York | 3 hr |
| Sep 28, 4:36 PM EDT | Flash Flood Warning | PHI | Berks, Chester | 3 hr |
| Sep 28, 5:04 PM EDT | Flash Flood Warning | BGM | Luzerne, Wyoming | 9 hr |
| Sep 28, 6:41 PM EDT | Flash Flood Warning | PHI | Carbon, Lehigh, Monroe, Northampton | 3 hr |
| Sep 28, 7:26 PM EDT | Flash Flood Warning | BGM | Susquehanna, Wyoming | 6 hr |
| Sep 28, 7:41 PM EDT | Flash Flood Warning | BGM | Luzerne, Wyoming | 72 min |
| Sep 28, 8:18 PM EDT | Flash Flood Warning | CTP | Columbia, Dauphin, Northumberland, Schuylkill | 3 hr |
| Sep 29, 12:16 AM EDT | Flash Flood Warning | BGM | Bradford, Susquehanna, Wyoming | 4 hr |
| Sep 29, 1:29 AM EDT | Flash Flood Warning | BGM | Luzerne, Susquehanna, Wyoming | 6 hr |
| Sep 29, 1:53 AM EDT | Flash Flood Warning | BGM | Lackawanna, Luzerne, Wayne | 3 hr |
| Sep 29, 7:32 AM EDT | Flash Flood Warning | BGM | Susquehanna | 118 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Luzerne County18
- Dauphin County14
- Wyoming County14
- Northumberland County13
- Schuylkill County13
- Cumberland County11
- Columbia County11
- Susquehanna County11
- Montour County10
- York County9
- Adams County8
- Lebanon County8
- Perry County8
- Lycoming County8
- Snyder County8
- Lancaster County7
- Berks County7
- Lackawanna County7
- Union County7
- Wayne County6
- Chester County6
- Franklin County6
- Sullivan County5
- Bradford County5
- Montgomery County4
- Philadelphia County4
- Bedford County4
- Cambria County4
- Blair County4
- Huntingdon County4
- Juniata County4
- Mifflin County4
- Lehigh County3
- Northampton County3
- Pike County3
- Tioga County3
- Fulton County3
- Clearfield County3
- Centre County3
- Delaware County2
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.