Alert archive / Pennsylvania / Flash Flood Watches / 2021
Flash Flood Watches in Pennsylvania, September 2021
6 flash flood watches in September 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 flash flood watches reaches back to 2005.
Flash Flood Watches by county
Each county as a circle sized by its count in September 2021. Tap one for its archive.
- Flash Flood Watches
- 6
- Busiest day
- September 22, 20213 flash flood watches
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 7, 2:33 PM EDT | Flash Flood Watch | PHI | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 37 hr |
| Sep 7, 3:28 PM EDT | Flash Flood Watch | BGM | Lackawanna, Luzerne, Pike, Wayne | 35 hr |
| Sep 8, 6:21 PM EDT | Flash Flood Watch | CTP | Adams, Lancaster, York | 7 hr |
| Sep 22, 3:24 AM EDT | Flash Flood Watch | PHI | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 41 hr |
| Sep 22, 3:42 AM EDT | Flash Flood Watch | CTP | Adams, Bedford, Blair, Cambria, Cameron, Centre and 26 more | 33 hr |
| Sep 22, 3:05 PM EDT | Flash Flood Watch | BGM | Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more | 37 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Berks County2
- Bucks County2
- Carbon County2
- Chester County2
- Delaware County2
- Lehigh County2
- Monroe County2
- Montgomery County2
- Northampton County2
- Philadelphia County2
- Lackawanna County2
- Luzerne County2
- Pike County2
- Wayne County2
- Adams County2
- Lancaster County2
- York County2
- Bedford County1
- Blair County1
- Cambria County1
- Cameron County1
- Centre County1
- Clearfield County1
- Clinton County1
- Columbia County1
- Cumberland County1
- Dauphin County1
- Elk County1
- Franklin County1
- Fulton County1
- Huntingdon County1
- Juniata County1
- Lebanon County1
- Lycoming County1
- McKean County1
- Mifflin County1
- Montour County1
- Northumberland County1
- Perry County1
- Potter County1
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. Warning verification from the Mesonet's Cow. Rebuilt daily.