Alert archive / Pennsylvania / Flash Flood Watches / 2021
Flash Flood Watches in Pennsylvania, August 2021
12 flash flood watches in August 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 August 2021. Tap one for its archive.
- Flash Flood Watches
- 12
- Busiest day
- August 17, 20214 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 |
|---|---|---|---|---|
| Aug 17, 11:52 AM EDT | Flash Flood Watch | BGM | Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more | 44 hr |
| Aug 17, 1:28 PM EDT | Flash Flood Watch | PBZ | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 8 more | 27 hr |
| Aug 17, 2:13 PM EDT | Flash Flood Watch | CTP | Adams, Bedford, Blair, Cambria, Cameron, Centre and 27 more | 34 hr |
| Aug 17, 3:09 PM EDT | Flash Flood Watch | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 36 hr |
| Aug 18, 3:23 AM EDT | Flash Flood Watch | CLE | Crawford | 12 hr |
| Aug 21, 3:31 PM EDT | Flash Flood Watch | BGM | Lackawanna, Luzerne, Pike, Susquehanna, Wayne, Wyoming | 48 hr |
| Aug 26, 3:30 PM EDT | Flash Flood Watch | PHI | Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 2 more | 48 hr |
| Aug 27, 4:40 AM EDT | Flash Flood Watch | CTP | Dauphin, Lancaster, Lebanon, York | 17 hr |
| Aug 30, 4:11 AM EDT | Flash Flood Watch | CTP | Adams, Bedford, Blair, Cambria, Centre, Clearfield and 21 more | 67 hr |
| Aug 30, 4:33 AM EDT | Flash Flood Watch | PBZ | Allegheny, Armstrong, Beaver, Butler, Fayette, Greene and 2 more | 57 hr |
| Aug 30, 4:54 AM EDT | Flash Flood Watch | BGM | Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more | 70 hr |
| Aug 30, 5:00 AM EDT | Flash Flood Watch | PHI | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 71 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Lackawanna County3
- Luzerne County3
- Pike County3
- Susquehanna County3
- Wayne County3
- Wyoming County3
- Dauphin County3
- Lancaster County3
- Lebanon County3
- York County3
- Berks County3
- Lehigh County3
- Northampton County3
- Bradford County2
- Allegheny County2
- Armstrong County2
- Beaver County2
- Butler County2
- Fayette County2
- Greene County2
- Washington County2
- Westmoreland County2
- Adams County2
- Bedford County2
- Blair County2
- Cambria County2
- Centre County2
- Clearfield County2
- Clinton County2
- Columbia County2
- Cumberland County2
- Franklin County2
- Fulton County2
- Huntingdon County2
- Juniata County2
- Lycoming County2
- Mifflin County2
- Montour County2
- Northumberland County2
- Perry County2
25 more counties
- Schuylkill County2
- Snyder County2
- Somerset County2
- Sullivan County2
- Union County2
- Carbon County2
- Monroe County2
- Bucks County2
- Chester County2
- Delaware County2
- Montgomery County2
- Philadelphia County2
- Clarion County1
- Forest County1
- Jefferson County1
- Lawrence County1
- Mercer County1
- Venango County1
- Cameron County1
- Elk County1
- McKean County1
- Potter County1
- Tioga County1
- Warren County1
- Crawford 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. Rebuilt daily.