Alert archive / Pennsylvania / Severe Thunderstorm Watches / 2011
Severe Thunderstorm Watches in Pennsylvania, August 2011
8 severe thunderstorm watches in August 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 severe thunderstorm watches reaches back to 1997.
Severe Thunderstorm Watches by county
Each county as a circle sized by its count in August 2011. Tap one for its archive.
- Severe Thunderstorm Watches
- 8
- Busiest day
- August 9, 20112 severe thunderstorm 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 7, 5:49 PM EDT | Severe Thunderstorm Watch | SPC | Fayette, Greene, Washington | 4 hr |
| Aug 9, 4:16 PM EDT | Severe Thunderstorm Watch | SPC | Berks, Bradford, Bucks, Carbon, Chester, Columbia and 19 more | 5 hr |
| Aug 9, 6:56 PM EDT | Severe Thunderstorm Watch | SPC | Crawford, Erie, Lawrence, Mercer | 5 hr |
| Aug 19, 1:04 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bucks, Carbon, Chester, Columbia and 28 more | 8 hr |
| Aug 21, 12:52 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Berks, Blair, Bucks, Cambria and 31 more | 8 hr |
| Aug 21, 1:20 PM EDT | Severe Thunderstorm Watch | SPC | Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more | 8 hr |
| Aug 24, 9:18 PM EDT | Severe Thunderstorm Watch | SPC | Crawford, Erie | 6 hr |
| Aug 25, 12:42 AM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Cambria, Cameron and 15 more | 5 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Berks County3
- Bucks County3
- Carbon County3
- Chester County3
- Columbia County3
- Delaware County3
- Lackawanna County3
- Lancaster County3
- Lebanon County3
- Lehigh County3
- Luzerne County3
- Monroe County3
- Montgomery County3
- Montour County3
- Northampton County3
- Northumberland County3
- Philadelphia County3
- Pike County3
- Schuylkill County3
- Susquehanna County3
- Wayne County3
- Wyoming County3
- York County3
- Washington County2
- Bradford County2
- Sullivan County2
- Crawford County2
- Erie County2
- Lawrence County2
- Mercer County2
- Adams County2
- Cumberland County2
- Dauphin County2
- Franklin County2
- Fulton County2
- Huntingdon County2
- Juniata County2
- Mifflin County2
- Perry County2
- Snyder County2
27 more counties
- Union County2
- Cambria County2
- Clearfield County2
- Fayette County1
- Greene County1
- Bedford County1
- Blair County1
- Centre County1
- Clinton County1
- Lycoming County1
- Somerset County1
- Allegheny County1
- Armstrong County1
- Beaver County1
- Butler County1
- Cameron County1
- Clarion County1
- Elk County1
- Forest County1
- Indiana County1
- Jefferson County1
- McKean County1
- Potter County1
- Tioga County1
- Venango County1
- Warren County1
- Westmoreland County1
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. Warning verification from the Mesonet's Cow. Rebuilt daily.