Alert archive / Pennsylvania / Severe Thunderstorm Watches / 2020
Severe Thunderstorm Watches in Pennsylvania, August 2020
6 severe thunderstorm watches in August 2020. 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 2020. Tap one for its archive.
- Severe Thunderstorm Watches
- 6
- Busiest day
- August 25, 20202 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 1, 3:57 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Beaver, Fayette, Greene, Washington, Westmoreland | 7 hr |
| Aug 25, 1:21 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Allegheny, Armstrong, Beaver, Bedford, Blair and 47 more | 6 hr |
| Aug 25, 3:34 PM EDT | Severe Thunderstorm Watch | SPC | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 7 hr |
| Aug 27, 2:49 PM EDT | Severe Thunderstorm Watch | SPC | Bradford, Cameron, Clinton, Elk, Lackawanna, Luzerne and 7 more | 5 hr |
| Aug 27, 5:32 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Allegheny, Armstrong, Beaver, Bedford, Blair and 28 more | 4 hr |
| Aug 28, 1:37 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Berks, Bucks, Chester, Columbia and 19 more | 8 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Allegheny County3
- Beaver County3
- Fayette County3
- Greene County3
- Washington County3
- Westmoreland County3
- Adams County3
- Bedford County3
- Columbia County3
- Cumberland County3
- Dauphin County3
- Franklin County3
- Fulton County3
- Huntingdon County3
- Juniata County3
- Lancaster County3
- Lebanon County3
- Mifflin County3
- Montour County3
- Northumberland County3
- Perry County3
- Schuylkill County3
- Snyder County3
- York County3
- Armstrong County2
- Blair County2
- Bradford County2
- Butler County2
- Cambria County2
- Cameron County2
- Centre County2
- Clearfield County2
- Clinton County2
- Elk County2
- Indiana County2
- Jefferson County2
- Lackawanna County2
- Luzerne County2
- Lycoming County2
- Potter County2
25 more counties
- Somerset County2
- Sullivan County2
- Tioga County2
- Union County2
- Wyoming County2
- Berks County2
- Bucks County2
- Chester County2
- Delaware County2
- Lehigh County2
- Montgomery County2
- Philadelphia County2
- Clarion County1
- Forest County1
- Lawrence County1
- Mercer County1
- Pike County1
- Susquehanna County1
- Venango County1
- Wayne County1
- Carbon County1
- Monroe County1
- Northampton County1
- McKean County1
- Warren County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20192021
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.