Alert archive / Pennsylvania / Severe Thunderstorm Watches / 2021
Severe Thunderstorm Watches in Pennsylvania, June 2021
14 severe thunderstorm watches in June 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 severe thunderstorm watches reaches back to 1997.
Severe Thunderstorm Watches by county
Each county as a circle sized by its count in June 2021. Tap one for its archive.
- Severe Thunderstorm Watches
- 14
- Busiest day
- June 21, 20214 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 |
|---|---|---|---|---|
| Jun 3, 2:48 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bucks, Carbon, Chester, Cumberland and 13 more | 6 hr |
| Jun 4, 3:09 PM EDT | Severe Thunderstorm Watch | SPC | Bucks, Chester, Delaware, Montgomery, Philadelphia | 5 hr |
| Jun 13, 12:50 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 9 more | 7 hr |
| Jun 13, 3:26 PM EDT | Severe Thunderstorm Watch | SPC | Blair, Bradford, Cambria, Cameron, Centre, Clearfield and 20 more | 7 hr |
| Jun 14, 11:46 AM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Bedford, Blair, Butler and 20 more | 6 hr |
| Jun 14, 2:06 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bucks, Carbon, Chester, Columbia and 22 more | 9 hr |
| Jun 21, 12:31 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Cambria, Cameron and 19 more | 7 hr |
| Jun 21, 2:20 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Blair, Centre, Clinton, Columbia and 19 more | 6 hr |
| Jun 21, 3:45 PM EDT | Severe Thunderstorm Watch | SPC | Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more | 7 hr |
| Jun 21, 4:33 PM EDT | Severe Thunderstorm Watch | SPC | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 6 hr |
| Jun 30, 11:47 AM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 9 more | 7 hr |
| Jun 30, 12:46 PM EDT | Severe Thunderstorm Watch | SPC | Bedford, Blair, Cambria, Cameron, Centre, Clearfield and 20 more | 7 hr |
| Jun 30, 3:21 PM EDT | Severe Thunderstorm Watch | SPC | Berks, Bradford, Carbon, Lackawanna, Lehigh, Luzerne and 6 more | 7 hr |
| Jun 30, 4:51 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Cumberland, Dauphin, Franklin, Lancaster, Lebanon and 3 more | 3 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Adams County4
- Berks County4
- Bucks County4
- Carbon County4
- Chester County4
- Cumberland County4
- Dauphin County4
- Delaware County4
- Franklin County4
- Lancaster County4
- Lebanon County4
- Lehigh County4
- Monroe County4
- Montgomery County4
- Northampton County4
- Perry County4
- Philadelphia County4
- Schuylkill County4
- York County4
- Allegheny County4
- Armstrong County4
- Beaver County4
- Butler County4
- Clarion County4
- Fayette County4
- Forest County4
- Greene County4
- Indiana County4
- Jefferson County4
- Lawrence County4
- Venango County4
- Washington County4
- Westmoreland County4
- Blair County4
- Cambria County4
- Cameron County4
- Centre County4
- Clearfield County4
- Clinton County4
- Columbia County4
27 more counties
- Elk County4
- Huntingdon County4
- Juniata County4
- Luzerne County4
- Lycoming County4
- Mifflin County4
- Montour County4
- Northumberland County4
- Snyder County4
- Sullivan County4
- Union County4
- Mercer County3
- Bradford County3
- Lackawanna County3
- McKean County3
- Potter County3
- Susquehanna County3
- Tioga County3
- Warren County3
- Wyoming County3
- Bedford County3
- Fulton County3
- Somerset County3
- Crawford County2
- Erie County2
- Pike County2
- Wayne County2
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.