Alert archive / Pennsylvania / Severe Thunderstorm Watches / 2021
Severe Thunderstorm Watches in Pennsylvania, July 2021
15 severe thunderstorm watches in July 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 July 2021. Tap one for its archive.
- Severe Thunderstorm Watches
- 15
- Busiest day
- July 7, 20213 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 |
|---|---|---|---|---|
| Jul 1, 12:46 PM EDT | Severe Thunderstorm Watch | SPC | Bucks, Chester, Delaware, Montgomery, Philadelphia | 7 hr |
| Jul 6, 1:13 PM EDT | Severe Thunderstorm Watch | SPC | Bradford, Columbia, Lackawanna, Luzerne, Lycoming, Montour and 8 more | 7 hr |
| Jul 6, 1:32 PM EDT | Severe Thunderstorm Watch | SPC | Berks, Bucks, Carbon, Chester, Dauphin, Delaware and 9 more | 8 hr |
| Jul 7, 1:31 PM EDT | Severe Thunderstorm Watch | SPC | Crawford, Erie | 7 hr |
| Jul 7, 2:41 PM EDT | Severe Thunderstorm Watch | SPC | Berks, Bradford, Bucks, Carbon, Columbia, Lackawanna and 15 more | 10 hr |
| Jul 7, 3:31 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Blair, Butler, Cambria and 20 more | 7 hr |
| Jul 8, 2:09 PM EDT | Severe Thunderstorm Watch | SPC | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 7 hr |
| Jul 11, 2:40 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Allegheny, Armstrong, Beaver, Bedford, Blair and 39 more | 8 hr |
| Jul 12, 3:34 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bucks, Carbon, Chester, Cumberland and 13 more | 5 hr |
| Jul 13, 1:37 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Armstrong, Bedford, Berks, Blair, Bradford and 45 more | 10 hr |
| Jul 17, 1:13 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Berks, Blair, Bradford, Bucks and 41 more | 10 hr |
| Jul 21, 11:56 AM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bucks, Chester, Cumberland, Dauphin and 10 more | 7 hr |
| Jul 27, 11:12 AM EDT | Severe Thunderstorm Watch | SPC | Bradford, Susquehanna | 7 hr |
| Jul 27, 2:47 PM EDT | Severe Thunderstorm Watch | SPC | Pike, Wayne | 6 hr |
| Jul 29, 3:13 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Cambria, Clearfield and 6 more | 7 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Bucks County7
- Montgomery County7
- Berks County7
- Lehigh County7
- Northampton County7
- Schuylkill County7
- Chester County6
- Delaware County6
- Philadelphia County6
- Carbon County6
- Dauphin County6
- Lancaster County6
- Lebanon County6
- Monroe County6
- York County6
- Bradford County5
- Columbia County5
- Lycoming County5
- Montour County5
- Northumberland County5
- Potter County5
- Sullivan County5
- Susquehanna County5
- Wayne County5
- Cambria County5
- Clearfield County5
- Adams County5
- Cumberland County5
- Lackawanna County4
- Luzerne County4
- Pike County4
- Tioga County4
- Wyoming County4
- Armstrong County4
- Blair County4
- Cameron County4
- Centre County4
- Clinton County4
- Huntingdon County4
- Indiana County4
27 more counties
- Mifflin County4
- Snyder County4
- Union County4
- Westmoreland County4
- Franklin County4
- Juniata County4
- Perry County4
- Somerset County4
- Allegheny County3
- Beaver County3
- Butler County3
- Clarion County3
- Elk County3
- Forest County3
- Jefferson County3
- McKean County3
- Bedford County3
- Fayette County3
- Fulton County3
- Lawrence County2
- Venango County2
- Warren County2
- Greene County2
- Washington County2
- Crawford County1
- Erie County1
- Mercer 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.