Alert archive / Pennsylvania / Severe Thunderstorm Watches
Severe Thunderstorm Watches in Pennsylvania, 2026
54 severe thunderstorm watches in 2026. 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 2026. Tap one for its archive.
- Severe Thunderstorm Watches
- 54
- Busiest month
- June14 severe thunderstorm watches
- Busiest day
- June 6, 20265 severe thunderstorm watches
Over time
By month
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 |
|---|---|---|---|---|
| Mar 11, 7:03 PM EDT | Severe Thunderstorm Watch | SPC | Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 1 more | 3 hr |
| Mar 22, 3:44 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Bedford, Blair, Butler and 23 more | 8 hr |
| Mar 31, 2:16 PM EDT | Severe Thunderstorm Watch | SPC | Bradford, McKean, Potter, Susquehanna, Tioga, Warren | 7 hr |
| Mar 31, 2:59 PM EDT | Severe Thunderstorm Watch | SPC | Crawford, Erie | 8 hr |
| Mar 31, 6:26 PM EDT | Severe Thunderstorm Watch | SPC | Armstrong, Beaver, Butler, Cambria, Cameron, Centre and 17 more | 6 hr |
| Apr 1, 2:43 PM EDT | Severe Thunderstorm Watch | SPC | Fayette, Greene, Washington | 5 hr |
| Apr 4, 2:48 PM EDT | Severe Thunderstorm Watch | SPC | Crawford, Erie | 6 hr |
| Apr 14, 2:51 PM EDT | Severe Thunderstorm Watch | SPC | Bradford, Susquehanna, Wayne | 7 hr |
| Apr 15, 2:56 PM EDT | Severe Thunderstorm Watch | SPC | Clarion, Crawford, Erie, Forest, Jefferson, Lawrence and 2 more | 6 hr |
| May 9, 5:41 PM EDT | Severe Thunderstorm Watch | SPC | Crawford, Erie, Warren | 4 hr |
| May 20, 12:39 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Columbia, Cumberland, Dauphin, Franklin and 12 more | 7 hr |
| May 20, 2:10 PM EDT | Severe Thunderstorm Watch | SPC | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 7 hr |
| Jun 6, 11:54 AM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 10 more | 6 hr |
| Jun 6, 1:42 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Blair, Cambria, Cameron, Centre and 27 more | 6 hr |
| Jun 6, 4:06 PM EDT | Severe Thunderstorm Watch | SPC | Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more | 3 hr |
| Jun 6, 4:45 PM EDT | Severe Thunderstorm Watch | SPC | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 5 hr |
| Jun 6, 6:00 PM EDT | Severe Thunderstorm Watch | SPC | Fayette, Greene, Washington | 4 hr |
| Jun 11, 1:20 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Cambria, Cameron and 19 more | 6 hr |
| Jun 11, 4:12 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Blair, Bradford, Centre, Clinton and 25 more | 6 hr |
| Jun 11, 7:14 PM EDT | Severe Thunderstorm Watch | SPC | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 5 more | 5 hr |
| Jun 12, 3:04 PM EDT | Severe Thunderstorm Watch | SPC | Bucks, Carbon, Lackawanna, Lehigh, Luzerne, Monroe and 5 more | 5 hr |
| Jun 14, 1:25 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 11 more | 8 hr |
| Jun 14, 2:44 PM EDT | Severe Thunderstorm Watch | SPC | Cameron, Clearfield, Elk, McKean, Potter, Tioga and 1 more | 5 hr |
| Jun 14, 7:06 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bradford, Bucks, Carbon, Chester and 25 more | 6 hr |
| Jun 22, 2:08 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Berks, Blair, Bucks, Cambria and 16 more | 8 hr |
| Jun 25, 5:56 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Bedford, Blair, Butler and 25 more | 4 hr |
| Jul 3, 3:25 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Blair, Bradford, Bucks, Cameron and 42 more | 7 hr |
| Jul 4, 1:59 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 10 more | 6 hr |
| Jul 4, 3:28 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Berks, Blair, Bradford, Bucks and 44 more | 7 hr |
| Jul 5, 6:44 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Berks, Blair, Bucks, Chester and 16 more | 6 hr |
| Jul 18, 1:02 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Allegheny, Armstrong, Beaver, Bedford, Blair and 44 more | 8 hr |
| Jul 18, 1:35 PM EDT | Severe Thunderstorm Watch | SPC | Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more | 6 hr |
| Jul 21, 1:13 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Beaver, Fayette, Greene, Washington, Westmoreland | 10 hr |
| Jul 28, 12:51 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bucks, Carbon, Chester, Columbia and 22 more | 8 hr |
| Aug 7, 1:22 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bucks, Carbon, Chester, Cumberland and 14 more | 7 hr |
| Aug 8, 1:12 PM EDT | Severe Thunderstorm Watch | SPC | Chester, Delaware, Montgomery, Philadelphia | 5 hr |
| Aug 8, 1:45 PM EDT | Severe Thunderstorm Watch | SPC | Pike, Wayne | 6 hr |
| Aug 10, 9:29 AM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Bedford, Blair, Butler and 29 more | 6 hr |
| Aug 10, 12:24 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bradford, Columbia, Cumberland, Dauphin, Franklin and 16 more | 6 hr |
| Aug 10, 2:10 PM EDT | Severe Thunderstorm Watch | SPC | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 6 hr |
| Aug 16, 1:05 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 9 more | 9 hr |
| Aug 16, 4:36 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Blair, Cambria, Centre, Clearfield and 8 more | 6 hr |
| Aug 20, 2:31 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bucks, Chester, Delaware, Lancaster and 6 more | 7 hr |
| Aug 22, 1:22 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 14 more | 8 hr |
| Aug 27, 12:51 PM EDT | Severe Thunderstorm Watch | SPC | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 9 hr |
| Aug 27, 1:53 PM EDT | Severe Thunderstorm Watch | SPC | Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more | 7 hr |
| Aug 27, 3:17 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Centre, Clinton, Columbia, Cumberland, Dauphin and 16 more | 7 hr |
| Sep 1, 4:32 PM EDT | Severe Thunderstorm Watch | SPC | Berks, Bradford, Bucks, Cameron, Carbon, Centre and 36 more | 7 hr |
| Sep 2, 9:23 AM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Blair, Cambria, Centre, Clearfield and 13 more | 4 hr |
| Sep 2, 4:56 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Bedford, Blair, Butler and 26 more | 9 hr |
| Sep 3, 3:03 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 11 more | 9 hr |
| Sep 3, 4:33 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Blair, Cambria, Cameron, Centre and 27 more | 6 hr |
| Sep 3, 8:38 PM EDT | Severe Thunderstorm Watch | SPC | Chester | 5 hr |
| Sep 9, 2:51 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Cameron, Clarion and 15 more | 8 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Cumberland County18
- Perry County18
- Chester County17
- Dauphin County17
- Huntingdon County17
- Juniata County17
- Mifflin County17
- Adams County17
- York County17
- Bucks County16
- Delaware County16
- Montgomery County16
- Philadelphia County16
- Clearfield County16
- Franklin County16
- Fulton County16
- Lancaster County16
- Lebanon County16
- Berks County15
- Lehigh County15
- Beaver County15
- Centre County15
- Lawrence County15
- Washington County15
- McKean County15
- Warren County15
- Crawford County15
- Clarion County15
- Forest County15
- Jefferson County15
- Venango County15
- Allegheny County14
- Armstrong County14
- Bedford County14
- Blair County14
- Butler County14
- Clinton County14
- Fayette County14
- Greene County14
- Indiana County14
27 more counties
- Westmoreland County14
- Potter County14
- Elk County14
- Mercer County14
- Schuylkill County14
- Cambria County13
- Northumberland County13
- Snyder County13
- Somerset County13
- Union County13
- Erie County13
- Cameron County13
- Northampton County13
- Montour County12
- Susquehanna County12
- Tioga County12
- Sullivan County12
- Wayne County12
- Columbia County12
- Carbon County12
- Monroe County12
- Pike County12
- Bradford County11
- Lycoming County11
- Lackawanna County10
- Luzerne County10
- Wyoming County10
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
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.