Tornado Watches in Pennsylvania
162 tornado watches since 1986. 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 tornado watches reaches back to 1997.
Tornado Watches by county
Each county as a circle sized by its count since 1986. Tap one for its archive.
- Tornado Watches
- 162
- Busiest year
- 201112 tornado watches
- Average year
- 5over 30 years on file
Over time
By year
Watches are counted from 1997, when the Storm Prediction Center archive begins.
By month of the year
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Lancaster County57
- Chester County56
- York County54
- Philadelphia County53
- Delaware County52
- Montgomery County51
- Adams County51
- Bucks County49
- Dauphin County47
- Lebanon County47
- Cumberland County46
- Fayette County46
- Berks County45
- Greene County45
- Beaver County44
- Franklin County44
- Schuylkill County44
- Washington County44
- Westmoreland County43
- Lehigh County42
- Allegheny County42
- Perry County42
- Snyder County42
- Juniata County41
- Northumberland County41
- Armstrong County40
- Butler County40
- Huntingdon County40
- Montour County40
- Union County40
- Monroe County39
- Columbia County39
- Mifflin County39
- Northampton County38
- Wayne County38
- Centre County38
- Clinton County38
- Fulton County38
- Lawrence County38
- Lackawanna County37
27 more counties
- Bedford County37
- Lycoming County37
- Carbon County36
- Susquehanna County36
- Clarion County36
- Luzerne County36
- Sullivan County36
- Pike County35
- Blair County35
- Cameron County35
- Jefferson County35
- Somerset County35
- Elk County34
- Forest County34
- Venango County34
- Cambria County33
- Clearfield County33
- Indiana County33
- Mercer County33
- Bradford County32
- McKean County31
- Warren County31
- Wyoming County31
- Crawford County30
- Potter County30
- Tioga County29
- Erie County26
The latest tornado watches
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 2, 4:41 PM EDT | Tornado Watch | SPC | Bradford | 6 hr |
| Aug 20, 2:58 PM EDT | Tornado Watch | SPC | Bucks, Chester, Delaware, Montgomery, Philadelphia | 7 hr |
| Jul 28, 4:20 PM EDT | Tornado Watch | SPC | Bucks, Chester, Delaware, Montgomery, Philadelphia | 5 hr |
| Jul 21, 2:06 PM EDT | Tornado Watch | SPC | Berks, Bucks, Carbon, Chester, Delaware, Lackawanna and 13 more | 7 hr |
| Jul 18, 1:55 PM EDT | Tornado Watch | SPC | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 6 hr |
| Jun 14, 5:41 PM EDT | Tornado Watch | SPC | Allegheny, Armstrong, Bedford, Blair, Butler, Cambria and 21 more | 4 hr |
| Mar 26, 4:52 PM EDT | Tornado Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 8 more | 6 hr |
| Mar 16, 11:30 AM EDT | Tornado Watch | SPC | Adams, Berks, Bucks, Carbon, Chester, Columbia and 20 more | 6 hr |
| Mar 11, 1:45 PM EDT | Tornado Watch | SPC | Adams, Allegheny, Bedford, Blair, Cambria, Centre and 24 more | 6 hr |
| Mar 7, 1:23 PM EST | Tornado Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Cambria, Cameron and 19 more | 5 hr |
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. Rebuilt daily.