Alert archive / Pennsylvania / Severe Thunderstorm Watches / 2017
Severe Thunderstorm Watches in Pennsylvania, August 2017
6 severe thunderstorm watches in August 2017. 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 2017. Tap one for its archive.
- Severe Thunderstorm Watches
- 6
- Busiest day
- August 22, 20172 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 4, 1:25 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Allegheny, Armstrong, Beaver, Bedford, Blair and 45 more | 8 hr |
| Aug 12, 2:44 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bradford, Bucks, Carbon, Chester and 28 more | 5 hr |
| Aug 18, 2:27 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bucks, Carbon, Chester, Columbia and 21 more | 9 hr |
| Aug 19, 2:45 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Allegheny, Armstrong, Beaver, Bedford, Blair and 36 more | 6 hr |
| Aug 22, 12:39 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Bedford, Blair, Butler and 16 more | 8 hr |
| Aug 22, 4:19 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bucks, Carbon, Chester, Columbia and 26 more | 8 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Adams County5
- Columbia County5
- Cumberland County5
- Dauphin County5
- Franklin County5
- Lebanon County5
- Montour County5
- Northumberland County5
- Perry County5
- York County5
- Juniata County4
- Lancaster County4
- Schuylkill County4
- Snyder County4
- Union County4
- Allegheny County3
- Armstrong County3
- Beaver County3
- Bedford County3
- Blair County3
- Butler County3
- Cambria County3
- Centre County3
- Clarion County3
- Clearfield County3
- Fayette County3
- Forest County3
- Fulton County3
- Greene County3
- Huntingdon County3
- Indiana County3
- Jefferson County3
- Lawrence County3
- Lycoming County3
- Mercer County3
- Mifflin County3
- Somerset County3
- Sullivan County3
- Venango County3
- Washington County3
27 more counties
- Westmoreland County3
- Berks County3
- Bucks County3
- Carbon County3
- Chester County3
- Delaware County3
- Lackawanna County3
- Lehigh County3
- Luzerne County3
- Monroe County3
- Montgomery County3
- Northampton County3
- Philadelphia County3
- Pike County3
- Wayne County3
- Wyoming County3
- Bradford County2
- Cameron County2
- Clinton County2
- Elk County2
- Crawford County1
- Erie County1
- McKean County1
- Potter County1
- Tioga County1
- Warren County1
- Susquehanna County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20162018
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.