Alert archive / Pennsylvania / Severe Thunderstorm Watches / 2004
Severe Thunderstorm Watches in Pennsylvania, August 2004
11 severe thunderstorm watches in August 2004. 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 2004. Tap one for its archive.
- Severe Thunderstorm Watches
- 11
- Busiest day
- August 4, 20043 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, 11:55 AM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 8 more | 5 hr |
| Aug 4, 2:55 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Blair, Cambria, Carbon, Centre and 20 more | 6 hr |
| Aug 4, 7:10 PM EDT | Severe Thunderstorm Watch | SPC | Chester, Delaware, Lancaster, Montgomery, Philadelphia | 4 hr |
| Aug 10, 1:10 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Bradford, Butler, Cameron and 23 more | 7 hr |
| Aug 11, 12:55 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bradford, Bucks, Carbon, Chester and 25 more | 7 hr |
| Aug 19, 2:30 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Beaver, Bedford, Blair, Cambria, Fayette and 10 more | 6 hr |
| Aug 19, 6:10 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Chester, Delaware, Lancaster, York | 4 hr |
| Aug 20, 2:05 PM EDT | Severe Thunderstorm Watch | SPC | Blair, Bradford, Cambria, Cameron, Carbon, Centre and 27 more | 5 hr |
| Aug 20, 4:25 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Cambria, Clearfield and 7 more | 5 hr |
| Aug 20, 6:10 PM EDT | Severe Thunderstorm Watch | SPC | Bradford, Cameron, Carbon, Centre, Clinton, Columbia and 21 more | 5 hr |
| Aug 21, 1:25 PM EDT | Severe Thunderstorm Watch | SPC | Bucks, Delaware, Philadelphia | 5 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Allegheny County4
- Beaver County4
- Fayette County4
- Indiana County4
- Washington County4
- Westmoreland County4
- Cambria County4
- Carbon County4
- Centre County4
- Clearfield County4
- Columbia County4
- Huntingdon County4
- Juniata County4
- Luzerne County4
- Mifflin County4
- Montour County4
- Northumberland County4
- Perry County4
- Schuylkill County4
- Snyder County4
- Union County4
- Delaware County4
- Bradford County4
- Sullivan County4
- Susquehanna County4
- Wyoming County4
- Armstrong County3
- Butler County3
- Greene County3
- Lawrence County3
- Adams County3
- Blair County3
- Dauphin County3
- Somerset County3
- York County3
- Chester County3
- Lancaster County3
- Philadelphia County3
- Cameron County3
- Clinton County3
27 more counties
- Lycoming County3
- Potter County3
- Tioga County3
- Lackawanna County3
- Monroe County3
- Northampton County3
- Pike County3
- Wayne County3
- Clarion County2
- Jefferson County2
- Mercer County2
- Venango County2
- Bedford County2
- Cumberland County2
- Franklin County2
- Fulton County2
- Lebanon County2
- Montgomery County2
- Elk County2
- Bucks County2
- Lehigh County2
- Crawford County1
- Erie County1
- Forest County1
- McKean County1
- Warren County1
- Berks County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20032005
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.