Alert archive / Pennsylvania / Severe Thunderstorm Watches / 2004
Severe Thunderstorm Watches in Pennsylvania, May 2004
15 severe thunderstorm watches in May 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 May 2004. Tap one for its archive.
- Severe Thunderstorm Watches
- 15
- Busiest day
- May 24, 20044 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 |
|---|---|---|---|---|
| May 2, 3:20 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Blair, Bradford, Centre, Clinton and 17 more | 6 hr |
| May 6, 11:20 PM EDT | Severe Thunderstorm Watch | SPC | Armstrong, Beaver, Butler, Clarion, Clearfield, Crawford and 9 more | 5 hr |
| May 7, 11:00 AM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Blair, Cumberland, Dauphin, Fayette and 12 more | 6 hr |
| May 7, 1:40 PM EDT | Severe Thunderstorm Watch | SPC | Chester, Delaware, Montgomery, Philadelphia | 3 hr |
| May 18, 1:45 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 6 more | 6 hr |
| May 18, 1:50 PM EDT | Severe Thunderstorm Watch | SPC | Bradford, Cameron, Elk, Jefferson, McKean, Potter and 2 more | 8 hr |
| May 21, 3:15 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Blair, Butler, Cambria and 17 more | 6 hr |
| May 23, 4:40 PM EDT | Severe Thunderstorm Watch | SPC | Bradford, Carbon, Clinton, Columbia, Lackawanna, Luzerne and 10 more | 5 hr |
| May 24, 12:30 AM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 10 more | 6 hr |
| May 24, 11:00 AM EDT | Severe Thunderstorm Watch | SPC | Carbon, Columbia, Lackawanna, Lehigh, Luzerne, Monroe and 5 more | 5 hr |
| May 24, 12:40 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Blair, Bradford, Butler and 23 more | 4 hr |
| May 24, 4:55 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bradford, Bucks, Carbon, Chester and 28 more | 4 hr |
| May 25, 1:30 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 6 more | 7 hr |
| May 25, 3:20 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Berks, Blair, Cambria, Cumberland and 11 more | 6 hr |
| May 27, 5:45 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Fayette, Greene, Washington | 5 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Armstrong County6
- Beaver County6
- Butler County6
- Clarion County6
- Washington County6
- Westmoreland County6
- Allegheny County6
- Blair County5
- Bradford County5
- Juniata County5
- Lawrence County5
- Mercer County5
- Venango County5
- Fayette County5
- Greene County5
- Adams County4
- Columbia County4
- Cumberland County4
- Dauphin County4
- Franklin County4
- Huntingdon County4
- Lycoming County4
- Montour County4
- Perry County4
- Potter County4
- Sullivan County4
- Tioga County4
- Elk County4
- Forest County4
- Jefferson County4
- McKean County4
- Warren County4
- Bedford County3
- Centre County3
- Clinton County3
- Fulton County3
- Mifflin County3
- Northumberland County3
- Snyder County3
- Union County3
27 more counties
- Clearfield County3
- Crawford County3
- Lancaster County3
- Lebanon County3
- York County3
- Cameron County3
- Susquehanna County3
- Cambria County3
- Indiana County3
- Carbon County3
- Lackawanna County3
- Luzerne County3
- Monroe County3
- Northampton County3
- Pike County3
- Wayne County3
- Somerset County2
- Chester County2
- Delaware County2
- Montgomery County2
- Philadelphia County2
- Wyoming County2
- Lehigh County2
- Schuylkill County2
- Berks County2
- Erie County1
- Bucks 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.