Alert archive / Pennsylvania / Severe Thunderstorm Watches
Severe Thunderstorm Watches in Pennsylvania, 2004
46 severe thunderstorm watches in 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 2004. Tap one for its archive.
- Severe Thunderstorm Watches
- 46
- Busiest month
- June17 severe thunderstorm watches
- Busiest day
- May 24, 20044 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 |
|---|---|---|---|---|
| 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 |
| Jun 1, 12:25 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Berks, Blair, Bradford, Bucks and 37 more | 6 hr |
| Jun 1, 3:55 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Beaver, Washington | 7 hr |
| Jun 1, 5:15 PM EDT | Severe Thunderstorm Watch | SPC | Bedford, Blair, Cambria, Fayette, Fulton, Greene and 6 more | 5 hr |
| Jun 9, 1:00 PM EDT | Severe Thunderstorm Watch | SPC | Crawford, Erie, Forest, Lawrence, McKean, Mercer and 3 more | 5 hr |
| Jun 9, 4:45 PM EDT | Severe Thunderstorm Watch | SPC | Bradford, Susquehanna, Tioga | 5 hr |
| Jun 9, 5:50 PM EDT | Severe Thunderstorm Watch | SPC | Butler, Cameron, Clarion, Clinton, Crawford, Elk and 9 more | 4 hr |
| Jun 9, 7:55 PM EDT | Severe Thunderstorm Watch | SPC | Monroe, Northampton, Pike, Wayne | 5 hr |
| Jun 10, 2:55 PM EDT | Severe Thunderstorm Watch | SPC | Bucks, Chester, Delaware, Lancaster, Lebanon, Montgomery and 2 more | 5 hr |
| Jun 13, 7:00 PM EDT | Severe Thunderstorm Watch | SPC | Crawford, Erie | 5 hr |
| Jun 13, 11:45 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Beaver, Butler, Lawrence, Mercer, Venango and 1 more | 4 hr |
| Jun 14, 5:00 PM EDT | Severe Thunderstorm Watch | SPC | Armstrong, Beaver, Butler, Cameron, Clarion, Crawford and 11 more | 6 hr |
| Jun 14, 7:15 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Allegheny, Armstrong, Beaver, Bedford, Blair and 25 more | 4 hr |
| Jun 17, 1:45 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Bedford, Blair, Bradford and 40 more | 6 hr |
| Jun 17, 2:35 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bucks, Chester, Delaware, Lancaster and 7 more | 6 hr |
| Jun 22, 2:00 PM EDT | Severe Thunderstorm Watch | SPC | Delaware | 6 hr |
| Jun 24, 8:10 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Blair, Butler, Cambria and 26 more | 5 hr |
| Jun 25, 1:45 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bucks, Chester, Cumberland, Delaware, Franklin and 6 more | 7 hr |
| Jul 4, 12:50 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 10 more | 5 hr |
| Jul 7, 1:15 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Chester, Cumberland, Dauphin, Lancaster and 3 more | 5 hr |
| Jul 14, 1:15 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Berks, Blair, Carbon, Centre and 27 more | 6 hr |
| 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.
- Beaver County17
- Washington County16
- Allegheny County16
- Juniata County15
- Butler County15
- Lawrence County15
- Westmoreland County15
- Blair County14
- Huntingdon County14
- Perry County14
- Armstrong County14
- Venango County14
- Adams County13
- Mifflin County13
- Potter County13
- Clarion County13
- Mercer County13
- Fayette County13
- York County13
- Bradford County12
- Centre County12
- Clinton County12
- Columbia County12
- Montour County12
- Snyder County12
- Tioga County12
- Union County12
- Greene County12
- Lancaster County12
- Lebanon County12
- Cumberland County11
- Dauphin County11
- Franklin County11
- Fulton County11
- Lycoming County11
- Northumberland County11
- Sullivan County11
- Forest County11
- Jefferson County11
- Warren County11
27 more counties
- Chester County11
- Delaware County11
- Cambria County11
- Indiana County11
- Bedford County10
- Clearfield County10
- Crawford County10
- Elk County10
- McKean County10
- Cameron County10
- Susquehanna County10
- Luzerne County10
- Monroe County10
- Northampton County10
- Philadelphia County9
- Carbon County9
- Lackawanna County9
- Pike County9
- Wayne County9
- Somerset County8
- Montgomery County8
- Wyoming County8
- Schuylkill County8
- Lehigh County7
- Berks County7
- Bucks County7
- Erie County6
The busiest days
Days with the most alerts issued, by UTC date.
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.