Alert archive / Pennsylvania / Severe Thunderstorm Warnings / 2004
Severe Thunderstorm Warnings in Pennsylvania, August 2004
123 severe thunderstorm warnings 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 warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count in August 2004. Tap one for its archive.
- Severe Thunderstorm Warnings
- 123
- Busiest day
- August 20, 200434 severe thunderstorm warnings
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 2, 8:39 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 66 min |
| Aug 4, 1:14 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Lawrence | 61 min |
| Aug 4, 1:27 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 63 min |
| Aug 4, 2:00 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Washington | 60 min |
| Aug 4, 2:11 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 49 min |
| Aug 4, 2:17 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 58 min |
| Aug 4, 2:19 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 56 min |
| Aug 4, 2:22 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana, Jefferson | 68 min |
| Aug 4, 2:30 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 75 min |
| Aug 4, 2:38 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 67 min |
| Aug 4, 2:53 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 67 min |
| Aug 4, 3:22 PM EDT | Severe Thunderstorm Warning | CTP | Cambria, Somerset | 53 min |
| Aug 4, 3:57 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 63 min |
| Aug 4, 4:09 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Blair, Cambria, Somerset | 66 min |
| Aug 4, 4:20 PM EDT | Severe Thunderstorm Warning | CTP | Juniata, Perry | 55 min |
| Aug 4, 4:24 PM EDT | Severe Thunderstorm Warning | CTP | Mifflin | 36 min |
| Aug 4, 4:41 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 64 min |
| Aug 4, 4:45 PM EDT | Severe Thunderstorm Warning | CTP | Snyder, Union | 60 min |
| Aug 4, 4:54 PM EDT | Severe Thunderstorm Warning | CTP | Fulton | 36 min |
| Aug 4, 5:14 PM EDT | Severe Thunderstorm Warning | CTP | Juniata, Perry | 61 min |
| Aug 4, 5:19 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 71 min |
| Aug 4, 5:25 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Northumberland | 65 min |
| Aug 4, 5:43 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland | 62 min |
| Aug 4, 6:06 PM EDT | Severe Thunderstorm Warning | CTP | York | 54 min |
| Aug 4, 6:17 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, Lebanon | 73 min |
| Aug 4, 7:02 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester | 73 min |
| Aug 4, 7:49 PM EDT | Severe Thunderstorm Warning | PHI | Delaware, Montgomery, Philadelphia | 56 min |
| Aug 10, 2:09 PM EDT | Severe Thunderstorm Warning | PBZ | Venango | 51 min |
| Aug 10, 2:43 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 62 min |
| Aug 10, 3:15 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 60 min |
| Aug 10, 3:44 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 61 min |
| Aug 10, 3:55 PM EDT | Severe Thunderstorm Warning | CTP | McKean | 65 min |
| Aug 10, 4:58 PM EDT | Severe Thunderstorm Warning | CTP | Snyder | 47 min |
| Aug 10, 5:09 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 51 min |
| Aug 10, 5:13 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 47 min |
| Aug 10, 5:18 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 57 min |
| Aug 10, 5:27 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 63 min |
| Aug 10, 5:33 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 57 min |
| Aug 10, 5:50 PM EDT | Severe Thunderstorm Warning | CTP | Potter | 40 min |
| Aug 10, 5:56 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 64 min |
| Aug 10, 6:16 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 59 min |
| Aug 10, 6:17 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 58 min |
| Aug 10, 6:58 PM EDT | Severe Thunderstorm Warning | CTP | Tioga | 62 min |
| Aug 10, 7:44 PM EDT | Severe Thunderstorm Warning | CTP | Perry | 31 min |
| Aug 10, 8:05 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin | 40 min |
| Aug 10, 8:43 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin | 32 min |
| Aug 10, 8:51 PM EDT | Severe Thunderstorm Warning | CTP | McKean | 54 min |
| Aug 11, 2:21 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 54 min |
| Aug 11, 2:28 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 62 min |
| Aug 11, 2:40 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 95 min |
| Aug 11, 4:04 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 41 min |
| Aug 11, 4:29 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 61 min |
| Aug 11, 5:25 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 65 min |
| Aug 11, 5:28 PM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 32 min |
| Aug 11, 5:37 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 53 min |
| Aug 11, 5:56 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery | 34 min |
| Aug 12, 1:40 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 65 min |
| Aug 12, 2:45 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 30 min |
| Aug 12, 6:57 PM EDT | Severe Thunderstorm Warning | PHI | Monroe, Northampton | 63 min |
| Aug 16, 4:01 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 14 min |
| Aug 16, 4:40 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna | 50 min |
| Aug 19, 1:25 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 50 min |
| Aug 19, 2:06 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 39 min |
| Aug 19, 2:46 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 59 min |
| Aug 19, 2:48 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 42 min |
| Aug 19, 2:49 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 56 min |
| Aug 19, 3:30 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 60 min |
| Aug 19, 4:00 PM EDT | Severe Thunderstorm Warning | CTP | Somerset | 60 min |
| Aug 19, 4:25 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 65 min |
| Aug 19, 4:50 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 55 min |
| Aug 19, 4:58 PM EDT | Severe Thunderstorm Warning | CTP | York | 62 min |
| Aug 19, 4:58 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 62 min |
| Aug 19, 5:46 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 59 min |
| Aug 19, 6:00 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 60 min |
| Aug 19, 6:05 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 55 min |
| Aug 19, 6:38 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 52 min |
| Aug 19, 6:38 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 67 min |
| Aug 19, 6:42 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 63 min |
| Aug 19, 6:45 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 30 min |
| Aug 20, 1:42 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 48 min |
| Aug 20, 2:29 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 61 min |
| Aug 20, 2:42 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 48 min |
| Aug 20, 3:11 PM EDT | Severe Thunderstorm Warning | CTP | Union | 64 min |
| Aug 20, 3:25 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 50 min |
| Aug 20, 3:30 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 60 min |
| Aug 20, 3:36 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 54 min |
| Aug 20, 3:46 PM EDT | Severe Thunderstorm Warning | CTP | Columbia | 59 min |
| Aug 20, 3:48 PM EDT | Severe Thunderstorm Warning | CTP | Montour, Northumberland | 42 min |
| Aug 20, 3:55 PM EDT | Severe Thunderstorm Warning | CTP | Sullivan | 50 min |
| Aug 20, 4:01 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 89 min |
| Aug 20, 4:16 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna | 59 min |
| Aug 20, 4:27 PM EDT | Severe Thunderstorm Warning | BGM | Wyoming | 63 min |
| Aug 20, 4:35 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 55 min |
| Aug 20, 5:01 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 59 min |
| Aug 20, 5:04 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 56 min |
| Aug 20, 5:09 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 66 min |
| Aug 20, 5:19 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 56 min |
| Aug 20, 5:21 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 54 min |
| Aug 20, 5:23 PM EDT | Severe Thunderstorm Warning | CTP | Fulton | 22 min |
| Aug 20, 5:25 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 65 min |
| Aug 20, 5:33 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 57 min |
| Aug 20, 5:39 PM EDT | Severe Thunderstorm Warning | PBZ | Venango | 66 min |
| Aug 20, 5:58 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 62 min |
| Aug 20, 6:02 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 58 min |
| Aug 20, 6:02 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh | 43 min |
| Aug 20, 6:06 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 54 min |
| Aug 20, 6:25 PM EDT | Severe Thunderstorm Warning | PHI | Northampton | 50 min |
| Aug 20, 6:27 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 63 min |
| Aug 20, 6:34 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 56 min |
| Aug 20, 6:36 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland | 69 min |
| Aug 20, 6:44 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 61 min |
| Aug 20, 6:49 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield, Elk | 56 min |
| Aug 20, 7:30 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 60 min |
| Aug 21, 12:55 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Montgomery | 50 min |
| Aug 21, 1:15 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 30 min |
| Aug 27, 5:55 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 65 min |
| Aug 27, 9:14 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 61 min |
| Aug 28, 1:25 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 35 min |
| Aug 29, 2:46 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 44 min |
| Aug 29, 3:46 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 59 min |
| Aug 29, 4:29 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 61 min |
| Aug 29, 8:36 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 54 min |
| Aug 29, 9:15 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 60 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Westmoreland County10
- Allegheny County6
- Centre County6
- Lancaster County5
- Beaver County5
- Indiana County5
- Cambria County5
- Butler County4
- Washington County4
- Armstrong County4
- Fayette County4
- Bucks County4
- Clearfield County3
- Somerset County3
- Perry County3
- Franklin County3
- Dauphin County3
- York County3
- Chester County3
- Montgomery County3
- Schuylkill County3
- Clarion County2
- Greene County2
- Jefferson County2
- Juniata County2
- Snyder County2
- Union County2
- Fulton County2
- Northumberland County2
- Cumberland County2
- Berks County2
- Philadelphia County2
- Venango County2
- McKean County2
- Northampton County2
- Lackawanna County2
- Adams County2
- Lycoming County2
- Lawrence County1
- Bedford 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.