Alert archive / Pennsylvania / Severe Thunderstorm Warnings / 2009
Severe Thunderstorm Warnings in Pennsylvania, July 2009
91 severe thunderstorm warnings in July 2009. 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 July 2009. Tap one for its archive.
- Severe Thunderstorm Warnings
- 91
- Busiest day
- July 29, 200917 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 |
|---|---|---|---|---|
| Jul 1, 1:16 PM EDT | Severe Thunderstorm Warning | BGM | Pike | 59 min |
| Jul 1, 7:05 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 55 min |
| Jul 2, 7:47 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne, Wyoming | 43 min |
| Jul 7, 12:09 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 66 min |
| Jul 7, 1:56 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne, Wyoming | 64 min |
| Jul 7, 2:26 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna, Wayne | 40 min |
| Jul 7, 2:29 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Lehigh, Northampton | 61 min |
| Jul 7, 2:39 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Wayne | 21 min |
| Jul 7, 6:35 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna, Wayne | 25 min |
| Jul 7, 7:06 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Susquehanna, Wayne | 39 min |
| Jul 11, 3:01 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Franklin | 59 min |
| Jul 11, 3:25 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 65 min |
| Jul 11, 4:58 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming, Northumberland, Union | 62 min |
| Jul 11, 5:10 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 16 min |
| Jul 11, 5:26 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 34 min |
| Jul 11, 5:42 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Montour, Northumberland | 63 min |
| Jul 11, 5:44 PM EDT | Severe Thunderstorm Warning | PBZ | Forest, Venango | 61 min |
| Jul 11, 5:46 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 59 min |
| Jul 11, 5:57 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Elk | 63 min |
| Jul 11, 6:07 PM EDT | Severe Thunderstorm Warning | CTP | Blair, Cambria, Centre, Clearfield | 42 min |
| Jul 11, 6:33 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Schuylkill | 87 min |
| Jul 11, 6:42 PM EDT | Severe Thunderstorm Warning | CTP | Blair, Centre, Clearfield, Huntingdon, Mifflin | 63 min |
| Jul 11, 6:43 PM EDT | Severe Thunderstorm Warning | CTP | Elk | 62 min |
| Jul 11, 7:05 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Dauphin, Perry | 40 min |
| Jul 11, 7:19 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Clinton, Huntingdon, Lycoming, Mifflin, Montour and 3 more | 71 min |
| Jul 11, 8:10 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 49 min |
| Jul 11, 8:28 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Montour, Northumberland, Snyder, Union | 62 min |
| Jul 11, 9:06 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Lancaster, Lebanon, Perry | 54 min |
| Jul 11, 9:55 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 48 min |
| Jul 11, 11:27 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Clinton, Elk, Potter | 48 min |
| Jul 16, 3:53 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 31 min |
| Jul 16, 5:22 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 53 min |
| Jul 16, 5:54 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Susquehanna, Wyoming | 30 min |
| Jul 16, 6:42 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery, Philadelphia | 63 min |
| Jul 16, 7:05 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery, Philadelphia | 70 min |
| Jul 17, 5:41 PM EDT | Severe Thunderstorm Warning | PHI | Northampton | 52 min |
| Jul 17, 6:10 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 80 min |
| Jul 17, 7:01 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Indiana, Jefferson | 44 min |
| Jul 17, 7:07 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Lehigh, Montgomery | 53 min |
| Jul 17, 7:22 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 53 min |
| Jul 21, 1:44 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 61 min |
| Jul 21, 2:16 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Washington | 59 min |
| Jul 21, 2:55 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Lawrence | 65 min |
| Jul 21, 2:59 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 61 min |
| Jul 21, 3:16 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Butler | 59 min |
| Jul 21, 4:27 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Beaver, Butler | 63 min |
| Jul 21, 4:34 PM EDT | Severe Thunderstorm Warning | PBZ | Butler, Lawrence, Mercer | 56 min |
| Jul 21, 5:31 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 44 min |
| Jul 21, 7:16 PM EDT | Severe Thunderstorm Warning | PBZ | Venango | 29 min |
| Jul 21, 9:47 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon, Juniata, Mifflin | 58 min |
| Jul 23, 6:21 PM EDT | Severe Thunderstorm Warning | CTP | Clinton, Lycoming | 54 min |
| Jul 23, 6:51 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 39 min |
| Jul 23, 7:25 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Dauphin, Lancaster, Lebanon, York | 65 min |
| Jul 23, 8:02 PM EDT | Severe Thunderstorm Warning | CTP | Juniata, Northumberland, Snyder | 43 min |
| Jul 24, 4:16 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Lancaster, Lebanon | 59 min |
| Jul 24, 4:20 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Franklin, York | 55 min |
| Jul 24, 5:55 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 50 min |
| Jul 24, 6:28 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 62 min |
| Jul 24, 6:44 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Lycoming, Montour, Northumberland, Sullivan, Union | 61 min |
| Jul 24, 7:11 PM EDT | Severe Thunderstorm Warning | PHI | Delaware, Philadelphia | 46 min |
| Jul 24, 7:45 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Montour, Northumberland, Schuylkill | 47 min |
| Jul 25, 3:33 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Clinton, McKean, Potter, Tioga | 42 min |
| Jul 25, 5:14 PM EDT | Severe Thunderstorm Warning | CTP | Juniata, Northumberland, Snyder, Union | 40 min |
| Jul 25, 7:51 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 75 min |
| Jul 26, 4:06 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Lehigh, Northampton | 54 min |
| Jul 26, 6:21 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna, Wayne | 39 min |
| Jul 26, 7:05 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 70 min |
| Jul 26, 8:16 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 59 min |
| Jul 26, 8:26 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Carbon, Lehigh, Northampton | 37 min |
| Jul 27, 9:05 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Montgomery | 55 min |
| Jul 29, 11:48 AM EDT | Severe Thunderstorm Warning | PHI | Bucks, Chester, Montgomery | 72 min |
| Jul 29, 12:12 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Lehigh, Monroe, Northampton | 78 min |
| Jul 29, 12:21 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne, Wyoming | 39 min |
| Jul 29, 12:55 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Susquehanna, Wyoming | 50 min |
| Jul 29, 1:38 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 22 min |
| Jul 29, 1:49 PM EDT | Severe Thunderstorm Warning | BGM | Pike, Wayne | 41 min |
| Jul 29, 1:56 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 64 min |
| Jul 29, 1:57 PM EDT | Severe Thunderstorm Warning | BGM | Pike | 48 min |
| Jul 29, 2:04 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 56 min |
| Jul 29, 2:30 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Northumberland | 45 min |
| Jul 29, 3:03 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin | 27 min |
| Jul 29, 3:19 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne, Susquehanna, Wayne, Wyoming | 17 min |
| Jul 29, 4:52 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Cumberland, Franklin | 53 min |
| Jul 29, 5:09 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 66 min |
| Jul 29, 5:28 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh, Northampton | 40 min |
| Jul 29, 5:46 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Cumberland, Franklin | 59 min |
| Jul 29, 7:23 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Lebanon, Schuylkill | 97 min |
| Jul 31, 3:36 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 54 min |
| Jul 31, 3:40 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 65 min |
| Jul 31, 4:03 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 57 min |
| Jul 31, 4:31 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Delaware, Montgomery, Philadelphia | 59 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Bucks County11
- Northumberland County9
- Chester County9
- Lackawanna County8
- Susquehanna County8
- Wayne County8
- Montgomery County7
- Wyoming County6
- Lehigh County6
- Northampton County6
- Columbia County6
- Dauphin County6
- Delaware County6
- Lycoming County5
- Union County5
- Montour County5
- Monroe County5
- Philadelphia County5
- Luzerne County4
- Adams County4
- Franklin County4
- Centre County4
- Cumberland County4
- Clinton County4
- Snyder County4
- Lebanon County4
- Carbon County4
- Berks County4
- Pike County3
- Erie County3
- Cameron County3
- Elk County3
- Schuylkill County3
- Huntingdon County3
- Mifflin County3
- Lancaster County3
- Beaver County3
- Allegheny County3
- Butler County3
- Juniata County3
21 more counties
- Bradford County2
- Crawford County2
- Venango County2
- Blair County2
- Clearfield County2
- Perry County2
- Potter County2
- Washington County2
- Lawrence County2
- York County2
- Forest County1
- Warren County1
- Cambria County1
- Armstrong County1
- Indiana County1
- Jefferson County1
- Mercer County1
- Fayette County1
- Sullivan County1
- McKean County1
- Tioga County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20082010
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.