Alert archive / Pennsylvania / Severe Thunderstorm Warnings / 2012
Severe Thunderstorm Warnings in Pennsylvania, September 2012
61 severe thunderstorm warnings in September 2012. 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 September 2012. Tap one for its archive.
- Severe Thunderstorm Warnings
- 61
- Busiest day
- September 18, 201216 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 |
|---|---|---|---|---|
| Sep 1, 7:14 PM EDT | Severe Thunderstorm Warning | CTP | Adams, York | 30 min |
| Sep 4, 6:10 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Philadelphia | 65 min |
| Sep 6, 3:44 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 38 min |
| Sep 6, 4:44 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 46 min |
| Sep 6, 4:52 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 53 min |
| Sep 6, 5:19 PM EDT | Severe Thunderstorm Warning | BGM | Bradford, Susquehanna | 56 min |
| Sep 6, 5:47 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Clinton, Snyder, Union | 58 min |
| Sep 6, 5:51 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 54 min |
| Sep 6, 5:54 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 66 min |
| Sep 6, 6:48 PM EDT | Severe Thunderstorm Warning | BGM | Bradford, Susquehanna | 20 min |
| Sep 6, 7:03 PM EDT | Severe Thunderstorm Warning | BGM | Bradford, Susquehanna, Wyoming | 57 min |
| Sep 6, 7:56 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne, Wyoming | 49 min |
| Sep 6, 8:40 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne, Wayne | 36 min |
| Sep 6, 9:39 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Lycoming, Sullivan | 66 min |
| Sep 6, 11:09 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Schuylkill | 66 min |
| Sep 6, 11:10 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 48 min |
| Sep 6, 11:12 PM EDT | Severe Thunderstorm Warning | PHI | Carbon | 65 min |
| Sep 7, 12:24 AM EDT | Severe Thunderstorm Warning | CTP | Northumberland, Snyder | 66 min |
| Sep 7, 3:39 AM EDT | Severe Thunderstorm Warning | PHI | Berks | 81 min |
| Sep 7, 4:05 PM EDT | Severe Thunderstorm Warning | PBZ | Butler, Mercer, Venango | 40 min |
| Sep 7, 5:10 PM EDT | Severe Thunderstorm Warning | CTP | McKean, Warren | 65 min |
| Sep 8, 11:49 AM EDT | Severe Thunderstorm Warning | CTP | Cameron, Clearfield, Clinton, Elk, Potter, Tioga | 56 min |
| Sep 8, 11:57 AM EDT | Severe Thunderstorm Warning | CTP | Bedford, Blair, Cambria, Centre, Clearfield, Huntingdon and 1 more | 63 min |
| Sep 8, 12:32 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Centre, Clearfield, Clinton, Lycoming, Potter and 1 more | 58 min |
| Sep 8, 12:55 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Blair, Centre, Cumberland, Franklin, Fulton and 6 more | 65 min |
| Sep 8, 1:09 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Franklin, York | 51 min |
| Sep 8, 1:29 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Clinton, Huntingdon, Juniata, Lycoming, Mifflin and 5 more | 61 min |
| Sep 8, 1:43 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Cumberland, Dauphin, Franklin, Juniata, Northumberland and 3 more | 62 min |
| Sep 8, 1:55 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Lancaster, Lebanon, York | 65 min |
| Sep 8, 2:11 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Dauphin, Lebanon, Lycoming, Montour, Northumberland and 4 more | 94 min |
| Sep 8, 2:40 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Chester, Lehigh, Montgomery, Northampton | 65 min |
| Sep 8, 2:52 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 53 min |
| Sep 8, 3:10 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 35 min |
| Sep 8, 3:45 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Lehigh, Monroe, Montgomery, Northampton | 60 min |
| Sep 8, 4:29 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 61 min |
| Sep 18, 12:32 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Lancaster, York | 43 min |
| Sep 18, 1:03 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 57 min |
| Sep 18, 1:16 PM EDT | Severe Thunderstorm Warning | CTP | Adams, York | 59 min |
| Sep 18, 1:22 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Lancaster, Lebanon, Schuylkill | 53 min |
| Sep 18, 1:32 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh | 43 min |
| Sep 18, 2:13 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Cumberland, Dauphin, Lancaster, Lebanon, Schuylkill and 1 more | 62 min |
| Sep 18, 2:23 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Montgomery | 30 min |
| Sep 18, 2:52 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Lehigh, Northampton | 17 min |
| Sep 18, 3:03 PM EDT | Severe Thunderstorm Warning | BGM | Pike | 32 min |
| Sep 18, 3:11 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 79 min |
| Sep 18, 4:19 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Delaware, Montgomery | 56 min |
| Sep 18, 4:23 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh, Monroe, Northampton | 52 min |
| Sep 18, 5:01 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Chester, Delaware, Lehigh, Montgomery, Northampton and 1 more | 59 min |
| Sep 18, 5:12 PM EDT | Severe Thunderstorm Warning | PHI | Delaware, Philadelphia | 78 min |
| Sep 18, 5:13 PM EDT | Severe Thunderstorm Warning | PHI | Monroe, Northampton | 62 min |
| Sep 18, 6:00 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery, Philadelphia | 60 min |
| Sep 22, 12:51 AM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Lawrence, Mercer | 54 min |
| Sep 22, 4:27 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 63 min |
| Sep 22, 4:54 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 49 min |
| Sep 22, 6:05 PM EDT | Severe Thunderstorm Warning | PBZ | Forest, Mercer, Venango | 40 min |
| Sep 22, 6:39 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Butler, Lawrence | 51 min |
| Sep 22, 6:46 PM EDT | Severe Thunderstorm Warning | PHI | Monroe, Northampton | 74 min |
| Sep 22, 7:02 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Beaver, Butler, Washington | 43 min |
| Sep 22, 7:12 PM EDT | Severe Thunderstorm Warning | PBZ | Forest | 33 min |
| Sep 22, 7:28 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Armstrong, Butler, Westmoreland | 32 min |
| Sep 22, 7:39 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Delaware, Philadelphia | 66 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- York County10
- Bucks County8
- Bradford County8
- Montgomery County7
- Northampton County7
- Adams County6
- Snyder County6
- Lancaster County6
- Lehigh County6
- Philadelphia County5
- Centre County5
- Berks County5
- Dauphin County5
- Monroe County5
- Clinton County4
- Lycoming County4
- Schuylkill County4
- Northumberland County4
- Butler County4
- Lebanon County4
- Chester County4
- Delaware County4
- Crawford County3
- Susquehanna County3
- Union County3
- Luzerne County3
- Columbia County3
- Sullivan County3
- Mercer County3
- Clearfield County3
- Tioga County3
- Huntingdon County3
- Cumberland County3
- Franklin County3
- Juniata County3
- Beaver County3
- Wyoming County2
- Lackawanna County2
- Carbon County2
- Venango County2
22 more counties
- Cameron County2
- Potter County2
- Bedford County2
- Blair County2
- Mifflin County2
- Perry County2
- Lawrence County2
- Forest County2
- Allegheny County2
- Wayne County1
- McKean County1
- Warren County1
- Elk County1
- Cambria County1
- Somerset County1
- Fulton County1
- Montour County1
- Pike County1
- Erie County1
- Washington County1
- Armstrong County1
- Westmoreland County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20112013
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.