Alert archive / Pennsylvania / Severe Thunderstorm Warnings / 2017
Severe Thunderstorm Warnings in Pennsylvania, April 2017
33 severe thunderstorm warnings in April 2017. 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 April 2017. Tap one for its archive.
- Severe Thunderstorm Warnings
- 33
- Busiest day
- April 16, 201710 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 |
|---|---|---|---|---|
| Apr 16, 3:49 PM EDT | Severe Thunderstorm Warning | PBZ | Butler, Lawrence, Mercer, Venango | 41 min |
| Apr 16, 4:54 PM EDT | Severe Thunderstorm Warning | BGM | Bradford, Susquehanna, Wayne | 51 min |
| Apr 16, 5:17 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Clearfield, Elk | 58 min |
| Apr 16, 5:24 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 51 min |
| Apr 16, 5:40 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 65 min |
| Apr 16, 5:42 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Indiana, Westmoreland | 35 min |
| Apr 16, 5:47 PM EDT | Severe Thunderstorm Warning | PBZ | Greene, Washington | 43 min |
| Apr 16, 6:15 PM EDT | Severe Thunderstorm Warning | PBZ | Greene, Washington | 45 min |
| Apr 16, 6:38 PM EDT | Severe Thunderstorm Warning | CTP | Blair, Cambria, Centre, Clearfield, Huntingdon | 20 min |
| Apr 16, 6:53 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Greene | 52 min |
| Apr 20, 12:41 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Westmoreland | 49 min |
| Apr 20, 2:27 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Butler, Clarion | 48 min |
| Apr 20, 2:28 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Fayette, Westmoreland | 47 min |
| Apr 20, 3:04 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana, Westmoreland | 41 min |
| Apr 20, 3:14 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Clarion, Jefferson | 46 min |
| Apr 20, 3:58 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 17 min |
| Apr 20, 6:37 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 38 min |
| Apr 20, 7:08 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 67 min |
| Apr 20, 8:29 PM EDT | Severe Thunderstorm Warning | CTP | McKean | 31 min |
| Apr 20, 8:40 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion, Forest, Venango | 50 min |
| Apr 20, 9:38 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion, Forest | 22 min |
| Apr 20, 9:41 PM EDT | Severe Thunderstorm Warning | CTP | Elk | 34 min |
| Apr 20, 10:13 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Clinton, Elk, Potter | 62 min |
| Apr 27, 5:28 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 47 min |
| Apr 27, 7:41 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 34 min |
| Apr 27, 8:19 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Beaver, Butler, Washington | 41 min |
| Apr 27, 8:59 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Armstrong, Butler, Westmoreland | 46 min |
| Apr 29, 4:20 AM EDT | Severe Thunderstorm Warning | PHI | Bucks, Chester, Montgomery, Philadelphia | 40 min |
| Apr 29, 4:32 AM EDT | Severe Thunderstorm Warning | PHI | Bucks | 43 min |
| Apr 30, 4:41 PM EDT | Severe Thunderstorm Warning | CLE | Crawford, Erie | 35 min |
| Apr 30, 5:49 PM EDT | Severe Thunderstorm Warning | CTP | Blair | 56 min |
| Apr 30, 6:19 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon | 56 min |
| Apr 30, 7:10 PM EDT | Severe Thunderstorm Warning | CTP | McKean, Potter | 65 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Allegheny County5
- Westmoreland County5
- Butler County4
- Washington County4
- Clarion County4
- Clearfield County3
- Elk County3
- Greene County3
- Armstrong County3
- Venango County2
- Wayne County2
- Cameron County2
- Indiana County2
- Blair County2
- Huntingdon County2
- Fayette County2
- Jefferson County2
- Erie County2
- McKean County2
- Forest County2
- Potter County2
- Beaver County2
- Bucks County2
- Lawrence County1
- Mercer County1
- Bradford County1
- Susquehanna County1
- Cambria County1
- Centre County1
- Warren County1
- Clinton County1
- Chester County1
- Montgomery County1
- Philadelphia County1
- Crawford County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20162018
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.