Alert archive / Pennsylvania / Severe Thunderstorm Warnings / 2017
Severe Thunderstorm Warnings in Pennsylvania, July 2017
84 severe thunderstorm warnings in July 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 July 2017. Tap one for its archive.
- Severe Thunderstorm Warnings
- 84
- Busiest day
- July 20, 201720 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, 2:22 AM EDT | Severe Thunderstorm Warning | CTP | Elk | 38 min |
| Jul 1, 1:24 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Juniata, Mifflin, Perry, Snyder, Union | 81 min |
| Jul 1, 1:38 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming, Sullivan | 67 min |
| Jul 1, 2:42 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Lebanon | 33 min |
| Jul 1, 2:50 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne, Susquehanna, Wayne, Wyoming | 55 min |
| Jul 1, 3:41 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh, Northampton | 49 min |
| Jul 1, 4:24 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Chester, Lehigh, Montgomery, Northampton | 51 min |
| Jul 1, 5:01 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 44 min |
| Jul 1, 5:08 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Lehigh, Montgomery, Northampton | 52 min |
| Jul 1, 5:35 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Delaware, Montgomery, Philadelphia | 40 min |
| Jul 1, 5:50 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 40 min |
| Jul 3, 6:01 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 44 min |
| Jul 4, 1:40 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Blair, Fulton, Huntingdon | 65 min |
| Jul 7, 3:36 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Greene | 24 min |
| Jul 7, 4:01 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 44 min |
| Jul 10, 3:26 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 34 min |
| Jul 10, 3:44 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Beaver, Butler, Lawrence | 46 min |
| Jul 11, 5:10 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Butler, Washington | 50 min |
| Jul 13, 2:09 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Mifflin, Snyder | 36 min |
| Jul 13, 2:43 PM EDT | Severe Thunderstorm Warning | CTP | Juniata, Mifflin, Perry, Snyder | 47 min |
| Jul 13, 4:15 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 60 min |
| Jul 13, 4:50 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery, Philadelphia | 40 min |
| Jul 13, 5:08 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery | 35 min |
| Jul 13, 5:21 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Philadelphia | 54 min |
| Jul 13, 5:44 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 46 min |
| Jul 14, 2:31 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 59 min |
| Jul 14, 3:18 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 12 min |
| Jul 14, 3:23 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 67 min |
| Jul 17, 12:42 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne, Wyoming | 48 min |
| Jul 17, 12:57 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 33 min |
| Jul 17, 1:07 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 53 min |
| Jul 17, 1:15 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Cumberland, York | 45 min |
| Jul 17, 1:20 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 40 min |
| Jul 17, 1:24 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne | 66 min |
| Jul 17, 1:56 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 64 min |
| Jul 17, 2:26 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne | 64 min |
| Jul 17, 3:10 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 35 min |
| Jul 17, 3:27 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 48 min |
| Jul 17, 3:43 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 47 min |
| Jul 17, 4:38 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 52 min |
| Jul 17, 4:56 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Susquehanna, Wyoming | 49 min |
| Jul 17, 5:26 PM EDT | Severe Thunderstorm Warning | BGM | Bradford, Wyoming | 34 min |
| Jul 17, 6:31 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne, Wyoming | 44 min |
| Jul 19, 7:32 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Perry | 39 min |
| Jul 20, 2:49 PM EDT | Severe Thunderstorm Warning | CTP | Tioga | 56 min |
| Jul 20, 2:57 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 33 min |
| Jul 20, 3:29 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 61 min |
| Jul 20, 3:31 PM EDT | Severe Thunderstorm Warning | CTP | Potter, Tioga | 59 min |
| Jul 20, 3:44 PM EDT | Severe Thunderstorm Warning | BGM | Bradford, Susquehanna | 46 min |
| Jul 20, 4:13 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming, Sullivan, Tioga | 92 min |
| Jul 20, 4:16 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 14 min |
| Jul 20, 4:28 PM EDT | Severe Thunderstorm Warning | BGM | Bradford, Lackawanna, Susquehanna, Wyoming | 32 min |
| Jul 20, 4:47 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne, Wyoming | 28 min |
| Jul 20, 4:59 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne, Susquehanna, Wayne, Wyoming | 46 min |
| Jul 20, 5:12 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 48 min |
| Jul 20, 5:35 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 55 min |
| Jul 20, 5:37 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 53 min |
| Jul 20, 5:42 PM EDT | Severe Thunderstorm Warning | BGM | Luzerne | 63 min |
| Jul 20, 5:44 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne, Pike, Wayne | 46 min |
| Jul 20, 6:22 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 53 min |
| Jul 20, 6:24 PM EDT | Severe Thunderstorm Warning | PHI | Monroe, Northampton | 66 min |
| Jul 20, 6:29 PM EDT | Severe Thunderstorm Warning | BGM | Pike | 16 min |
| Jul 20, 7:00 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Carbon, Lehigh, Northampton | 60 min |
| Jul 20, 7:52 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 53 min |
| Jul 22, 5:18 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Delaware, Montgomery, Philadelphia | 42 min |
| Jul 22, 5:50 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 55 min |
| Jul 22, 6:07 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Lebanon, Northumberland, Perry, Schuylkill | 53 min |
| Jul 22, 6:38 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Philadelphia | 52 min |
| Jul 23, 3:22 PM EDT | Severe Thunderstorm Warning | CTP | Tioga | 38 min |
| Jul 23, 3:40 PM EDT | Severe Thunderstorm Warning | CTP | Potter, Tioga | 80 min |
| Jul 23, 5:07 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming, Sullivan | 53 min |
| Jul 23, 5:36 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Lancaster, York | 54 min |
| Jul 23, 6:00 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming, Montour, Northumberland | 60 min |
| Jul 23, 6:59 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Lycoming, Montour, Northumberland | 61 min |
| Jul 24, 2:34 AM EDT | Severe Thunderstorm Warning | PHI | Delaware, Philadelphia | 41 min |
| Jul 24, 3:26 PM EDT | Severe Thunderstorm Warning | BGM | Bradford, Lackawanna, Susquehanna, Wyoming | 64 min |
| Jul 24, 3:58 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Montour, Northumberland, Union | 62 min |
| Jul 24, 4:35 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Pike, Wayne | 25 min |
| Jul 24, 4:56 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Northumberland, Schuylkill | 64 min |
| Jul 24, 5:31 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh | 59 min |
| Jul 24, 6:30 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Lehigh, Montgomery | 60 min |
| Jul 24, 7:26 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Chester, Montgomery | 49 min |
| Jul 24, 7:50 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery, Philadelphia | 25 min |
| Jul 24, 8:08 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 52 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Bucks County13
- Montgomery County12
- Luzerne County10
- Susquehanna County10
- Chester County10
- Delaware County10
- Lackawanna County9
- Wyoming County9
- Philadelphia County9
- Bradford County9
- Berks County8
- Lehigh County7
- Northampton County6
- Lycoming County5
- Tioga County5
- Northumberland County5
- Perry County4
- Wayne County4
- Monroe County4
- Mifflin County3
- Snyder County3
- Sullivan County3
- Dauphin County3
- York County3
- Carbon County3
- Pike County3
- Montour County3
- Columbia County3
- Centre County2
- Juniata County2
- Union County2
- Lebanon County2
- Washington County2
- Fayette County2
- Beaver County2
- Allegheny County2
- Butler County2
- Lancaster County2
- Cumberland County2
- Potter County2
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.