Alert archive / Pennsylvania / Severe Thunderstorm Warnings / 2020
Severe Thunderstorm Warnings in Pennsylvania, July 2020
131 severe thunderstorm warnings in July 2020. 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 2020. Tap one for its archive.
- Severe Thunderstorm Warnings
- 131
- Busiest day
- July 6, 202036 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 3, 5:09 PM EDT | Severe Thunderstorm Warning | CTP | Columbia | 18 min |
| Jul 3, 6:49 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 41 min |
| Jul 3, 8:13 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 24 min |
| Jul 5, 6:33 PM EDT | Severe Thunderstorm Warning | CTP | Somerset | 27 min |
| Jul 6, 12:45 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery, Philadelphia | 60 min |
| Jul 6, 1:15 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 60 min |
| Jul 6, 1:36 PM EDT | Severe Thunderstorm Warning | BGM | Wyoming | 39 min |
| Jul 6, 1:43 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery, Philadelphia | 62 min |
| Jul 6, 1:50 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 40 min |
| Jul 6, 2:04 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 41 min |
| Jul 6, 2:27 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery | 48 min |
| Jul 6, 2:28 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 28 min |
| Jul 6, 2:39 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery, Philadelphia | 66 min |
| Jul 6, 2:41 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 49 min |
| Jul 6, 2:51 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery | 24 min |
| Jul 6, 3:00 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Northampton | 45 min |
| Jul 6, 3:11 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 49 min |
| Jul 6, 3:38 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Lehigh, Northampton | 52 min |
| Jul 6, 3:43 PM EDT | Severe Thunderstorm Warning | CTP | Tioga | 26 min |
| Jul 6, 3:52 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 38 min |
| Jul 6, 3:56 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Lehigh, Monroe, Northampton | 64 min |
| Jul 6, 4:06 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh | 24 min |
| Jul 6, 4:13 PM EDT | Severe Thunderstorm Warning | BGM | Bradford, Susquehanna | 47 min |
| Jul 6, 4:31 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh, Monroe, Northampton | 44 min |
| Jul 6, 5:00 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 60 min |
| Jul 6, 5:00 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 45 min |
| Jul 6, 5:14 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 61 min |
| Jul 6, 5:17 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Lehigh, Montgomery, Northampton | 43 min |
| Jul 6, 5:20 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 42 min |
| Jul 6, 5:29 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 46 min |
| Jul 6, 5:32 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 58 min |
| Jul 6, 5:53 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Chester, Lehigh, Montgomery | 52 min |
| Jul 6, 6:00 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 60 min |
| Jul 6, 6:13 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 48 min |
| Jul 6, 6:18 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Montgomery | 35 min |
| Jul 6, 6:43 PM EDT | Severe Thunderstorm Warning | BGM | Pike | 62 min |
| Jul 6, 7:18 PM EDT | Severe Thunderstorm Warning | PHI | Monroe | 36 min |
| Jul 6, 7:20 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 85 min |
| Jul 6, 7:36 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 69 min |
| Jul 6, 7:57 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 41 min |
| Jul 6, 8:56 PM EDT | Severe Thunderstorm Warning | CTP | Adams, York | 49 min |
| Jul 7, 4:28 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Butler, Lawrence | 32 min |
| Jul 7, 4:34 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 26 min |
| Jul 7, 5:16 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 29 min |
| Jul 8, 5:09 PM EDT | Severe Thunderstorm Warning | BGM | Wyoming | 36 min |
| Jul 8, 5:42 PM EDT | Severe Thunderstorm Warning | BGM | Wyoming | 33 min |
| Jul 8, 5:54 PM EDT | Severe Thunderstorm Warning | BGM | Wyoming | 20 min |
| Jul 8, 6:01 PM EDT | Severe Thunderstorm Warning | CTP | York | 44 min |
| Jul 8, 6:09 PM EDT | Severe Thunderstorm Warning | CTP | Northumberland, Snyder, Union | 51 min |
| Jul 8, 6:15 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Lycoming, Sullivan | 60 min |
| Jul 8, 6:18 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 27 min |
| Jul 8, 6:54 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Juniata, Northumberland, Perry, Snyder | 36 min |
| Jul 8, 6:58 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming, Montour, Northumberland, Sullivan, Union | 62 min |
| Jul 9, 4:37 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Butler, Westmoreland | 23 min |
| Jul 9, 6:56 PM EDT | Severe Thunderstorm Warning | PBZ | Greene, Washington | 19 min |
| Jul 9, 7:01 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer, Venango | 14 min |
| Jul 9, 10:04 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 26 min |
| Jul 10, 3:41 PM EDT | Severe Thunderstorm Warning | PBZ | Butler, Lawrence, Mercer | 25 min |
| Jul 10, 4:03 PM EDT | Severe Thunderstorm Warning | PBZ | Butler, Mercer, Venango | 42 min |
| Jul 10, 5:07 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Beaver, Washington | 38 min |
| Jul 10, 5:27 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 33 min |
| Jul 10, 5:29 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Clarion | 31 min |
| Jul 10, 5:33 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Greene | 29 min |
| Jul 10, 5:43 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Beaver, Butler, Lawrence, Washington | 47 min |
| Jul 10, 5:54 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Washington, Westmoreland | 51 min |
| Jul 10, 6:12 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Fayette, Washington, Westmoreland | 33 min |
| Jul 10, 6:30 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 4 more | 45 min |
| Jul 12, 5:17 PM EDT | Severe Thunderstorm Warning | CTP | Cambria, Clearfield | 28 min |
| Jul 12, 7:06 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Northumberland, Schuylkill | 50 min |
| Jul 16, 3:02 PM EDT | Severe Thunderstorm Warning | CTP | Cambria, Somerset | 43 min |
| Jul 16, 3:47 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Armstrong, Butler, Westmoreland | 28 min |
| Jul 16, 4:12 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Butler | 33 min |
| Jul 16, 4:31 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 44 min |
| Jul 16, 5:02 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 28 min |
| Jul 16, 5:28 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer, Venango | 32 min |
| Jul 16, 6:12 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 33 min |
| Jul 19, 1:13 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 77 min |
| Jul 19, 4:34 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 26 min |
| Jul 19, 4:49 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Clinton, Elk, Potter, Tioga | 59 min |
| Jul 19, 5:01 PM EDT | Severe Thunderstorm Warning | BGM | Bradford | 59 min |
| Jul 19, 5:55 PM EDT | Severe Thunderstorm Warning | CLE | Crawford | 65 min |
| Jul 19, 6:29 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Susquehanna, Wayne | 46 min |
| Jul 19, 6:44 PM EDT | Severe Thunderstorm Warning | PBZ | Butler, Lawrence, Mercer | 46 min |
| Jul 19, 7:14 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne, Pike, Wayne, Wyoming | 46 min |
| Jul 19, 7:14 PM EDT | Severe Thunderstorm Warning | BGM | Wayne | 34 min |
| Jul 19, 7:19 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Butler, Clarion, Lawrence, Mercer | 24 min |
| Jul 19, 7:20 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Mifflin, Snyder, Union | 27 min |
| Jul 19, 7:43 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield, Elk | 47 min |
| Jul 19, 8:29 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield, Elk | 46 min |
| Jul 21, 1:03 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 44 min |
| Jul 21, 1:33 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Fulton | 42 min |
| Jul 21, 3:18 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Somerset | 42 min |
| Jul 21, 3:47 PM EDT | Severe Thunderstorm Warning | CTP | Somerset | 43 min |
| Jul 21, 5:05 PM EDT | Severe Thunderstorm Warning | CTP | Franklin, Fulton | 55 min |
| Jul 21, 5:41 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Cumberland, Franklin | 34 min |
| Jul 21, 6:43 PM EDT | Severe Thunderstorm Warning | CTP | York | 32 min |
| Jul 22, 1:38 PM EDT | Severe Thunderstorm Warning | CTP | Adams, York | 67 min |
| Jul 22, 2:09 PM EDT | Severe Thunderstorm Warning | CTP | Franklin, Fulton | 49 min |
| Jul 22, 2:10 PM EDT | Severe Thunderstorm Warning | PHI | Monroe, Northampton | 50 min |
| Jul 22, 2:19 PM EDT | Severe Thunderstorm Warning | BGM | Pike | 56 min |
| Jul 22, 3:07 PM EDT | Severe Thunderstorm Warning | BGM | Pike | 28 min |
| Jul 22, 3:39 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 36 min |
| Jul 22, 3:39 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 51 min |
| Jul 22, 4:01 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 22 min |
| Jul 22, 4:10 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Carbon, Lehigh, Northampton | 65 min |
| Jul 22, 4:25 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Chester, Lehigh, Montgomery | 50 min |
| Jul 22, 4:38 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 52 min |
| Jul 22, 4:49 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Carbon, Lehigh, Monroe, Northampton | 56 min |
| Jul 22, 5:09 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 1 more | 66 min |
| Jul 22, 5:16 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Monroe, Northampton | 59 min |
| Jul 22, 5:33 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 57 min |
| Jul 22, 5:40 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery, Philadelphia | 65 min |
| Jul 23, 2:54 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 66 min |
| Jul 23, 3:56 PM EDT | Severe Thunderstorm Warning | BGM | Bradford, Lackawanna, Susquehanna, Wayne, Wyoming | 64 min |
| Jul 23, 4:58 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Susquehanna, Wayne, Wyoming | 62 min |
| Jul 23, 7:00 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 30 min |
| Jul 23, 10:26 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 49 min |
| Jul 23, 11:16 PM EDT | Severe Thunderstorm Warning | PHI | Delaware | 44 min |
| Jul 23, 11:44 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 46 min |
| Jul 24, 12:42 AM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 48 min |
| Jul 24, 1:13 AM EDT | Severe Thunderstorm Warning | PHI | Bucks | 62 min |
| Jul 24, 9:21 PM EDT | Severe Thunderstorm Warning | CTP | Franklin | 24 min |
| Jul 27, 5:16 PM EDT | Severe Thunderstorm Warning | PBZ | Lawrence, Mercer | 29 min |
| Jul 27, 8:58 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Greene | 32 min |
| Jul 30, 5:19 PM EDT | Severe Thunderstorm Warning | BGM | Bradford, Susquehanna | 56 min |
| Jul 30, 6:14 PM EDT | Severe Thunderstorm Warning | BGM | Susquehanna | 61 min |
| Jul 30, 11:06 PM EDT | Severe Thunderstorm Warning | PHI | Delaware, Montgomery, Philadelphia | 39 min |
| Jul 30, 11:27 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 33 min |
| Jul 30, 11:35 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Philadelphia | 40 min |
| Jul 30, 11:51 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Chester, Lehigh, Montgomery, Northampton | 54 min |
| Jul 31, 12:10 AM EDT | Severe Thunderstorm Warning | PHI | Bucks | 50 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Bucks County23
- Montgomery County21
- Chester County18
- Berks County12
- Lehigh County12
- Philadelphia County11
- Northampton County11
- Butler County11
- Monroe County9
- Delaware County9
- Washington County8
- Mercer County8
- Wyoming County7
- Susquehanna County7
- Lawrence County7
- Allegheny County7
- Wayne County6
- Bradford County5
- Lancaster County5
- York County5
- Westmoreland County5
- Fayette County5
- Armstrong County5
- Somerset County4
- Carbon County4
- Pike County4
- Beaver County4
- Northumberland County4
- Greene County4
- Lackawanna County4
- Franklin County4
- Columbia County3
- Adams County3
- Snyder County3
- Union County3
- Venango County3
- Clarion County3
- Cambria County3
- Clearfield County3
- Elk County3
20 more counties
Nearby
Alerts in force nowTornadoes on recordThe radar archive20192021
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.