Alert archive / Pennsylvania / 2020
Weather alerts in Pennsylvania, January 2020
186 weather alerts in January 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in January 2020. Tap one for its archive.
- Alerts
- 186
- Warnings
- 45
- Watches
- 2
- Advisories
- 29
- Busiest day
- January 8, 202083 alerts
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 |
|---|---|---|---|---|
| Dec 31, 7:00 PM EST | Snow Squall Warning | BGM | Wayne | 49 min |
| Dec 31, 7:12 PM EST | Special Weather Statement | CTP | Centre, Clearfield | 33 min |
| Dec 31, 7:56 PM EST | Special Weather Statement | CTP | Clearfield | 34 min |
| Dec 31, 7:57 PM EST | Special Weather Statement | PBZ | Armstrong | 63 min |
| Dec 31, 8:10 PM EST | Special Weather Statement | PBZ | Allegheny | 80 min |
| Dec 31, 8:45 PM EST | Special Weather Statement | CTP | Blair | 45 min |
| Dec 31, 9:25 PM EST | Special Weather Statement | PBZ | Allegheny, Indiana | 95 min |
| Dec 31, 10:59 PM EST | Special Weather Statement | PBZ | Westmoreland | 61 min |
| Jan 4, 8:33 AM EST | Dense Fog Advisory | PHI | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 4 hr |
| Jan 7, 2:01 AM EST | Winter Weather Advisory | CTP | Adams, Bedford, Cumberland, Dauphin, Franklin, Fulton and 5 more | 17 hr |
| Jan 7, 6:19 AM EST | Winter Weather Advisory | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 14 hr |
| Jan 7, 12:29 PM EST | Mesoscale Discussion | SPC | Adams, Cumberland, Franklin, Fulton, Huntingdon, Juniata and 2 more | 2 hr |
| Jan 7, 1:19 PM EST | Winter Weather Advisory | CLE | Erie | 22 hr |
| Jan 7, 2:27 PM EST | Wind Advisory | PHI | Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 1 more | 28 hr |
| Jan 8, 12:48 AM EST | Special Weather Statement | CTP | Huntingdon | 57 min |
| Jan 8, 1:33 AM EST | Special Weather Statement | CLE | Erie | 87 min |
| Jan 8, 2:49 AM EST | Special Weather Statement | CTP | Clearfield | 56 min |
| Jan 8, 3:11 AM EST | Special Weather Statement | PBZ | Clarion, Forest, Jefferson, Venango | 79 min |
| Jan 8, 3:16 AM EST | Special Weather Statement | CLE | Crawford, Erie | 89 min |
| Jan 8, 3:57 AM EST | Special Weather Statement | CTP | McKean, Warren | 63 min |
| Jan 8, 4:24 AM EST | Special Weather Statement | CTP | Clearfield | 66 min |
| Jan 8, 4:30 AM EST | Special Weather Statement | PBZ | Clarion, Forest, Jefferson, Venango | 75 min |
| Jan 8, 4:47 AM EST | Special Weather Statement | CLE | Crawford | 88 min |
| Jan 8, 5:02 AM EST | Special Weather Statement | CTP | Lycoming | 43 min |
| Jan 8, 5:07 AM EST | Special Weather Statement | CTP | Cameron, Elk, McKean, Potter | 68 min |
| Jan 8, 5:13 AM EST | Special Weather Statement | CTP | Bedford, Fulton, Somerset | 62 min |
| Jan 8, 5:23 AM EST | Snow Squall Warning | CTP | Centre, Clearfield, Clinton, Lycoming | 67 min |
| Jan 8, 5:36 AM EST | Snow Squall Warning | PBZ | Clarion, Venango | 24 min |
| Jan 8, 5:41 AM EST | Snow Squall Warning | CTP | Clearfield, Elk | 49 min |
| Jan 8, 5:50 AM EST | Special Weather Statement | CTP | Mifflin | 55 min |
| Jan 8, 5:52 AM EST | Snow Squall Warning | CTP | Centre, Clinton, Columbia, Lycoming, Montour, Northumberland and 1 more | 53 min |
| Jan 8, 6:02 AM EST | Special Weather Statement | PBZ | Clarion | 28 min |
| Jan 8, 6:21 AM EST | Special Weather Statement | PBZ | Jefferson | 24 min |
| Jan 8, 6:25 AM EST | Snow Squall Warning | CTP | Cameron, Centre, Clearfield, Clinton | 50 min |
| Jan 8, 6:32 AM EST | Special Weather Statement | PBZ | Clarion, Jefferson | 28 min |
| Jan 8, 6:37 AM EST | Mesoscale Discussion | SPC | Bradford, Susquehanna, Tioga | 6 hr |
| Jan 8, 6:40 AM EST | Special Weather Statement | CTP | Adams, Bedford, Franklin, Fulton, Somerset | 65 min |
| Jan 8, 6:44 AM EST | Snow Squall Warning | CTP | Columbia, Lycoming, Montour, Northumberland, Union | 46 min |
| Jan 8, 6:48 AM EST | Snow Squall Warning | CTP | Clinton, Lycoming, Northumberland, Union | 42 min |
| Jan 8, 6:53 AM EST | Special Weather Statement | CTP | Juniata, Mifflin | 67 min |
| Jan 8, 6:59 AM EST | Special Weather Statement | BGM | Luzerne | 61 min |
| Jan 8, 7:07 AM EST | Snow Squall Warning | CTP | Bedford, Franklin, Fulton, Somerset | 23 min |
| Jan 8, 7:12 AM EST | Snow Squall Warning | CTP | Centre, Clearfield, Clinton | 48 min |
| Jan 8, 7:18 AM EST | Special Weather Statement | PBZ | Clarion, Forest, Jefferson, Mercer, Venango | 57 min |
| Jan 8, 7:24 AM EST | Snow Squall Warning | CTP | York | 51 min |
| Jan 8, 7:31 AM EST | Snow Squall Warning | CTP | Adams, Cumberland, Franklin | 44 min |
| Jan 8, 7:41 AM EST | Snow Squall Warning | CTP | Centre, Clearfield, Clinton, Union | 34 min |
| Jan 8, 7:44 AM EST | Snow Squall Warning | PHI | Chester | 46 min |
| Jan 8, 7:49 AM EST | Snow Squall Warning | PHI | Carbon, Monroe, Northampton | 41 min |
| Jan 8, 7:59 AM EST | Special Weather Statement | BGM | Pike | 46 min |
| Jan 8, 8:06 AM EST | Special Weather Statement | CTP | Centre, Northumberland, Snyder, Union | 54 min |
| Jan 8, 8:11 AM EST | Snow Squall Warning | CTP | Bedford, Franklin, Fulton | 49 min |
| Jan 8, 8:14 AM EST | Snow Squall Warning | CTP | Adams, York | 46 min |
| Jan 8, 8:16 AM EST | Special Weather Statement | PBZ | Butler, Clarion, Forest, Jefferson, Lawrence, Mercer and 1 more | 59 min |
| Jan 8, 8:27 AM EST | Snow Squall Warning | CTP | Centre, Mifflin | 48 min |
| Jan 8, 8:28 AM EST | Snow Squall Warning | PHI | Berks, Bucks, Chester, Delaware, Montgomery | 47 min |
| Jan 8, 8:28 AM EST | Snow Squall Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 47 min |
| Jan 8, 8:29 AM EST | Snow Squall Warning | PBZ | Butler, Lawrence, Mercer, Venango | 61 min |
| Jan 8, 8:30 AM EST | Snow Squall Warning | PHI | Monroe | 45 min |
| Jan 8, 8:40 AM EST | Special Weather Statement | CTP | Huntingdon | 65 min |
| Jan 8, 8:41 AM EST | Special Weather Statement | CTP | Clearfield | 34 min |
| Jan 8, 8:51 AM EST | Special Weather Statement | CTP | Adams, Bedford, Franklin, Fulton | 24 min |
| Jan 8, 9:04 AM EST | Special Weather Statement | CTP | Centre | 41 min |
| Jan 8, 9:21 AM EST | Snow Squall Warning | PBZ | Armstrong, Beaver, Butler, Clarion, Indiana, Jefferson and 2 more | 39 min |
| Jan 8, 9:28 AM EST | Snow Squall Warning | CTP | Blair, Centre, Huntingdon | 22 min |
| Jan 8, 9:34 AM EST | Special Weather Statement | CTP | McKean | 56 min |
| Jan 8, 9:39 AM EST | Special Weather Statement | CTP | Tioga | 51 min |
| Jan 8, 9:46 AM EST | Special Weather Statement | CTP | Clearfield | 29 min |
| Jan 8, 9:55 AM EST | Snow Squall Warning | CTP | Huntingdon, Juniata, Mifflin, Perry | 35 min |
| Jan 8, 10:01 AM EST | Special Weather Statement | PBZ | Armstrong, Butler, Indiana | 44 min |
| Jan 8, 10:08 AM EST | Special Weather Statement | PBZ | Beaver | 52 min |
| Jan 8, 10:09 AM EST | Special Weather Statement | CTP | Centre | 36 min |
| Jan 8, 10:15 AM EST | Special Weather Statement | CTP | Huntingdon | 60 min |
| Jan 8, 10:26 AM EST | Special Weather Statement | CTP | Centre | 49 min |
| Jan 8, 10:35 AM EST | Special Weather Statement | CTP | Juniata | 40 min |
| Jan 8, 10:45 AM EST | Special Weather Statement | BGM | Bradford | 45 min |
| Jan 8, 10:45 AM EST | Snow Squall Warning | PBZ | Allegheny, Armstrong, Beaver, Butler, Indiana, Westmoreland | 45 min |
| Jan 8, 10:58 AM EST | Special Weather Statement | CTP | Blair | 62 min |
| Jan 8, 11:02 AM EST | Special Weather Statement | CTP | Dauphin, Lebanon | 58 min |
| Jan 8, 11:25 AM EST | Snow Squall Warning | PHI | Berks | 35 min |
| Jan 8, 11:38 AM EST | Special Weather Statement | CTP | Juniata, Mifflin | 22 min |
| Jan 8, 11:45 AM EST | Special Weather Statement | CTP | Lancaster | 60 min |
| Jan 8, 11:56 AM EST | Special Weather Statement | CTP | Lebanon | 19 min |
| Jan 8, 12:00 PM EST | Special Weather Statement | CTP | Juniata, Mifflin | 45 min |
| Jan 8, 12:07 PM EST | Special Weather Statement | PHI | Montgomery | 23 min |
| Jan 8, 12:38 PM EST | Special Weather Statement | PHI | Montgomery, Philadelphia | 37 min |
| Jan 8, 12:49 PM EST | Snow Squall Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 26 min |
| Jan 8, 1:22 PM EST | Special Weather Statement | CTP | Clearfield | 23 min |
| Jan 8, 1:32 PM EST | Special Weather Statement | CTP | Perry | 28 min |
| Jan 8, 1:48 PM EST | Snow Squall Warning | PHI | Carbon, Monroe | 42 min |
| Jan 8, 1:51 PM EST | Special Weather Statement | CTP | Clearfield | 24 min |
| Jan 8, 2:05 PM EST | Special Weather Statement | PHI | Montgomery | 25 min |
| Jan 8, 2:32 PM EST | Special Weather Statement | PHI | Carbon, Northampton | 28 min |
| Jan 8, 2:33 PM EST | Special Weather Statement | PHI | Philadelphia | 27 min |
| Jan 8, 2:46 PM EST | Special Weather Statement | PHI | Berks | 44 min |
| Jan 8, 2:53 PM EST | Special Weather Statement | CTP | Franklin | 22 min |
| Jan 8, 3:05 PM EST | Special Weather Statement | PHI | Northampton | 40 min |
| Jan 8, 8:04 PM EST | Special Weather Statement | CTP | Clearfield | 56 min |
| Jan 10, 7:58 AM EST | Winter Weather Advisory | CTP | Cameron, Centre, Clinton, Lycoming, Potter, Tioga | 4 hr |
| Jan 10, 3:23 PM EST | Wind Advisory | CLE | Crawford, Erie | 37 hr |
| Jan 11, 3:15 AM EST | High Wind Watch | PBZ | Fayette, Westmoreland | 10 hr |
| Jan 11, 3:15 AM EST | Wind Advisory | PBZ | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 8 more | 31 hr |
| Jan 11, 4:07 AM EST | High Wind Watch | CTP | Bedford, Blair, Cambria, Cameron, Centre, Clearfield and 18 more | 10 hr |
| Jan 11, 4:07 AM EST | Wind Advisory | CTP | Adams, Bedford, Blair, Cambria, Cameron, Centre and 27 more | 30 hr |
| Jan 11, 1:12 PM EST | Wind Advisory | PHI | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 24 hr |
| Jan 11, 1:36 PM EST | Wind Advisory | BGM | Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more | 23 hr |
| Jan 11, 2:06 PM EST | High Wind Warning | CLE | Crawford, Erie | 19 hr |
| Jan 11, 4:45 PM EST | Special Weather Statement | PBZ | Allegheny, Greene, Washington | 60 min |
| Jan 11, 5:20 PM EST | Severe Thunderstorm Warning | PBZ | Allegheny, Washington | 25 min |
| Jan 11, 5:41 PM EST | Special Weather Statement | PBZ | Allegheny, Fayette, Greene, Indiana, Westmoreland | 79 min |
| Jan 11, 10:56 PM EST | Special Weather Statement | CTP | Franklin, Fulton | 64 min |
| Jan 11, 11:51 PM EST | Special Weather Statement | CTP | Adams, Cumberland, York | 54 min |
| Jan 12, 12:34 AM EST | Special Weather Statement | CTP | Lancaster, York | 56 min |
| Jan 12, 1:26 AM EST | Special Weather Statement | CTP | Lancaster | 49 min |
| Jan 12, 1:44 AM EST | Special Weather Statement | PHI | Montgomery | 46 min |
| Jan 12, 3:41 AM EST | Special Weather Statement | CTP | Adams, Cumberland, Franklin, Perry | 64 min |
| Jan 12, 4:38 AM EST | Special Weather Statement | PHI | Berks, Carbon | 37 min |
| Jan 12, 4:49 AM EST | Special Weather Statement | BGM | Lackawanna, Luzerne | 56 min |
| Jan 12, 4:52 AM EST | Special Weather Statement | BGM | Wayne | 53 min |
| Jan 12, 4:52 AM EST | Special Weather Statement | CTP | Schuylkill | 38 min |
| Jan 12, 5:12 AM EST | Special Weather Statement | PHI | Carbon, Lehigh, Monroe, Northampton | 48 min |
| Jan 12, 5:16 AM EST | Special Weather Statement | PHI | Berks, Chester | 44 min |
| Jan 12, 5:27 AM EST | Special Weather Statement | BGM | Pike | 48 min |
| Jan 12, 5:46 AM EST | Special Weather Statement | PHI | Monroe | 44 min |
| Jan 12, 5:54 AM EST | Special Weather Statement | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 51 min |
| Jan 12, 6:29 AM EST | Special Weather Statement | PHI | Bucks | 46 min |
| Jan 12, 6:32 AM EST | Special Weather Statement | PHI | Philadelphia | 43 min |
| Jan 15, 2:32 AM EST | Dense Fog Advisory | PBZ | Greene, Washington | 9 hr |
| Jan 15, 1:09 PM EST | Winter Weather Advisory | CTP | McKean, Warren | 30 hr |
| Jan 15, 1:18 PM EST | Wind Advisory | PHI | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 30 hr |
| Jan 15, 2:23 PM EST | Wind Advisory | CTP | Adams, Bedford, Blair, Cambria, Centre, Clinton and 21 more | 29 hr |
| Jan 15, 2:36 PM EST | Wind Advisory | BGM | Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more | 28 hr |
| Jan 15, 3:15 PM EST | Winter Weather Advisory | CLE | Crawford, Erie | 28 hr |
| Jan 16, 11:26 AM EST | Special Weather Statement | CTP | Tioga | 49 min |
| Jan 16, 11:33 AM EST | Special Weather Statement | BGM | Bradford, Susquehanna | 27 min |
| Jan 16, 11:54 AM EST | Special Weather Statement | BGM | Bradford, Susquehanna, Wayne | 36 min |
| Jan 16, 12:25 PM EST | Special Weather Statement | BGM | Lackawanna, Pike, Wayne | 20 min |
| Jan 16, 12:54 PM EST | Special Weather Statement | BGM | Lackawanna, Pike | 36 min |
| Jan 16, 12:54 PM EST | Special Weather Statement | CTP | Sullivan | 51 min |
| Jan 16, 1:39 PM EST | Special Weather Statement | PHI | Carbon, Monroe, Northampton | 21 min |
| Jan 16, 2:11 PM EST | Special Weather Statement | PHI | Monroe | 34 min |
| Jan 16, 2:19 PM EST | Special Weather Statement | PHI | Northampton | 26 min |
| Jan 16, 2:24 PM EST | Special Weather Statement | CTP | Cambria | 66 min |
| Jan 16, 3:39 PM EST | Special Weather Statement | PBZ | Allegheny, Armstrong, Butler, Indiana, Westmoreland | 51 min |
| Jan 16, 3:41 PM EST | Special Weather Statement | PBZ | Clarion, Forest, Jefferson, Mercer, Venango | 64 min |
| Jan 16, 4:02 PM EST | Special Weather Statement | CTP | Blair, Cambria, Fulton, Huntingdon | 58 min |
| Jan 16, 4:18 PM EST | Snow Squall Warning | PHI | Monroe, Northampton | 45 min |
| Jan 16, 4:30 PM EST | Special Weather Statement | CTP | Centre, Clearfield, Juniata, Mifflin, Snyder, Union | 45 min |
| Jan 16, 4:50 PM EST | Special Weather Statement | PBZ | Armstrong, Butler, Clarion, Indiana, Jefferson, Lawrence and 2 more | 55 min |
| Jan 16, 5:01 PM EST | Special Weather Statement | CTP | Bedford, Fulton, Somerset | 59 min |
| Jan 16, 5:35 PM EST | Special Weather Statement | CTP | Cambria | 55 min |
| Jan 16, 5:55 PM EST | Special Weather Statement | PBZ | Armstrong, Butler, Clarion, Indiana, Jefferson, Lawrence and 2 more | 65 min |
| Jan 16, 5:57 PM EST | Special Weather Statement | CTP | Bedford, Fulton, Somerset | 63 min |
| Jan 16, 8:42 PM EST | Special Weather Statement | CTP | Clearfield, Elk | 63 min |
| Jan 16, 9:35 PM EST | Special Weather Statement | CTP | Clearfield, Mifflin | 55 min |
| Jan 16, 10:35 PM EST | Special Weather Statement | CTP | Blair, Huntingdon, Mifflin, Perry | 55 min |
| Jan 16, 11:29 PM EST | Special Weather Statement | CTP | Blair, Cambria, Huntingdon | 61 min |
| Jan 17, 3:18 AM EST | Winter Weather Advisory | CLE | Crawford, Erie | 36 hr |
| Jan 17, 3:37 AM EST | Winter Weather Advisory | PHI | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 41 hr |
| Jan 17, 2:02 PM EST | Winter Weather Advisory | PBZ | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 8 more | 28 hr |
| Jan 17, 3:01 PM EST | Winter Weather Advisory | CTP | Adams, Bedford, Blair, Cambria, Cameron, Centre and 27 more | 30 hr |
| Jan 17, 3:10 PM EST | Winter Weather Advisory | BGM | Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more | 38 hr |
| Jan 18, 3:50 AM EST | Wind Advisory | CLE | Erie | 29 hr |
| Jan 18, 11:53 AM EST | Special Weather Statement | CTP | Adams, Cameron, Centre, Clearfield, Clinton, Cumberland and 10 more | 82 min |
| Jan 18, 3:27 PM EST | Winter Weather Advisory | CTP | Warren | 30 hr |
| Jan 18, 3:34 PM EST | Lake Effect Snow Warning | CLE | Erie | 42 hr |
| Jan 18, 3:34 PM EST | Winter Weather Advisory | CLE | Crawford | 32 hr |
| Jan 19, 6:15 PM EST | Special Weather Statement | BGM | Susquehanna | 45 min |
| Jan 19, 7:27 PM EST | Special Weather Statement | BGM | Wayne | 48 min |
| Jan 24, 2:56 AM EST | Wind Advisory | PBZ | Fayette, Westmoreland | 16 hr |
| Jan 24, 3:16 AM EST | Winter Weather Advisory | PHI | Carbon, Lehigh, Monroe, Northampton | 33 hr |
| Jan 24, 3:11 PM EST | Winter Weather Advisory | BGM | Pike, Wayne | 23 hr |
| Jan 25, 5:44 AM EST | Special Weather Statement | CTP | Potter, Tioga | 91 min |
| Jan 25, 10:32 AM EST | Areal Flood Warning | PHI | Chester, Delaware | 4 hr |
| Jan 25, 11:34 AM EST | River Flood Warning | PHI | Chester | 7 hr |
| Jan 25, 11:52 AM EST | Areal Flood Advisory | PHI | Berks, Bucks, Chester, Delaware, Lehigh, Montgomery | 3 hr |
| Jan 25, 11:52 AM EST | River Flood Warning | PHI | Delaware | 4 hr |
| Jan 25, 11:55 AM EST | Areal Flood Warning | PHI | Chester, Lehigh, Montgomery, Philadelphia | 3 hr |
| Jan 25, 12:02 PM EST | Areal Flood Warning | PHI | Chester, Delaware, Philadelphia | 3 hr |
| Jan 25, 12:57 PM EST | Areal Flood Warning | PHI | Chester | 5 hr |
| Jan 25, 2:59 PM EST | Areal Flood Warning | PHI | Chester, Delaware, Philadelphia | 3 hr |
| Jan 25, 3:00 PM EST | Areal Flood Warning | PHI | Chester, Lehigh, Montgomery, Philadelphia | 4 hr |
| Jan 25, 3:00 PM EST | Areal Flood Warning | PHI | Chester, Delaware | 2 hr |
| Jan 25, 4:05 PM EST | Areal Flood Warning | PHI | Montgomery, Philadelphia | 6 hr |
| Jan 25, 6:28 PM EST | River Flood Warning | PHI | Chester, Montgomery, Philadelphia | 7 hr |
| Jan 25, 8:00 PM EST | River Flood Warning | PHI | Chester, Delaware | 6 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 1 |
| Mesoscale Discussion | 2 |
| Special Weather Statement | 108 |
| Flooding | |
| Areal Flood Warning | 8 |
| River Flood Warning | 4 |
| Areal Flood Advisory | 1 |
| Winter | |
| Lake Effect Snow Warning | 1 |
| Snow Squall Warning | 30 |
| Winter Weather Advisory | 15 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 2 |
| Wind Advisory | 11 |
| Fog and smoke | |
| Dense Fog Advisory | 2 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Chester County23
- Clearfield County21
- Centre County19
- Montgomery County19
- Philadelphia County18
- Delaware County17
- Fulton County15
- Franklin County14
- Mifflin County14
- Monroe County13
- Huntingdon County13
- Clarion County13
- Northampton County12
- Adams County12
- Bedford County12
- Juniata County12
- Jefferson County12
- Clinton County12
- Berks County11
- Carbon County11
- Perry County11
- Venango County11
- Union County11
- Blair County10
- Bucks County10
- Lehigh County10
- Cumberland County10
- Somerset County10
- York County10
- Lycoming County10
- Butler County10
- Wayne County9
- Armstrong County9
- Allegheny County9
- Erie County9
- Tioga County9
- Mercer County9
- Indiana County8
- Westmoreland County8
- McKean County8
27 more counties
- Pike County8
- Cambria County8
- Lancaster County7
- Forest County7
- Crawford County7
- Cameron County7
- Elk County7
- Potter County7
- Northumberland County7
- Bradford County7
- Susquehanna County7
- Snyder County7
- Lawrence County7
- Dauphin County6
- Lebanon County6
- Warren County6
- Lackawanna County6
- Columbia County5
- Montour County5
- Luzerne County5
- Beaver County5
- Fayette County5
- Greene County5
- Washington County5
- Sullivan County5
- Schuylkill County4
- Wyoming County3
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.