Alert archive / Pennsylvania / Winter Weather Advisories
Winter Weather Advisories in Pennsylvania, 2021
83 winter weather advisories in 2021. 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 winter weather advisories reaches back to 2005.
Winter Weather Advisories by county
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Winter Weather Advisories
- 83
- Busiest month
- February32 winter weather advisories
- Busiest day
- January 25, 20215 winter weather advisories
Over time
By month
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 |
|---|---|---|---|---|
| Jan 1, 12:55 PM EST | Winter Weather Advisory | PBZ | Armstrong, Butler, Clarion, Fayette, Forest, Jefferson and 4 more | 5 hr |
| Jan 2, 2:41 PM EST | Winter Weather Advisory | BGM | Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more | 35 hr |
| Jan 2, 2:55 PM EST | Winter Weather Advisory | PHI | Berks, Bucks, Carbon, Chester, Lehigh, Monroe and 2 more | 37 hr |
| Jan 2, 3:16 PM EST | Winter Weather Advisory | CTP | Adams, Bedford, Blair, Cambria, Cameron, Centre and 27 more | 32 hr |
| Jan 2, 3:35 PM EST | Winter Weather Advisory | PBZ | Clarion, Fayette, Forest, Jefferson, Venango, Westmoreland | 21 hr |
| Jan 3, 3:42 AM EST | Winter Weather Advisory | CLE | Crawford, Erie | 6 hr |
| Jan 15, 2:59 AM EST | Winter Weather Advisory | CTP | Potter | 24 hr |
| Jan 16, 3:19 AM EST | Winter Weather Advisory | PBZ | Fayette, Westmoreland | 28 hr |
| Jan 16, 1:53 PM EST | Winter Weather Advisory | CTP | Cambria, Somerset | 17 hr |
| Jan 17, 1:00 PM EST | Winter Weather Advisory | CLE | Erie | 21 hr |
| Jan 19, 2:37 AM EST | Winter Weather Advisory | PBZ | Fayette, Westmoreland | 34 hr |
| Jan 19, 3:00 AM EST | Winter Weather Advisory | CTP | Cambria, McKean, Somerset, Warren | 34 hr |
| Jan 19, 4:06 AM EST | Winter Weather Advisory | CLE | Crawford, Erie | 28 hr |
| Jan 25, 3:29 AM EST | Winter Weather Advisory | CTP | Adams, Blair, Cambria, Cameron, Centre, Clearfield and 25 more | 43 hr |
| Jan 25, 3:47 AM EST | Winter Weather Advisory | PBZ | Armstrong, Beaver, Butler, Clarion, Forest, Jefferson and 3 more | 30 hr |
| Jan 25, 3:52 AM EST | Winter Weather Advisory | CLE | Crawford, Erie | 33 hr |
| Jan 25, 3:08 PM EST | Winter Weather Advisory | PHI | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 34 hr |
| Jan 25, 3:19 PM EST | Winter Weather Advisory | BGM | Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more | 38 hr |
| Jan 28, 4:09 AM EST | Winter Weather Advisory | CLE | Crawford, Erie | 30 hr |
| Jan 28, 1:12 PM EST | Winter Weather Advisory | CTP | Warren | 21 hr |
| Jan 30, 3:42 AM EST | Winter Weather Advisory | PBZ | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 5 more | 71 hr |
| Jan 31, 4:52 AM EST | Winter Weather Advisory | CTP | Cameron, Clearfield, Elk, Potter, Tioga | 48 hr |
| Feb 2, 5:06 AM EST | Winter Weather Advisory | CTP | Dauphin, Lancaster, Lebanon, Lycoming, Schuylkill, Sullivan and 2 more | 6 hr |
| Feb 2, 6:45 PM EST | Winter Weather Advisory | PBZ | Fayette, Westmoreland | 9 hr |
| Feb 2, 6:57 PM EST | Winter Weather Advisory | CTP | Cambria, Somerset | 12 hr |
| Feb 6, 3:14 AM EST | Winter Weather Advisory | CTP | Adams, Cumberland, Dauphin, Franklin, Fulton, Lancaster and 4 more | 33 hr |
| Feb 6, 3:23 AM EST | Winter Weather Advisory | PHI | Berks, Bucks, Carbon, Lehigh, Monroe, Montgomery and 1 more | 36 hr |
| Feb 6, 2:43 PM EST | Winter Weather Advisory | BGM | Lackawanna, Luzerne, Pike, Wayne | 24 hr |
| Feb 8, 1:45 PM EST | Winter Weather Advisory | PBZ | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 4 more | 21 hr |
| Feb 8, 1:58 PM EST | Winter Weather Advisory | CTP | Cambria, Centre, Clearfield, Clinton, Columbia, Lycoming and 6 more | 22 hr |
| Feb 8, 2:06 PM EST | Winter Weather Advisory | BGM | Lackawanna, Luzerne, Pike, Susquehanna, Wayne, Wyoming | 25 hr |
| Feb 8, 3:00 PM EST | Winter Weather Advisory | PHI | Berks, Bucks, Carbon, Lehigh, Monroe, Northampton | 24 hr |
| Feb 10, 3:31 AM EST | Winter Weather Advisory | PBZ | Fayette, Greene, Westmoreland | 29 hr |
| Feb 10, 3:47 AM EST | Winter Weather Advisory | PHI | Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 1 more | 32 hr |
| Feb 10, 4:33 AM EST | Winter Weather Advisory | CTP | Adams, Bedford, Blair, Cambria, Centre, Clearfield and 16 more | 28 hr |
| Feb 12, 3:21 PM EST | Winter Weather Advisory | PHI | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 43 hr |
| Feb 13, 8:11 AM EST | Winter Weather Advisory | PBZ | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 5 more | 24 hr |
| Feb 13, 2:53 PM EST | Winter Weather Advisory | CTP | Adams, Bedford, Blair, Cambria, Cameron, Centre and 23 more | 17 hr |
| Feb 14, 1:49 PM EST | Winter Weather Advisory | PBZ | Fayette | 40 hr |
| Feb 14, 3:15 PM EST | Winter Weather Advisory | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 39 hr |
| Feb 14, 3:46 PM EST | Winter Weather Advisory | CTP | Adams, Bedford, Blair, Cambria, Cameron, Centre and 23 more | 38 hr |
| Feb 15, 2:55 AM EST | Winter Weather Advisory | BGM | Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more | 30 hr |
| Feb 16, 6:18 PM EST | Winter Weather Advisory | CLE | Erie | 7 hr |
| Feb 17, 1:21 PM EST | Winter Weather Advisory | PBZ | Allegheny, Fayette, Greene, Washington, Westmoreland | 36 hr |
| Feb 17, 2:39 PM EST | Winter Weather Advisory | CTP | Bedford, Blair, Cambria, Centre, Clearfield, Clinton and 12 more | 22 hr |
| Feb 17, 3:12 PM EST | Winter Weather Advisory | BGM | Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more | 45 hr |
| Feb 17, 3:43 PM EST | Winter Weather Advisory | PHI | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 47 hr |
| Feb 18, 12:25 PM EST | Winter Weather Advisory | CTP | Adams, Centre, Clinton, Columbia, Cumberland, Dauphin and 17 more | 22 hr |
| Feb 19, 11:48 AM EST | Winter Weather Advisory | BGM | Pike, Wayne | 3 hr |
| Feb 21, 2:29 PM EST | Winter Weather Advisory | CTP | Adams, Bedford, Blair, Cambria, Cameron, Centre and 27 more | 23 hr |
| Feb 21, 2:47 PM EST | Winter Weather Advisory | PHI | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 26 hr |
| Feb 21, 3:25 PM EST | Winter Weather Advisory | BGM | Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more | 31 hr |
| Feb 21, 3:30 PM EST | Winter Weather Advisory | PBZ | Fayette, Forest, Jefferson, Westmoreland | 20 hr |
| Feb 26, 9:48 PM EST | Winter Weather Advisory | PHI | Carbon, Monroe | 11 hr |
| Mar 15, 2:36 PM EDT | Winter Weather Advisory | CTP | Cambria, Cameron, Centre, Clearfield, Clinton, Elk and 4 more | 20 hr |
| Mar 15, 2:41 PM EDT | Winter Weather Advisory | PBZ | Fayette, Forest, Jefferson, Westmoreland | 19 hr |
| Mar 15, 10:16 PM EDT | Winter Weather Advisory | CLE | Crawford, Erie | 8 hr |
| Mar 31, 3:09 AM EDT | Winter Weather Advisory | CTP | Lycoming, Potter, Sullivan, Tioga | 29 hr |
| Mar 31, 4:02 AM EDT | Winter Weather Advisory | BGM | Bradford, Susquehanna | 30 hr |
| Apr 20, 3:54 AM EDT | Winter Weather Advisory | CLE | Erie | 30 hr |
| Nov 2, 2:23 PM EDT | Winter Weather Advisory | CTP | McKean, Warren | 19 hr |
| Nov 2, 2:34 PM EDT | Winter Weather Advisory | CLE | Erie | 18 hr |
| Nov 13, 3:15 PM EST | Winter Weather Advisory | CLE | Erie | 12 hr |
| Nov 15, 4:47 PM EST | Winter Weather Advisory | CTP | McKean, Warren | 11 hr |
| Nov 18, 3:07 AM EST | Winter Weather Advisory | CLE | Crawford, Erie | 30 hr |
| Nov 18, 3:29 AM EST | Winter Weather Advisory | CTP | McKean, Warren | 31 hr |
| Nov 22, 4:54 AM EST | Winter Weather Advisory | CTP | McKean, Warren | 33 hr |
| Nov 25, 1:34 PM EST | Winter Weather Advisory | CLE | Crawford, Erie | 38 hr |
| Nov 25, 2:53 PM EST | Winter Weather Advisory | CTP | McKean, Warren | 35 hr |
| Nov 27, 2:26 PM EST | Winter Weather Advisory | CTP | McKean, Warren | 38 hr |
| Nov 27, 2:33 PM EST | Winter Weather Advisory | CLE | Crawford, Erie | 40 hr |
| Dec 6, 8:44 PM EST | Winter Weather Advisory | CLE | Crawford, Erie | 10 hr |
| Dec 17, 2:21 PM EST | Winter Weather Advisory | CTP | Cameron, Clinton, Elk, Lycoming, McKean, Potter and 3 more | 22 hr |
| Dec 17, 3:05 PM EST | Winter Weather Advisory | BGM | Bradford | 31 hr |
| Dec 24, 3:16 AM EST | Winter Weather Advisory | BGM | Pike, Wayne | 34 hr |
| Dec 24, 9:37 AM EST | Winter Weather Advisory | PHI | Carbon, Monroe | 23 hr |
| Dec 26, 2:55 PM EST | Winter Weather Advisory | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 40 hr |
| Dec 26, 2:58 PM EST | Winter Weather Advisory | CTP | Bedford, Blair, Cambria, Cameron, Centre, Clearfield and 21 more | 33 hr |
| Dec 26, 4:56 PM EST | Winter Weather Advisory | BGM | Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more | 38 hr |
| Dec 26, 5:43 PM EST | Winter Weather Advisory | PBZ | Armstrong, Butler, Clarion, Forest, Jefferson, Lawrence and 3 more | 19 hr |
| Dec 28, 12:48 PM EST | Winter Weather Advisory | CTP | Blair, Cameron, Centre, Clearfield, Clinton, Columbia and 10 more | 14 hr |
| Dec 28, 2:17 PM EST | Winter Weather Advisory | BGM | Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more | 17 hr |
| Dec 28, 2:48 PM EST | Winter Weather Advisory | PHI | Carbon, Monroe | 12 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- McKean County14
- Warren County14
- Erie County14
- Fayette County13
- Westmoreland County13
- Cambria County13
- Lycoming County13
- Sullivan County13
- Centre County12
- Clearfield County12
- Clinton County12
- Pike County11
- Wayne County11
- Carbon County11
- Monroe County11
- Schuylkill County11
- Somerset County11
- Tioga County11
- Union County11
- Cameron County10
- Columbia County10
- Dauphin County10
- Elk County10
- Huntingdon County10
- Lebanon County10
- Mifflin County10
- Northumberland County10
- Potter County10
- Snyder County10
- Jefferson County9
- Bradford County9
- Lackawanna County9
- Luzerne County9
- Susquehanna County9
- Berks County9
- Bucks County9
- Lehigh County9
- Blair County9
- Fulton County9
- Juniata County9
26 more counties
- Lancaster County9
- Montour County9
- Perry County9
- York County9
- Crawford County9
- Wyoming County8
- Montgomery County8
- Northampton County8
- Adams County8
- Cumberland County8
- Franklin County8
- Clarion County7
- Forest County7
- Chester County7
- Bedford County7
- Armstrong County6
- Butler County6
- Delaware County6
- Philadelphia County6
- Greene County5
- Lawrence County4
- Venango County4
- Beaver County4
- Allegheny County4
- Washington County4
- Mercer County3
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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.