Alert archive / Pennsylvania / Frost Advisories
Frost Advisories in Pennsylvania, 2021
20 frost 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 frost advisories reaches back to 2005.
Frost Advisories by county
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Frost Advisories
- 20
- Busiest month
- May15 frost advisories
- Busiest day
- May 8, 20214 frost 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 |
|---|---|---|---|---|
| Apr 22, 2:31 PM EDT | Frost Advisory | PHI | Delaware, Philadelphia | 17 hr |
| Apr 25, 4:33 PM EDT | Frost Advisory | PBZ | Allegheny, Beaver, Fayette, Greene, Washington | 15 hr |
| Apr 30, 12:59 PM EDT | Frost Advisory | PBZ | Allegheny, Beaver, Fayette, Greene, Washington, Westmoreland | 20 hr |
| May 8, 3:36 AM EDT | Frost Advisory | CLE | Crawford, Erie | 27 hr |
| May 8, 4:05 AM EDT | Frost Advisory | CTP | Bedford, Blair, Cambria, Centre, Clearfield, Clinton and 14 more | 28 hr |
| May 8, 4:09 AM EDT | Frost Advisory | PBZ | Armstrong, Butler, Clarion, Forest, Jefferson, Lawrence and 2 more | 28 hr |
| May 8, 2:53 PM EDT | Frost Advisory | BGM | Lackawanna, Luzerne | 17 hr |
| May 9, 3:10 PM EDT | Frost Advisory | CLE | Crawford, Erie | 15 hr |
| May 10, 12:29 PM EDT | Frost Advisory | CLE | Crawford, Erie | 15 hr |
| May 10, 12:44 PM EDT | Frost Advisory | PBZ | Clarion, Forest, Jefferson, Mercer, Venango | 14 hr |
| May 10, 2:31 PM EDT | Frost Advisory | BGM | Bradford, Lackawanna, Luzerne, Susquehanna, Wayne, Wyoming | 17 hr |
| May 10, 6:33 PM EDT | Frost Advisory | CTP | Cameron, Centre, Clearfield, Clinton, Elk, Lycoming and 5 more | 13 hr |
| May 11, 11:52 AM EDT | Frost Advisory | PBZ | Allegheny, Armstrong, Beaver, Butler, Fayette, Greene and 4 more | 19 hr |
| May 12, 3:03 AM EDT | Frost Advisory | BGM | Bradford, Lackawanna, Pike, Susquehanna, Wayne, Wyoming | 29 hr |
| May 12, 3:58 AM EDT | Frost Advisory | CTP | Bedford, Blair, Cambria, Cameron, Centre, Clearfield and 9 more | 28 hr |
| May 12, 11:40 AM EDT | Frost Advisory | PBZ | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 8 more | 20 hr |
| May 12, 2:15 PM EDT | Frost Advisory | CLE | Crawford, Erie | 17 hr |
| May 30, 5:29 PM EDT | Frost Advisory | CTP | Elk, McKean, Potter, Warren | 14 hr |
| Nov 2, 3:30 AM EDT | Frost Advisory | PHI | Delaware, Philadelphia | 30 hr |
| Nov 3, 1:52 PM EDT | Frost Advisory | PHI | Delaware, Philadelphia | 19 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Allegheny County4
- Beaver County4
- Fayette County4
- Greene County4
- Washington County4
- Crawford County4
- Erie County4
- Warren County4
- Mercer County4
- Delaware County3
- Philadelphia County3
- Westmoreland County3
- Centre County3
- Clearfield County3
- Clinton County3
- Lycoming County3
- Armstrong County3
- Butler County3
- Clarion County3
- Forest County3
- Jefferson County3
- Lawrence County3
- Venango County3
- Lackawanna County3
- Elk County3
- McKean County3
- Potter County3
- Bedford County2
- Blair County2
- Cambria County2
- Somerset County2
- Luzerne County2
- Bradford County2
- Susquehanna County2
- Wayne County2
- Wyoming County2
- Cameron County2
- Sullivan County2
- Tioga County2
- Columbia County1
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. Rebuilt daily.