Alert archive / Pennsylvania / Mesoscale Discussions / 2021
Mesoscale Discussions in Pennsylvania, February 2021
9 mesoscale discussions in February 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 mesoscale discussions reaches back to 2003.
Mesoscale Discussions by county
Each county as a circle sized by its count in February 2021. Tap one for its archive.
- Mesoscale Discussions
- 9
- Busiest day
- February 1, 20212 mesoscale discussions
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 |
|---|---|---|---|---|
| Feb 1, 7:13 AM EST | Mesoscale Discussion | SPC | Carbon, Lehigh, Monroe, Northampton, Pike | 6 hr |
| Feb 1, 1:43 PM EST | Mesoscale Discussion | SPC | Bucks, Chester, Delaware, Lehigh, Montgomery, Northampton and 1 more | 6 hr |
| Feb 1, 7:27 PM EST | Mesoscale Discussion | SPC | Pike | 6 hr |
| Feb 13, 10:02 AM EST | Mesoscale Discussion | SPC | Delaware, Philadelphia | 6 hr |
| Feb 15, 2:44 PM EST | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Bedford, Blair, Butler and 18 more | 6 hr |
| Feb 15, 8:06 PM EST | Mesoscale Discussion | SPC | Erie, Warren | 5 hr |
| Feb 15, 9:16 PM EST | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Blair, Bradford, Butler and 34 more | 5 hr |
| Feb 18, 9:47 AM EST | Mesoscale Discussion | SPC | Berks, Bucks, Chester, Delaware, Lancaster, Lehigh and 4 more | 4 hr |
| Feb 22, 7:48 AM EST | Mesoscale Discussion | SPC | Adams, Berks, Bucks, Carbon, Chester, Columbia and 24 more | 4 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Lehigh County4
- Northampton County4
- Pike County4
- Carbon County3
- Monroe County3
- Bucks County3
- Chester County3
- Delaware County3
- Montgomery County3
- Philadelphia County3
- Juniata County3
- Mifflin County3
- Perry County3
- Allegheny County2
- Armstrong County2
- Beaver County2
- Blair County2
- Butler County2
- Cambria County2
- Centre County2
- Clarion County2
- Clearfield County2
- Franklin County2
- Huntingdon County2
- Indiana County2
- Jefferson County2
- Westmoreland County2
- Columbia County2
- Dauphin County2
- Lackawanna County2
- Luzerne County2
- Lycoming County2
- Montour County2
- Northumberland County2
- Schuylkill County2
- Snyder County2
- Sullivan County2
- Union County2
- Wyoming County2
- Berks County2
23 more counties
- Lancaster County2
- York County2
- Bedford County1
- Fayette County1
- Fulton County1
- Greene County1
- Lawrence County1
- Somerset County1
- Washington County1
- Erie County1
- Warren County1
- Bradford County1
- Cameron County1
- Clinton County1
- Elk County1
- Forest County1
- Potter County1
- Susquehanna County1
- Tioga County1
- Wayne County1
- Adams County1
- Cumberland County1
- Lebanon County1
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.