Alert archive / Pennsylvania / Mesoscale Discussions / 2018
Mesoscale Discussions in Pennsylvania, February 2018
5 mesoscale discussions in February 2018. 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 2018. Tap one for its archive.
- Mesoscale Discussions
- 5
- Busiest day
- February 7, 20182 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 4, 6:32 PM EST | Mesoscale Discussion | SPC | Adams, Berks, Carbon, Columbia, Cumberland, Dauphin and 16 more | 4 hr |
| Feb 7, 5:28 AM EST | Mesoscale Discussion | SPC | Adams, Allegheny, Armstrong, Beaver, Bedford, Berks and 49 more | 5 hr |
| Feb 7, 11:25 AM EST | Mesoscale Discussion | SPC | Blair, Bradford, Cameron, Carbon, Centre, Clearfield and 20 more | 6 hr |
| Feb 17, 1:51 PM EST | Mesoscale Discussion | SPC | Adams, Cumberland, Dauphin, Franklin, Fulton, Juniata and 1 more | 4 hr |
| Feb 17, 6:32 PM EST | Mesoscale Discussion | SPC | Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 2 more | 4 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Adams County3
- Berks County3
- Carbon County3
- Columbia County3
- Cumberland County3
- Dauphin County3
- Lackawanna County3
- Lehigh County3
- Luzerne County3
- Montour County3
- Northumberland County3
- Perry County3
- Susquehanna County3
- Wayne County3
- Wyoming County3
- Juniata County3
- Lebanon County2
- Monroe County2
- Northampton County2
- Pike County2
- Schuylkill County2
- Blair County2
- Bradford County2
- Cameron County2
- Centre County2
- Clearfield County2
- Clinton County2
- Franklin County2
- Fulton County2
- Huntingdon County2
- Lycoming County2
- Mifflin County2
- Potter County2
- Snyder County2
- Sullivan County2
- Tioga County2
- Union County2
- Lancaster County1
- York County1
- Allegheny County1
25 more counties
- Armstrong County1
- Beaver County1
- Bedford County1
- Butler County1
- Cambria County1
- Clarion County1
- Crawford County1
- Elk County1
- Erie County1
- Fayette County1
- Forest County1
- Indiana County1
- Jefferson County1
- Lawrence County1
- McKean County1
- Mercer County1
- Somerset County1
- Venango County1
- Warren County1
- Westmoreland County1
- Bucks County1
- Chester County1
- Delaware County1
- Montgomery County1
- Philadelphia County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20172019
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.