Alert archive / Pennsylvania / Mesoscale Discussions / 2020
Mesoscale Discussions in Pennsylvania, May 2020
9 mesoscale discussions in May 2020. 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 May 2020. Tap one for its archive.
- Mesoscale Discussions
- 9
- Busiest day
- May 15, 20204 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 |
|---|---|---|---|---|
| May 15, 1:52 PM EDT | Mesoscale Discussion | SPC | Butler, Cameron, Clarion, Crawford, Elk, Erie and 8 more | 83 min |
| May 15, 2:59 PM EDT | Mesoscale Discussion | SPC | Susquehanna, Wayne, Wyoming | 91 min |
| May 15, 4:58 PM EDT | Mesoscale Discussion | SPC | Susquehanna | 92 min |
| May 15, 7:47 PM EDT | Mesoscale Discussion | SPC | Bradford, Cameron, Clinton, Elk, Forest, Jefferson and 8 more | 58 min |
| May 29, 10:47 AM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Cameron, Clarion and 14 more | 118 min |
| May 29, 12:27 PM EDT | Mesoscale Discussion | SPC | Adams, Berks, Bucks, Carbon, Chester, Columbia and 27 more | 63 min |
| May 29, 3:03 PM EDT | Mesoscale Discussion | SPC | Berks, Carbon, Lancaster, Lehigh, Monroe, Northampton and 2 more | 87 min |
| May 29, 4:54 PM EDT | Mesoscale Discussion | SPC | Cameron, Clearfield, Clinton, Elk, Jefferson, McKean and 2 more | 2 hr |
| May 29, 8:01 PM EDT | Mesoscale Discussion | SPC | Adams, Berks, Bradford, Bucks, Carbon, Chester and 29 more | 119 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Susquehanna County5
- Cameron County4
- Elk County4
- Jefferson County4
- McKean County4
- Potter County4
- Wayne County4
- Wyoming County4
- Forest County3
- Sullivan County3
- Tioga County3
- Berks County3
- Carbon County3
- Lancaster County3
- Lehigh County3
- Monroe County3
- Northampton County3
- Pike County3
- York County3
- Butler County2
- Clarion County2
- Crawford County2
- Erie County2
- Lawrence County2
- Mercer County2
- Venango County2
- Warren County2
- Bradford County2
- Clinton County2
- Lycoming County2
- Adams County2
- Bucks County2
- Chester County2
- Columbia County2
- Cumberland County2
- Dauphin County2
- Delaware County2
- Franklin County2
- Juniata County2
- Lackawanna County2
18 more counties
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.