Alert archive / Pennsylvania / Mesoscale Discussions / 2017
Mesoscale Discussions in Pennsylvania, May 2017
20 mesoscale discussions in May 2017. 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 2017. Tap one for its archive.
- Mesoscale Discussions
- 20
- Busiest day
- May 1, 20174 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 1, 11:59 AM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 8 more | 2 hr |
| May 1, 1:41 PM EDT | Mesoscale Discussion | SPC | Bedford, Blair, Cambria, Cameron, Centre, Clearfield and 15 more | 64 min |
| May 1, 4:36 PM EDT | Mesoscale Discussion | SPC | Bedford, Blair, Bradford, Centre, Clinton, Franklin and 15 more | 84 min |
| May 1, 7:16 PM EDT | Mesoscale Discussion | SPC | Bucks, Chester, Delaware, Montgomery, Northampton, Philadelphia | 2 hr |
| May 5, 4:07 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Butler, Clarion, Fayette, Greene and 3 more | 113 min |
| May 5, 6:15 PM EDT | Mesoscale Discussion | SPC | Franklin | 90 min |
| May 18, 2:04 PM EDT | Mesoscale Discussion | SPC | Crawford, Elk, Erie, Forest, McKean, Potter and 3 more | 116 min |
| May 18, 4:35 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 5 more | 85 min |
| May 18, 5:36 PM EDT | Mesoscale Discussion | SPC | McKean, Potter, Tioga, Warren | 84 min |
| May 18, 7:33 PM EDT | Mesoscale Discussion | SPC | Bradford, Susquehanna | 87 min |
| May 19, 3:36 PM EDT | Mesoscale Discussion | SPC | Bucks, Chester, Delaware, Lancaster, Montgomery, Philadelphia and 1 more | 114 min |
| May 19, 5:50 PM EDT | Mesoscale Discussion | SPC | Greene, Washington | 55 min |
| May 28, 4:09 PM EDT | Mesoscale Discussion | SPC | Crawford, Erie, Lawrence, Mercer, Venango | 66 min |
| May 28, 5:46 PM EDT | Mesoscale Discussion | SPC | Armstrong, Butler, Clarion, Crawford, Erie, Forest and 5 more | 59 min |
| May 28, 7:39 PM EDT | Mesoscale Discussion | SPC | Crawford, Erie, Forest, Mercer, Venango, Warren | 96 min |
| May 30, 12:03 PM EDT | Mesoscale Discussion | SPC | Armstrong, Bedford, Blair, Cambria, Cameron, Centre and 15 more | 2 hr |
| May 30, 4:03 PM EDT | Mesoscale Discussion | SPC | Adams, Bedford, Blair, Bradford, Centre, Clinton and 13 more | 117 min |
| May 31, 12:29 PM EDT | Mesoscale Discussion | SPC | Lackawanna, Susquehanna, Wayne, Wyoming | 61 min |
| May 31, 2:05 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 7 more | 85 min |
| May 31, 7:34 PM EDT | Mesoscale Discussion | SPC | Susquehanna, Wayne | 86 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Armstrong County6
- Clarion County6
- Venango County6
- Potter County6
- Tioga County6
- Butler County5
- Jefferson County5
- Lawrence County5
- Mercer County5
- Washington County5
- Crawford County5
- Forest County5
- Warren County5
- Allegheny County4
- Fayette County4
- Greene County4
- Westmoreland County4
- Bedford County4
- Blair County4
- Centre County4
- Clinton County4
- Franklin County4
- Fulton County4
- Huntingdon County4
- McKean County4
- Susquehanna County4
- Erie County4
- Beaver County3
- Indiana County3
- Elk County3
- Juniata County3
- Lycoming County3
- Mifflin County3
- Perry County3
- Snyder County3
- Union County3
- Bradford County3
- Cambria County2
- Cameron County2
- Clearfield County2
Nearby
Alerts in force nowTornadoes on recordThe radar archive20162018
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.