Alert archive / Pennsylvania / Mesoscale Discussions / 2017
Mesoscale Discussions in Pennsylvania, April 2017
6 mesoscale discussions in April 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 April 2017. Tap one for its archive.
- Mesoscale Discussions
- 6
- Busiest day
- April 6, 20172 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 |
|---|---|---|---|---|
| Apr 6, 12:18 PM EDT | Mesoscale Discussion | SPC | Chester, Delaware, Philadelphia | 57 min |
| Apr 6, 3:12 PM EDT | Mesoscale Discussion | SPC | Bucks, Chester, Delaware, Montgomery, Philadelphia | 63 min |
| Apr 16, 2:15 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Blair, Bradford, Butler and 31 more | 3 hr |
| Apr 20, 2:40 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Bedford, Blair, Butler and 20 more | 65 min |
| Apr 30, 2:58 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 10 more | 2 hr |
| Apr 30, 3:25 PM EDT | Mesoscale Discussion | SPC | Adams, Bedford, Franklin, Fulton | 95 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Allegheny County3
- Armstrong County3
- Beaver County3
- Butler County3
- Clarion County3
- Crawford County3
- Fayette County3
- Forest County3
- Greene County3
- Indiana County3
- Jefferson County3
- Lawrence County3
- Mercer County3
- Venango County3
- Washington County3
- Westmoreland County3
- Chester County2
- Delaware County2
- Philadelphia County2
- Blair County2
- Cambria County2
- Clearfield County2
- Elk County2
- Huntingdon County2
- Somerset County2
- Warren County2
- Bedford County2
- Franklin County2
- Fulton County2
- Bucks County1
- Montgomery County1
- Bradford County1
- Cameron County1
- Centre County1
- Clinton County1
- Lycoming County1
- McKean County1
- Mifflin County1
- Montour County1
- Potter County1
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.