Alert archive / Pennsylvania / Mesoscale Discussions / 2018
Mesoscale Discussions in Pennsylvania, August 2018
12 mesoscale discussions in August 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 August 2018. Tap one for its archive.
- Mesoscale Discussions
- 12
- Busiest day
- August 21, 20184 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 |
|---|---|---|---|---|
| Aug 1, 3:15 PM EDT | Mesoscale Discussion | SPC | Adams, Bedford, Berks, Bradford, Carbon, Columbia and 23 more | 3 hr |
| Aug 2, 11:46 AM EDT | Mesoscale Discussion | SPC | Berks, Bucks, Chester, Delaware, Lancaster, Lehigh and 4 more | 119 min |
| Aug 6, 3:12 PM EDT | Mesoscale Discussion | SPC | Crawford, Erie | 3 hr |
| Aug 7, 1:03 PM EDT | Mesoscale Discussion | SPC | Pike, Susquehanna, Wayne | 117 min |
| Aug 13, 1:57 PM EDT | Mesoscale Discussion | SPC | Allegheny, Bedford, Fayette, Greene, Somerset, Westmoreland | 3 hr |
| Aug 17, 2:42 PM EDT | Mesoscale Discussion | SPC | Bradford, Carbon, Columbia, Dauphin, Juniata, Lackawanna and 15 more | 3 hr |
| Aug 17, 7:31 PM EDT | Mesoscale Discussion | SPC | Bucks, Delaware, Montgomery, Philadelphia | 89 min |
| Aug 21, 12:45 PM EDT | Mesoscale Discussion | SPC | Fayette, Greene, Washington, Westmoreland | 3 hr |
| Aug 21, 2:16 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Bedford, Blair, Cambria, Clarion and 7 more | 119 min |
| Aug 21, 4:56 PM EDT | Mesoscale Discussion | SPC | Adams, Armstrong, Bedford, Blair, Cambria, Centre and 16 more | 2 hr |
| Aug 21, 7:06 PM EDT | Mesoscale Discussion | SPC | Adams, Berks, Chester, Cumberland, Dauphin, Franklin and 5 more | 84 min |
| Aug 29, 2:55 PM EDT | Mesoscale Discussion | SPC | Beaver, Crawford, Lawrence, Mercer, Venango | 3 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Bedford County4
- Dauphin County4
- Juniata County4
- York County4
- Fayette County4
- Westmoreland County4
- Adams County3
- Berks County3
- Cumberland County3
- Franklin County3
- Lancaster County3
- Perry County3
- Snyder County3
- Susquehanna County3
- Greene County3
- Somerset County3
- Bradford County2
- Carbon County2
- Columbia County2
- Fulton County2
- Huntingdon County2
- Lackawanna County2
- Lebanon County2
- Luzerne County2
- Lycoming County2
- Mifflin County2
- Monroe County2
- Montour County2
- Northumberland County2
- Schuylkill County2
- Sullivan County2
- Union County2
- Wyoming County2
- Bucks County2
- Chester County2
- Delaware County2
- Lehigh County2
- Montgomery County2
- Northampton County2
- Philadelphia County2
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.