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.

IssuedProductOfficeCountiesLasted
Aug 1, 3:15 PM EDTMesoscale DiscussionSPCAdams, Bedford, Berks, Bradford, Carbon, Columbia and 23 more3 hr
Aug 2, 11:46 AM EDTMesoscale DiscussionSPCBerks, Bucks, Chester, Delaware, Lancaster, Lehigh and 4 more119 min
Aug 6, 3:12 PM EDTMesoscale DiscussionSPCCrawford, Erie3 hr
Aug 7, 1:03 PM EDTMesoscale DiscussionSPCPike, Susquehanna, Wayne117 min
Aug 13, 1:57 PM EDTMesoscale DiscussionSPCAllegheny, Bedford, Fayette, Greene, Somerset, Westmoreland3 hr
Aug 17, 2:42 PM EDTMesoscale DiscussionSPCBradford, Carbon, Columbia, Dauphin, Juniata, Lackawanna and 15 more3 hr
Aug 17, 7:31 PM EDTMesoscale DiscussionSPCBucks, Delaware, Montgomery, Philadelphia89 min
Aug 21, 12:45 PM EDTMesoscale DiscussionSPCFayette, Greene, Washington, Westmoreland3 hr
Aug 21, 2:16 PM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Bedford, Blair, Cambria, Clarion and 7 more119 min
Aug 21, 4:56 PM EDTMesoscale DiscussionSPCAdams, Armstrong, Bedford, Blair, Cambria, Centre and 16 more2 hr
Aug 21, 7:06 PM EDTMesoscale DiscussionSPCAdams, Berks, Chester, Cumberland, Dauphin, Franklin and 5 more84 min
Aug 29, 2:55 PM EDTMesoscale DiscussionSPCBeaver, Crawford, Lawrence, Mercer, Venango3 hr

By county

Every county with at least one alert. A county page lists each alert that covered it.

18 more counties

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.