Alert archive / Pennsylvania / Mesoscale Discussions / 2020

Mesoscale Discussions in Pennsylvania, August 2020

26 mesoscale discussions in August 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 August 2020. Tap one for its archive.

Mesoscale Discussions
26
Busiest day
August 25, 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.

IssuedProductOfficeCountiesLasted
Aug 1, 2:19 PM EDTMesoscale DiscussionSPCGreene, Washington56 min
Aug 1, 4:00 PM EDTMesoscale DiscussionSPCFranklin, Fulton2 hr
Aug 1, 7:05 PM EDTMesoscale DiscussionSPCAdams, Franklin, Fulton115 min
Aug 2, 6:53 AM EDTMesoscale DiscussionSPCLehigh, Northampton3 hr
Aug 2, 2:00 PM EDTMesoscale DiscussionSPCCarbon, Columbia, Lackawanna, Luzerne, Monroe, Northampton and 6 more2 hr
Aug 2, 6:45 PM EDTMesoscale DiscussionSPCMonroe, Pike, Wayne2 hr
Aug 4, 6:45 AM EDTMesoscale DiscussionSPCBucks, Delaware, Montgomery, Philadelphia3 hr
Aug 4, 8:59 AM EDTMesoscale DiscussionSPCPhiladelphia91 min
Aug 4, 11:13 AM EDTMesoscale DiscussionSPCBucks, Philadelphia92 min
Aug 7, 1:30 PM EDTMesoscale DiscussionSPCAdams, Berks, Chester, Cumberland, Dauphin, Delaware and 11 more3 hr
Aug 12, 1:15 PM EDTMesoscale DiscussionSPCBucks, Chester, Delaware, Lancaster, Montgomery, Philadelphia and 1 more2 hr
Aug 23, 3:57 PM EDTMesoscale DiscussionSPCAdams, Cumberland, Dauphin, Franklin, Lancaster, Lebanon and 2 more2 hr
Aug 24, 12:44 PM EDTMesoscale DiscussionSPCAdams, Bedford, Berks, Bradford, Carbon, Centre and 31 more2 hr
Aug 25, 12:02 PM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Bradford, Butler, Cambria and 21 more118 min
Aug 25, 3:10 PM EDTMesoscale DiscussionSPCAdams, Bucks, Chester, Delaware, Lancaster, Montgomery and 2 more95 min
Aug 25, 4:35 PM EDTMesoscale DiscussionSPCBedford, Fayette, Greene, Somerset, Washington, Westmoreland85 min
Aug 25, 6:11 PM EDTMesoscale DiscussionSPCCarbon, Lehigh, Luzerne, Monroe, Northampton, Pike2 hr
Aug 27, 12:38 PM EDTMesoscale DiscussionSPCSusquehanna, Wayne3 hr
Aug 27, 2:14 PM EDTMesoscale DiscussionSPCAdams, Bedford, Blair, Cambria, Cumberland, Fayette and 6 more2 hr
Aug 27, 4:34 PM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Blair, Butler, Cambria and 9 more86 min
Aug 27, 6:35 PM EDTMesoscale DiscussionSPCAdams, Bedford, Berks, Blair, Bucks, Chester and 24 more115 min
Aug 28, 9:55 AM EDTMesoscale DiscussionSPCAdams, Allegheny, Armstrong, Bedford, Blair, Butler and 20 more3 hr
Aug 28, 1:32 PM EDTMesoscale DiscussionSPCBeaver88 min
Aug 28, 3:50 PM EDTMesoscale DiscussionSPCBucks, Chester, Delaware, Montgomery, Philadelphia85 min
Aug 29, 3:56 PM EDTMesoscale DiscussionSPCBerks, Bucks, Carbon, Chester, Columbia, Cumberland and 21 more2 hr
Aug 29, 6:45 PM EDTMesoscale DiscussionSPCBerks, Bucks, Lehigh, Monroe, Northampton, Pike2 hr

By county

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

26 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.