Alert archive / Pennsylvania / Mesoscale Discussions / 2021

Mesoscale Discussions in Pennsylvania, June 2021

27 mesoscale discussions in June 2021. 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 June 2021. Tap one for its archive.

Mesoscale Discussions
27
Busiest day
June 30, 20216 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
Jun 3, 1:46 PM EDTMesoscale DiscussionSPCAdams, Chester, Delaware, Lancaster, Montgomery, Philadelphia and 1 more119 min
Jun 3, 4:47 PM EDTMesoscale DiscussionSPCBerks, Bucks, Chester, Delaware, Lancaster, Lehigh and 4 more88 min
Jun 4, 2:26 PM EDTMesoscale DiscussionSPCBerks, Bucks, Chester, Delaware, Lancaster, Lehigh and 5 more94 min
Jun 4, 4:12 PM EDTMesoscale DiscussionSPCBucks, Chester, Delaware, Montgomery, Philadelphia93 min
Jun 13, 12:13 PM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Bedford, Butler, Cambria and 8 more2 hr
Jun 13, 2:38 PM EDTMesoscale DiscussionSPCBlair, Bradford, Cambria, Cameron, Centre, Clearfield and 20 more2 hr
Jun 13, 3:26 PM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 10 more94 min
Jun 13, 4:56 PM EDTMesoscale DiscussionSPCBlair, Bradford, Cambria, Cameron, Centre, Clarion and 25 more94 min
Jun 13, 7:21 PM EDTMesoscale DiscussionSPCBlair, Bradford, Cambria, Cameron, Carbon, Centre and 20 more84 min
Jun 14, 11:31 AM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Bedford, Blair, Butler and 22 more89 min
Jun 14, 1:40 PM EDTMesoscale DiscussionSPCAdams, Berks, Bucks, Carbon, Chester, Columbia and 15 more3 hr
Jun 14, 2:48 PM EDTMesoscale DiscussionSPCSusquehanna2 hr
Jun 14, 3:25 PM EDTMesoscale DiscussionSPCFayette, Greene, Somerset, Washington, Westmoreland95 min
Jun 14, 6:18 PM EDTMesoscale DiscussionSPCBerks, Bucks, Chester, Delaware, Lancaster, Lehigh and 3 more117 min
Jun 19, 7:07 PM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Butler, Lawrence, Mercer and 2 more83 min
Jun 21, 11:59 AM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 12 more91 min
Jun 21, 1:51 PM EDTMesoscale DiscussionSPCAdams, Bedford, Berks, Blair, Bradford, Bucks and 37 more114 min
Jun 21, 3:47 PM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Cambria, Cameron, Clearfield, Elk and 6 more58 min
Jun 21, 6:15 PM EDTMesoscale DiscussionSPCBucks, Chester, Delaware, Lancaster, Montgomery, Philadelphia60 min
Jun 21, 6:50 PM EDTMesoscale DiscussionSPCBradford, Carbon, Columbia, Lackawanna, Luzerne, Monroe and 6 more55 min
Jun 29, 2:33 PM EDTMesoscale DiscussionSPCButler, Cameron, Clarion, Crawford, Elk, Erie and 8 more117 min
Jun 30, 11:30 AM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Blair, Butler, Cambria and 23 more2 hr
Jun 30, 2:16 PM EDTMesoscale DiscussionSPCCarbon, Lackawanna, Luzerne, Monroe, Pike, Wayne and 1 more119 min
Jun 30, 3:29 PM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Bedford, Blair, Cambria, Centre and 16 more2 hr
Jun 30, 4:41 PM EDTMesoscale DiscussionSPCAdams, Bedford, Berks, Blair, Columbia, Cumberland and 17 more2 hr
Jun 30, 4:48 PM EDTMesoscale DiscussionSPCLackawanna, Susquehanna, Wayne87 min
Jun 30, 6:58 PM EDTMesoscale DiscussionSPCAdams, Berks, Lancaster, Lebanon, Lehigh, Northampton and 1 more92 min

By county

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

27 more counties

Nearby

Alerts in force nowTornadoes on recordThe radar archive20202022

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.