Alert archive / Pennsylvania / Mesoscale Discussions / 2012

Mesoscale Discussions in Pennsylvania, May 2012

24 mesoscale discussions in May 2012. 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 May 2012. Tap one for its archive.

Mesoscale Discussions
24
Busiest day
May 29, 20128 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
May 2, 4:56 PM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Bedford, Blair, Butler and 20 more2 hr
May 3, 5:45 PM EDTMesoscale DiscussionSPCBradford, Cameron, Centre, Clinton, Columbia, Cumberland and 14 more60 min
May 4, 12:19 AM EDTMesoscale DiscussionSPCBradford, Tioga86 min
May 4, 1:26 PM EDTMesoscale DiscussionSPCAdams, Armstrong, Bedford, Berks, Blair, Bucks and 47 more2 hr
May 7, 1:40 PM EDTMesoscale DiscussionSPCAllegheny, Beaver, Fayette, Greene, Washington, Westmoreland2 hr
May 16, 12:27 PM EDTMesoscale DiscussionSPCBradford, Susquehanna, Wayne, Wyoming2 hr
May 16, 3:37 PM EDTMesoscale DiscussionSPCBradford, Susquehanna, Wayne, Wyoming113 min
May 26, 1:17 PM EDTMesoscale DiscussionSPCBerks, Bucks, Carbon, Columbia, Dauphin, Lancaster and 10 more88 min
May 26, 2:08 PM EDTMesoscale DiscussionSPCBerks, Bucks, Carbon, Columbia, Dauphin, Lancaster and 10 more37 min
May 26, 6:04 PM EDTMesoscale DiscussionSPCAdams, Berks, Bucks, Carbon, Columbia, Cumberland and 13 more56 min
May 27, 12:56 PM EDTMesoscale DiscussionSPCArmstrong, Beaver, Butler, Clarion, Crawford, Erie and 5 more64 min
May 27, 1:41 PM EDTMesoscale DiscussionSPCAllegheny, Bedford, Blair, Cambria, Cumberland, Fayette and 11 more64 min
May 27, 4:12 PM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Blair, Butler, Cambria and 18 more63 min
May 27, 6:34 PM EDTMesoscale DiscussionSPCAdams, Bedford, Blair, Cambria, Cumberland, Fayette and 9 more56 min
May 28, 11:19 AM EDTMesoscale DiscussionSPCLackawanna, Pike, Susquehanna, Wayne, Wyoming56 min
May 28, 2:25 PM EDTMesoscale DiscussionSPCBradford, Cameron, Crawford, Erie, Lackawanna, Luzerne and 11 more65 min
May 29, 9:48 AM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Butler, Clarion, Clearfield and 8 more87 min
May 29, 11:43 AM EDTMesoscale DiscussionSPCBradford, Lackawanna, Susquehanna, Wayne, Wyoming62 min
May 29, 12:01 PM EDTMesoscale DiscussionSPCBradford, Clinton, Lackawanna, Lycoming, Montour, Northumberland and 7 more59 min
May 29, 1:25 PM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Butler, Cambria, Cameron and 19 more65 min
May 29, 2:13 PM EDTMesoscale DiscussionSPCAdams, Bedford, Berks, Bradford, Bucks, Carbon and 35 more62 min
May 29, 3:12 PM EDTMesoscale DiscussionSPCAdams, Bedford, Berks, Blair, Bradford, Cambria and 36 more63 min
May 29, 4:40 PM EDTMesoscale DiscussionSPCAdams, Berks, Bucks, Carbon, Chester, Columbia and 22 more65 min
May 29, 7:01 PM EDTMesoscale DiscussionSPCBucks, Philadelphia89 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 archive20112013

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.