Alert archive / Pennsylvania / Mesoscale Discussions / 2012

Mesoscale Discussions in Pennsylvania, September 2012

17 mesoscale discussions in September 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 September 2012. Tap one for its archive.

Mesoscale Discussions
17
Busiest day
September 8, 20126 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
Sep 6, 1:04 PM EDTMesoscale DiscussionSPCMcKean, Potter56 min
Sep 6, 6:45 PM EDTMesoscale DiscussionSPCBradford, Columbia, Lackawanna, Luzerne, Lycoming, Montour and 8 more60 min
Sep 7, 2:16 PM EDTMesoscale DiscussionSPCBeaver, Butler, Clarion, Crawford, Erie, Forest and 4 more59 min
Sep 7, 6:38 PM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Bedford, Blair, Butler and 23 more97 min
Sep 8, 12:57 AM EDTMesoscale DiscussionSPCBeaver, Crawford, Erie, Lawrence, Mercer, Venango2 hr
Sep 8, 5:00 AM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Bedford, Blair, Butler and 20 more60 min
Sep 8, 8:42 AM EDTMesoscale DiscussionSPCBerks, Bradford, Carbon, Clinton, Columbia, Cumberland and 18 more93 min
Sep 8, 11:38 AM EDTMesoscale DiscussionSPCAdams, Bedford, Berks, Bradford, Carbon, Centre and 29 more97 min
Sep 8, 2:12 PM EDTMesoscale DiscussionSPCBerks, Bucks, Carbon, Chester, Delaware, Lancaster and 6 more93 min
Sep 8, 4:22 PM EDTMesoscale DiscussionSPCBucks, Delaware, Montgomery, Philadelphia53 min
Sep 18, 8:49 AM EDTMesoscale DiscussionSPCAdams, Cumberland, Franklin, Lancaster, York116 min
Sep 18, 11:14 AM EDTMesoscale DiscussionSPCBerks, Bucks, Carbon, Chester, Delaware, Lancaster and 6 more91 min
Sep 18, 11:19 AM EDTMesoscale DiscussionSPCAdams, Berks, Bucks, Carbon, Chester, Columbia and 23 more86 min
Sep 18, 1:56 PM EDTMesoscale DiscussionSPCAdams, Berks, Bucks, Carbon, Chester, Columbia and 23 more64 min
Sep 18, 4:21 PM EDTMesoscale DiscussionSPCBerks, Bucks, Carbon, Chester, Delaware, Lackawanna and 11 more114 min
Sep 22, 3:09 PM EDTMesoscale DiscussionSPCAdams, Berks, Bucks, Carbon, Chester, Dauphin and 14 more2 hr
Sep 22, 6:31 PM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Butler, Clarion, Elk and 7 more119 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.