Alert archive / Pennsylvania / Mesoscale Discussions / 2012

Mesoscale Discussions in Pennsylvania, August 2012

12 mesoscale discussions in August 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 August 2012. Tap one for its archive.

Mesoscale Discussions
12
Busiest day
August 5, 20124 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 4, 10:46 PM EDTMesoscale DiscussionSPCMercer119 min
Aug 5, 12:06 PM EDTMesoscale DiscussionSPCCameron, Clarion, Clearfield, Crawford, Elk, Forest and 5 more84 min
Aug 5, 2:49 PM EDTMesoscale DiscussionSPCAdams, Berks, Bradford, Bucks, Carbon, Centre and 34 more86 min
Aug 5, 6:38 PM EDTMesoscale DiscussionSPCPhiladelphia2 hr
Aug 9, 12:46 PM EDTMesoscale DiscussionSPCBradford, Cameron, Lycoming, Potter, Sullivan, Susquehanna and 2 more89 min
Aug 9, 4:18 PM EDTMesoscale DiscussionSPCAllegheny, Beaver, Greene, Washington57 min
Aug 10, 8:21 AM EDTMesoscale DiscussionSPCBucks, Chester, Delaware, Lehigh, Monroe, Montgomery and 4 more2 hr
Aug 10, 12:49 PM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Butler, Cameron, Clarion and 16 more86 min
Aug 10, 3:31 PM EDTMesoscale DiscussionSPCAdams, Cumberland, Franklin, Fulton, Huntingdon, Juniata and 2 more89 min
Aug 10, 7:31 PM EDTMesoscale DiscussionSPCAdams, Berks, Chester, Cumberland, Delaware, Lancaster and 2 more119 min
Aug 14, 2:07 PM EDTMesoscale DiscussionSPCAdams, Cumberland, Franklin, Fulton, York113 min
Aug 14, 9:57 PM EDTMesoscale DiscussionSPCAdams, Berks, Carbon, Chester, Columbia, Cumberland and 16 more2 hr

By county

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

23 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.