Alert archive / Pennsylvania / Mesoscale Discussions / 2017

Mesoscale Discussions in Pennsylvania, August 2017

24 mesoscale discussions in August 2017. 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 2017. Tap one for its archive.

Mesoscale Discussions
24
Busiest day
August 22, 20178 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 2, 1:30 PM EDTMesoscale DiscussionSPCAdams, Berks, Bradford, Bucks, Carbon, Chester and 31 more2 hr
Aug 3, 6:28 PM EDTMesoscale DiscussionSPCAdams, Berks, Bucks, Carbon, Chester, Cumberland and 14 more62 min
Aug 4, 11:38 AM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 14 more2 hr
Aug 4, 3:46 PM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Blair, Bradford, Butler and 34 more119 min
Aug 4, 7:41 PM EDTMesoscale DiscussionSPCAdams, Allegheny, Armstrong, Bedford, Blair, Bradford and 43 more2 hr
Aug 11, 3:48 PM EDTMesoscale DiscussionSPCAdams, Bedford, Blair, Centre, Clinton, Columbia and 20 more87 min
Aug 12, 1:41 PM EDTMesoscale DiscussionSPCAdams, Bedford, Blair, Bradford, Cambria, Cameron and 27 more2 hr
Aug 12, 5:17 PM EDTMesoscale DiscussionSPCAdams, Berks, Bradford, Carbon, Chester, Columbia and 26 more88 min
Aug 17, 8:00 PM EDTMesoscale DiscussionSPCCrawford, Lawrence, Mercer, Venango90 min
Aug 18, 1:54 PM EDTMesoscale DiscussionSPCAdams, Berks, Bucks, Carbon, Chester, Columbia and 16 more2 hr
Aug 18, 4:34 PM EDTMesoscale DiscussionSPCBerks, Bucks, Carbon, Chester, Delaware, Lackawanna and 12 more86 min
Aug 19, 2:13 PM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Bedford, Blair, Butler and 21 more3 hr
Aug 19, 4:43 PM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Bedford, Blair, Butler and 26 more2 hr
Aug 19, 8:16 PM EDTMesoscale DiscussionSPCAdams, Berks, Bradford, Carbon, Columbia, Cumberland and 18 more59 min
Aug 21, 2:53 PM EDTMesoscale DiscussionSPCAdams, Centre, Clinton, Columbia, Cumberland, Dauphin and 16 more2 hr
Aug 22, 11:54 AM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Butler, Clarion, Greene and 5 more66 min
Aug 22, 11:55 AM EDTMesoscale DiscussionSPCBradford, Cameron, Clinton, Lycoming, McKean, Potter and 4 more3 hr
Aug 22, 2:44 PM EDTMesoscale DiscussionSPCBradford, Potter, Tioga2 hr
Aug 22, 2:44 PM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Blair, Butler, Cambria and 13 more91 min
Aug 22, 3:08 PM EDTMesoscale DiscussionSPCAdams, Berks, Bucks, Carbon, Chester, Columbia and 18 more67 min
Aug 22, 4:39 PM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Blair, Butler, Cambria and 13 more66 min
Aug 22, 4:48 PM EDTMesoscale DiscussionSPCBradford, Lycoming, McKean, Potter, Sullivan, Tioga87 min
Aug 22, 7:07 PM EDTMesoscale DiscussionSPCAdams, Berks, Bucks, Carbon, Chester, Columbia and 24 more113 min
Aug 22, 10:53 PM EDTMesoscale DiscussionSPCBucks, Chester, Delaware, Montgomery, Philadelphia97 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 archive20162018

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.