Alert archive / Pennsylvania / Mesoscale Discussions / 2003

Mesoscale Discussions in Pennsylvania, May 2003

21 mesoscale discussions in May 2003. 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 2003. Tap one for its archive.

Mesoscale Discussions
21
Busiest day
May 11, 20035 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 1, 12:41 PM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Bradford, Butler, Cameron and 16 more3 hr
May 1, 4:10 PM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Butler, Cameron, Clarion and 13 more95 min
May 1, 6:02 PM EDTMesoscale DiscussionSPCAdams, Bedford, Berks, Blair, Cumberland, Dauphin and 13 more3 hr
May 2, 12:43 PM EDTMesoscale DiscussionSPCBucks, Carbon, Delaware, Lehigh, Monroe, Montgomery and 3 more2 hr
May 6, 3:49 PM EDTMesoscale DiscussionSPCCameron, Centre, Clarion, Clearfield, Clinton, Elk and 6 more116 min
May 7, 12:49 PM EDTMesoscale DiscussionSPCAdams, Armstrong, Bedford, Berks, Blair, Cambria and 29 more116 min
May 7, 3:21 PM EDTMesoscale DiscussionSPCAdams, Blair, Centre, Clearfield, Clinton, Cumberland and 10 more114 min
May 7, 6:07 PM EDTMesoscale DiscussionSPCBerks, Chester, Columbia, Dauphin, Lancaster, Lebanon and 3 more53 min
May 8, 2:48 PM EDTMesoscale DiscussionSPCAdams, Bedford, Fayette, Franklin, Fulton, Greene and 2 more117 min
May 8, 4:46 PM EDTMesoscale DiscussionSPCFayette, Somerset, Washington59 min
May 10, 4:33 AM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Bedford, Blair, Butler and 14 more87 min
May 11, 10:07 AM EDTMesoscale DiscussionSPCBradford, Cameron, Centre, Clinton, Columbia, Luzerne and 10 more113 min
May 11, 10:30 AM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Butler, Cambria, Cameron and 17 more2 hr
May 11, 12:32 PM EDTMesoscale DiscussionSPCAdams, Blair, Bradford, Centre, Clinton, Columbia and 21 more118 min
May 11, 2:52 PM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Butler, Cambria, Cameron and 18 more113 min
May 11, 3:54 PM EDTMesoscale DiscussionSPCAdams, Bedford, Blair, Bradford, Centre, Clinton and 24 more2 hr
May 23, 1:47 PM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 11 more88 min
May 23, 4:41 PM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Butler, Clarion, Fayette and 7 more94 min
May 23, 6:35 PM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Butler, Clarion, Greene and 3 more115 min
May 31, 1:06 PM EDTMesoscale DiscussionSPCAdams, Franklin114 min
May 31, 3:58 PM EDTMesoscale DiscussionSPCAdams, Chester, Delaware, Lancaster, York2 hr

By county

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

25 more counties

Nearby

Alerts in force nowTornadoes on recordThe radar archive20022004

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.