Alert archive / Illinois / Mesoscale Discussions / 2012

Mesoscale Discussions in Illinois, May 2012

29 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
29
Busiest day
May 3, 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, Central Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeCountiesLasted
May 1, 3:39 PM CDTMesoscale DiscussionSPCChampaign, Clark, Coles, Cumberland, Douglas, Edgar and 5 more2 hr
May 2, 2:46 PM CDTMesoscale DiscussionSPCClark, Coles, Crawford, Cumberland, Edgar, Effingham and 2 more119 min
May 3, 2:53 PM CDTMesoscale DiscussionSPCBoone, Cook, DeKalb, DuPage, Kane, Lake and 3 more67 min
May 3, 3:53 PM CDTMesoscale DiscussionSPCBrown, Bureau, Cass, DeWitt, Fulton, Greene and 22 more37 min
May 3, 6:22 PM CDTMesoscale DiscussionSPCCook, DeKalb, DuPage, Kane, Kendall, Lake and 1 more23 min
May 3, 6:42 PM CDTMesoscale DiscussionSPCAdams, Brown, Cass, DeWitt, Fulton, Greene and 17 more63 min
May 3, 10:29 PM CDTMesoscale DiscussionSPCCook, DeKalb, DuPage, Ford, Grundy, Iroquois and 7 more61 min
May 3, 11:18 PM CDTMesoscale DiscussionSPCAdams, Brown, Bureau, Cass, DeWitt, Fulton and 22 more27 min
May 4, 2:16 AM CDTMesoscale DiscussionSPCAdams, Brown, Bureau, Cass, DeWitt, Ford and 25 more119 min
May 4, 11:36 AM CDTMesoscale DiscussionSPCClay, Clinton, Edwards, Franklin, Gallatin, Hamilton and 17 more84 min
May 4, 7:57 PM CDTMesoscale DiscussionSPCBond, Calhoun, Christian, Clay, Clinton, Crawford and 25 more63 min
May 4, 10:18 PM CDTMesoscale DiscussionSPCBond, Calhoun, Clinton, Franklin, Greene, Hamilton and 11 more87 min
May 5, 12:55 AM CDTMesoscale DiscussionSPCEdwards, Gallatin, Hamilton, Hardin, Saline, Wabash and 1 more95 min
May 5, 5:06 AM CDTMesoscale DiscussionSPCGallatin, Hardin, White114 min
May 6, 8:40 AM CDTMesoscale DiscussionSPCBureau, Fulton, Hancock, Henderson, Henry, Knox and 12 more65 min
May 6, 1:22 PM CDTMesoscale DiscussionSPCAdams, Brown, Cass, Fulton, Grundy, Hancock and 20 more53 min
May 6, 3:56 PM CDTMesoscale DiscussionSPCAdams, Brown, Cass, Champaign, DeWitt, Ford and 32 more64 min
May 6, 5:07 PM CDTMesoscale DiscussionSPCClark, Edgar, Iroquois, Vermilion53 min
May 15, 2:51 PM CDTMesoscale DiscussionSPCBoone, Carroll, DeKalb, DuPage, Jo Daviess, Kane and 7 more54 min
May 15, 4:58 PM CDTMesoscale DiscussionSPCBoone, Carroll, Jo Daviess, McHenry, Ogle, Stephenson and 1 more62 min
May 20, 1:17 PM CDTMesoscale DiscussionSPCBoone, Brown, Bureau, Carroll, Cass, DeKalb and 32 more118 min
May 20, 1:33 PM CDTMesoscale DiscussionSPCAlexander, Bond, Clinton, Franklin, Gallatin, Hamilton and 18 more87 min
May 20, 3:50 PM CDTMesoscale DiscussionSPCDeKalb, DuPage, Kane, McHenry85 min
May 24, 6:33 AM CDTMesoscale DiscussionSPCJo Daviess57 min
May 25, 3:09 PM CDTMesoscale DiscussionSPCHenderson, Mercer2 hr
May 26, 6:31 AM CDTMesoscale DiscussionSPCBoone, McHenry89 min
May 28, 12:00 PM CDTMesoscale DiscussionSPCJo Daviess, Stephenson60 min
May 28, 4:59 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, DeKalb, Henderson, Henry and 15 more91 min
May 31, 1:56 PM CDTMesoscale DiscussionSPCGallatin, Hardin, Massac64 min

By county

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

62 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. Rebuilt daily.