Alert archive / Illinois / Mesoscale Discussions / 2023

Mesoscale Discussions in Illinois, August 2023

29 mesoscale discussions in August 2023. 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 2023. Tap one for its archive.

Mesoscale Discussions
29
Busiest day
August 12, 20234 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
Aug 2, 5:30 PM CDTMesoscale DiscussionSPCMonroe, Randolph3 hr
Aug 2, 11:06 PM CDTMesoscale DiscussionSPCAlexander, Pulaski114 min
Aug 3, 7:16 AM CDTMesoscale DiscussionSPCAlexander, Pulaski2 hr
Aug 5, 1:45 PM CDTMesoscale DiscussionSPCChampaign, Clark, Coles, Crawford, Cumberland, Douglas and 5 more3 hr
Aug 5, 6:11 PM CDTMesoscale DiscussionSPCAlexander, Gallatin, Hamilton, Hardin, Johnson, Massac and 6 more2 hr
Aug 6, 1:26 PM CDTMesoscale DiscussionSPCAdams, Brown, Cass, Hancock, Morgan, Pike and 2 more3 hr
Aug 6, 6:01 PM CDTMesoscale DiscussionSPCAdams, Bond, Brown, Calhoun, Cass, Champaign and 41 more119 min
Aug 6, 7:56 PM CDTMesoscale DiscussionSPCBond, Clark, Clay, Coles, Crawford, Cumberland and 7 more2 hr
Aug 6, 11:07 PM CDTMesoscale DiscussionSPCEdwards, Hamilton, Wabash, Wayne, White113 min
Aug 7, 1:15 AM CDTMesoscale DiscussionSPCFranklin, Gallatin, Hamilton, Hardin, Johnson, Massac and 4 more2 hr
Aug 9, 12:18 PM CDTMesoscale DiscussionSPCBond, Cass, Champaign, Christian, Clark, Clay and 30 more2 hr
Aug 11, 7:46 AM CDTMesoscale DiscussionSPCAdams, Brown, Cass, Christian, DeWitt, Fulton and 16 more89 min
Aug 11, 11:09 PM CDTMesoscale DiscussionSPCAdams, Calhoun, Jersey, Pike2 hr
Aug 12, 2:56 AM CDTMesoscale DiscussionSPCBond, Brown, Calhoun, Cass, Christian, Clay and 20 more94 min
Aug 12, 5:16 AM CDTMesoscale DiscussionSPCClay, Clinton, Edwards, Franklin, Gallatin, Hamilton and 13 more89 min
Aug 12, 7:53 AM CDTMesoscale DiscussionSPCAlexander, Hardin, Massac, Pope, Pulaski97 min
Aug 13, 6:34 PM CDTMesoscale DiscussionSPCClay, Clinton, Edwards, Franklin, Gallatin, Hamilton and 10 more86 min
Aug 14, 2:38 AM CDTMesoscale DiscussionSPCAlexander, Johnson, Massac, Pulaski, Union97 min
Aug 14, 11:13 AM CDTMesoscale DiscussionSPCCook, DeKalb, DuPage, Ford, Grundy, Iroquois and 7 more2 hr
Aug 14, 2:01 PM CDTMesoscale DiscussionSPCCarroll, Jo Daviess, Whiteside119 min
Aug 14, 3:56 PM CDTMesoscale DiscussionSPCWabash, White2 hr
Aug 17, 4:41 AM CDTMesoscale DiscussionSPCBoone, Bureau, Cook, DeKalb, DuPage, Grundy and 10 more3 hr
Aug 24, 2:46 PM CDTMesoscale DiscussionSPCBoone, DeKalb, DuPage, Kane, McHenry, Winnebago119 min
Aug 25, 3:25 PM CDTMesoscale DiscussionSPCBond, Christian, Clark, Clay, Clinton, Crawford and 12 more2 hr
Aug 25, 6:55 PM CDTMesoscale DiscussionSPCCass, Christian, Clark, Clay, Coles, Crawford and 21 more3 hr
Aug 25, 10:16 PM CDTMesoscale DiscussionSPCChampaign, Clark, Coles, Crawford, Cumberland, Douglas and 10 more119 min
Aug 26, 12:41 AM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Cass, Greene, Jersey and 4 more3 hr
Aug 26, 12:53 AM CDTMesoscale DiscussionSPCEdwards, Gallatin, Hamilton, Jasper, Lawrence, Richland and 3 more3 hr
Aug 26, 2:23 PM CDTMesoscale DiscussionSPCAlexander, Hardin, Johnson, Massac, Pope, Pulaski and 3 more3 hr

By county

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

54 more counties

Nearby

Alerts in force nowTornadoes on recordThe radar archive20222024

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.