Alert archive / Illinois / Mesoscale Discussions / 2024

Mesoscale Discussions in Illinois, April 2024

30 mesoscale discussions in April 2024. 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 April 2024. Tap one for its archive.

Mesoscale Discussions
30
Busiest day
April 2, 20246 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
Mar 31, 7:38 PM CDTMesoscale DiscussionSPCClark, Coles, DeWitt, Douglas, Edgar, Logan and 3 more2 hr
Apr 1, 12:35 PM CDTMesoscale DiscussionSPCAdams, Bond, Brown, Calhoun, Cass, Champaign and 37 more115 min
Apr 1, 3:50 PM CDTMesoscale DiscussionSPCBond, Calhoun, Christian, Clark, Clinton, Coles and 19 more115 min
Apr 1, 6:45 PM CDTMesoscale DiscussionSPCBond, Calhoun, Christian, Clark, Clay, Clinton and 19 more90 min
Apr 1, 7:37 PM CDTMesoscale DiscussionSPCClark, Crawford, Edgar, Lawrence83 min
Apr 1, 11:26 PM CDTMesoscale DiscussionSPCBond, Clinton, Fayette, Madison, Marion, Monroe and 3 more94 min
Apr 2, 1:16 AM CDTMesoscale DiscussionSPCClay, Clinton, Crawford, Edwards, Franklin, Gallatin and 19 more89 min
Apr 2, 10:58 AM CDTMesoscale DiscussionSPCCrawford, Edwards, Lawrence, Richland, Wabash, Wayne and 1 more3 hr
Apr 2, 11:48 AM CDTMesoscale DiscussionSPCAlexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 9 more117 min
Apr 2, 2:28 PM CDTMesoscale DiscussionSPCHardin92 min
Apr 7, 2:05 PM CDTMesoscale DiscussionSPCHancock, Henderson, Mercer2 hr
Apr 7, 2:12 PM CDTMesoscale DiscussionSPCAlexander, Clinton, Franklin, Hamilton, Jackson, Jefferson and 12 more3 hr
Apr 15, 3:45 PM CDTMesoscale DiscussionSPCClinton, Monroe, Perry, Randolph, Saint Clair, Washington90 min
Apr 16, 11:04 AM CDTMesoscale DiscussionSPCAdams, Hancock2 hr
Apr 16, 1:56 PM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Cass, Fulton, Greene and 17 more64 min
Apr 16, 3:40 PM CDTMesoscale DiscussionSPCBoone, Bureau, Champaign, DeKalb, DeWitt, Douglas and 23 more95 min
Apr 16, 4:47 PM CDTMesoscale DiscussionSPCCarroll, Hancock, Henderson, Henry, Jo Daviess, Mercer and 3 more88 min
Apr 16, 6:23 PM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Pike2 hr
Apr 16, 7:32 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Fulton, Henderson, Henry and 18 more88 min
Apr 17, 9:40 AM CDTMesoscale DiscussionSPCVermilion65 min
Apr 18, 12:08 PM CDTMesoscale DiscussionSPCBond, Calhoun, Christian, Clay, Clinton, Effingham and 17 more2 hr
Apr 18, 3:09 PM CDTMesoscale DiscussionSPCAlexander, Bond, Calhoun, Christian, Clay, Clinton and 28 more2 hr
Apr 18, 4:48 PM CDTMesoscale DiscussionSPCAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 14 more87 min
Apr 18, 6:12 PM CDTMesoscale DiscussionSPCBond, Champaign, Christian, Clark, Clay, Clinton and 37 more93 min
Apr 23, 2:52 PM CDTMesoscale DiscussionSPCBoone, Cook, DeKalb, DuPage, Kane, Kendall and 5 more113 min
Apr 27, 3:40 PM CDTMesoscale DiscussionSPCHenderson, Mercer, Rock Island95 min
Apr 27, 5:17 PM CDTMesoscale DiscussionSPCCarroll, Hancock, Henderson, Jo Daviess, Mercer, Rock Island and 1 more58 min
Apr 27, 7:58 PM CDTMesoscale DiscussionSPCBoone, Bureau, DeKalb, DuPage, Fulton, Grundy and 20 more62 min
Apr 27, 9:15 PM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Cass, Fulton, Greene and 15 more60 min
Apr 28, 1:54 AM CDTMesoscale DiscussionSPCCalhoun, Greene, Jersey, Macoupin, Madison66 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 archive20232025

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.