Alert archive / Illinois / Mesoscale Discussions / 2023

Mesoscale Discussions in Illinois, March 2023

19 mesoscale discussions in March 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 March 2023. Tap one for its archive.

Mesoscale Discussions
19
Busiest day
March 31, 202311 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 1, 4:56 PM CSTMesoscale DiscussionSPCHardin, Massac64 min
Mar 3, 4:01 AM CSTMesoscale DiscussionSPCAlexander, Gallatin, Hardin, Johnson, Massac, Pope and 1 more2 hr
Mar 3, 10:15 AM CSTMesoscale DiscussionSPCMassac3 hr
Mar 22, 9:55 AM CDTMesoscale DiscussionSPCBond, Calhoun, Christian, Effingham, Fayette, Greene and 10 more95 min
Mar 22, 6:31 PM CDTMesoscale DiscussionSPCAdams, Brown, Cass, DeWitt, Fulton, Logan and 7 more119 min
Mar 23, 7:22 PM CDTMesoscale DiscussionSPCAlexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 8 more113 min
Mar 25, 3:47 AM CDTMesoscale DiscussionSPCBoone, Carroll, Jo Daviess, McHenry, Ogle, Stephenson and 2 more4 hr
Mar 26, 1:41 PM CDTMesoscale DiscussionSPCBond, Champaign, Christian, Clark, Clinton, Coles and 24 more2 hr
Mar 31, 8:36 AM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Greene, Hancock, Jersey and 8 more84 min
Mar 31, 10:37 AM CDTMesoscale DiscussionSPCAdams, Brown, Cass, Fulton, Hancock, Henderson and 10 more53 min
Mar 31, 11:24 AM CDTMesoscale DiscussionSPCAdams, Brown, Bureau, Calhoun, Carroll, Cass and 27 more96 min
Mar 31, 12:53 PM CDTMesoscale DiscussionSPCAlexander, Clinton, Franklin, Jackson, Jefferson, Johnson and 10 more97 min
Mar 31, 1:32 PM CDTMesoscale DiscussionSPCAdams, Brown, Fulton, Hancock, Knox, McDonough and 5 more118 min
Mar 31, 2:07 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 26 more83 min
Mar 31, 3:17 PM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Cass, Fulton, Greene and 20 more88 min
Mar 31, 3:50 PM CDTMesoscale DiscussionSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 21 more55 min
Mar 31, 5:18 PM CDTMesoscale DiscussionSPCAdams, Brown, Bureau, Calhoun, Carroll, Cass and 27 more117 min
Mar 31, 5:30 PM CDTMesoscale DiscussionSPCAdams, Brown, Bureau, Calhoun, Carroll, Cass and 27 more2 hr
Mar 31, 6:20 PM CDTMesoscale DiscussionSPCChampaign, Clark, Coles, Cook, Crawford, Cumberland and 21 more115 min

By county

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

60 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.