Alert archive / Illinois / Saint Clair County / Mesoscale Discussions

Mesoscale Discussions in Saint Clair County, Illinois, 2026

32 mesoscale discussions in 2026. An alert counts here when it covered this county. The archive of mesoscale discussions reaches back to 2003.

Saint Clair County and its neighbors

Each county as a circle sized by its count in 2026. Tap one for its archive.

Mesoscale Discussions
32
Busiest month
April7 mesoscale discussions
Busiest day
February 19, 20263 mesoscale discussions

Over time

By month

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.

IssuedProductOfficeLasted
Jan 8, 3:14 PM CSTMesoscale DiscussionSPC2 hr
Jan 8, 7:50 PM CSTMesoscale DiscussionSPC55 min
Feb 19, 10:44 AM CSTMesoscale DiscussionSPC91 min
Feb 19, 11:34 AM CSTMesoscale DiscussionSPC116 min
Feb 19, 3:06 PM CSTMesoscale DiscussionSPC84 min
Mar 7, 2:44 AM CSTMesoscale DiscussionSPC2 hr
Mar 11, 4:23 AM CDTMesoscale DiscussionSPC2 hr
Mar 15, 12:23 PM CDTMesoscale DiscussionSPC2 hr
Apr 2, 5:39 PM CDTMesoscale DiscussionSPC2 hr
Apr 17, 3:04 PM CDTMesoscale DiscussionSPC56 min
Apr 17, 8:39 PM CDTMesoscale DiscussionSPC2 hr
Apr 27, 7:36 AM CDTMesoscale DiscussionSPC84 min
Apr 27, 11:56 AM CDTMesoscale DiscussionSPC2 hr
Apr 27, 3:55 PM CDTMesoscale DiscussionSPC2 hr
Apr 27, 8:08 PM CDTMesoscale DiscussionSPC97 min
May 3, 8:49 PM CDTMesoscale DiscussionSPC116 min
May 4, 6:29 PM CDTMesoscale DiscussionSPC3 hr
Jun 1, 4:02 AM CDTMesoscale DiscussionSPC118 min
Jun 1, 6:01 AM CDTMesoscale DiscussionSPC2 hr
Jun 9, 12:42 PM CDTMesoscale DiscussionSPC93 min
Jun 21, 10:06 AM CDTMesoscale DiscussionSPC114 min
Jun 21, 6:53 PM CDTMesoscale DiscussionSPC97 min
Jun 25, 1:11 PM CDTMesoscale DiscussionSPC2 hr
Jul 4, 2:36 PM CDTMesoscale DiscussionSPC114 min
Jul 4, 4:56 PM CDTMesoscale DiscussionSPC2 hr
Jul 10, 4:46 PM CDTMesoscale DiscussionSPC119 min
Jul 10, 7:26 PM CDTMesoscale DiscussionSPC94 min
Aug 12, 4:33 PM CDTMesoscale DiscussionSPC117 min
Aug 16, 3:11 PM CDTMesoscale DiscussionSPC2 hr
Aug 16, 8:27 PM CDTMesoscale DiscussionSPC93 min
Aug 19, 8:52 PM CDTMesoscale DiscussionSPC83 min
Sep 20, 6:38 PM CDTMesoscale DiscussionSPC2 hr

The busiest days

Days with the most alerts issued, by UTC date.

  1. February 19, 20263mesoscale discussions
  2. April 27, 20263mesoscale discussions
  3. May 4, 20262mesoscale discussions
  4. June 1, 20262mesoscale discussions
  5. June 21, 20262mesoscale discussions
  6. July 4, 20262mesoscale discussions
  7. January 8, 20261mesoscale discussions
  8. January 9, 20261mesoscale discussions
  9. March 7, 20261mesoscale discussions
  10. March 11, 20261mesoscale discussions

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive2025

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.