Alert archive / Illinois / Cass County / Mesoscale Discussions

Mesoscale Discussions in Cass County, Illinois, 2026

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

Cass County and its neighbors

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

Mesoscale Discussions
31
Busiest month
June9 mesoscale discussions
Busiest day
June 11, 20264 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
Mar 10, 10:01 PM CDTMesoscale DiscussionSPC89 min
Mar 11, 1:59 AM CDTMesoscale DiscussionSPC91 min
Mar 26, 2:48 PM CDTMesoscale DiscussionSPC117 min
Mar 26, 7:21 PM CDTMesoscale DiscussionSPC54 min
Mar 26, 10:27 PM CDTMesoscale DiscussionSPC63 min
Mar 31, 2:44 PM CDTMesoscale DiscussionSPC3 hr
Apr 2, 5:39 PM CDTMesoscale DiscussionSPC2 hr
Apr 3, 1:26 PM CDTMesoscale DiscussionSPC2 hr
Apr 3, 4:59 PM CDTMesoscale DiscussionSPC2 hr
Apr 14, 1:55 PM CDTMesoscale DiscussionSPC2 hr
Apr 17, 3:04 PM CDTMesoscale DiscussionSPC56 min
Apr 17, 8:09 PM CDTMesoscale DiscussionSPC2 hr
May 3, 8:49 PM CDTMesoscale DiscussionSPC116 min
May 18, 6:51 AM CDTMesoscale DiscussionSPC84 min
May 18, 8:40 AM CDTMesoscale DiscussionSPC2 hr
Jun 10, 2:06 PM CDTMesoscale DiscussionSPC54 min
Jun 10, 6:35 PM CDTMesoscale DiscussionSPC55 min
Jun 11, 9:53 AM CDTMesoscale DiscussionSPC97 min
Jun 11, 12:22 PM CDTMesoscale DiscussionSPC83 min
Jun 11, 3:07 PM CDTMesoscale DiscussionSPC113 min
Jun 11, 6:14 PM CDTMesoscale DiscussionSPC91 min
Jun 17, 8:16 AM CDTMesoscale DiscussionSPC59 min
Jun 17, 1:03 PM CDTMesoscale DiscussionSPC117 min
Jun 17, 4:00 PM CDTMesoscale DiscussionSPC60 min
Jul 26, 1:52 PM CDTMesoscale DiscussionSPC2 hr
Aug 12, 12:12 PM CDTMesoscale DiscussionSPC63 min
Aug 13, 11:03 PM CDTMesoscale DiscussionSPC117 min
Aug 14, 11:42 PM CDTMesoscale DiscussionSPC2 hr
Aug 16, 12:12 PM CDTMesoscale DiscussionSPC93 min
Aug 21, 11:43 PM CDTMesoscale DiscussionSPC92 min
Sep 15, 2:35 PM CDTMesoscale DiscussionSPC115 min

The busiest days

Days with the most alerts issued, by UTC date.

  1. June 11, 20264mesoscale discussions
  2. June 17, 20263mesoscale discussions
  3. March 11, 20262mesoscale discussions
  4. March 27, 20262mesoscale discussions
  5. April 3, 20262mesoscale discussions
  6. May 18, 20262mesoscale discussions
  7. June 10, 20262mesoscale discussions
  8. March 26, 20261mesoscale discussions
  9. March 31, 20261mesoscale discussions
  10. April 2, 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.