Alert archive / Illinois / Johnson County / Mesoscale Discussions
Mesoscale Discussions in Johnson County, Illinois, 2025
36 mesoscale discussions in 2025. An alert counts here when it covered this county. The archive of mesoscale discussions reaches back to 2003.
Johnson County and its neighbors
Each county as a circle sized by its count in 2025. Tap one for its archive.
- Mesoscale Discussions
- 36
- Busiest month
- April9 mesoscale discussions
- Busiest day
- May 16, 20255 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 5, 2:40 AM CST | Mesoscale Discussion | SPC | 5 hr |
| Jan 5, 7:56 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Feb 18, 6:01 PM CST | Mesoscale Discussion | SPC | 3 hr |
| Mar 14, 11:50 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Mar 30, 5:20 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Apr 2, 12:51 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Apr 2, 5:35 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Apr 2, 7:33 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Apr 4, 9:23 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Apr 10, 12:55 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 20, 7:46 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Apr 20, 11:44 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Apr 29, 8:30 AM CDT | Mesoscale Discussion | SPC | 90 min |
| Apr 29, 12:52 PM CDT | Mesoscale Discussion | SPC | 83 min |
| May 1, 6:19 PM CDT | Mesoscale Discussion | SPC | 116 min |
| May 16, 1:46 AM CDT | Mesoscale Discussion | SPC | 119 min |
| May 16, 5:32 AM CDT | Mesoscale Discussion | SPC | 58 min |
| May 16, 2:08 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 16, 5:06 PM CDT | Mesoscale Discussion | SPC | 114 min |
| May 16, 6:56 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 20, 1:07 AM CDT | Mesoscale Discussion | SPC | 83 min |
| Jun 6, 11:49 AM CDT | Mesoscale Discussion | SPC | 116 min |
| Jun 7, 11:50 PM CDT | Mesoscale Discussion | SPC | 85 min |
| Jun 18, 7:59 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 18, 1:44 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Jul 6, 12:09 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 12, 11:42 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 13, 1:18 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 17, 12:53 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 18, 12:20 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Sep 14, 3:12 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 18, 4:48 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Nov 18, 2:56 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Nov 18, 6:09 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 18, 10:44 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 28, 3:49 PM CST | Mesoscale Discussion | SPC | 86 min |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20242026
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.