Alert archive / Illinois / Johnson County / Mesoscale Discussions
Mesoscale Discussions in Johnson County, Illinois, 2018
29 mesoscale discussions in 2018. 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 2018. Tap one for its archive.
- Mesoscale Discussions
- 29
- Busiest month
- June12 mesoscale discussions
- Busiest day
- June 26, 20183 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 11, 8:43 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 6, 6:08 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Feb 6, 9:42 PM CST | Mesoscale Discussion | SPC | 5 hr |
| Mar 24, 3:26 PM CDT | Mesoscale Discussion | SPC | 64 min |
| Apr 3, 12:57 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 3, 3:34 PM CDT | Mesoscale Discussion | SPC | 86 min |
| May 19, 6:14 PM CDT | Mesoscale Discussion | SPC | 61 min |
| May 20, 11:43 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| May 20, 3:32 PM CDT | Mesoscale Discussion | SPC | 118 min |
| May 31, 4:42 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 31, 7:37 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Jun 12, 1:26 PM CDT | Mesoscale Discussion | SPC | 109 min |
| Jun 21, 12:31 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 21, 3:56 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 23, 4:50 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Jun 25, 8:08 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 26, 7:39 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 26, 1:53 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Jun 26, 7:41 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 28, 2:00 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 28, 8:43 AM CDT | Mesoscale Discussion | SPC | 62 min |
| Jun 28, 7:30 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Jul 20, 12:58 PM CDT | Mesoscale Discussion | SPC | 62 min |
| Jul 20, 10:20 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Aug 6, 3:16 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 7, 12:22 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Aug 15, 2:50 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Aug 20, 11:46 AM CDT | Mesoscale Discussion | SPC | 119 min |
| Aug 20, 4:00 PM CDT | Mesoscale Discussion | SPC | 2 hr |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20172019
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.