Alert archive / Illinois / Johnson County
Mesoscale Discussions in Johnson County, Illinois
868 mesoscale discussions since 1986. 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 since 1986. Tap one for its archive.
- Mesoscale Discussions
- 868
- Busiest year
- 200665 mesoscale discussions
- Average year
- 36over 24 years on file
Over time
By year
Mesoscale discussions are counted from 2003.
The latest mesoscale discussions
The most recent on file, newest first.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 19, 8:52 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Aug 12, 4:33 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Jul 21, 12:15 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Jul 10, 11:01 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Jul 10, 7:26 PM CDT | Mesoscale Discussion | SPC | 94 min |
| Jul 9, 12:42 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 4, 4:56 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 2, 6:32 PM CDT | Mesoscale Discussion | SPC | 118 min |
| Jun 27, 3:36 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jun 27, 9:39 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 26, 3:36 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jun 21, 10:06 AM CDT | Mesoscale Discussion | SPC | 114 min |
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive
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. Rebuilt daily.