Alert archive / Illinois / Johnson County / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Johnson County, Illinois, 2009
19 severe thunderstorm warnings in 2009. An alert counts here when it covered this county. The archive of severe thunderstorm warnings reaches back to 1986.
Johnson County and its neighbors
Each county as a circle sized by its count in 2009. Tap one for its archive.
- Severe Thunderstorm Warnings
- 19
- Busiest month
- May7 severe thunderstorm warnings
- Busiest day
- May 8, 20095 severe thunderstorm warnings
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 |
|---|---|---|---|
| Mar 8, 1:07 PM CDT | Severe Thunderstorm Warning | PAH | 38 min |
| Apr 2, 2:41 PM CDT | Severe Thunderstorm Warning | PAH | 34 min |
| Apr 10, 12:48 AM CDT | Severe Thunderstorm Warning | PAH | 27 min |
| Apr 10, 12:55 AM CDT | Severe Thunderstorm Warning | PAH | 50 min |
| May 8, 12:50 AM CDT | Severe Thunderstorm Warning | PAH | 40 min |
| May 8, 1:51 AM CDT | Severe Thunderstorm Warning | PAH | 39 min |
| May 8, 2:30 AM CDT | Severe Thunderstorm Warning | PAH | 45 min |
| May 8, 11:34 AM CDT | Severe Thunderstorm Warning | PAH | 56 min |
| May 8, 12:56 PM CDT | Severe Thunderstorm Warning | PAH | 64 min |
| May 14, 3:38 AM CDT | Severe Thunderstorm Warning | PAH | 17 min |
| May 14, 3:51 AM CDT | Severe Thunderstorm Warning | PAH | 24 min |
| Jun 8, 8:37 PM CDT | Severe Thunderstorm Warning | PAH | 38 min |
| Jun 8, 9:38 PM CDT | Severe Thunderstorm Warning | PAH | 18 min |
| Jun 16, 4:14 AM CDT | Severe Thunderstorm Warning | PAH | 46 min |
| Jun 16, 11:20 AM CDT | Severe Thunderstorm Warning | PAH | 25 min |
| Aug 4, 4:46 PM CDT | Severe Thunderstorm Warning | PAH | 44 min |
| Aug 4, 4:59 PM CDT | Severe Thunderstorm Warning | PAH | 46 min |
| Aug 4, 5:18 PM CDT | Severe Thunderstorm Warning | PAH | 42 min |
| Sep 26, 4:06 PM CDT | Severe Thunderstorm Warning | PAH | 21 min |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20082010
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.