Alert archive / Illinois / Severe Thunderstorm Warnings / 2015
Severe Thunderstorm Warnings in Illinois, September 2015
24 severe thunderstorm warnings in September 2015. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of severe thunderstorm warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count in September 2015. Tap one for its archive.
- Severe Thunderstorm Warnings
- 24
- Busiest day
- September 10, 20155 severe thunderstorm warnings
Over time
By day
Days in UTC, the clock the archive keeps.
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 | Counties | Lasted |
|---|---|---|---|---|
| Sep 4, 4:37 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 68 min |
| Sep 4, 4:48 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois, Kankakee | 33 min |
| Sep 4, 5:44 PM CDT | Severe Thunderstorm Warning | ILX | Macon, Moultrie, Piatt | 31 min |
| Sep 4, 6:25 PM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 20 min |
| Sep 4, 7:17 PM CDT | Severe Thunderstorm Warning | ILX | Champaign, McLean, Piatt | 28 min |
| Sep 4, 8:02 PM CDT | Severe Thunderstorm Warning | ILX | Champaign | 28 min |
| Sep 4, 8:16 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Piatt | 29 min |
| Sep 4, 9:49 PM CDT | Severe Thunderstorm Warning | ILX | Coles, Douglas | 26 min |
| Sep 10, 2:32 PM CDT | Severe Thunderstorm Warning | DVN | Henderson | 23 min |
| Sep 10, 2:58 PM CDT | Severe Thunderstorm Warning | DVN | Warren | 47 min |
| Sep 10, 4:04 PM CDT | Severe Thunderstorm Warning | ILX | Fulton, Mason, Tazewell | 26 min |
| Sep 10, 4:28 PM CDT | Severe Thunderstorm Warning | ILX | Fulton, Mason, Schuyler | 32 min |
| Sep 10, 5:24 PM CDT | Severe Thunderstorm Warning | ILX | Menard, Sangamon | 36 min |
| Sep 10, 8:34 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Washington | 33 min |
| Sep 17, 4:48 PM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess, Stephenson | 42 min |
| Sep 17, 5:23 PM CDT | Severe Thunderstorm Warning | LOT | Ogle, Winnebago | 52 min |
| Sep 17, 6:02 PM CDT | Severe Thunderstorm Warning | LOT | Ogle, Winnebago | 43 min |
| Sep 17, 7:50 PM CDT | Severe Thunderstorm Warning | DVN | Rock Island | 25 min |
| Sep 17, 9:14 PM CDT | Severe Thunderstorm Warning | DVN | Mercer, Rock Island | 31 min |
| Sep 18, 7:10 PM CDT | Severe Thunderstorm Warning | ILX | McLean | 24 min |
| Sep 18, 8:00 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Iroquois | 75 min |
| Sep 18, 9:53 PM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 31 min |
| Sep 18, 10:02 PM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 26 min |
| Sep 18, 11:54 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage, Grundy, Kane, Kendall, Will | 66 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Iroquois County3
- Piatt County3
- Vermilion County3
- Champaign County2
- McLean County2
- Fulton County2
- Mason County2
- Ogle County2
- Winnebago County2
- Rock Island County2
- Kankakee County1
- Macon County1
- Moultrie County1
- DeWitt County1
- Coles County1
- Douglas County1
- Henderson County1
- Warren County1
- Tazewell County1
- Schuyler County1
- Menard County1
- Sangamon County1
- Clinton County1
- Washington County1
- Jo Daviess County1
- Stephenson County1
- Mercer County1
- Ford County1
- Cook County1
- DuPage County1
- Grundy County1
- Kane County1
- Kendall County1
- Will County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20142016
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.