Alert archive / Illinois / Tornado Warnings / 2004
Tornado Warnings in Illinois, April 2004
31 tornado warnings in April 2004. 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 tornado warnings reaches back to 1986.
Tornado Warnings by county
Each county as a circle sized by its count in April 2004. Tap one for its archive.
- Tornado Warnings
- 31
- Busiest day
- April 21, 200415 tornado 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 |
|---|---|---|---|---|
| Apr 20, 2:30 PM CDT | Tornado Warning | ILX | Champaign | 45 min |
| Apr 20, 5:11 PM CDT | Tornado Warning | ILX | Marshall | 64 min |
| Apr 20, 5:15 PM CDT | Tornado Warning | DVN | Bureau, Putnam | 45 min |
| Apr 20, 5:27 PM CDT | Tornado Warning | ILX | Tazewell | 63 min |
| Apr 20, 5:33 PM CDT | Tornado Warning | LOT | LaSalle | 42 min |
| Apr 20, 5:49 PM CDT | Tornado Warning | ILX | Knox, Stark | 41 min |
| Apr 20, 5:51 PM CDT | Tornado Warning | ILX | Marshall | 9 min |
| Apr 20, 5:55 PM CDT | Tornado Warning | ILX | Marshall | 35 min |
| Apr 20, 6:05 PM CDT | Tornado Warning | ILX | Woodford | 55 min |
| Apr 20, 6:11 PM CDT | Tornado Warning | LOT | LaSalle | 34 min |
| Apr 20, 6:26 PM CDT | Tornado Warning | LOT | Grundy | 34 min |
| Apr 20, 6:37 PM CDT | Tornado Warning | LOT | Ford, Iroquois, Livingston | 38 min |
| Apr 20, 6:43 PM CDT | Tornado Warning | LOT | Kendall, LaSalle | 32 min |
| Apr 20, 7:01 PM CDT | Tornado Warning | LOT | Grundy, Will | 29 min |
| Apr 20, 7:13 PM CDT | Tornado Warning | LOT | Kankakee | 32 min |
| Apr 20, 7:15 PM CDT | Tornado Warning | LOT | Iroquois | 30 min |
| Apr 20, 7:17 PM CDT | Tornado Warning | LOT | Livingston | 43 min |
| Apr 20, 7:17 PM CDT | Tornado Warning | LOT | DuPage, Kane, Kendall | 28 min |
| Apr 20, 7:21 PM CDT | Tornado Warning | LOT | LaSalle | 24 min |
| Apr 20, 7:31 PM CDT | Tornado Warning | LOT | Will | 29 min |
| Apr 20, 7:34 PM CDT | Tornado Warning | LOT | Grundy | 41 min |
| Apr 20, 7:35 PM CDT | Tornado Warning | DVN | Carroll, Jo Daviess | 65 min |
| Apr 20, 7:44 PM CDT | Tornado Warning | LOT | Kendall | 31 min |
| Apr 20, 7:44 PM CDT | Tornado Warning | LOT | Kankakee | 46 min |
| Apr 20, 7:47 PM CDT | Tornado Warning | LOT | Kendall | 28 min |
| Apr 20, 8:02 PM CDT | Tornado Warning | LOT | Cook, Will | 28 min |
| Apr 20, 8:12 PM CDT | Tornado Warning | LOT | DuPage, Kane, Kendall | 33 min |
| Apr 20, 8:27 PM CDT | Tornado Warning | LOT | Cook, Will | 48 min |
| Apr 24, 7:44 PM CDT | Tornado Warning | LSX | Randolph | 46 min |
| Apr 24, 8:09 PM CDT | Tornado Warning | PAH | Jackson, Perry | 51 min |
| Apr 24, 9:00 PM CDT | Tornado Warning | PAH | Jackson | 15 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Kendall County5
- LaSalle County4
- Will County4
- Marshall County3
- Grundy County3
- Iroquois County2
- Livingston County2
- Kankakee County2
- DuPage County2
- Kane County2
- Cook County2
- Jackson County2
- Champaign County1
- Bureau County1
- Putnam County1
- Tazewell County1
- Knox County1
- Stark County1
- Woodford County1
- Ford County1
- Carroll County1
- Jo Daviess County1
- Randolph County1
- Perry County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20032005
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.