Alert archive / Illinois / Severe Thunderstorm Warnings / 2017
Severe Thunderstorm Warnings in Illinois, July 2017
117 severe thunderstorm warnings in July 2017. 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 July 2017. Tap one for its archive.
- Severe Thunderstorm Warnings
- 117
- Busiest day
- July 23, 201729 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 |
|---|---|---|---|---|
| Jul 5, 4:38 PM CDT | Severe Thunderstorm Warning | LOT | Ogle | 17 min |
| Jul 5, 7:17 PM CDT | Severe Thunderstorm Warning | LOT | DuPage, Kane, Kendall, Will | 12 min |
| Jul 7, 12:48 AM CDT | Severe Thunderstorm Warning | LOT | Lake | 45 min |
| Jul 7, 3:58 AM CDT | Severe Thunderstorm Warning | DVN | Hancock, Henderson, McDonough, Warren | 49 min |
| Jul 7, 11:49 AM CDT | Severe Thunderstorm Warning | LOT | Cook | 41 min |
| Jul 7, 12:36 PM CDT | Severe Thunderstorm Warning | LOT | Will | 27 min |
| Jul 7, 3:54 PM CDT | Severe Thunderstorm Warning | ILX | Edgar, Vermilion | 51 min |
| Jul 7, 5:01 PM CDT | Severe Thunderstorm Warning | ILX | Clark, Edgar | 44 min |
| Jul 7, 6:05 PM CDT | Severe Thunderstorm Warning | ILX | Crawford | 40 min |
| Jul 10, 2:42 AM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess | 50 min |
| Jul 10, 4:48 AM CDT | Severe Thunderstorm Warning | DVN | Henderson, Mercer, Warren | 42 min |
| Jul 10, 5:14 AM CDT | Severe Thunderstorm Warning | ILX | Fulton, Knox | 61 min |
| Jul 10, 5:21 AM CDT | Severe Thunderstorm Warning | DVN | Hancock, Henderson, McDonough, Warren | 54 min |
| Jul 10, 5:34 AM CDT | Severe Thunderstorm Warning | ILX | Fulton, Peoria, Stark, Tazewell, Woodford | 56 min |
| Jul 10, 5:51 AM CDT | Severe Thunderstorm Warning | ILX | Fulton, Logan, Mason, Peoria, Tazewell | 31 min |
| Jul 10, 5:31 PM CDT | Severe Thunderstorm Warning | ILX | Knox, Peoria, Stark | 44 min |
| Jul 10, 6:17 PM CDT | Severe Thunderstorm Warning | ILX | Peoria | 43 min |
| Jul 10, 6:29 PM CDT | Severe Thunderstorm Warning | ILX | Fulton | 46 min |
| Jul 10, 6:38 PM CDT | Severe Thunderstorm Warning | DVN | Hancock, Henderson | 67 min |
| Jul 10, 6:42 PM CDT | Severe Thunderstorm Warning | ILX | Fulton, Mason, Peoria, Tazewell | 48 min |
| Jul 10, 6:58 PM CDT | Severe Thunderstorm Warning | ILX | Peoria, Tazewell | 47 min |
| Jul 10, 7:12 PM CDT | Severe Thunderstorm Warning | ILX | Fulton, Mason, Peoria, Tazewell | 48 min |
| Jul 10, 7:29 PM CDT | Severe Thunderstorm Warning | ILX | Tazewell | 46 min |
| Jul 10, 7:58 PM CDT | Severe Thunderstorm Warning | ILX | Fulton | 32 min |
| Jul 10, 8:02 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Logan, McLean, Macon, Tazewell | 43 min |
| Jul 10, 8:10 PM CDT | Severe Thunderstorm Warning | DVN | McDonough | 50 min |
| Jul 10, 8:34 PM CDT | Severe Thunderstorm Warning | LOT | LaSalle | 41 min |
| Jul 10, 8:44 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Macon, Moultrie, Piatt | 46 min |
| Jul 10, 9:34 PM CDT | Severe Thunderstorm Warning | LOT | Grundy, Kendall | 41 min |
| Jul 10, 10:02 PM CDT | Severe Thunderstorm Warning | ILX | Sangamon | 31 min |
| Jul 10, 10:14 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Sangamon | 46 min |
| Jul 10, 10:28 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Fayette, Montgomery | 62 min |
| Jul 10, 10:41 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Shelby | 31 min |
| Jul 11, 8:29 AM CDT | Severe Thunderstorm Warning | DVN | Bureau, Putnam | 31 min |
| Jul 11, 8:38 AM CDT | Severe Thunderstorm Warning | ILX | Marshall, Woodford | 37 min |
| Jul 11, 8:41 AM CDT | Severe Thunderstorm Warning | LOT | LaSalle, Livingston | 49 min |
| Jul 11, 8:54 AM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Logan, McLean, Macon | 51 min |
| Jul 11, 9:33 AM CDT | Severe Thunderstorm Warning | ILX | Champaign, Coles, DeWitt, Douglas, Macon, Moultrie and 1 more | 57 min |
| Jul 11, 10:06 AM CDT | Severe Thunderstorm Warning | ILX | Champaign, Vermilion | 39 min |
| Jul 11, 10:42 PM CDT | Severe Thunderstorm Warning | LOT | Kane | 33 min |
| Jul 11, 11:52 PM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess | 53 min |
| Jul 12, 12:37 AM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess | 52 min |
| Jul 12, 12:57 AM CDT | Severe Thunderstorm Warning | DVN | Carroll, Jo Daviess, Stephenson | 63 min |
| Jul 12, 1:05 AM CDT | Severe Thunderstorm Warning | LOT | Lake, McHenry | 40 min |
| Jul 12, 1:51 AM CDT | Severe Thunderstorm Warning | LOT | Cook, Lake | 28 min |
| Jul 12, 7:04 AM CDT | Severe Thunderstorm Warning | LOT | Lake, McHenry | 71 min |
| Jul 12, 9:24 AM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage, Lake | 21 min |
| Jul 16, 12:59 AM CDT | Severe Thunderstorm Warning | LOT | McHenry | 35 min |
| Jul 16, 2:51 AM CDT | Severe Thunderstorm Warning | LOT | Ogle | 39 min |
| Jul 16, 3:17 AM CDT | Severe Thunderstorm Warning | LOT | DeKalb, Ogle | 28 min |
| Jul 16, 4:34 PM CDT | Severe Thunderstorm Warning | ILX | Fulton, Mason | 41 min |
| Jul 16, 7:32 PM CDT | Severe Thunderstorm Warning | ILX | Moultrie | 29 min |
| Jul 16, 9:39 PM CDT | Severe Thunderstorm Warning | LSX | Saint Clair | 36 min |
| Jul 17, 3:25 PM CDT | Severe Thunderstorm Warning | PAH | Jackson | 35 min |
| Jul 19, 6:42 PM CDT | Severe Thunderstorm Warning | DVN | Carroll, Jo Daviess, Stephenson | 78 min |
| Jul 19, 7:21 PM CDT | Severe Thunderstorm Warning | LOT | Ogle, Winnebago | 54 min |
| Jul 19, 7:54 PM CDT | Severe Thunderstorm Warning | LOT | Boone, DeKalb, Lee, McHenry, Ogle, Winnebago | 51 min |
| Jul 19, 8:30 PM CDT | Severe Thunderstorm Warning | LOT | DeKalb, LaSalle, Lee | 30 min |
| Jul 19, 8:34 PM CDT | Severe Thunderstorm Warning | LOT | Boone, Cook, DeKalb, DuPage, Kane, Kendall and 4 more | 56 min |
| Jul 19, 9:08 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage, Grundy, Kendall, Will | 67 min |
| Jul 20, 3:48 AM CDT | Severe Thunderstorm Warning | LOT | Boone, DeKalb, Ogle, Winnebago | 42 min |
| Jul 20, 4:21 AM CDT | Severe Thunderstorm Warning | LOT | Boone, DeKalb, Kane, Ogle | 39 min |
| Jul 20, 8:45 PM CDT | Severe Thunderstorm Warning | DVN | Mercer, Rock Island | 31 min |
| Jul 20, 9:44 PM CDT | Severe Thunderstorm Warning | DVN | Rock Island | 46 min |
| Jul 20, 10:13 PM CDT | Severe Thunderstorm Warning | DVN | Rock Island | 45 min |
| Jul 20, 10:39 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Rock Island, Whiteside | 35 min |
| Jul 21, 12:32 AM CDT | Severe Thunderstorm Warning | LOT | DeKalb, LaSalle, Lee | 43 min |
| Jul 21, 12:57 AM CDT | Severe Thunderstorm Warning | LOT | DeKalb, LaSalle | 14 min |
| Jul 21, 2:39 PM CDT | Severe Thunderstorm Warning | LOT | Boone, Winnebago | 36 min |
| Jul 21, 3:08 PM CDT | Severe Thunderstorm Warning | LOT | Boone, DeKalb, McHenry | 37 min |
| Jul 21, 4:14 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage, Kane | 46 min |
| Jul 21, 4:41 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage | 49 min |
| Jul 21, 6:15 PM CDT | Severe Thunderstorm Warning | DVN | Stephenson | 45 min |
| Jul 21, 6:30 PM CDT | Severe Thunderstorm Warning | LOT | Ogle | 45 min |
| Jul 21, 6:39 PM CDT | Severe Thunderstorm Warning | LOT | Grundy, Kankakee, Livingston, Will | 51 min |
| Jul 21, 7:33 PM CDT | Severe Thunderstorm Warning | DVN | Carroll, Rock Island, Whiteside | 57 min |
| Jul 21, 7:33 PM CDT | Severe Thunderstorm Warning | DVN | Bureau, Henry, Mercer, Rock Island | 57 min |
| Jul 21, 7:58 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois, Kankakee | 47 min |
| Jul 21, 8:00 PM CDT | Severe Thunderstorm Warning | LOT | Lee, Ogle | 45 min |
| Jul 21, 8:01 PM CDT | Severe Thunderstorm Warning | LOT | Kendall, LaSalle | 44 min |
| Jul 21, 8:33 PM CDT | Severe Thunderstorm Warning | LOT | DeKalb, Lee | 27 min |
| Jul 21, 11:10 PM CDT | Severe Thunderstorm Warning | DVN | Carroll, Jo Daviess, Stephenson | 65 min |
| Jul 22, 12:36 AM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 24 min |
| Jul 22, 1:03 AM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 42 min |
| Jul 22, 11:32 PM CDT | Severe Thunderstorm Warning | ILX | Clark, Coles, Cumberland, Edgar | 43 min |
| Jul 23, 12:11 AM CDT | Severe Thunderstorm Warning | ILX | Clark | 34 min |
| Jul 23, 12:14 AM CDT | Severe Thunderstorm Warning | ILX | Lawrence, Richland | 46 min |
| Jul 23, 2:17 AM CDT | Severe Thunderstorm Warning | LSX | Pike | 43 min |
| Jul 23, 2:48 AM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Jersey, Madison, Pike | 42 min |
| Jul 23, 3:08 AM CDT | Severe Thunderstorm Warning | ILX | Morgan, Scott | 52 min |
| Jul 23, 3:14 AM CDT | Severe Thunderstorm Warning | LSX | Madison | 46 min |
| Jul 23, 3:19 AM CDT | Severe Thunderstorm Warning | LSX | Saint Clair | 41 min |
| Jul 23, 3:25 AM CDT | Severe Thunderstorm Warning | LSX | Greene, Jersey, Macoupin, Montgomery | 50 min |
| Jul 23, 3:48 AM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton, Madison, Saint Clair, Washington | 42 min |
| Jul 23, 4:08 AM CDT | Severe Thunderstorm Warning | LSX | Fayette, Macoupin, Montgomery | 67 min |
| Jul 23, 4:17 AM CDT | Severe Thunderstorm Warning | PAH | Jefferson | 43 min |
| Jul 23, 4:24 AM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton, Fayette, Marion, Washington | 52 min |
| Jul 23, 4:42 AM CDT | Severe Thunderstorm Warning | PAH | Hamilton, Jefferson, Wayne | 33 min |
| Jul 23, 4:46 AM CDT | Severe Thunderstorm Warning | ILX | Clay, Effingham, Jasper, Richland | 44 min |
| Jul 23, 5:00 AM CDT | Severe Thunderstorm Warning | PAH | Edwards, Wayne, White | 45 min |
| Jul 23, 5:16 AM CDT | Severe Thunderstorm Warning | ILX | Crawford, Jasper, Lawrence, Richland | 44 min |
| Jul 23, 5:17 AM CDT | Severe Thunderstorm Warning | PAH | Hamilton, White | 28 min |
| Jul 23, 5:25 AM CDT | Severe Thunderstorm Warning | PAH | Wabash | 35 min |
| Jul 23, 5:33 AM CDT | Severe Thunderstorm Warning | PAH | White | 42 min |
| Jul 23, 5:58 AM CDT | Severe Thunderstorm Warning | ILX | Crawford, Jasper, Lawrence, Richland | 47 min |
| Jul 23, 3:45 PM CDT | Severe Thunderstorm Warning | LOT | Boone, DeKalb, Kane, McHenry | 45 min |
| Jul 23, 4:29 PM CDT | Severe Thunderstorm Warning | ILX | Morgan, Scott | 20 min |
| Jul 23, 4:30 PM CDT | Severe Thunderstorm Warning | LSX | Greene, Macoupin | 30 min |
| Jul 23, 4:33 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage, Kane | 42 min |
| Jul 23, 4:52 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage, Kane, Kendall, Will | 53 min |
| Jul 23, 5:42 PM CDT | Severe Thunderstorm Warning | LOT | Grundy, Kendall, Will | 37 min |
| Jul 23, 6:29 PM CDT | Severe Thunderstorm Warning | LOT | Kankakee | 31 min |
| Jul 23, 6:35 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Iroquois, Kankakee | 40 min |
| Jul 23, 8:51 PM CDT | Severe Thunderstorm Warning | ILX | Champaign, Douglas, Edgar, Vermilion | 39 min |
| Jul 26, 9:02 PM CDT | Severe Thunderstorm Warning | ILX | Menard, Sangamon | 43 min |
| Jul 26, 9:14 PM CDT | Severe Thunderstorm Warning | ILX | Logan, Mason, Menard | 46 min |
| Jul 27, 1:19 AM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 41 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- DeKalb County11
- Ogle County9
- Cook County9
- DuPage County8
- Kane County8
- Fulton County8
- Kendall County7
- Peoria County7
- Tazewell County7
- LaSalle County7
- McHenry County7
- Boone County7
- Will County6
- Lake County6
- Jo Daviess County6
- Lee County6
- Rock Island County6
- Mason County5
- Henderson County4
- Edgar County4
- Vermilion County4
- Logan County4
- DeWitt County4
- Macon County4
- Grundy County4
- Carroll County4
- Stephenson County4
- Winnebago County4
- Kankakee County4
- Richland County4
- Hancock County3
- McDonough County3
- Warren County3
- Clark County3
- Crawford County3
- Mercer County3
- Moultrie County3
- Sangamon County3
- Bond County3
- Fayette County3
44 more counties
- Montgomery County3
- Champaign County3
- Saint Clair County3
- Iroquois County3
- Lawrence County3
- Greene County3
- Madison County3
- Macoupin County3
- Jasper County3
- White County3
- Knox County2
- Stark County2
- Woodford County2
- McLean County2
- Piatt County2
- Christian County2
- Bureau County2
- Livingston County2
- Coles County2
- Douglas County2
- Henry County2
- Whiteside County2
- Pike County2
- Calhoun County2
- Jersey County2
- Morgan County2
- Scott County2
- Clinton County2
- Washington County2
- Jefferson County2
- Hamilton County2
- Wayne County2
- Menard County2
- Shelby County1
- Putnam County1
- Marshall County1
- Jackson County1
- Cumberland County1
- Marion County1
- Clay County1
- Effingham County1
- Edwards County1
- Wabash County1
- Ford County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20162018
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.