Alert archive / Illinois / Severe Thunderstorm Warnings / 2011
Severe Thunderstorm Warnings in Illinois, July 2011
73 severe thunderstorm warnings in July 2011. 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 2011. Tap one for its archive.
- Severe Thunderstorm Warnings
- 73
- Busiest day
- July 3, 201114 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 |
|---|---|---|---|---|
| Jun 30, 8:21 PM CDT | Severe Thunderstorm Warning | LOT | Lake | 24 min |
| Jun 30, 8:35 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage, Lake | 55 min |
| Jun 30, 8:41 PM CDT | Severe Thunderstorm Warning | LOT | Cook, Will | 64 min |
| Jun 30, 9:19 PM CDT | Severe Thunderstorm Warning | LOT | Kankakee, Will | 41 min |
| Jun 30, 9:35 PM CDT | Severe Thunderstorm Warning | LOT | Cook, Will | 55 min |
| Jun 30, 10:15 PM CDT | Severe Thunderstorm Warning | LOT | Kankakee, Will | 45 min |
| Jul 1, 7:02 AM CDT | Severe Thunderstorm Warning | LOT | Ford, Iroquois, Livingston | 28 min |
| Jul 1, 7:43 AM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 48 min |
| Jul 1, 1:14 PM CDT | Severe Thunderstorm Warning | LOT | Cook | 42 min |
| Jul 2, 7:34 PM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 56 min |
| Jul 2, 8:56 PM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 34 min |
| Jul 2, 10:54 PM CDT | Severe Thunderstorm Warning | ILX | Coles | 36 min |
| Jul 3, 1:31 PM CDT | Severe Thunderstorm Warning | LSX | Randolph, Saint Clair, Washington | 44 min |
| Jul 3, 1:38 PM CDT | Severe Thunderstorm Warning | PAH | Jefferson | 37 min |
| Jul 3, 1:45 PM CDT | Severe Thunderstorm Warning | PAH | Jefferson, Wayne | 34 min |
| Jul 3, 2:13 PM CDT | Severe Thunderstorm Warning | PAH | Jefferson, Wayne | 28 min |
| Jul 3, 2:39 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Monroe, Randolph, Saint Clair, Washington | 21 min |
| Jul 3, 2:50 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair | 40 min |
| Jul 3, 2:52 PM CDT | Severe Thunderstorm Warning | PAH | Hamilton | 23 min |
| Jul 3, 3:00 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Monroe, Randolph, Saint Clair, Washington | 45 min |
| Jul 3, 3:11 PM CDT | Severe Thunderstorm Warning | PAH | White | 34 min |
| Jul 3, 3:45 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton | 30 min |
| Jul 3, 3:56 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Jersey | 49 min |
| Jul 7, 5:55 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair | 50 min |
| Jul 7, 7:48 PM CDT | Severe Thunderstorm Warning | LSX | Randolph | 42 min |
| Jul 11, 5:35 AM CDT | Severe Thunderstorm Warning | DVN | Carroll, Jo Daviess, Whiteside | 55 min |
| Jul 11, 6:11 AM CDT | Severe Thunderstorm Warning | DVN | Carroll, Jo Daviess, Rock Island, Stephenson, Whiteside | 64 min |
| Jul 11, 6:16 AM CDT | Severe Thunderstorm Warning | LOT | Boone, DeKalb, LaSalle, Lee, Ogle, Winnebago | 59 min |
| Jul 11, 7:03 AM CDT | Severe Thunderstorm Warning | LOT | Boone, Cook, DeKalb, DuPage, Kane, Kendall and 6 more | 57 min |
| Jul 11, 7:17 AM CDT | Severe Thunderstorm Warning | LOT | Lee, Ogle, Winnebago | 43 min |
| Jul 11, 7:44 AM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage, Kendall, Lake, Will | 46 min |
| Jul 11, 8:22 AM CDT | Severe Thunderstorm Warning | LOT | Cook, Will | 53 min |
| Jul 12, 2:25 PM CDT | Severe Thunderstorm Warning | LSX | Madison, Saint Clair | 26 min |
| Jul 12, 3:38 PM CDT | Severe Thunderstorm Warning | LSX | Adams, Brown | 52 min |
| Jul 12, 3:44 PM CDT | Severe Thunderstorm Warning | LSX | Adams, Pike | 46 min |
| Jul 12, 4:18 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 27 min |
| Jul 12, 4:31 PM CDT | Severe Thunderstorm Warning | LSX | Brown, Calhoun, Greene, Jersey, Pike | 44 min |
| Jul 12, 4:46 PM CDT | Severe Thunderstorm Warning | ILX | Scott | 44 min |
| Jul 12, 4:48 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 42 min |
| Jul 12, 5:03 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Jersey, Macoupin, Madison, Montgomery and 1 more | 57 min |
| Jul 12, 5:10 PM CDT | Severe Thunderstorm Warning | LSX | Fayette, Montgomery | 30 min |
| Jul 12, 5:39 PM CDT | Severe Thunderstorm Warning | ILX | Lawrence | 51 min |
| Jul 12, 5:51 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Fayette, Marion | 39 min |
| Jul 12, 6:37 PM CDT | Severe Thunderstorm Warning | ILX | Crawford, Lawrence | 38 min |
| Jul 12, 9:33 PM CDT | Severe Thunderstorm Warning | PAH | Massac, Pope | 27 min |
| Jul 23, 12:41 AM CDT | Severe Thunderstorm Warning | LOT | Boone, DeKalb, Lee, McHenry, Ogle, Winnebago | 64 min |
| Jul 23, 12:53 AM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage | 54 min |
| Jul 23, 6:34 PM CDT | Severe Thunderstorm Warning | DVN | Henderson | 45 min |
| Jul 23, 9:18 PM CDT | Severe Thunderstorm Warning | LOT | Iroquois | 57 min |
| Jul 24, 4:29 AM CDT | Severe Thunderstorm Warning | DVN | Henry, Rock Island, Whiteside | 37 min |
| Jul 24, 6:19 AM CDT | Severe Thunderstorm Warning | LOT | Boone, DeKalb, Kane, Kendall, Lee, McHenry and 2 more | 56 min |
| Jul 24, 6:44 AM CDT | Severe Thunderstorm Warning | LOT | DeKalb, Grundy, Kendall, LaSalle, Lee, Livingston | 47 min |
| Jul 24, 8:16 AM CDT | Severe Thunderstorm Warning | LOT | Ford, Iroquois, Kankakee, Livingston, Will | 59 min |
| Jul 24, 11:48 AM CDT | Severe Thunderstorm Warning | ILX | Christian, Sangamon | 42 min |
| Jul 24, 12:21 PM CDT | Severe Thunderstorm Warning | LSX | Fayette, Montgomery | 24 min |
| Jul 24, 1:50 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 25 min |
| Jul 24, 2:47 PM CDT | Severe Thunderstorm Warning | LSX | Randolph | 43 min |
| Jul 26, 5:14 PM CDT | Severe Thunderstorm Warning | ILX | Menard, Sangamon | 36 min |
| Jul 27, 6:48 PM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess | 57 min |
| Jul 27, 8:43 PM CDT | Severe Thunderstorm Warning | LOT | Boone, DeKalb, Ogle, Winnebago | 62 min |
| Jul 27, 9:29 PM CDT | Severe Thunderstorm Warning | LOT | Boone, DeKalb, Kane, McHenry | 61 min |
| Jul 27, 10:10 PM CDT | Severe Thunderstorm Warning | LOT | Cook, Kane, Lake, McHenry | 80 min |
| Jul 28, 12:11 AM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage, Will | 64 min |
| Jul 28, 11:14 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 33 min |
| Jul 28, 11:55 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage | 35 min |
| Jul 29, 1:41 AM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage | 64 min |
| Jul 29, 5:56 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Madison, Montgomery | 49 min |
| Jul 29, 6:39 PM CDT | Severe Thunderstorm Warning | LSX | Fayette | 51 min |
| Jul 29, 7:08 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton | 30 min |
| Jul 29, 7:13 PM CDT | Severe Thunderstorm Warning | ILX | Cumberland, Effingham, Shelby | 62 min |
| Jul 29, 8:34 PM CDT | Severe Thunderstorm Warning | ILX | Jasper | 26 min |
| Jul 29, 9:09 PM CDT | Severe Thunderstorm Warning | ILX | Crawford, Jasper, Lawrence, Richland | 52 min |
| Jul 30, 2:06 PM CDT | Severe Thunderstorm Warning | PAH | Perry | 24 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Cook County12
- Will County8
- DuPage County7
- DeKalb County7
- Saint Clair County6
- Boone County6
- Lee County6
- Ogle County6
- Winnebago County6
- Lake County5
- Randolph County5
- McHenry County5
- Iroquois County4
- Clinton County4
- Monroe County4
- Bond County4
- Kane County4
- Kendall County4
- Marion County4
- Montgomery County4
- Fayette County4
- Kankakee County3
- Livingston County3
- Washington County3
- Jefferson County3
- Calhoun County3
- Jersey County3
- Jo Daviess County3
- Whiteside County3
- LaSalle County3
- Madison County3
- Adams County3
- Pike County3
- Lawrence County3
- Ford County2
- Vermilion County2
- Wayne County2
- Carroll County2
- Rock Island County2
- Brown County2
22 more counties
- Greene County2
- Crawford County2
- Sangamon County2
- Jasper County2
- Coles County1
- Hamilton County1
- White County1
- Stephenson County1
- Scott County1
- Macoupin County1
- Massac County1
- Pope County1
- Henderson County1
- Henry County1
- Grundy County1
- Christian County1
- Menard County1
- Cumberland County1
- Effingham County1
- Shelby County1
- Richland County1
- Perry County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20102012
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.