Alert archive / Illinois / Severe Thunderstorm Watches / 2011
Severe Thunderstorm Watches in Illinois, July 2011
8 severe thunderstorm watches 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 watches reaches back to 1997.
Severe Thunderstorm Watches by county
Each county as a circle sized by its count in July 2011. Tap one for its archive.
- Severe Thunderstorm Watches
- 8
- Busiest day
- July 11, 20112 severe thunderstorm watches
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, 8:15 PM CDT | Severe Thunderstorm Watch | SPC | Cook, DuPage, Iroquois, Kankakee, Lake, Will | 4 hr |
| Jul 2, 2:50 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Calhoun, Cass, Champaign, Christian and 26 more | 7 hr |
| Jul 3, 1:15 PM CDT | Severe Thunderstorm Watch | SPC | Bond, Calhoun, Clay, Clinton, Crawford, Edwards and 22 more | 6 hr |
| Jul 7, 5:03 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Bond, Clinton, Fayette, Jackson, Madison and 8 more | 7 hr |
| Jul 11, 3:30 AM CDT | Severe Thunderstorm Watch | SPC | Bureau, Carroll, Henry, Jo Daviess, Mercer, Putnam and 3 more | 6 hr |
| Jul 11, 5:37 AM CDT | Severe Thunderstorm Watch | SPC | Boone, Cook, DeKalb, DuPage, Grundy, Kane and 9 more | 6 hr |
| Jul 12, 1:45 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 49 more | 7 hr |
| Jul 19, 11:27 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Cook, DuPage, Kane, Lake, McHenry | 2 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Cook County3
- DuPage County3
- Kankakee County3
- Lake County3
- Will County3
- Calhoun County3
- Greene County3
- Jersey County3
- Macoupin County3
- Bond County3
- Clinton County3
- Fayette County3
- Madison County3
- Marion County3
- Monroe County3
- Perry County3
- Randolph County3
- Saint Clair County3
- Washington County3
- Iroquois County2
- Adams County2
- Brown County2
- Cass County2
- Christian County2
- Fulton County2
- Grundy County2
- Logan County2
- Macon County2
- Mason County2
- Menard County2
- Morgan County2
- Pike County2
- Sangamon County2
- Schuyler County2
- Scott County2
- Clay County2
- Crawford County2
- Edwards County2
- Effingham County2
- Franklin County2
53 more counties
- Hamilton County2
- Jasper County2
- Jefferson County2
- Lawrence County2
- Montgomery County2
- Richland County2
- Wabash County2
- Wayne County2
- White County2
- Jackson County2
- Boone County2
- Kane County2
- McHenry County2
- Champaign County1
- DeWitt County1
- Ford County1
- Livingston County1
- McLean County1
- Peoria County1
- Piatt County1
- Tazewell County1
- Vermilion County1
- Woodford County1
- Alexander County1
- Pulaski County1
- Union County1
- Bureau County1
- Carroll County1
- Henry County1
- Jo Daviess County1
- Mercer County1
- Putnam County1
- Rock Island County1
- Stephenson County1
- Whiteside County1
- DeKalb County1
- Kendall County1
- LaSalle County1
- Lee County1
- Ogle County1
- Winnebago County1
- Clark County1
- Coles County1
- Cumberland County1
- Douglas County1
- Edgar County1
- Gallatin County1
- Hancock County1
- McDonough County1
- Moultrie County1
- Saline County1
- Shelby County1
- Williamson 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. Warning verification from the Mesonet's Cow. Rebuilt daily.