Alert archive / Illinois / Severe Thunderstorm Watches / 2023
Severe Thunderstorm Watches in Illinois, August 2023
5 severe thunderstorm watches in August 2023. 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 August 2023. Tap one for its archive.
- Severe Thunderstorm Watches
- 5
- Busiest day
- August 12, 20232 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 |
|---|---|---|---|---|
| Aug 2, 7:58 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Calhoun, Clinton, Jackson, Jersey, Johnson and 10 more | 7 hr |
| Aug 11, 9:23 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Pike | 7 hr |
| Aug 12, 1:42 AM CDT | Severe Thunderstorm Watch | SPC | Bond, Brown, Calhoun, Cass, Champaign, Christian and 49 more | 5 hr |
| Aug 24, 5:06 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Lake, McHenry | 4 hr |
| Aug 25, 7:09 PM CDT | Severe Thunderstorm Watch | SPC | Cass, Champaign, Christian, Clark, Coles, Crawford and 17 more | 7 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Calhoun County2
- Clinton County2
- Jackson County2
- Jersey County2
- Madison County2
- Monroe County2
- Perry County2
- Randolph County2
- Saint Clair County2
- Washington County2
- Cass County2
- Champaign County2
- Christian County2
- Clark County2
- Coles County2
- Crawford County2
- Cumberland County2
- DeWitt County2
- Douglas County2
- Edgar County2
- Effingham County2
- Jasper County2
- Lawrence County2
- Logan County2
- Macon County2
- Mason County2
- Menard County2
- Morgan County2
- Moultrie County2
- Piatt County2
- Sangamon County2
- Shelby County2
- Vermilion County2
- Alexander County1
- Johnson County1
- Massac County1
- Pope County1
- Pulaski County1
- Union County1
- Adams County1
26 more counties
- Pike County1
- Bond County1
- Brown County1
- Clay County1
- Edwards County1
- Fayette County1
- Franklin County1
- Gallatin County1
- Greene County1
- Hamilton County1
- Jefferson County1
- McLean County1
- Macoupin County1
- Marion County1
- Montgomery County1
- Richland County1
- Saline County1
- Schuyler County1
- Scott County1
- Wabash County1
- Wayne County1
- White County1
- Williamson County1
- Boone County1
- Lake County1
- McHenry County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20222024
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.