Alert archive / Illinois / Severe Thunderstorm Watches / 2021
Severe Thunderstorm Watches in Illinois, May 2021
5 severe thunderstorm watches in May 2021. 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 May 2021. Tap one for its archive.
- Severe Thunderstorm Watches
- 5
- Busiest day
- May 4, 20212 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 |
|---|---|---|---|---|
| May 3, 2:47 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Bond, Brown, Bureau, Calhoun, Cass and 43 more | 6 hr |
| May 3, 7:58 PM CDT | Severe Thunderstorm Watch | SPC | Clark, Clay, Crawford, Cumberland, Effingham, Jasper and 2 more | 3 hr |
| May 4, 1:41 AM CDT | Severe Thunderstorm Watch | SPC | Alexander, Hardin, Johnson, Massac, Pope, Pulaski and 1 more | 6 hr |
| May 6, 12:38 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more | 5 hr |
| May 27, 11:26 AM CDT | Severe Thunderstorm Watch | SPC | Bond, Calhoun, Cass, Champaign, Christian, Clark and 42 more | 8 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Bond County2
- Calhoun County2
- Cass County2
- Champaign County2
- Christian County2
- Clinton County2
- Coles County2
- DeWitt County2
- Douglas County2
- Edgar County2
- Fayette County2
- Greene County2
- Jersey County2
- Logan County2
- Macon County2
- Macoupin County2
- Madison County2
- Menard County2
- Monroe County2
- Montgomery County2
- Morgan County2
- Moultrie County2
- Piatt County2
- Saint Clair County2
- Sangamon County2
- Scott County2
- Shelby County2
- Vermilion County2
- Clark County2
- Clay County2
- Crawford County2
- Cumberland County2
- Effingham County2
- Jasper County2
- Lawrence County2
- Richland County2
- Alexander County2
- Hardin County2
- Johnson County2
- Massac County2
39 more counties
- Pope County2
- Pulaski County2
- Union County2
- Edwards County2
- Franklin County2
- Hamilton County2
- Jackson County2
- Jefferson County2
- Perry County2
- Wabash County2
- Wayne County2
- White County2
- Adams County1
- Brown County1
- Bureau County1
- Fulton County1
- Hancock County1
- Henderson County1
- Henry County1
- Knox County1
- McDonough County1
- McLean County1
- Marshall County1
- Mason County1
- Mercer County1
- Peoria County1
- Pike County1
- Putnam County1
- Schuyler County1
- Stark County1
- Tazewell County1
- Warren County1
- Woodford County1
- Gallatin County1
- Saline County1
- Williamson County1
- Marion County1
- Randolph County1
- Washington County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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.