Alert archive / Illinois / Severe Thunderstorm Watches / 2012
Severe Thunderstorm Watches in Illinois, April 2012
5 severe thunderstorm watches in April 2012. 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 April 2012. Tap one for its archive.
- Severe Thunderstorm Watches
- 5
- Busiest day
- April 26, 20122 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 |
|---|---|---|---|---|
| Mar 31, 9:24 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, DeKalb, Henry, Jo Daviess and 16 more | 9 hr |
| Apr 14, 8:41 PM CDT | Severe Thunderstorm Watch | SPC | Bureau, Carroll, Henderson, Henry, Mercer, Putnam and 3 more | 4 hr |
| Apr 25, 7:47 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 32 more | 6 hr |
| Apr 26, 12:40 AM CDT | Severe Thunderstorm Watch | SPC | Edwards, Franklin, Gallatin, Hamilton, Hardin, Jackson and 10 more | 6 hr |
| Apr 28, 1:48 PM CDT | Severe Thunderstorm Watch | SPC | Bond, Calhoun, Clark, Clay, Clinton, Crawford and 20 more | 7 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Bureau County2
- Carroll County2
- Henry County2
- Mercer County2
- Putnam County2
- Rock Island County2
- Whiteside County2
- Bond County2
- Calhoun County2
- Clay County2
- Clinton County2
- Crawford County2
- Effingham County2
- Fayette County2
- Greene County2
- Jasper County2
- Jersey County2
- Lawrence County2
- Macoupin County2
- Madison County2
- Marion County2
- Montgomery County2
- Richland County2
- Saint Clair County2
- Shelby County2
- Washington County2
- Edwards County2
- Jefferson County2
- Wabash County2
- Wayne County2
- Boone County1
- DeKalb County1
- Jo Daviess County1
- Knox County1
- LaSalle County1
- Lee County1
- McLean County1
- Marshall County1
- Ogle County1
- Peoria County1
41 more counties
- Stark County1
- Stephenson County1
- Tazewell County1
- Winnebago County1
- Woodford County1
- Henderson County1
- Warren County1
- Adams County1
- Brown County1
- Cass County1
- Christian County1
- DeWitt County1
- Fulton County1
- Hancock County1
- Logan County1
- McDonough County1
- Macon County1
- Mason County1
- Menard County1
- Morgan County1
- Moultrie County1
- Piatt County1
- Pike County1
- Sangamon County1
- Schuyler County1
- Scott County1
- Franklin County1
- Gallatin County1
- Hamilton County1
- Hardin County1
- Jackson County1
- Johnson County1
- Massac County1
- Perry County1
- Pope County1
- Saline County1
- White County1
- Williamson County1
- Clark County1
- Cumberland County1
- Monroe County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20112013
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.