Alert archive / Illinois / Severe Thunderstorm Watches / 2009
Severe Thunderstorm Watches in Illinois, May 2009
8 severe thunderstorm watches in May 2009. 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 2009. Tap one for its archive.
- Severe Thunderstorm Watches
- 8
- Busiest day
- May 14, 20093 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 7, 6:14 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Bond, Brown, Calhoun, Cass, Champaign and 39 more | 8 hr |
| May 7, 10:17 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Franklin, Gallatin, Hardin, Jackson, Johnson and 9 more | 8 hr |
| May 8, 6:10 PM CDT | Severe Thunderstorm Watch | SPC | Bureau, Carroll, Henderson, Henry, Jo Daviess, Knox and 13 more | 4 hr |
| May 13, 9:56 PM CDT | Severe Thunderstorm Watch | SPC | Bond, Calhoun, Cass, Christian, Clark, Clay and 27 more | 6 hr |
| May 13, 10:51 PM CDT | Severe Thunderstorm Watch | SPC | Champaign, Cook, DeWitt, DuPage, Ford, Grundy and 12 more | 4 hr |
| May 14, 1:01 AM CDT | Severe Thunderstorm Watch | SPC | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more | 5 hr |
| May 15, 6:30 PM CDT | Severe Thunderstorm Watch | SPC | Randolph | 6 hr |
| May 30, 3:49 PM CDT | Severe Thunderstorm Watch | SPC | Bond, Christian, Clark, Clay, Clinton, Coles and 20 more | 11 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Bond County3
- Christian County3
- Clark County3
- Clay County3
- Clinton County3
- Coles County3
- Crawford County3
- Cumberland County3
- Douglas County3
- Edgar County3
- Edwards County3
- Effingham County3
- Fayette County3
- Jasper County3
- Jefferson County3
- Lawrence County3
- Macon County3
- Marion County3
- Montgomery County3
- Moultrie County3
- Piatt County3
- Richland County3
- Shelby County3
- Wabash County3
- Washington County3
- Wayne County3
- Randolph County3
- Calhoun County2
- Cass County2
- Champaign County2
- Greene County2
- Hamilton County2
- Jersey County2
- Macoupin County2
- Madison County2
- Menard County2
- Morgan County2
- Pike County2
- Saint Clair County2
- Sangamon County2
52 more counties
- Scott County2
- Vermilion County2
- White County2
- Alexander County2
- Franklin County2
- Gallatin County2
- Hardin County2
- Jackson County2
- Johnson County2
- Massac County2
- Monroe County2
- Perry County2
- Pope County2
- Pulaski County2
- Saline County2
- Union County2
- Williamson County2
- Adams County1
- Brown County1
- Schuyler County1
- Bureau County1
- Carroll County1
- Henderson County1
- Henry County1
- Jo Daviess County1
- Knox County1
- Lee County1
- Marshall County1
- Mercer County1
- Ogle County1
- Peoria County1
- Putnam County1
- Rock Island County1
- Stark County1
- Stephenson County1
- Warren County1
- Whiteside County1
- Winnebago County1
- Woodford County1
- Cook County1
- DeWitt County1
- DuPage County1
- Ford County1
- Grundy County1
- Iroquois County1
- Kankakee County1
- Kendall County1
- Lake County1
- Livingston County1
- Logan County1
- McLean County1
- Will County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20082010
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.