Alert archive / Illinois / Severe Thunderstorm Watches / 2017
Severe Thunderstorm Watches in Illinois, May 2017
7 severe thunderstorm watches in May 2017. 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 2017. Tap one for its archive.
- Severe Thunderstorm Watches
- 7
- Busiest day
- May 27, 20173 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 10, 12:59 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Bureau, Cass, DeWitt, Fulton and 22 more | 7 hr |
| May 10, 7:07 PM CDT | Severe Thunderstorm Watch | SPC | Champaign, Christian, Clark, Coles, Cumberland, Douglas and 6 more | 5 hr |
| May 15, 7:52 PM CDT | Severe Thunderstorm Watch | SPC | Boone, DeKalb, Jo Daviess, Kane, McHenry, Ogle and 2 more | 3 hr |
| May 19, 4:16 AM CDT | Severe Thunderstorm Watch | SPC | Bond, Calhoun, Clinton, Fayette, Greene, Jersey and 8 more | 3 hr |
| May 27, 1:36 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Clinton, Edwards, Franklin, Gallatin, Hamilton and 20 more | 7 hr |
| May 27, 5:13 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more | 7 hr |
| May 27, 6:26 PM CDT | Severe Thunderstorm Watch | SPC | Monroe, Randolph | 3 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Monroe County3
- Randolph County3
- Macon County2
- Clinton County2
- Madison County2
- Marion County2
- Saint Clair County2
- Washington County2
- Alexander County2
- Edwards County2
- Franklin County2
- Gallatin County2
- Hamilton County2
- Hardin County2
- Jackson County2
- Jefferson County2
- Johnson County2
- Massac County2
- Perry County2
- Pope County2
- Pulaski County2
- Saline County2
- Union County2
- Wabash County2
- Wayne County2
- White County2
- Williamson County2
- Adams County1
- Brown County1
- Bureau County1
- Cass County1
- DeWitt County1
- Fulton County1
- Hancock County1
- Henderson County1
- Henry County1
- Knox County1
- Logan County1
- McDonough County1
- McLean County1
40 more counties
- Marshall County1
- Mason County1
- Menard County1
- Mercer County1
- Morgan County1
- Peoria County1
- Putnam County1
- Rock Island County1
- Sangamon County1
- Schuyler County1
- Stark County1
- Tazewell County1
- Warren County1
- Woodford County1
- Champaign County1
- Christian County1
- Clark County1
- Coles County1
- Cumberland County1
- Douglas County1
- Edgar County1
- Moultrie County1
- Piatt County1
- Shelby County1
- Vermilion County1
- Boone County1
- DeKalb County1
- Jo Daviess County1
- Kane County1
- McHenry County1
- Ogle County1
- Stephenson County1
- Winnebago County1
- Bond County1
- Calhoun County1
- Fayette County1
- Greene County1
- Jersey County1
- Macoupin County1
- Montgomery County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20162018
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.