Alert archive / Illinois / Severe Thunderstorm Watches / 2018
Severe Thunderstorm Watches in Illinois, May 2018
6 severe thunderstorm watches in May 2018. 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 2018. Tap one for its archive.
- Severe Thunderstorm Watches
- 6
- Busiest day
- May 3, 20182 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 2, 3:56 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 33 more | 9 hr |
| May 2, 10:51 PM CDT | Severe Thunderstorm Watch | SPC | Cass, Cook, DeKalb, DuPage, Ford, Fulton and 23 more | 4 hr |
| May 2, 11:09 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Calhoun, Greene, Jersey, Macoupin and 5 more | 7 hr |
| May 14, 2:54 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Bond, Boone, Brown, Bureau, Calhoun and 59 more | 6 hr |
| May 20, 12:32 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 9 more | 6 hr |
| May 31, 10:31 AM CDT | Severe Thunderstorm Watch | SPC | Clark, Clay, Crawford, Cumberland, Edwards, Effingham and 8 more | 6 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Cook County3
- DeKalb County3
- DuPage County3
- Ford County3
- Fulton County3
- Grundy County3
- Iroquois County3
- Kane County3
- Kankakee County3
- Kendall County3
- Knox County3
- LaSalle County3
- Lee County3
- Livingston County3
- McLean County3
- Marshall County3
- Peoria County3
- Stark County3
- Tazewell County3
- Will County3
- Woodford County3
- Boone County2
- Bureau County2
- Hancock County2
- Henderson County2
- Henry County2
- Lake County2
- McDonough County2
- McHenry County2
- Mercer County2
- Ogle County2
- Putnam County2
- Rock Island County2
- Warren County2
- Whiteside County2
- Winnebago County2
- Cass County2
- Logan County2
- Mason County2
- Menard County2
55 more counties
- Morgan County2
- Sangamon County2
- Schuyler County2
- Scott County2
- Adams County2
- Brown County2
- Calhoun County2
- Greene County2
- Jersey County2
- Macoupin County2
- Madison County2
- Monroe County2
- Pike County2
- Saint Clair County2
- Gallatin County2
- Hamilton County2
- White County2
- Carroll County1
- Jo Daviess County1
- Stephenson County1
- Randolph County1
- Bond County1
- Champaign County1
- Christian County1
- Clinton County1
- DeWitt County1
- Fayette County1
- Macon County1
- Montgomery County1
- Moultrie County1
- Piatt County1
- Shelby County1
- Alexander County1
- Franklin County1
- Hardin County1
- Jackson County1
- Johnson County1
- Massac County1
- Perry County1
- Pope County1
- Pulaski County1
- Saline County1
- Union County1
- Williamson County1
- Clark County1
- Clay County1
- Crawford County1
- Cumberland County1
- Edwards County1
- Effingham County1
- Jasper County1
- Lawrence County1
- Richland County1
- Wabash County1
- Wayne County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20172019
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.