Alert archive / Illinois / Severe Thunderstorm Watches
Severe Thunderstorm Watches in Illinois, 1997
30 severe thunderstorm watches in 1997. 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 1997. Tap one for its archive.
- Severe Thunderstorm Watches
- 30
- Busiest month
- July8 severe thunderstorm watches
- Busiest day
- April 5, 19973 severe thunderstorm watches
Over time
By month
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 |
|---|---|---|---|---|
| Jan 4, 3:30 PM CST | Severe Thunderstorm Watch | SPC | Alexander, Bond, Clark, Clay, Clinton, Coles and 33 more | 6 hr |
| Feb 28, 5:15 PM CST | Severe Thunderstorm Watch | SPC | Hardin, Massac, Pope | 6 hr |
| Mar 28, 12:30 AM CST | Severe Thunderstorm Watch | SPC | Alexander, Massac, Pulaski | 6 hr |
| Apr 5, 2:30 PM CST | Severe Thunderstorm Watch | SPC | Bureau, Carroll, Henry, Jo Daviess, Knox, LaSalle and 8 more | 5 hr |
| Apr 5, 2:30 PM CST | Severe Thunderstorm Watch | SPC | Bond, Cass, Champaign, Christian, Clark, Clay and 34 more | 5 hr |
| Apr 5, 4:15 PM CST | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, DeKalb, DuPage, Grundy and 13 more | 4 hr |
| Apr 18, 9:15 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Bond, Calhoun, Clinton, Franklin, Greene and 18 more | 4 hr |
| Apr 20, 9:00 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Franklin, Hamilton, Jackson, Johnson, Perry and 6 more | 6 hr |
| Apr 30, 6:30 PM CDT | Severe Thunderstorm Watch | SPC | Gallatin, Hardin, Johnson, Massac, Pope, Saline and 1 more | 6 hr |
| May 2, 3:30 PM CDT | Severe Thunderstorm Watch | SPC | Madison, Monroe | 7 hr |
| May 5, 1:45 PM CDT | Severe Thunderstorm Watch | SPC | Champaign, Christian, Coles, Cook, DeWitt, Douglas and 17 more | 5 hr |
| May 7, 6:15 PM CDT | Severe Thunderstorm Watch | SPC | Mercer, Rock Island | 6 hr |
| May 18, 11:00 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Calhoun, Cass, Champaign, Christian and 28 more | 6 hr |
| Jun 21, 1:30 AM CDT | Severe Thunderstorm Watch | SPC | Mercer | 6 hr |
| Jun 21, 2:15 AM CDT | Severe Thunderstorm Watch | SPC | Boone, Carroll, Cook, DeKalb, DuPage, Jo Daviess and 9 more | 5 hr |
| Jun 21, 7:00 AM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Cook, DeKalb, DuPage, Ford and 18 more | 4 hr |
| Jul 14, 1:15 PM CDT | Severe Thunderstorm Watch | SPC | Bond, Champaign, Clark, Clay, Coles, Crawford and 14 more | 6 hr |
| Jul 14, 5:30 PM CDT | Severe Thunderstorm Watch | SPC | Clay, Edwards, Gallatin, Hamilton, Hardin, Johnson and 10 more | 6 hr |
| Jul 18, 10:30 AM CDT | Severe Thunderstorm Watch | SPC | Boone, Carroll, DeKalb, Jo Daviess, Lee, McHenry and 4 more | 6 hr |
| Jul 18, 1:45 PM CDT | Severe Thunderstorm Watch | SPC | Cook, DuPage, Grundy, Kane, Kankakee, Kendall and 4 more | 6 hr |
| Jul 18, 5:00 PM CDT | Severe Thunderstorm Watch | SPC | Champaign, Clark, Coles, Douglas, Edgar, Ford and 2 more | 5 hr |
| Jul 26, 7:15 PM CDT | Severe Thunderstorm Watch | SPC | Cook, DuPage, Kendall, Lake, Will | 6 hr |
| Jul 27, 8:45 AM CDT | Severe Thunderstorm Watch | SPC | Boone, Cook, DeKalb, DuPage, Kane, Kendall and 5 more | 4 hr |
| Jul 27, 4:00 PM CDT | Severe Thunderstorm Watch | SPC | Bureau, Cass, Champaign, Coles, DeWitt, Douglas and 34 more | 6 hr |
| Aug 3, 2:15 PM CDT | Severe Thunderstorm Watch | SPC | Brown, Bureau, Carroll, Cass, Fulton, Hancock and 24 more | 6 hr |
| Aug 16, 5:15 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 29 more | 6 hr |
| Aug 24, 2:00 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Bond, Brown, Cass, Christian, Clark and 38 more | 6 hr |
| Sep 16, 5:45 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, DeKalb, Henderson, Henry and 18 more | 6 hr |
| Sep 19, 11:00 AM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 19 more | 5 hr |
| Sep 19, 4:00 PM CDT | Severe Thunderstorm Watch | SPC | Bureau, Champaign, DeWitt, Ford, Grundy, Iroquois and 16 more | 5 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- LaSalle County10
- Will County10
- Bureau County9
- Lee County9
- Putnam County9
- Whiteside County9
- Ford County9
- Iroquois County9
- DuPage County9
- Kane County9
- McHenry County9
- Carroll County8
- Livingston County8
- Marshall County8
- Mercer County8
- Rock Island County8
- McLean County8
- Woodford County8
- Boone County8
- DeKalb County8
- Grundy County8
- Kankakee County8
- Kendall County8
- Ogle County8
- Winnebago County8
- Cook County8
- Lake County8
- Coles County7
- Jo Daviess County7
- Stark County7
- Champaign County7
- Douglas County7
- Logan County7
- Peoria County7
- Piatt County7
- Vermilion County7
- Stephenson County7
- Massac County6
- Henry County6
- DeWitt County6
62 more counties
- Edgar County6
- Mason County6
- Menard County6
- Moultrie County6
- Tazewell County6
- Bond County5
- Clark County5
- Clay County5
- Johnson County5
- Lawrence County5
- Pope County5
- Pulaski County5
- Richland County5
- Saline County5
- Williamson County5
- Knox County5
- Cass County5
- Fulton County5
- Macon County5
- Henderson County5
- Warren County5
- Alexander County4
- Crawford County4
- Cumberland County4
- Effingham County4
- Fayette County4
- Hardin County4
- Jasper County4
- Madison County4
- Montgomery County4
- Shelby County4
- Christian County4
- Macoupin County4
- Morgan County4
- Sangamon County4
- Hancock County4
- McDonough County4
- Schuyler County4
- Clinton County3
- Edwards County3
- Franklin County3
- Gallatin County3
- Hamilton County3
- Jackson County3
- Marion County3
- Monroe County3
- Perry County3
- Randolph County3
- Saint Clair County3
- Union County3
- Wabash County3
- Wayne County3
- White County3
- Greene County3
- Jersey County3
- Brown County3
- Scott County3
- Jefferson County2
- Washington County2
- Calhoun County2
- Adams County2
- Pike County2
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive19961998
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.