Alert archive / Illinois / Severe Thunderstorm Watches
Severe Thunderstorm Watches in Illinois, 1998
50 severe thunderstorm watches in 1998. 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 1998. Tap one for its archive.
- Severe Thunderstorm Watches
- 50
- Busiest month
- June18 severe thunderstorm watches
- Busiest day
- June 18, 19983 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 |
|---|---|---|---|---|
| Mar 27, 6:15 PM CST | Severe Thunderstorm Watch | SPC | Boone, Brown, Bureau, Cass, Cook, DeKalb and 33 more | 5 hr |
| Mar 27, 8:45 PM CST | Severe Thunderstorm Watch | SPC | Clark, Clay, Crawford, Cumberland, Edwards, Effingham and 21 more | 4 hr |
| Mar 30, 2:45 PM CST | Severe Thunderstorm Watch | SPC | Boone, Carroll, Jo Daviess, Stephenson, Winnebago | 6 hr |
| Mar 30, 3:45 PM CST | Severe Thunderstorm Watch | SPC | Henderson, Mercer, Rock Island, Whiteside | 5 hr |
| Apr 13, 11:30 AM CDT | Severe Thunderstorm Watch | SPC | Adams, Pike | 6 hr |
| May 2, 2:00 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Bond, Calhoun, Clay, Clinton, Crawford and 28 more | 5 hr |
| May 2, 4:00 PM CDT | Severe Thunderstorm Watch | SPC | Gallatin, Hardin, Massac, Pope, Wabash | 5 hr |
| May 12, 4:15 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Boone, Brown, Bureau, Calhoun, Carroll and 25 more | 6 hr |
| May 19, 2:00 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 30 more | 5 hr |
| May 19, 6:00 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Bureau, Cass, Champaign, Christian and 37 more | 6 hr |
| May 19, 9:00 PM CDT | Severe Thunderstorm Watch | SPC | Clark, Clay, Coles, Crawford, Cumberland, Edwards and 10 more | 5 hr |
| May 20, 1:15 PM CDT | Severe Thunderstorm Watch | SPC | Crawford, Edwards, Gallatin, Hardin, Johnson, Lawrence and 6 more | 6 hr |
| May 21, 11:30 AM CDT | Severe Thunderstorm Watch | SPC | Alexander, Bond, Calhoun, Clinton, Edwards, Franklin and 23 more | 6 hr |
| May 21, 4:00 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Gallatin, Hardin, Johnson, Massac, Pope and 6 more | 5 hr |
| May 22, 2:00 AM CDT | Severe Thunderstorm Watch | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 33 more | 5 hr |
| May 23, 3:15 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Bond, Calhoun, Clinton, Fayette, Franklin and 16 more | 6 hr |
| May 24, 12:00 AM CDT | Severe Thunderstorm Watch | SPC | Adams, Bond, Brown, Calhoun, Cass, Champaign and 31 more | 6 hr |
| May 25, 3:15 AM CDT | Severe Thunderstorm Watch | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 10 more | 6 hr |
| May 28, 6:30 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Carroll, Cook, DeKalb, DuPage, Jo Daviess and 8 more | 7 hr |
| May 28, 11:30 PM CDT | Severe Thunderstorm Watch | SPC | Henderson | 6 hr |
| May 31, 3:00 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Clay, Crawford, Edwards, Effingham, Franklin and 21 more | 6 hr |
| Jun 4, 2:30 PM CDT | Severe Thunderstorm Watch | SPC | Calhoun, Jersey, Macoupin, Madison, Monroe, Saint Clair | 7 hr |
| Jun 11, 2:30 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Bond, Brown, Calhoun, Cass, Champaign and 43 more | 7 hr |
| Jun 14, 6:45 AM CDT | Severe Thunderstorm Watch | SPC | Alexander, Bond, Calhoun, Christian, Clark, Clay and 42 more | 6 hr |
| Jun 18, 12:00 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Bond, Brown, Calhoun, Cass, Fulton and 14 more | 5 hr |
| Jun 18, 4:00 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Boone, Brown, Bureau, Calhoun, Carroll and 34 more | 5 hr |
| Jun 18, 6:15 PM CDT | Severe Thunderstorm Watch | SPC | Bond, Clinton, Madison, Monroe, Randolph, Saint Clair and 1 more | 6 hr |
| Jun 18, 7:30 PM CDT | Severe Thunderstorm Watch | SPC | Champaign, Christian, Clark, Coles, Cook, Crawford and 26 more | 7 hr |
| Jun 18, 10:30 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Clay, Edwards, Franklin, Gallatin, Hamilton and 17 more | 6 hr |
| Jun 20, 12:00 AM CDT | Severe Thunderstorm Watch | SPC | Alexander, Gallatin, Hardin, Jackson, Johnson, Massac and 5 more | 5 hr |
| Jun 20, 7:00 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Carroll, DeKalb, Jo Daviess, Lee, McHenry and 4 more | 6 hr |
| Jun 22, 11:30 AM CDT | Severe Thunderstorm Watch | SPC | Clark, Crawford, Edwards, Franklin, Gallatin, Hamilton and 10 more | 6 hr |
| Jun 24, 12:00 AM CDT | Severe Thunderstorm Watch | SPC | Carroll, Henderson, Henry, Jo Daviess, Knox, Mercer and 5 more | 6 hr |
| Jun 25, 7:30 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Carroll, DeKalb, Jo Daviess, Kane, McHenry and 3 more | 5 hr |
| Jun 27, 2:45 AM CDT | Severe Thunderstorm Watch | SPC | Boone, Carroll, Jo Daviess, Stephenson, Winnebago | 4 hr |
| Jun 28, 12:30 AM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 26 more | 5 hr |
| Jun 28, 6:15 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Bond, Brown, Calhoun, Cass, Champaign and 26 more | 6 hr |
| Jun 28, 10:00 PM CDT | Severe Thunderstorm Watch | SPC | Champaign, Clark, Clay, Coles, Crawford, Cumberland and 14 more | 5 hr |
| Jun 29, 12:00 AM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Calhoun, Cass, Christian, DeWitt and 26 more | 6 hr |
| Jul 7, 3:00 PM CDT | Severe Thunderstorm Watch | SPC | Clark, Clay, Crawford, Edwards, Hamilton, Jasper and 6 more | 6 hr |
| Jul 19, 1:30 AM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, Henry, Jo Daviess, Lee and 7 more | 6 hr |
| Jul 19, 4:15 AM CDT | Severe Thunderstorm Watch | SPC | Cook, DeKalb, DuPage, Grundy, Iroquois, Kane and 7 more | 4 hr |
| Jul 20, 4:00 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Jo Daviess, McHenry, Stephenson, Winnebago | 5 hr |
| Jul 20, 7:30 PM CDT | Severe Thunderstorm Watch | SPC | Cook, DuPage, Grundy, Kankakee, Lake, Will | 6 hr |
| Jul 21, 9:00 AM CDT | Severe Thunderstorm Watch | SPC | Jo Daviess | 4 hr |
| Jul 22, 3:00 PM CDT | Severe Thunderstorm Watch | SPC | Clark, Crawford, Edgar, Vermilion | 5 hr |
| Aug 24, 10:15 AM CDT | Severe Thunderstorm Watch | SPC | Boone, Carroll, Cook, DeKalb, DuPage, Jo Daviess and 10 more | 6 hr |
| Aug 24, 10:00 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 25 more | 5 hr |
| Oct 29, 3:15 PM CST | Severe Thunderstorm Watch | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 28 more | 5 hr |
| Nov 10, 4:00 AM CST | Severe Thunderstorm Watch | SPC | Boone, Bureau, Cook, DeKalb, DuPage, Ford and 26 more | 5 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Boone County15
- Jo Daviess County15
- Pike County14
- Stephenson County14
- Winnebago County14
- Calhoun County14
- Scott County13
- Carroll County13
- Jersey County13
- Macoupin County13
- Fulton County12
- Knox County12
- Morgan County12
- Ogle County12
- Peoria County12
- Henderson County12
- Whiteside County12
- Madison County12
- Montgomery County12
- Brown County11
- Cass County11
- DeKalb County11
- Kankakee County11
- Lee County11
- McLean County11
- Mason County11
- Sangamon County11
- Schuyler County11
- Stark County11
- Crawford County11
- Fayette County11
- Johnson County11
- Saline County11
- White County11
- Williamson County11
- Adams County11
- Bond County11
- Greene County11
- McDonough County11
- McHenry County11
62 more counties
- Cook County10
- DuPage County10
- Ford County10
- Grundy County10
- Kane County10
- Lake County10
- Livingston County10
- Menard County10
- Moultrie County10
- Tazewell County10
- Edwards County10
- Gallatin County10
- Hardin County10
- Massac County10
- Pulaski County10
- Richland County10
- Shelby County10
- Union County10
- Mercer County10
- Saint Clair County10
- Hancock County10
- Warren County10
- Bureau County9
- DeWitt County9
- LaSalle County9
- Logan County9
- Macon County9
- Marshall County9
- Piatt County9
- Putnam County9
- Will County9
- Woodford County9
- Clay County9
- Franklin County9
- Hamilton County9
- Jasper County9
- Jefferson County9
- Lawrence County9
- Pope County9
- Wabash County9
- Wayne County9
- Alexander County9
- Clinton County9
- Jackson County9
- Henry County9
- Christian County9
- Kendall County8
- Clark County8
- Effingham County8
- Marion County8
- Rock Island County8
- Monroe County8
- Washington County8
- Perry County7
- Randolph County7
- Iroquois County7
- Cumberland County6
- Champaign County6
- Coles County5
- Douglas County5
- Edgar County5
- Vermilion County4
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive19971999
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.