Alert archive / Illinois / Severe Thunderstorm Watches / 2004
Severe Thunderstorm Watches in Illinois, August 2004
12 severe thunderstorm watches in August 2004. 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 August 2004. Tap one for its archive.
- Severe Thunderstorm Watches
- 12
- Busiest day
- August 27, 20044 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 |
|---|---|---|---|---|
| Aug 3, 8:40 AM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Calhoun, Greene, Jersey, Monroe and 2 more | 5 hr |
| Aug 3, 7:55 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Cook, DeKalb, DuPage, Ford and 21 more | 5 hr |
| Aug 3, 9:45 PM CDT | Severe Thunderstorm Watch | SPC | Fulton, Hancock, Henderson, Henry, Knox, McDonough and 3 more | 5 hr |
| Aug 3, 11:30 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Calhoun, Cass, Champaign, Christian and 32 more | 6 hr |
| Aug 17, 1:20 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Bureau, Calhoun, Cass, Champaign and 41 more | 6 hr |
| Aug 18, 5:35 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Cass, Champaign, Christian, Clark and 28 more | 5 hr |
| Aug 24, 1:20 PM CDT | Severe Thunderstorm Watch | SPC | Bond, Clinton, Fayette, Franklin, Jackson, Jefferson and 9 more | 6 hr |
| Aug 25, 3:15 PM CDT | Severe Thunderstorm Watch | SPC | Monroe, Saint Clair | 6 hr |
| Aug 26, 9:45 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Carroll, Henderson, Henry, Jo Daviess, Mercer and 5 more | 6 hr |
| Aug 27, 1:25 AM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Cook, DeKalb, DeWitt, DuPage and 25 more | 6 hr |
| Aug 27, 9:40 AM CDT | Severe Thunderstorm Watch | SPC | Brown, Calhoun, Cass, Greene, Jersey, Macoupin and 7 more | 5 hr |
| Aug 27, 2:45 PM CDT | Severe Thunderstorm Watch | SPC | Calhoun, Cass, Greene, Jersey, Morgan, Pike and 1 more | 6 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Fulton County6
- Brown County5
- Calhoun County5
- Greene County5
- Pike County5
- McLean County5
- Peoria County5
- Tazewell County5
- Woodford County5
- Hancock County5
- McDonough County5
- Cass County5
- Mason County5
- Morgan County5
- Adams County4
- Jersey County4
- Ford County4
- Iroquois County4
- Kankakee County4
- Livingston County4
- Henderson County4
- Knox County4
- Mercer County4
- Schuyler County4
- Warren County4
- DeWitt County4
- Menard County4
- Sangamon County4
- Scott County4
- Monroe County3
- Boone County3
- Bureau County3
- Cook County3
- DeKalb County3
- DuPage County3
- Grundy County3
- Kane County3
- Kendall County3
- Lake County3
- LaSalle County3
44 more counties
- Lee County3
- Marshall County3
- Putnam County3
- Stark County3
- Will County3
- Henry County3
- Champaign County3
- Logan County3
- Macon County3
- Piatt County3
- Randolph County2
- McHenry County2
- Ogle County2
- Winnebago County2
- Christian County2
- Coles County2
- Douglas County2
- Edgar County2
- Macoupin County2
- Moultrie County2
- Shelby County2
- Vermilion County2
- Madison County2
- Saint Clair County2
- Montgomery County1
- Clark County1
- Crawford County1
- Cumberland County1
- Bond County1
- Clinton County1
- Fayette County1
- Franklin County1
- Jackson County1
- Jefferson County1
- Marion County1
- Perry County1
- Union County1
- Washington County1
- Williamson County1
- Carroll County1
- Jo Daviess County1
- Rock Island County1
- Stephenson County1
- Whiteside County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20032005
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.