Alert archive / Illinois / Severe Thunderstorm Watches / 1999
Severe Thunderstorm Watches in Illinois, August 1999
4 severe thunderstorm watches in August 1999. 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 1999. Tap one for its archive.
- Severe Thunderstorm Watches
- 4
- Busiest day
- August 23, 19992 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 13, 12:00 AM CDT | Severe Thunderstorm Watch | SPC | Alexander, Bond, Clay, Clinton, Crawford, Cumberland and 28 more | 5 hr |
| Aug 23, 2:00 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Boone, Brown, Bureau, Calhoun, Carroll and 31 more | 6 hr |
| Aug 23, 6:00 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Cass, DeWitt, Ford, Fulton and 20 more | 6 hr |
| Aug 23, 7:15 PM CDT | Severe Thunderstorm Watch | SPC | Bond, Calhoun, Champaign, Christian, Clark, Clay and 22 more | 5 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Jersey County3
- Bond County2
- Clay County2
- Clinton County2
- Cumberland County2
- Effingham County2
- Fayette County2
- Jasper County2
- Macoupin County2
- Madison County2
- Marion County2
- Monroe County2
- Montgomery County2
- Randolph County2
- Saint Clair County2
- Washington County2
- Adams County2
- Brown County2
- Calhoun County2
- Cass County2
- Fulton County2
- McDonough County2
- Marshall County2
- Mason County2
- Menard County2
- Morgan County2
- Peoria County2
- Pike County2
- Putnam County2
- Schuyler County2
- Scott County2
- Tazewell County2
- Alexander County1
- Crawford County1
- Edwards County1
- Franklin County1
- Hamilton County1
- Jackson County1
- Jefferson County1
- Johnson County1
52 more counties
- Lawrence County1
- Perry County1
- Pulaski County1
- Richland County1
- Saline County1
- Union County1
- Wabash County1
- Wayne County1
- White County1
- Williamson County1
- Boone County1
- Bureau County1
- Carroll County1
- DeKalb County1
- Greene County1
- Hancock County1
- Henderson County1
- Henry County1
- Jo Daviess County1
- Knox County1
- Lee County1
- McHenry County1
- Mercer County1
- Ogle County1
- Rock Island County1
- Stark County1
- Stephenson County1
- Warren County1
- Whiteside County1
- Winnebago County1
- DeWitt County1
- Ford County1
- Grundy County1
- Iroquois County1
- Kankakee County1
- LaSalle County1
- Livingston County1
- Logan County1
- McLean County1
- Sangamon County1
- Woodford County1
- Champaign County1
- Christian County1
- Clark County1
- Coles County1
- Douglas County1
- Edgar County1
- Macon County1
- Moultrie County1
- Piatt County1
- Shelby County1
- Vermilion County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive19982000
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.