Alert archive / Illinois / Severe Thunderstorm Watches / 1997
Severe Thunderstorm Watches in Illinois, September 1997
3 severe thunderstorm watches in September 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 September 1997. Tap one for its archive.
- Severe Thunderstorm Watches
- 3
- Busiest day
- September 19, 19972 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 |
|---|---|---|---|---|
| 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.
- Bureau County3
- LaSalle County3
- Marshall County3
- Putnam County3
- Stark County3
- Boone County2
- Carroll County2
- DeKalb County2
- Henry County2
- Jo Daviess County2
- Kane County2
- Lee County2
- McHenry County2
- Mercer County2
- Ogle County2
- Peoria County2
- Rock Island County2
- Stephenson County2
- Whiteside County2
- Winnebago County2
- Woodford County2
- Grundy County2
- Will County2
- Henderson County1
- Knox County1
- Warren County1
- Cook County1
- DuPage County1
- Kendall County1
- Lake County1
- Champaign County1
- DeWitt County1
- Ford County1
- Iroquois County1
- Kankakee County1
- Livingston County1
- Logan County1
- McLean County1
- Mason County1
- Menard County1
3 more counties
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. Warning verification from the Mesonet's Cow. Rebuilt daily.