Alert archive / Illinois / Tornado Watches / 2020
Tornado Watches in Illinois, May 2020
1 tornado watches in May 2020. 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 tornado watches reaches back to 1997.
Tornado Watches by county
Each county as a circle sized by its count in May 2020. Tap one for its archive.
- Tornado Watches
- 1
- Busiest day
- May 23, 20201 tornado 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 |
|---|---|---|---|---|
| May 23, 12:33 PM CDT | Tornado Watch | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DeWitt and 35 more | 8 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Boone County1
- Bureau County1
- Carroll County1
- Cook County1
- DeKalb County1
- DeWitt County1
- DuPage County1
- Ford County1
- Fulton County1
- Grundy County1
- Henderson County1
- Henry County1
- Iroquois County1
- Jo Daviess County1
- Kane County1
- Kankakee County1
- Kendall County1
- Knox County1
- Lake County1
- LaSalle County1
- Lee County1
- Livingston County1
- Logan County1
- McDonough County1
- McHenry County1
- McLean County1
- Marshall County1
- Mason County1
- Mercer County1
- Ogle County1
- Peoria County1
- Putnam County1
- Rock Island County1
- Stark County1
- Stephenson County1
- Tazewell County1
- Warren County1
- Whiteside County1
- Will County1
- Winnebago County1
1 more counties
Nearby
Alerts in force nowTornadoes on recordThe radar archive20192021
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.