Alert archive / Illinois / Tornado Watches / 1999
Tornado Watches in Illinois, May 1999
4 tornado watches in May 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 tornado watches reaches back to 1997.
Tornado Watches by county
Each county as a circle sized by its count in May 1999. Tap one for its archive.
- Tornado Watches
- 4
- Busiest day
- May 4, 19992 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 4, 4:45 PM CDT | Tornado Watch | SPC | Calhoun, Greene, Jersey | 5 hr |
| May 4, 5:45 PM CDT | Tornado Watch | SPC | Alexander, Franklin, Jackson, Union | 4 hr |
| May 5, 3:00 PM CDT | Tornado Watch | SPC | Alexander, Clark, Clay, Coles, Crawford, Cumberland and 23 more | 6 hr |
| May 16, 9:00 PM CDT | Tornado Watch | SPC | Jo Daviess | 6 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Alexander County2
- Franklin County2
- Jackson County2
- Union County2
- Calhoun County1
- Greene County1
- Jersey County1
- Clark County1
- Clay County1
- Coles County1
- Crawford County1
- Cumberland County1
- Edgar County1
- Edwards County1
- Effingham County1
- Gallatin County1
- Hamilton County1
- Hardin County1
- Jasper County1
- Jefferson County1
- Johnson County1
- Lawrence County1
- Marion County1
- Massac County1
- Pope County1
- Pulaski County1
- Richland County1
- Saline County1
- Wabash County1
- Wayne County1
- White County1
- Williamson County1
- Jo Daviess 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.