Alert archive / Iowa / Tornado Watches / 1999
Tornado Watches in Iowa, September 1999
2 tornado watches in September 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 September 1999. Tap one for its archive.
- Tornado Watches
- 2
- Busiest day
- September 7, 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 |
|---|---|---|---|---|
| Sep 7, 5:15 PM CDT | Tornado Watch | SPC | Audubon, Buena Vista, Calhoun, Carroll, Cherokee, Clay and 21 more | 6 hr |
| Sep 7, 6:15 PM CDT | Tornado Watch | SPC | Adair, Adams, Boone, Bremer, Butler, Cass and 27 more | 6 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Hancock County2
- Audubon County1
- Buena Vista County1
- Calhoun County1
- Carroll County1
- Cherokee County1
- Clay County1
- Crawford County1
- Dickinson County1
- Emmet County1
- Fremont County1
- Harrison County1
- Humboldt County1
- Ida County1
- Kossuth County1
- Mills County1
- Monona County1
- O'Brien County1
- Osceola County1
- Palo Alto County1
- Plymouth County1
- Pocahontas County1
- Pottawattamie County1
- Sac County1
- Shelby County1
- Winnebago County1
- Woodbury County1
- Adair County1
- Adams County1
- Boone County1
- Bremer County1
- Butler County1
- Cass County1
- Cerro Gordo County1
- Chickasaw County1
- Clarke County1
- Dallas County1
- Floyd County1
- Franklin County1
- Greene 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.