Alert archive / Iowa / Tornado Watches / 2018
Tornado Watches in Iowa, September 2018
3 tornado watches in September 2018. 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 2018. Tap one for its archive.
- Tornado Watches
- 3
- Busiest day
- September 3, 20181 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 3, 6:09 PM CDT | Tornado Watch | SPC | Benton, Black Hawk, Buchanan, Delaware, Dubuque, Iowa and 6 more | 2 hr |
| Sep 4, 3:35 PM CDT | Tornado Watch | SPC | Allamakee, Audubon, Boone, Bremer, Butler, Calhoun and 26 more | 7 hr |
| Sep 20, 6:23 PM CDT | Tornado Watch | SPC | Allamakee, Chickasaw, Floyd, Howard, Mitchell, Winneshiek | 5 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Allamakee County2
- Chickasaw County2
- Floyd County2
- Howard County2
- Mitchell County2
- Winneshiek County2
- Benton County1
- Black Hawk County1
- Buchanan County1
- Delaware County1
- Dubuque County1
- Iowa County1
- Jackson County1
- Jones County1
- Linn County1
- Mahaska County1
- Poweshiek County1
- Tama County1
- Audubon County1
- Boone County1
- Bremer County1
- Butler County1
- Calhoun County1
- Carroll County1
- Cerro Gordo County1
- Dallas County1
- Emmet County1
- Franklin County1
- Greene County1
- Grundy County1
- Guthrie County1
- Hamilton County1
- Hancock County1
- Hardin County1
- Humboldt County1
- Kossuth County1
- Palo Alto County1
- Pocahontas County1
- Polk County1
- Story County1
4 more counties
Nearby
Alerts in force nowTornadoes on recordThe radar archive20172019
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.