Alert archive / Iowa / Tornado Watches
Tornado Watches in Iowa, 2018
14 tornado watches in 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 2018. Tap one for its archive.
- Tornado Watches
- 14
- Busiest month
- June4 tornado watches
- Busiest day
- October 9, 20182 tornado watches
Over time
By month
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 |
|---|---|---|---|---|
| Apr 13, 2:19 PM CDT | Tornado Watch | SPC | Adair, Adams, Appanoose, Cass, Clarke, Davis and 17 more | 7 hr |
| May 1, 2:47 PM CDT | Tornado Watch | SPC | Harrison, Monona, Pottawattamie, Shelby | 9 hr |
| May 2, 5:27 PM CDT | Tornado Watch | SPC | Adams, Appanoose, Clarke, Davis, Decatur, Lucas and 9 more | 8 hr |
| Jun 9, 2:26 PM CDT | Tornado Watch | SPC | Allamakee, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 18 more | 5 hr |
| Jun 11, 3:42 PM CDT | Tornado Watch | SPC | Adair, Adams, Audubon, Buena Vista, Calhoun, Carroll and 30 more | 6 hr |
| Jun 20, 3:04 PM CDT | Tornado Watch | SPC | Benton, Black Hawk, Boone, Bremer, Buchanan, Butler and 30 more | 4 hr |
| Jun 25, 5:40 PM CDT | Tornado Watch | SPC | Adair, Adams, Audubon, Boone, Carroll, Cass and 13 more | 3 hr |
| Jul 19, 3:11 PM CDT | Tornado Watch | SPC | Appanoose, Benton, Davis, Grundy, Hardin, Henry and 21 more | 6 hr |
| 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 |
| Oct 8, 5:33 PM CDT | Tornado Watch | SPC | Adair, Adams, Appanoose, Cass, Clarke, Decatur and 11 more | 4 hr |
| Oct 9, 1:46 PM CDT | Tornado Watch | SPC | Adair, Adams, Appanoose, Benton, Black Hawk, Boone and 36 more | 7 hr |
| Oct 9, 5:09 PM CDT | Tornado Watch | SPC | Allamakee, Clayton, Fayette | 4 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Mahaska County7
- Adams County6
- Lucas County6
- Ringgold County6
- Union County6
- Wapello County6
- Wayne County6
- Adair County5
- Appanoose County5
- Clarke County5
- Decatur County5
- Madison County5
- Marion County5
- Monroe County5
- Taylor County5
- Warren County5
- Grundy County5
- Hardin County5
- Tama County5
- Polk County5
- Cass County4
- Davis County4
- Allamakee County4
- Black Hawk County4
- Bremer County4
- Buchanan County4
- Butler County4
- Delaware County4
- Franklin County4
- Marshall County4
- Greene County4
- Benton County4
- Boone County4
- Dallas County4
- Iowa County4
- Linn County4
- Poweshiek County4
- Story County4
- Page County3
- Pottawattamie County3
57 more counties
- Chickasaw County3
- Floyd County3
- Howard County3
- Mitchell County3
- Winneshiek County3
- Wright County3
- Audubon County3
- Carroll County3
- Guthrie County3
- Hamilton County3
- Jasper County3
- Jefferson County3
- Johnson County3
- Keokuk County3
- Washington County3
- Fremont County2
- Mills County2
- Montgomery County2
- Harrison County2
- Monona County2
- Shelby County2
- Cerro Gordo County2
- Clayton County2
- Dubuque County2
- Fayette County2
- Hancock County2
- Winnebago County2
- Worth County2
- Calhoun County2
- Crawford County2
- Emmet County2
- Palo Alto County2
- Pocahontas County2
- Henry County2
- Humboldt County2
- Jones County2
- Webster County2
- Van Buren County2
- Buena Vista County1
- Cherokee County1
- Clay County1
- Dickinson County1
- Ida County1
- Lyon County1
- O'Brien County1
- Osceola County1
- Plymouth County1
- Sac County1
- Sioux County1
- Woodbury County1
- Cedar County1
- Des Moines County1
- Louisa County1
- Muscatine County1
- Lee County1
- Jackson County1
- Kossuth County1
The busiest days
Days with the most alerts issued, by UTC date.
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. Rebuilt daily.