Alert archive / Iowa / Tornado Watches / 2011
Tornado Watches in Iowa, April 2011
5 tornado watches in April 2011. 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 April 2011. Tap one for its archive.
- Tornado Watches
- 5
- Busiest day
- April 10, 20113 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 |
|---|---|---|---|---|
| Apr 3, 5:57 PM CDT | Tornado Watch | SPC | Appanoose, Cedar, Clinton, Davis, Delaware, Des Moines and 20 more | 6 hr |
| Apr 9, 5:48 PM CDT | Tornado Watch | SPC | Audubon, Boone, Buena Vista, Calhoun, Carroll, Cass and 36 more | 7 hr |
| Apr 9, 11:01 PM CDT | Tornado Watch | SPC | Allamakee, Bremer, Buena Vista, Butler, Cerro Gordo, Cherokee and 19 more | 5 hr |
| Apr 10, 3:19 PM CDT | Tornado Watch | SPC | Allamakee, Clayton, Fayette, Howard, Winneshiek | 7 hr |
| Apr 10, 6:05 PM CDT | Tornado Watch | SPC | Clinton, Des Moines, Jackson, Lee, Louisa, Muscatine and 1 more | 7 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Clinton County2
- Des Moines County2
- Jackson County2
- Lee County2
- Louisa County2
- Muscatine County2
- Scott County2
- Buena Vista County2
- Cerro Gordo County2
- Cherokee County2
- Clay County2
- Emmet County2
- Franklin County2
- Hancock County2
- Humboldt County2
- Kossuth County2
- O'Brien County2
- Palo Alto County2
- Pocahontas County2
- Winnebago County2
- Worth County2
- Wright County2
- Allamakee County2
- Clayton County2
- Fayette County2
- Howard County2
- Winneshiek County2
- Appanoose County1
- Cedar County1
- Davis County1
- Delaware County1
- Dubuque County1
- Henry County1
- Iowa County1
- Jefferson County1
- Johnson County1
- Jones County1
- Keokuk County1
- Linn County1
- Lucas County1
38 more counties
- Mahaska County1
- Monroe County1
- Van Buren County1
- Wapello County1
- Washington County1
- Wayne County1
- Audubon County1
- Boone County1
- Calhoun County1
- Carroll County1
- Cass County1
- Crawford County1
- Dickinson County1
- Fremont County1
- Greene County1
- Guthrie County1
- Hamilton County1
- Hardin County1
- Harrison County1
- Ida County1
- Lyon County1
- Mills County1
- Monona County1
- Montgomery County1
- Osceola County1
- Page County1
- Plymouth County1
- Pottawattamie County1
- Sac County1
- Shelby County1
- Sioux County1
- Webster County1
- Woodbury County1
- Bremer County1
- Butler County1
- Chickasaw County1
- Floyd County1
- Mitchell County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20102012
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.