Alert archive / Iowa / Tornado Watches / 2011
Tornado Watches in Iowa, March 2011
2 tornado watches in March 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 March 2011. Tap one for its archive.
- Tornado Watches
- 2
- Busiest day
- March 22, 20111 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 |
|---|---|---|---|---|
| Mar 22, 2:03 PM CDT | Tornado Watch | SPC | Adair, Adams, Appanoose, Audubon, Boone, Calhoun and 38 more | 7 hr |
| Mar 22, 8:35 PM CDT | Tornado Watch | SPC | Appanoose, Davis, Henry, Jefferson, Keokuk, Lucas and 7 more | 5 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Appanoose County2
- Davis County2
- Lucas County2
- Mahaska County2
- Marion County2
- Monroe County2
- Wapello County2
- Wayne County2
- Adair County1
- Adams County1
- Audubon County1
- Boone County1
- Calhoun County1
- Carroll County1
- Cass County1
- Clarke County1
- Crawford County1
- Dallas County1
- Decatur County1
- Fremont County1
- Greene County1
- Guthrie County1
- Harrison County1
- Ida County1
- Jasper County1
- Madison County1
- Marshall County1
- Mills County1
- Monona County1
- Montgomery County1
- Page County1
- Polk County1
- Pottawattamie County1
- Poweshiek County1
- Ringgold County1
- Sac County1
- Shelby County1
- Story County1
- Tama County1
- Taylor 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.