Alert archive / Iowa / Tornado Watches / 2009
Tornado Watches in Iowa, April 2009
2 tornado watches in April 2009. 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 2009. Tap one for its archive.
- Tornado Watches
- 2
- Busiest day
- April 26, 20092 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 26, 12:48 PM CDT | Tornado Watch | SPC | Adair, Adams, Audubon, Boone, Butler, Calhoun and 33 more | 4 hr |
| Apr 26, 5:02 PM CDT | Tornado Watch | SPC | Adair, Adams, Allamakee, Appanoose, Benton, Black Hawk and 41 more | 6 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Adair County2
- Adams County2
- Boone County2
- Butler County2
- Cass County2
- Clarke County2
- Dallas County2
- Decatur County2
- Franklin County2
- Greene County2
- Grundy County2
- Guthrie County2
- Hamilton County2
- Hardin County2
- Jasper County2
- Madison County2
- Marshall County2
- Polk County2
- Ringgold County2
- Story County2
- Taylor County2
- Union County2
- Warren County2
- Audubon County1
- Calhoun County1
- Carroll County1
- Crawford County1
- Fremont County1
- Harrison County1
- Humboldt County1
- Mills County1
- Montgomery County1
- Page County1
- Pocahontas County1
- Pottawattamie County1
- Sac County1
- Shelby County1
- Webster County1
- Wright County1
- Allamakee County1
23 more counties
- Appanoose County1
- Benton County1
- Black Hawk County1
- Bremer County1
- Buchanan County1
- Clayton County1
- Davis County1
- Delaware County1
- Dubuque County1
- Fayette County1
- Iowa County1
- Jackson County1
- Jones County1
- Keokuk County1
- Linn County1
- Lucas County1
- Mahaska County1
- Marion County1
- Monroe County1
- Poweshiek County1
- Tama County1
- Wapello County1
- Wayne County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20082010
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.