Alert archive / Iowa / Tornado Watches

Tornado Watches in Iowa, 2009

19 tornado watches in 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 2009. Tap one for its archive.

Tornado Watches
19
Busiest month
June9 tornado watches
Busiest day
April 26, 20092 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.

IssuedProductOfficeCountiesLasted
Mar 23, 3:50 PM CDTTornado WatchSPCAdams, Audubon, Cass, Crawford, Fremont, Harrison and 11 more6 hr
Apr 26, 12:48 PM CDTTornado WatchSPCAdair, Adams, Audubon, Boone, Butler, Calhoun and 33 more4 hr
Apr 26, 5:02 PM CDTTornado WatchSPCAdair, Adams, Allamakee, Appanoose, Benton, Black Hawk and 41 more6 hr
May 7, 1:44 PM CDTTornado WatchSPCAdams, Appanoose, Clarke, Decatur, Fremont, Mills and 7 more6 hr
May 13, 2:39 PM CDTTornado WatchSPCAppanoose, Clarke, Davis, Decatur, Des Moines, Henry and 15 more7 hr
Jun 7, 3:45 PM CDTTornado WatchSPCAdair, Adams, Audubon, Cass, Clarke, Dallas and 12 more7 hr
Jun 7, 5:44 PM CDTTornado WatchSPCAppanoose, Boone, Davis, Jasper, Lucas, Mahaska and 10 more6 hr
Jun 7, 10:53 PM CDTTornado WatchSPCAdair, Adams, Cass, Clarke, Dallas, Decatur and 15 more5 hr
Jun 16, 4:16 PM CDTTornado WatchSPCPlymouth, Woodbury7 hr
Jun 17, 12:52 PM CDTTornado WatchSPCAdair, Adams, Cass, Fremont, Mills, Montgomery and 5 more8 hr
Jun 17, 7:01 PM CDTTornado WatchSPCAllamakee, Bremer, Butler, Cerro Gordo, Chickasaw, Clayton and 12 more5 hr
Jun 17, 9:04 PM CDTTornado WatchSPCFremont, Mills, Montgomery, Page, Pottawattamie3 hr
Jun 18, 8:58 PM CDTTornado WatchSPCAllamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more7 hr
Jun 21, 3:17 PM CDTTornado WatchSPCBenton, Black Hawk, Boone, Bremer, Buchanan, Buena Vista and 49 more8 hr
Jul 24, 1:12 PM CDTTornado WatchSPCBenton, Buchanan, Cedar, Clayton, Clinton, Delaware and 12 more4 hr
Jul 24, 5:02 PM CDTTornado WatchSPCAllamakee, Benton, Buchanan, Cedar, Chickasaw, Clayton and 15 more6 hr
Aug 8, 12:47 PM CDTTornado WatchSPCLyon, Osceola5 hr
Aug 19, 12:49 PM CDTTornado WatchSPCCedar, Clinton, Des Moines, Henry, Lee, Louisa and 2 more6 hr
Aug 19, 4:49 PM CDTTornado WatchSPCAllamakee, Buchanan, Cedar, Clayton, Clinton, Delaware and 10 more5 hr

By county

Every county with at least one alert. A county page lists each alert that covered it.

59 more counties

The busiest days

Days with the most alerts issued, by UTC date.

  1. April 26, 20092tornado watches
  2. June 7, 20092tornado watches
  3. June 18, 20092tornado watches
  4. July 24, 20092tornado watches
  5. August 19, 20092tornado watches
  6. March 23, 20091tornado watches
  7. May 7, 20091tornado watches
  8. May 13, 20091tornado watches
  9. June 8, 20091tornado watches
  10. June 16, 20091tornado watches
  11. June 17, 20091tornado watches
  12. June 19, 20091tornado watches

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.