Alert archive / Iowa / Tornado Watches

Tornado Watches in Iowa, 1999

19 tornado watches in 1999. 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 1999. Tap one for its archive.

Tornado Watches
19
Busiest month
June7 tornado watches
Busiest day
June 6, 19994 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
Apr 5, 5:00 PM CDTTornado WatchSPCAppanoose, Clarke, Davis, Decatur, Henry, Jefferson and 11 more5 hr
Apr 5, 7:00 PM CDTTornado WatchSPCDes Moines, Louisa, Muscatine4 hr
Apr 8, 11:45 AM CDTTornado WatchSPCFremont, Mills, Page5 hr
Apr 8, 1:00 PM CDTTornado WatchSPCAdair, Adams, Appanoose, Audubon, Boone, Calhoun and 33 more6 hr
Apr 8, 5:15 PM CDTTornado WatchSPCAppanoose, Benton, Cedar, Clinton, Davis, Des Moines and 26 more4 hr
May 16, 3:00 PM CDTTornado WatchSPCAdair, Adams, Audubon, Boone, Buena Vista, Butler and 37 more6 hr
May 16, 9:00 PM CDTTornado WatchSPCAdair, Adams, Appanoose, Benton, Black Hawk, Boone and 38 more6 hr
Jun 1, 1:30 PM CDTTornado WatchSPCAppanoose, Cedar, Clarke, Clinton, Davis, Decatur and 22 more6 hr
Jun 5, 4:15 PM CDTTornado WatchSPCClay, Dickinson, Emmet, Kossuth, Lyon, O'Brien and 4 more7 hr
Jun 5, 5:15 PM CDTTornado WatchSPCBoone, Buena Vista, Calhoun, Carroll, Cerro Gordo, Cherokee and 21 more6 hr
Jun 5, 9:00 PM CDTTornado WatchSPCClay, Dickinson, Emmet, Lyon, O'Brien, Osceola and 3 more5 hr
Jun 5, 9:45 PM CDTTornado WatchSPCAllamakee, Bremer, Butler, Cerro Gordo, Chickasaw, Clayton and 11 more4 hr
Jun 6, 2:00 PM CDTTornado WatchSPCAdair, Adams, Audubon, Boone, Buena Vista, Calhoun and 38 more6 hr
Jun 6, 6:00 PM CDTTornado WatchSPCAdair, Adams, Allamakee, Appanoose, Audubon, Benton and 55 more6 hr
Jul 2, 12:15 PM CDTTornado WatchSPCAdair, Adams, Appanoose, Audubon, Cass, Clarke and 28 more5 hr
Jul 27, 6:30 PM CDTTornado WatchSPCDickinson, Lyon, O'Brien, Osceola, Plymouth, Sioux6 hr
Aug 9, 6:30 PM CDTTornado WatchSPCAllamakee, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 14 more6 hr
Sep 7, 5:15 PM CDTTornado WatchSPCAudubon, Buena Vista, Calhoun, Carroll, Cherokee, Clay and 21 more6 hr
Sep 7, 6:15 PM CDTTornado WatchSPCAdair, Adams, Boone, Bremer, Butler, Cass and 27 more6 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. June 6, 19994tornado watches
  2. April 8, 19993tornado watches
  3. June 5, 19992tornado watches
  4. September 7, 19992tornado watches
  5. April 5, 19991tornado watches
  6. April 6, 19991tornado watches
  7. May 16, 19991tornado watches
  8. May 17, 19991tornado watches
  9. June 1, 19991tornado watches
  10. July 2, 19991tornado watches
  11. July 27, 19991tornado watches
  12. August 9, 19991tornado watches

Nearby

Alerts in force nowTornadoes on recordThe radar archive19982000

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.