Alert archive / Iowa / Tornado Watches
Tornado Watches in Iowa, 2004
39 tornado watches in 2004. 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 2004. Tap one for its archive.
- Tornado Watches
- 39
- Busiest month
- May16 tornado watches
- Busiest day
- May 22, 20043 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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 17, 10:05 PM CDT | Tornado Watch | SPC | Allamakee, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 19 more | 5 hr |
| Apr 18, 4:40 PM CDT | Tornado Watch | SPC | Audubon, Buena Vista, Calhoun, Carroll, Cass, Cherokee and 29 more | 5 hr |
| Apr 18, 9:45 PM CDT | Tornado Watch | SPC | Adair, Adams, Allamakee, Audubon, Benton, Black Hawk and 49 more | 4 hr |
| Apr 20, 5:40 PM CDT | Tornado Watch | SPC | Scott | 5 hr |
| May 20, 5:00 PM CDT | Tornado Watch | SPC | Adair, Adams, Appanoose, Audubon, Cass, Clarke and 23 more | 5 hr |
| May 21, 2:45 PM CDT | Tornado Watch | SPC | Allamakee, Audubon, Benton, Black Hawk, Boone, Bremer and 59 more | 7 hr |
| May 21, 9:55 PM CDT | Tornado Watch | SPC | Audubon, Boone, Buena Vista, Calhoun, Carroll, Cherokee and 14 more | 4 hr |
| May 22, 3:45 PM CDT | Tornado Watch | SPC | Fremont, Harrison, Mills, Pottawattamie, Shelby | 7 hr |
| May 22, 6:15 PM CDT | Tornado Watch | SPC | Adair, Adams, Appanoose, Audubon, Benton, Boone and 47 more | 6 hr |
| May 22, 10:40 PM CDT | Tornado Watch | SPC | Adair, Adams, Appanoose, Benton, Cedar, Clarke and 33 more | 5 hr |
| May 23, 1:15 PM CDT | Tornado Watch | SPC | Des Moines, Lee | 6 hr |
| May 23, 2:05 PM CDT | Tornado Watch | SPC | Allamakee, Benton, Buchanan, Cedar, Clayton, Clinton and 14 more | 8 hr |
| May 24, 11:30 AM CDT | Tornado Watch | SPC | Adair, Adams, Audubon, Boone, Carroll, Cass and 19 more | 11 hr |
| May 24, 2:35 PM CDT | Tornado Watch | SPC | Appanoose, Boone, Butler, Cerro Gordo, Clarke, Dallas and 26 more | 7 hr |
| May 24, 5:45 PM CDT | Tornado Watch | SPC | Appanoose, Davis, Des Moines, Lee, Van Buren, Wayne | 5 hr |
| May 29, 2:05 PM CDT | Tornado Watch | SPC | Buena Vista, Calhoun, Cherokee, Clay, Dickinson, Emmet and 13 more | 8 hr |
| May 29, 3:05 PM CDT | Tornado Watch | SPC | Carroll, Crawford, Fremont, Harrison, Mills, Monona and 4 more | 7 hr |
| May 29, 4:35 PM CDT | Tornado Watch | SPC | Adair, Adams, Boone, Cass, Clarke, Dallas and 15 more | 5 hr |
| May 29, 9:35 PM CDT | Tornado Watch | SPC | Adair, Adams, Audubon, Boone, Carroll, Cass and 26 more | 6 hr |
| May 30, 12:25 PM CDT | Tornado Watch | SPC | Allamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 37 more | 7 hr |
| Jun 10, 5:55 PM CDT | Tornado Watch | SPC | Clinton, Dubuque, Jackson, Scott | 4 hr |
| Jun 11, 1:45 PM CDT | Tornado Watch | SPC | Black Hawk, Bremer, Buena Vista, Butler, Calhoun, Cerro Gordo and 20 more | 5 hr |
| Jun 11, 5:00 PM CDT | Tornado Watch | SPC | Allamakee, Black Hawk, Bremer, Buchanan, Butler, Calhoun and 26 more | 6 hr |
| Jun 12, 11:45 AM CDT | Tornado Watch | SPC | Adair, Adams, Audubon, Boone, Buena Vista, Calhoun and 31 more | 7 hr |
| Jun 15, 3:35 PM CDT | Tornado Watch | SPC | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 6 more | 6 hr |
| Jul 5, 4:20 PM CDT | Tornado Watch | SPC | Allamakee, Appanoose, Benton, Black Hawk, Bremer, Buchanan and 51 more | 6 hr |
| Jul 12, 6:20 PM CDT | Tornado Watch | SPC | Cherokee, Clay, Dickinson, Harrison, Ida, Lyon and 6 more | 7 hr |
| Jul 13, 10:55 AM CDT | Tornado Watch | SPC | Cedar, Clinton, Delaware, Dubuque, Jackson, Jones and 3 more | 6 hr |
| Jul 19, 1:40 PM CDT | Tornado Watch | SPC | Allamakee, Benton, Black Hawk, Bremer, Buchanan, Cedar and 23 more | 5 hr |
| Jul 31, 3:00 PM CDT | Tornado Watch | SPC | Dickinson, Emmet, Kossuth, Lyon, Mitchell, Osceola and 2 more | 7 hr |
| Aug 3, 4:25 PM CDT | Tornado Watch | SPC | Appanoose, Benton, Black Hawk, Boone, Buchanan, Cedar and 39 more | 6 hr |
| Aug 3, 5:00 PM CDT | Tornado Watch | SPC | Adair, Adams, Audubon, Cass, Fremont, Guthrie and 9 more | 5 hr |
| Aug 25, 12:35 PM CDT | Tornado Watch | SPC | Appanoose, Davis, Decatur, Des Moines, Henry, Jefferson and 7 more | 6 hr |
| Aug 26, 4:10 PM CDT | Tornado Watch | SPC | Adair, Adams, Allamakee, Audubon, Benton, Black Hawk and 56 more | 6 hr |
| Sep 5, 3:00 PM CDT | Tornado Watch | SPC | Adair, Adams, Appanoose, Audubon, Boone, Buena Vista and 51 more | 6 hr |
| Sep 15, 12:25 PM CDT | Tornado Watch | SPC | Allamakee, Bremer, Butler, Chickasaw, Clayton, Fayette and 4 more | 8 hr |
| Oct 29, 2:50 PM CDT | Tornado Watch | SPC | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 46 more | 6 hr |
| Oct 29, 3:35 PM CDT | Tornado Watch | SPC | Emmet, Winnebago, Worth | 5 hr |
| Oct 29, 6:30 PM CDT | Tornado Watch | SPC | Allamakee, Benton, Buchanan, Cedar, Clayton, Clinton and 19 more | 6 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Worth County14
- Dallas County14
- Polk County14
- Delaware County13
- Audubon County13
- Shelby County13
- Webster County13
- Boone County13
- Guthrie County13
- Hardin County13
- Jasper County13
- Dubuque County12
- Emmet County12
- Franklin County12
- Humboldt County12
- Wright County12
- Calhoun County12
- Carroll County12
- Cass County12
- Fremont County12
- Greene County12
- Harrison County12
- Montgomery County12
- Adair County12
- Adams County12
- Clarke County12
- Hamilton County12
- Madison County12
- Marion County12
- Marshall County12
- Page County12
- Ringgold County12
- Story County12
- Taylor County12
- Union County12
- Warren County12
- Wayne County12
- Allamakee County11
- Black Hawk County11
- Bremer County11
59 more counties
- Buchanan County11
- Butler County11
- Cerro Gordo County11
- Chickasaw County11
- Clayton County11
- Fayette County11
- Hancock County11
- Howard County11
- Kossuth County11
- Mitchell County11
- Winnebago County11
- Winneshiek County11
- Mills County11
- Pottawattamie County11
- Benton County11
- Poweshiek County11
- Scott County11
- Decatur County11
- Lucas County11
- Jones County11
- Linn County11
- Floyd County10
- Pocahontas County10
- Grundy County10
- Tama County10
- Appanoose County10
- Monroe County10
- Cedar County10
- Clinton County10
- Iowa County10
- Jackson County10
- Muscatine County10
- Crawford County9
- Dickinson County9
- Monona County9
- Davis County9
- Mahaska County9
- Johnson County9
- Des Moines County9
- Keokuk County9
- Louisa County9
- Van Buren County9
- Palo Alto County8
- Buena Vista County8
- Cherokee County8
- Clay County8
- Ida County8
- Sac County8
- Wapello County8
- Henry County8
- Jefferson County8
- Washington County8
- Lee County8
- Osceola County7
- Woodbury County7
- O'Brien County6
- Plymouth County6
- Lyon County5
- Sioux County4
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20032005
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. Rebuilt daily.