Alert archive / Iowa / Severe Thunderstorm Watches
Severe Thunderstorm Watches in Iowa, 2012
44 severe thunderstorm watches in 2012. 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 severe thunderstorm watches reaches back to 1997.
Severe Thunderstorm Watches by county
Each county as a circle sized by its count in 2012. Tap one for its archive.
- Severe Thunderstorm Watches
- 44
- Busiest month
- May20 severe thunderstorm watches
- Busiest day
- May 4, 20124 severe thunderstorm 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 |
|---|---|---|---|---|
| Mar 29, 8:30 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Appanoose, Cass, Clarke, Decatur and 9 more | 6 hr |
| Mar 31, 9:24 PM CDT | Severe Thunderstorm Watch | SPC | Cedar, Clinton, Delaware, Dubuque, Jackson, Johnson and 6 more | 9 hr |
| Apr 14, 8:41 PM CDT | Severe Thunderstorm Watch | SPC | Cedar, Clinton, Des Moines, Henry, Iowa, Jackson and 9 more | 4 hr |
| Apr 14, 10:09 PM CDT | Severe Thunderstorm Watch | SPC | Fremont, Harrison, Mills, Monona, Montgomery, Page and 3 more | 6 hr |
| Apr 25, 7:47 PM CDT | Severe Thunderstorm Watch | SPC | Lee, Van Buren | 6 hr |
| May 1, 4:58 PM CDT | Severe Thunderstorm Watch | SPC | Buena Vista, Cherokee, Ida, Monona, Plymouth, Woodbury | 4 hr |
| May 1, 9:18 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Audubon, Black Hawk, Boone, Buena Vista and 54 more | 7 hr |
| May 3, 12:50 AM CDT | Severe Thunderstorm Watch | SPC | Adams, Cass, Fremont, Mills, Montgomery, Page and 2 more | 4 hr |
| May 4, 12:53 AM CDT | Severe Thunderstorm Watch | SPC | Des Moines, Henry, Jefferson, Lee, Van Buren | 4 hr |
| May 4, 2:00 PM CDT | Severe Thunderstorm Watch | SPC | Buena Vista, Calhoun, Carroll, Cerro Gordo, Cherokee, Clay and 23 more | 9 hr |
| May 4, 5:52 PM CDT | Severe Thunderstorm Watch | SPC | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 5 hr |
| May 4, 6:01 PM CDT | Severe Thunderstorm Watch | SPC | Benton, Black Hawk, Boone, Bremer, Buchanan, Butler and 22 more | 3 hr |
| May 5, 6:49 AM CDT | Severe Thunderstorm Watch | SPC | Cherokee, Lyon, O'Brien, Osceola, Plymouth, Sioux | 7 hr |
| May 5, 11:38 AM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Cerro Gordo, Chickasaw, Clayton, Emmet, Fayette and 8 more | 6 hr |
| May 5, 6:46 PM CDT | Severe Thunderstorm Watch | SPC | Lyon | 6 hr |
| May 5, 10:03 PM CDT | Severe Thunderstorm Watch | SPC | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 6 more | 7 hr |
| May 6, 7:17 AM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Appanoose, Clarke, Dallas, Davis and 16 more | 6 hr |
| May 6, 9:29 AM CDT | Severe Thunderstorm Watch | SPC | Benton, Cedar, Clinton, Des Moines, Henry, Iowa and 12 more | 4 hr |
| May 6, 1:42 PM CDT | Severe Thunderstorm Watch | SPC | Des Moines, Henry, Lee, Louisa, Van Buren | 7 hr |
| May 19, 3:25 PM CDT | Severe Thunderstorm Watch | SPC | Fremont, Harrison, Mills, Monona, Pottawattamie, Shelby | 7 hr |
| May 19, 6:52 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Audubon, Buena Vista, Calhoun, Carroll, Cass and 17 more | 5 hr |
| May 23, 4:07 PM CDT | Severe Thunderstorm Watch | SPC | Audubon, Buena Vista, Calhoun, Carroll, Cherokee, Clay and 23 more | 7 hr |
| May 24, 3:30 PM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Appanoose, Benton, Black Hawk, Bremer, Buchanan and 39 more | 4 hr |
| May 27, 3:42 PM CDT | Severe Thunderstorm Watch | SPC | Buena Vista, Cherokee, Clay, Crawford, Dickinson, Emmet and 12 more | 8 hr |
| May 28, 12:54 PM CDT | Severe Thunderstorm Watch | SPC | Clayton | 7 hr |
| Jun 10, 3:42 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Audubon, Boone, Buena Vista, Calhoun and 45 more | 7 hr |
| Jun 14, 3:27 PM CDT | Severe Thunderstorm Watch | SPC | Audubon, Buena Vista, Calhoun, Carroll, Cass, Cerro Gordo and 31 more | 8 hr |
| Jun 16, 12:35 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Appanoose, Cass, Clarke, Davis and 12 more | 5 hr |
| Jun 16, 2:45 PM CDT | Severe Thunderstorm Watch | SPC | Cedar, Clinton, Des Moines, Henry, Iowa, Jefferson and 8 more | 6 hr |
| Jun 19, 7:01 PM CDT | Severe Thunderstorm Watch | SPC | Lyon, Osceola, Plymouth, Sioux | 7 hr |
| Jun 29, 3:49 PM CDT | Severe Thunderstorm Watch | SPC | Benton, Cedar, Clinton, Des Moines, Henry, Iowa and 19 more | 5 hr |
| Jul 18, 12:58 PM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 21 more | 7 hr |
| Jul 25, 4:28 PM CDT | Severe Thunderstorm Watch | SPC | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 7 hr |
| Jul 25, 5:16 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Allamakee, Audubon, Black Hawk, Boone and 48 more | 8 hr |
| Jul 25, 8:57 PM CDT | Severe Thunderstorm Watch | SPC | Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 10 more | 6 hr |
| Aug 3, 7:33 PM CDT | Severe Thunderstorm Watch | SPC | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 6 hr |
| Aug 4, 10:50 AM CDT | Severe Thunderstorm Watch | SPC | Appanoose, Benton, Black Hawk, Buchanan, Cedar, Clinton and 27 more | 5 hr |
| Aug 8, 2:21 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Appanoose, Audubon, Boone, Carroll and 24 more | 6 hr |
| Aug 8, 4:53 PM CDT | Severe Thunderstorm Watch | SPC | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 5 hr |
| Sep 4, 3:27 PM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Black Hawk, Bremer, Buchanan, Butler, Chickasaw and 9 more | 8 hr |
| Sep 4, 7:45 PM CDT | Severe Thunderstorm Watch | SPC | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 6 hr |
| Sep 4, 8:51 PM CDT | Severe Thunderstorm Watch | SPC | Buchanan, Clinton, Delaware, Dubuque, Jackson, Jones | 5 hr |
| Sep 4, 10:19 PM CDT | Severe Thunderstorm Watch | SPC | Black Hawk, Bremer, Butler, Calhoun, Cerro Gordo, Emmet and 14 more | 5 hr |
| Sep 4, 11:16 PM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 4 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Monona County13
- Woodbury County13
- Cherokee County13
- Buena Vista County12
- Ida County12
- Plymouth County12
- O'Brien County12
- Clay County11
- Dickinson County11
- Osceola County11
- Cedar County10
- Clinton County10
- Johnson County10
- Harrison County10
- Mills County10
- Pottawattamie County10
- Shelby County10
- Emmet County10
- Sioux County10
- Cass County9
- Jones County9
- Louisa County9
- Muscatine County9
- Scott County9
- Van Buren County9
- Fremont County9
- Kossuth County9
- Palo Alto County9
- Sac County9
- Lyon County9
- Adair County8
- Adams County8
- Marion County8
- Monroe County8
- Delaware County8
- Dubuque County8
- Jackson County8
- Linn County8
- Washington County8
- Des Moines County8
59 more counties
- Henry County8
- Iowa County8
- Lee County8
- Montgomery County8
- Black Hawk County8
- Calhoun County8
- Carroll County8
- Cerro Gordo County8
- Crawford County8
- Greene County8
- Grundy County8
- Guthrie County8
- Humboldt County8
- Jasper County8
- Pocahontas County8
- Poweshiek County8
- Webster County8
- Worth County8
- Clayton County8
- Clarke County7
- Madison County7
- Taylor County7
- Union County7
- Warren County7
- Jefferson County7
- Keokuk County7
- Page County7
- Audubon County7
- Hancock County7
- Mahaska County7
- Marshall County7
- Tama County7
- Wapello County7
- Winnebago County7
- Benton County7
- Buchanan County7
- Chickasaw County7
- Fayette County7
- Howard County7
- Winneshiek County7
- Appanoose County6
- Decatur County6
- Lucas County6
- Franklin County6
- Wright County6
- Bremer County6
- Butler County6
- Floyd County6
- Mitchell County6
- Allamakee County6
- Ringgold County5
- Wayne County5
- Boone County5
- Dallas County5
- Hamilton County5
- Hardin County5
- Polk County5
- Story County5
- Davis County5
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20112013
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.