Alert archive / Iowa / 2004
Weather alerts in Iowa, April 2004
115 weather alerts in April 2004, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in April 2004. Tap one for its archive.
- Alerts
- 115
- Warnings
- 92
- Watches
- 10
- Advisories
- 0
- Busiest day
- April 18, 200443 alerts
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 16, 2:51 PM CDT | Mesoscale Discussion | SPC | Allamakee, Bremer, Buena Vista, Butler, Calhoun, Carroll and 33 more | 114 min |
| Apr 16, 3:45 PM CDT | Severe Thunderstorm Watch | SPC | Audubon, Black Hawk, Boone, Bremer, Buena Vista, Butler and 35 more | 6 hr |
| Apr 16, 6:12 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 48 min |
| Apr 16, 6:58 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 47 min |
| Apr 16, 7:06 PM CDT | Severe Thunderstorm Warning | DMX | Carroll | 39 min |
| Apr 16, 7:17 PM CDT | Mesoscale Discussion | SPC | Audubon, Black Hawk, Boone, Bremer, Buena Vista, Butler and 29 more | 88 min |
| Apr 16, 7:31 PM CDT | Severe Thunderstorm Warning | ARX | Floyd | 29 min |
| Apr 16, 7:40 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Greene | 50 min |
| Apr 16, 7:46 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw | 59 min |
| Apr 16, 7:46 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 44 min |
| Apr 16, 7:50 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 40 min |
| Apr 16, 8:33 PM CDT | Severe Thunderstorm Warning | ARX | Winneshiek | 57 min |
| Apr 16, 8:38 PM CDT | Severe Thunderstorm Warning | ARX | Fayette | 52 min |
| Apr 16, 8:46 PM CDT | Severe Thunderstorm Warning | DMX | Boone | 44 min |
| Apr 16, 8:54 PM CDT | Severe Thunderstorm Warning | DMX | Wright | 36 min |
| Apr 16, 9:04 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Guthrie | 41 min |
| Apr 16, 9:24 PM CDT | Severe Thunderstorm Warning | DMX | Story | 51 min |
| Apr 16, 9:45 PM CDT | Severe Thunderstorm Warning | DMX | Guthrie | 45 min |
| Apr 16, 9:45 PM CDT | Severe Thunderstorm Watch | SPC | Benton, Black Hawk, Buchanan, Cedar, Delaware, Grundy and 11 more | 4 hr |
| Apr 16, 9:49 PM CDT | Severe Thunderstorm Warning | ARX | Floyd | 41 min |
| Apr 16, 10:09 PM CDT | Severe Thunderstorm Warning | DMX | Dallas | 51 min |
| Apr 16, 10:18 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Polk | 27 min |
| Apr 16, 10:28 PM CDT | Severe Thunderstorm Warning | DMX | Grundy | 32 min |
| Apr 16, 10:31 PM CDT | Severe Thunderstorm Warning | DMX | Guthrie | 14 min |
| Apr 16, 10:32 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw | 43 min |
| Apr 16, 10:45 PM CDT | Severe Thunderstorm Warning | DMX | Poweshiek | 45 min |
| Apr 16, 10:58 PM CDT | Severe Thunderstorm Warning | DMX | Dallas | 47 min |
| Apr 16, 11:04 PM CDT | Severe Thunderstorm Warning | DMX | Polk | 56 min |
| Apr 16, 11:18 PM CDT | Severe Thunderstorm Warning | DVN | Iowa, Keokuk | 42 min |
| Apr 16, 11:59 PM CDT | Severe Thunderstorm Warning | DMX | Polk | 46 min |
| Apr 17, 12:09 AM CDT | Severe Thunderstorm Warning | DMX | Jasper | 51 min |
| Apr 17, 12:39 AM CDT | Severe Thunderstorm Warning | DVN | Dubuque | 36 min |
| Apr 17, 12:40 AM CDT | Severe Thunderstorm Warning | DMX | Poweshiek | 50 min |
| Apr 17, 5:03 PM CDT | Mesoscale Discussion | SPC | Boone, Buena Vista, Butler, Calhoun, Carroll, Cerro Gordo and 30 more | 2 hr |
| Apr 17, 7:45 PM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Cerro Gordo, Chickasaw, Emmet, Floyd, Hancock and 7 more | 5 hr |
| Apr 17, 7:46 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth, Winnebago | 44 min |
| Apr 17, 8:32 PM CDT | Severe Thunderstorm Warning | DMX | Winnebago | 28 min |
| Apr 17, 8:52 PM CDT | Severe Thunderstorm Warning | DMX | Worth | 38 min |
| Apr 17, 9:11 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo | 34 min |
| Apr 17, 9:29 PM CDT | Severe Thunderstorm Warning | DMX | Worth | 31 min |
| Apr 17, 9:31 PM CDT | Severe Thunderstorm Warning | DMX | Pocahontas | 14 min |
| Apr 17, 9:31 PM CDT | Mesoscale Discussion | SPC | Allamakee, Cerro Gordo, Chickasaw, Emmet, Fayette, Floyd and 8 more | 119 min |
| Apr 17, 9:37 PM CDT | Tornado Warning | DMX | Cerro Gordo, Worth | 38 min |
| Apr 17, 9:41 PM CDT | Tornado Warning | ARX | Floyd | 64 min |
| Apr 17, 9:43 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth, Palo Alto | 32 min |
| Apr 17, 9:44 PM CDT | Severe Thunderstorm Warning | ARX | Mitchell | 61 min |
| Apr 17, 9:46 PM CDT | Severe Thunderstorm Warning | DMX | Pocahontas | 29 min |
| Apr 17, 9:58 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee | 47 min |
| Apr 17, 10:05 PM CDT | Tornado Watch | SPC | Allamakee, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 19 more | 5 hr |
| Apr 17, 10:13 PM CDT | Severe Thunderstorm Warning | DMX | Worth | 47 min |
| Apr 17, 10:25 PM CDT | Severe Thunderstorm Warning | DMX | Winnebago | 65 min |
| Apr 17, 10:31 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth | 44 min |
| Apr 17, 10:33 PM CDT | Tornado Warning | DMX | Worth | 27 min |
| Apr 17, 10:36 PM CDT | Tornado Warning | ARX | Chickasaw | 69 min |
| Apr 17, 10:47 PM CDT | Tornado Warning | ARX | Floyd | 73 min |
| Apr 17, 10:49 PM CDT | Tornado Warning | ARX | Mitchell | 56 min |
| Apr 17, 10:52 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee | 23 min |
| Apr 17, 11:01 PM CDT | Tornado Warning | DMX | Worth | 29 min |
| Apr 17, 11:10 PM CDT | Mesoscale Discussion | SPC | Buena Vista, Cherokee, Clay, Dickinson, Lyon, O'Brien and 3 more | 95 min |
| Apr 17, 11:24 PM CDT | Severe Thunderstorm Warning | ARX | Howard | 96 min |
| Apr 17, 11:35 PM CDT | Severe Thunderstorm Watch | SPC | Clay, Dickinson, Lyon, O'Brien, Osceola, Sioux | 5 hr |
| Apr 17, 11:37 PM CDT | Severe Thunderstorm Warning | ARX | Winneshiek | 83 min |
| Apr 17, 11:50 PM CDT | Mesoscale Discussion | SPC | Cerro Gordo, Emmet, Hancock, Howard, Humboldt, Kossuth and 5 more | 85 min |
| Apr 18, 4:04 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 26 min |
| Apr 18, 4:15 PM CDT | Mesoscale Discussion | SPC | Buena Vista, Calhoun, Cerro Gordo, Cherokee, Clay, Dickinson and 20 more | 60 min |
| Apr 18, 4:20 PM CDT | Severe Thunderstorm Warning | FSD | Sioux | 25 min |
| Apr 18, 4:40 PM CDT | Tornado Watch | SPC | Audubon, Buena Vista, Calhoun, Carroll, Cass, Cherokee and 29 more | 5 hr |
| Apr 18, 4:45 PM CDT | Severe Thunderstorm Warning | FSD | Sioux | 30 min |
| Apr 18, 4:56 PM CDT | Severe Thunderstorm Warning | FSD | Lyon | 49 min |
| Apr 18, 5:18 PM CDT | Severe Thunderstorm Warning | FSD | Sioux | 42 min |
| Apr 18, 5:51 PM CDT | Severe Thunderstorm Warning | FSD | Lyon | 24 min |
| Apr 18, 5:59 PM CDT | Severe Thunderstorm Warning | FSD | Sioux | 61 min |
| Apr 18, 6:19 PM CDT | Severe Thunderstorm Warning | FSD | Osceola | 56 min |
| Apr 18, 6:26 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 64 min |
| Apr 18, 6:38 PM CDT | Severe Thunderstorm Warning | FSD | O'Brien | 67 min |
| Apr 18, 6:55 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 50 min |
| Apr 18, 6:59 PM CDT | Severe Thunderstorm Warning | FSD | Dickinson | 46 min |
| Apr 18, 7:05 PM CDT | Mesoscale Discussion | SPC | Audubon, Buena Vista, Calhoun, Carroll, Cass, Cherokee and 29 more | 115 min |
| Apr 18, 7:12 PM CDT | Severe Thunderstorm Warning | FSD | Clay | 63 min |
| Apr 18, 7:54 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista | 36 min |
| Apr 18, 7:56 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 34 min |
| Apr 18, 7:57 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 33 min |
| Apr 18, 8:01 PM CDT | Tornado Warning | FSD | Woodbury | 29 min |
| Apr 18, 8:19 PM CDT | Severe Thunderstorm Warning | FSD | Ida | 26 min |
| Apr 18, 8:25 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee | 50 min |
| Apr 18, 8:30 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 45 min |
| Apr 18, 8:36 PM CDT | Severe Thunderstorm Warning | DMX | Emmet, Kossuth | 24 min |
| Apr 18, 9:00 PM CDT | Severe Thunderstorm Warning | DMX | Palo Alto, Pocahontas | 15 min |
| Apr 18, 9:20 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Pocahontas | 25 min |
| Apr 18, 9:34 PM CDT | Severe Thunderstorm Warning | DMX | Hancock, Wright | 26 min |
| Apr 18, 9:43 PM CDT | Severe Thunderstorm Warning | DMX | Union | 47 min |
| Apr 18, 9:45 PM CDT | Tornado Watch | SPC | Adair, Adams, Allamakee, Audubon, Benton, Black Hawk and 49 more | 4 hr |
| Apr 18, 10:19 PM CDT | Severe Thunderstorm Warning | ARX | Floyd, Mitchell | 26 min |
| Apr 18, 11:12 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Allamakee, Audubon, Benton, Black Hawk and 48 more | 93 min |
| Apr 18, 11:55 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Guthrie | 35 min |
| Apr 20, 3:57 PM CDT | Severe Thunderstorm Warning | DMX | Adair | 33 min |
| Apr 20, 4:15 PM CDT | Severe Thunderstorm Warning | DMX | Madison | 45 min |
| Apr 20, 4:30 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Cass, Guthrie | 45 min |
| Apr 20, 4:40 PM CDT | Severe Thunderstorm Watch | SPC | Appanoose, Clarke, Davis, Decatur, Henry, Jefferson and 13 more | 5 hr |
| Apr 20, 5:18 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Dallas, Madison | 42 min |
| Apr 20, 5:40 PM CDT | Tornado Watch | SPC | Scott | 5 hr |
| Apr 20, 5:56 PM CDT | Tornado Warning | DMX | Polk | 34 min |
| Apr 20, 6:00 PM CDT | Mesoscale Discussion | SPC | Scott | 2 hr |
| Apr 20, 6:13 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Johnson | 62 min |
| Apr 20, 6:25 PM CDT | Severe Thunderstorm Watch | SPC | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 5 hr |
| Apr 20, 7:05 PM CDT | Tornado Warning | DVN | Clinton, Jackson | 55 min |
| Apr 20, 7:20 PM CDT | Mesoscale Discussion | SPC | Appanoose, Clarke, Dallas, Davis, Decatur, Henry and 19 more | 115 min |
| Apr 20, 8:06 PM CDT | Mesoscale Discussion | SPC | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 84 min |
| Apr 20, 8:52 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 38 min |
| Apr 20, 9:26 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 49 min |
| Apr 20, 9:33 PM CDT | Severe Thunderstorm Warning | OAX | Shelby | 27 min |
| Apr 21, 3:04 PM CDT | Mesoscale Discussion | SPC | Harrison, Lyon, Monona, Plymouth, Sioux, Woodbury | 2 hr |
| Apr 21, 5:59 PM CDT | Severe Thunderstorm Warning | DMX | Carroll | 31 min |
| Apr 21, 6:26 PM CDT | Severe Thunderstorm Warning | DMX | Audubon | 49 min |
| Apr 28, 11:26 PM CDT | Severe Thunderstorm Warning | FSD | Dickinson | 34 min |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 82 |
| Tornado Warning | 10 |
| Severe Thunderstorm Watch | 6 |
| Tornado Watch | 4 |
| Mesoscale Discussion | 13 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Worth County19
- Floyd County15
- Kossuth County15
- Hancock County14
- Winnebago County14
- Cerro Gordo County13
- Mitchell County13
- Palo Alto County13
- Pocahontas County13
- Harrison County12
- Wright County12
- Calhoun County11
- Chickasaw County11
- Emmet County11
- Humboldt County11
- Sioux County11
- Buena Vista County10
- Carroll County10
- Howard County10
- Monona County10
- Shelby County10
- Dickinson County9
- Greene County9
- Plymouth County9
- Webster County9
- Winneshiek County9
- Dallas County9
- Guthrie County9
- Polk County9
- Allamakee County8
- Clay County8
- Crawford County8
- Franklin County8
- O'Brien County8
- Woodbury County8
- Audubon County8
- Lyon County8
- Butler County7
- Cherokee County7
- Ida County7
56 more counties
- Sac County7
- Jasper County7
- Osceola County7
- Pottawattamie County7
- Bremer County6
- Fayette County6
- Hamilton County6
- Hardin County6
- Black Hawk County6
- Boone County6
- Grundy County6
- Story County6
- Poweshiek County6
- Fremont County6
- Mills County6
- Montgomery County6
- Madison County6
- Marshall County5
- Tama County5
- Cass County5
- Union County5
- Adair County5
- Buchanan County4
- Delaware County4
- Keokuk County4
- Clarke County4
- Marion County4
- Page County4
- Ringgold County4
- Warren County4
- Benton County3
- Iowa County3
- Johnson County3
- Mahaska County3
- Washington County3
- Clayton County3
- Cedar County2
- Dubuque County2
- Adams County2
- Taylor County2
- Appanoose County2
- Davis County2
- Decatur County2
- Henry County2
- Jefferson County2
- Lucas County2
- Monroe County2
- Van Buren County2
- Wapello County2
- Wayne County2
- Scott County2
- Jones County1
- Linn County1
- Louisa County1
- Clinton County1
- Jackson County1
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.