Alert archive / Iowa / Severe Thunderstorm Warnings / 2004
Severe Thunderstorm Warnings in Iowa, April 2004
82 severe thunderstorm warnings in April 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 severe thunderstorm warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count in April 2004. Tap one for its archive.
- Severe Thunderstorm Warnings
- 82
- Busiest day
- April 18, 200428 severe thunderstorm warnings
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, 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, 7:31 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, 9:49 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, 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, 9:43 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, 10:13 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, 10:52 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee | 23 min |
| Apr 17, 11:24 PM CDT | Severe Thunderstorm Warning | ARX | Howard | 96 min |
| Apr 17, 11:37 PM CDT | Severe Thunderstorm Warning | ARX | Winneshiek | 83 min |
| Apr 18, 4:04 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 26 min |
| Apr 18, 4:20 PM CDT | Severe Thunderstorm Warning | FSD | Sioux | 25 min |
| 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, 7:12 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, 8:19 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, 10:19 PM CDT | Severe Thunderstorm Warning | ARX | Floyd, Mitchell | 26 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, 5:18 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Dallas, Madison | 42 min |
| Apr 20, 6:13 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Johnson | 62 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, 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 county
Every county with at least one alert. A county page lists each alert that covered it.
- Guthrie County5
- Dallas County4
- Kossuth County4
- Pocahontas County4
- Sioux County4
- Monona County3
- Floyd County3
- Harrison County3
- Polk County3
- Winnebago County3
- Worth County3
- Adair County3
- Carroll County2
- Calhoun County2
- Chickasaw County2
- Winneshiek County2
- Wright County2
- Audubon County2
- Jasper County2
- Poweshiek County2
- Palo Alto County2
- Mitchell County2
- Allamakee County2
- Plymouth County2
- Lyon County2
- Woodbury County2
- Dickinson County2
- Buena Vista County2
- Madison County2
- Greene County1
- Crawford County1
- Fayette County1
- Boone County1
- Story County1
- Grundy County1
- Iowa County1
- Keokuk County1
- Dubuque County1
- Cerro Gordo County1
- Howard 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. Warning verification from the Mesonet's Cow. Rebuilt daily.