Alert archive / Iowa / Severe Thunderstorm Warnings / 2017
Severe Thunderstorm Warnings in Iowa, April 2017
64 severe thunderstorm warnings in April 2017. 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 2017. Tap one for its archive.
- Severe Thunderstorm Warnings
- 64
- Busiest day
- April 16, 201722 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 9, 8:30 PM CDT | Severe Thunderstorm Warning | DMX | Hancock, Humboldt, Wright | 45 min |
| Apr 9, 8:57 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Hancock, Worth | 48 min |
| Apr 9, 9:20 PM CDT | Severe Thunderstorm Warning | ARX | Mitchell | 55 min |
| Apr 9, 9:47 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills | 43 min |
| Apr 9, 9:51 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Worth | 9 min |
| Apr 9, 9:57 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Floyd, Howard, Mitchell | 48 min |
| Apr 9, 10:25 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Worth | 23 min |
| Apr 9, 10:57 PM CDT | Severe Thunderstorm Warning | DMX | Ringgold, Taylor, Union | 48 min |
| Apr 9, 11:34 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Madison, Ringgold, Union, Warren | 29 min |
| Apr 10, 12:00 AM CDT | Severe Thunderstorm Warning | DMX | Clarke, Lucas, Marion, Warren | 30 min |
| Apr 10, 12:22 AM CDT | Severe Thunderstorm Warning | DMX | Jasper, Lucas, Mahaska, Marion, Warren | 23 min |
| Apr 10, 12:43 AM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Marion, Poweshiek | 36 min |
| Apr 10, 1:43 AM CDT | Severe Thunderstorm Warning | DVN | Johnson | 32 min |
| Apr 10, 1:57 AM CDT | Severe Thunderstorm Warning | DVN | Jones, Linn | 33 min |
| Apr 10, 4:17 AM CDT | Severe Thunderstorm Warning | DVN | Des Moines | 43 min |
| Apr 15, 4:15 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Sac | 45 min |
| Apr 15, 4:39 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills | 36 min |
| Apr 15, 4:45 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 30 min |
| Apr 15, 4:54 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Pocahontas, Sac | 51 min |
| Apr 15, 4:58 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Webster | 47 min |
| Apr 15, 5:21 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 24 min |
| Apr 15, 5:26 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Johnson, Muscatine, Washington | 49 min |
| Apr 15, 5:33 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Lucas, Marion, Warren | 57 min |
| Apr 15, 5:43 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 32 min |
| Apr 15, 5:49 PM CDT | Severe Thunderstorm Warning | DMX | Grundy, Hardin, Marshall, Story | 56 min |
| Apr 15, 6:01 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Johnson, Muscatine, Washington | 44 min |
| Apr 15, 6:08 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Scott | 67 min |
| Apr 15, 6:16 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Page | 29 min |
| Apr 15, 6:29 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Grundy, Marshall, Tama | 61 min |
| Apr 15, 6:46 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 29 min |
| Apr 15, 6:58 PM CDT | Severe Thunderstorm Warning | DVN | Iowa, Keokuk, Washington | 24 min |
| Apr 15, 7:00 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 45 min |
| Apr 15, 7:02 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Tama | 58 min |
| Apr 15, 7:03 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Scott | 43 min |
| Apr 15, 7:04 PM CDT | Severe Thunderstorm Warning | DMX | Dallas | 28 min |
| Apr 15, 7:07 PM CDT | Severe Thunderstorm Warning | DMX | Marion, Warren | 53 min |
| Apr 15, 7:14 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan | 61 min |
| Apr 15, 7:26 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Poweshiek, Tama | 64 min |
| Apr 15, 7:36 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 39 min |
| Apr 15, 7:46 PM CDT | Severe Thunderstorm Warning | DMX | Lucas, Marion, Warren | 44 min |
| Apr 15, 7:49 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Dallas, Guthrie | 43 min |
| Apr 15, 8:00 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Linn | 60 min |
| Apr 15, 8:09 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Poweshiek | 22 min |
| Apr 15, 8:09 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Ida, Plymouth, Woodbury | 51 min |
| Apr 15, 8:12 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 33 min |
| Apr 15, 8:45 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 30 min |
| Apr 15, 8:52 PM CDT | Severe Thunderstorm Warning | FSD | Ida, Woodbury | 24 min |
| Apr 15, 8:58 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Jackson, Jones | 43 min |
| Apr 15, 9:14 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Shelby | 46 min |
| Apr 15, 10:23 PM CDT | Severe Thunderstorm Warning | DMX | Marion, Warren | 52 min |
| Apr 15, 10:43 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska | 47 min |
| Apr 15, 11:14 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marion | 20 min |
| Apr 16, 12:00 AM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Marion | 30 min |
| Apr 19, 6:40 AM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 20 min |
| Apr 19, 7:18 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 31 min |
| Apr 19, 7:28 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Shelby | 32 min |
| Apr 19, 7:37 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt, Pocahontas, Webster | 20 min |
| Apr 19, 7:37 PM CDT | Severe Thunderstorm Warning | DMX | Carroll | 53 min |
| Apr 19, 8:14 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Carroll, Greene, Guthrie | 46 min |
| Apr 19, 8:22 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Webster | 38 min |
| Apr 19, 8:29 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Greene, Webster | 46 min |
| Apr 19, 8:45 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Cass | 25 min |
| Apr 19, 9:58 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Madison | 47 min |
| Apr 19, 10:18 PM CDT | Severe Thunderstorm Warning | DMX | Marshall, Story | 42 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Marion County9
- Fremont County7
- Warren County7
- Mahaska County5
- Lucas County4
- Calhoun County4
- Webster County4
- Harrison County4
- Cerro Gordo County3
- Worth County3
- Clarke County3
- Jasper County3
- Poweshiek County3
- Johnson County3
- Cedar County3
- Washington County3
- Marshall County3
- Clinton County3
- Tama County3
- Plymouth County3
- Adair County3
- Hancock County2
- Humboldt County2
- Mitchell County2
- Mills County2
- Ringgold County2
- Union County2
- Madison County2
- Jones County2
- Linn County2
- Sac County2
- Pocahontas County2
- Muscatine County2
- Grundy County2
- Story County2
- Scott County2
- Black Hawk County2
- Dallas County2
- Benton County2
- Guthrie County2
24 more counties
- Ida County2
- Woodbury County2
- Shelby County2
- Carroll County2
- Greene County2
- Wright County1
- Chickasaw County1
- Floyd County1
- Howard County1
- Taylor County1
- Decatur County1
- Des Moines County1
- Hardin County1
- Page County1
- Iowa County1
- Keokuk County1
- Buchanan County1
- Cherokee County1
- Jackson County1
- Pottawattamie County1
- Crawford County1
- Audubon County1
- Boone County1
- Cass County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20162018
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.