Alert archive / Iowa / Severe Thunderstorm Warnings / 2018
Severe Thunderstorm Warnings in Iowa, April 2018
32 severe thunderstorm warnings in April 2018. 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 2018. Tap one for its archive.
- Severe Thunderstorm Warnings
- 32
- Busiest day
- April 13, 201819 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 13, 7:08 AM CDT | Severe Thunderstorm Warning | ARX | Allamakee, Winneshiek | 37 min |
| Apr 13, 3:01 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie, Shelby | 29 min |
| Apr 13, 3:22 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Montgomery, Pottawattamie | 23 min |
| Apr 13, 3:27 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie, Shelby | 33 min |
| Apr 13, 3:52 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie, Shelby | 38 min |
| Apr 13, 4:06 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Montgomery, Pottawattamie | 24 min |
| Apr 13, 4:18 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Cass | 57 min |
| Apr 13, 4:24 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie, Shelby | 36 min |
| Apr 13, 4:29 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills | 31 min |
| Apr 13, 4:34 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 26 min |
| Apr 13, 4:47 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Montgomery, Pottawattamie | 43 min |
| Apr 13, 4:57 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills | 33 min |
| Apr 13, 5:36 PM CDT | Severe Thunderstorm Warning | DMX | Carroll, Greene | 39 min |
| Apr 13, 6:02 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Greene, Webster | 43 min |
| Apr 13, 6:19 PM CDT | Severe Thunderstorm Warning | FSD | Osceola | 26 min |
| Apr 13, 6:36 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery, Page | 24 min |
| Apr 13, 6:39 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Webster, Wright | 51 min |
| Apr 13, 6:52 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Dallas, Greene | 38 min |
| Apr 13, 6:57 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Webster, Wright | 63 min |
| Apr 13, 7:05 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Cass | 40 min |
| Apr 13, 7:18 PM CDT | Severe Thunderstorm Warning | DMX | Adams, Taylor | 42 min |
| Apr 13, 7:23 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Hamilton, Hardin, Marshall, Story | 52 min |
| Apr 13, 7:49 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Madison, Union | 41 min |
| Apr 13, 7:52 PM CDT | Severe Thunderstorm Warning | DMX | Franklin, Hamilton, Hardin, Marshall, Story, Wright | 39 min |
| Apr 13, 7:59 PM CDT | Severe Thunderstorm Warning | DMX | Adams, Ringgold, Taylor, Union | 36 min |
| Apr 13, 8:00 PM CDT | Severe Thunderstorm Warning | ARX | Floyd, Mitchell | 18 min |
| Apr 13, 8:19 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Cerro Gordo, Franklin, Grundy | 41 min |
| Apr 13, 8:25 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw | 35 min |
| Apr 13, 8:32 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Madison, Union | 37 min |
| Apr 13, 8:43 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Polk | 36 min |
| Apr 13, 8:46 PM CDT | Severe Thunderstorm Warning | ARX | Howard | 29 min |
| Apr 18, 5:43 AM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin | 47 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Pottawattamie County7
- Mills County5
- Shelby County4
- Montgomery County4
- Hamilton County4
- Adams County4
- Fremont County3
- Greene County3
- Webster County3
- Wright County3
- Adair County3
- Union County3
- Franklin County3
- Cass County2
- Boone County2
- Dallas County2
- Taylor County2
- Hardin County2
- Marshall County2
- Story County2
- Madison County2
- Butler County2
- Allamakee County1
- Winneshiek County1
- Audubon County1
- Carroll County1
- Calhoun County1
- Osceola County1
- Page County1
- Ringgold County1
- Floyd County1
- Mitchell County1
- Cerro Gordo County1
- Grundy County1
- Chickasaw County1
- Polk County1
- Howard County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20172019
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.