Alert archive / Iowa / Severe Thunderstorm Warnings / 2023
Severe Thunderstorm Warnings in Iowa, August 2023
37 severe thunderstorm warnings in August 2023. 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 August 2023. Tap one for its archive.
- Severe Thunderstorm Warnings
- 37
- Busiest day
- August 12, 202318 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 |
|---|---|---|---|---|
| Aug 2, 2:12 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie | 48 min |
| Aug 2, 2:26 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie, Shelby | 37 min |
| Aug 2, 6:55 AM CDT | Severe Thunderstorm Warning | OAX | Monona | 39 min |
| Aug 5, 3:55 PM CDT | Severe Thunderstorm Warning | FSD | Ida | 16 min |
| Aug 5, 6:39 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, O'Brien | 51 min |
| Aug 5, 6:41 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Plymouth | 49 min |
| Aug 5, 7:23 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Ida, Plymouth, Woodbury | 52 min |
| Aug 5, 8:31 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 29 min |
| Aug 5, 9:28 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Boone, Calhoun, Carroll, Crawford, Dallas and 3 more | 47 min |
| Aug 5, 9:31 PM CDT | Severe Thunderstorm Warning | OAX | Shelby | 29 min |
| Aug 5, 9:52 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Calhoun, Greene, Webster | 38 min |
| Aug 5, 10:14 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Carroll, Dallas, Greene, Guthrie | 29 min |
| Aug 5, 11:33 PM CDT | Severe Thunderstorm Warning | OAX | Mills | 27 min |
| Aug 5, 11:51 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills | 39 min |
| Aug 6, 12:35 AM CDT | Severe Thunderstorm Warning | OAX | Montgomery, Page | 25 min |
| Aug 6, 3:23 PM CDT | Severe Thunderstorm Warning | DVN | Van Buren | 37 min |
| Aug 10, 11:08 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, O'Brien, Plymouth, Sioux | 52 min |
| Aug 10, 11:49 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee | 26 min |
| Aug 11, 7:28 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth | 47 min |
| Aug 11, 7:40 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Clay, O'Brien, Sioux | 50 min |
| Aug 11, 8:00 PM CDT | Severe Thunderstorm Warning | DMX | Hancock, Kossuth | 31 min |
| Aug 11, 8:03 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth | 27 min |
| Aug 11, 8:15 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee, Clay, O'Brien | 34 min |
| Aug 11, 8:32 PM CDT | Severe Thunderstorm Warning | ARX | Howard, Mitchell | 31 min |
| Aug 11, 8:41 PM CDT | Severe Thunderstorm Warning | DMX | Palo Alto, Pocahontas | 34 min |
| Aug 11, 9:02 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Franklin, Hancock | 43 min |
| Aug 11, 9:05 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt, Kossuth, Palo Alto, Pocahontas | 25 min |
| Aug 11, 9:06 PM CDT | Severe Thunderstorm Warning | DMX | Bremer, Butler | 39 min |
| Aug 11, 9:18 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Franklin | 27 min |
| Aug 11, 9:29 PM CDT | Severe Thunderstorm Warning | DMX | Hancock, Humboldt, Kossuth, Wright | 31 min |
| Aug 11, 9:40 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin | 35 min |
| Aug 11, 9:45 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Cerro Gordo, Franklin | 30 min |
| Aug 11, 9:49 PM CDT | Severe Thunderstorm Warning | DMX | Franklin, Wright | 26 min |
| Aug 11, 9:53 PM CDT | Severe Thunderstorm Warning | FSD | Ida | 22 min |
| Aug 11, 9:57 PM CDT | Severe Thunderstorm Warning | DMX | Sac | 21 min |
| Aug 11, 10:15 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin | 13 min |
| Aug 17, 5:49 AM CDT | Severe Thunderstorm Warning | DVN | Louisa | 41 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Cherokee County7
- Franklin County6
- Kossuth County5
- O'Brien County4
- Butler County4
- Harrison County3
- Ida County3
- Plymouth County3
- Boone County3
- Greene County3
- Hancock County3
- Cerro Gordo County3
- Pottawattamie County2
- Shelby County2
- Calhoun County2
- Carroll County2
- Dallas County2
- Guthrie County2
- Sac County2
- Mills County2
- Sioux County2
- Buena Vista County2
- Clay County2
- Palo Alto County2
- Pocahontas County2
- Humboldt County2
- Wright County2
- Monona County1
- Woodbury County1
- Audubon County1
- Crawford County1
- Webster County1
- Fremont County1
- Montgomery County1
- Page County1
- Van Buren County1
- Howard County1
- Mitchell County1
- Bremer County1
- Louisa County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20222024
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.