Alert archive / Iowa / Mesoscale Discussions / 2026
Mesoscale Discussions in Iowa, August 2026
33 mesoscale discussions in August 2026. 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 mesoscale discussions reaches back to 2003.
Mesoscale Discussions by county
Each county as a circle sized by its count in August 2026. Tap one for its archive.
- Mesoscale Discussions
- 33
- Busiest day
- August 10, 20264 mesoscale discussions
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 5, 12:01 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Cass, Clarke, Fremont, Lucas and 9 more | 119 min |
| Aug 7, 10:52 AM CDT | Mesoscale Discussion | SPC | Buena Vista, Cerro Gordo, Emmet, Hancock, Humboldt, Kossuth and 4 more | 83 min |
| Aug 7, 1:16 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Buena Vista, Butler and 45 more | 119 min |
| Aug 7, 4:57 PM CDT | Mesoscale Discussion | SPC | Benton, Black Hawk, Boone, Buchanan, Cedar, Clinton and 15 more | 2 hr |
| Aug 7, 8:48 PM CDT | Mesoscale Discussion | SPC | Appanoose, Clarke, Davis, Des Moines, Henry, Jasper and 11 more | 87 min |
| Aug 8, 11:18 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Cass, Clarke, Decatur, Fremont and 11 more | 117 min |
| Aug 9, 4:38 AM CDT | Mesoscale Discussion | SPC | Cerro Gordo, Dickinson, Emmet, Floyd, Hancock, Howard and 5 more | 3 hr |
| Aug 9, 8:14 PM CDT | Mesoscale Discussion | SPC | Clinton, Des Moines, Jackson, Lee, Louisa, Muscatine and 1 more | 2 hr |
| Aug 9, 9:07 PM CDT | Mesoscale Discussion | SPC | Fremont, Page, Ringgold, Taylor | 113 min |
| Aug 9, 10:53 PM CDT | Mesoscale Discussion | SPC | Clinton, Scott | 2 hr |
| Aug 10, 12:47 PM CDT | Mesoscale Discussion | SPC | Cedar, Clinton, Jackson, Jones, Muscatine, Scott | 2 hr |
| Aug 10, 9:07 PM CDT | Mesoscale Discussion | SPC | Benton, Black Hawk, Buchanan, Cedar, Clinton, Delaware and 7 more | 113 min |
| Aug 11, 1:15 AM CDT | Mesoscale Discussion | SPC | Cherokee, Clay, Dickinson, Lyon, O'Brien, Osceola and 2 more | 2 hr |
| Aug 11, 4:13 AM CDT | Mesoscale Discussion | SPC | Benton, Black Hawk, Boone, Bremer, Buchanan, Buena Vista and 33 more | 2 hr |
| Aug 11, 9:00 AM CDT | Mesoscale Discussion | SPC | Cedar, Clinton, Dubuque, Jackson, Jones, Muscatine and 1 more | 2 hr |
| Aug 11, 8:04 PM CDT | Mesoscale Discussion | SPC | Cedar, Clinton, Delaware, Dubuque, Jackson, Jones and 2 more | 2 hr |
| Aug 12, 4:37 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Carroll, Cass and 34 more | 53 min |
| Aug 12, 7:30 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Boone, Clarke, Dallas, Guthrie and 11 more | 2 hr |
| Aug 13, 2:42 AM CDT | Mesoscale Discussion | SPC | Harrison, Shelby | 2 hr |
| Aug 13, 4:49 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Carroll, Cass and 13 more | 116 min |
| Aug 13, 7:27 AM CDT | Mesoscale Discussion | SPC | Benton, Cedar, Clarke, Davis, Henry, Iowa and 16 more | 2 hr |
| Aug 13, 10:28 AM CDT | Mesoscale Discussion | SPC | Des Moines, Henry, Lee, Louisa | 3 hr |
| Aug 13, 11:03 PM CDT | Mesoscale Discussion | SPC | Cedar, Des Moines, Henry, Johnson, Lee, Louisa and 3 more | 117 min |
| Aug 14, 2:20 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Buena Vista, Calhoun and 34 more | 2 hr |
| Aug 14, 11:42 PM CDT | Mesoscale Discussion | SPC | Davis, Lee, Van Buren | 2 hr |
| Aug 15, 4:02 PM CDT | Mesoscale Discussion | SPC | Appanoose, Davis, Henry, Jefferson, Lee, Monroe and 2 more | 118 min |
| Aug 18, 1:52 PM CDT | Mesoscale Discussion | SPC | Allamakee, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 10 more | 113 min |
| Aug 18, 2:47 PM CDT | Mesoscale Discussion | SPC | Clay, Dickinson, Emmet, Hancock, Humboldt, Kossuth and 8 more | 118 min |
| Aug 18, 5:29 PM CDT | Mesoscale Discussion | SPC | Allamakee, Clayton, Delaware, Dubuque | 2 hr |
| Aug 19, 12:26 PM CDT | Mesoscale Discussion | SPC | Fremont, Mills, Montgomery, Page | 2 hr |
| Aug 19, 2:30 PM CDT | Mesoscale Discussion | SPC | Page, Ringgold, Taylor | 90 min |
| Aug 20, 7:13 PM CDT | Mesoscale Discussion | SPC | Lyon | 62 min |
| Aug 21, 2:22 PM CDT | Mesoscale Discussion | SPC | Clinton, Jackson, Scott | 113 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Clarke County9
- Warren County8
- Clinton County8
- Scott County8
- Adair County7
- Adams County7
- Madison County7
- Union County7
- Boone County7
- Tama County7
- Cedar County7
- Jackson County7
- Cass County6
- Lucas County6
- Ringgold County6
- Dallas County6
- Grundy County6
- Jasper County6
- Mahaska County6
- Marion County6
- Monroe County6
- Polk County6
- Shelby County6
- Story County6
- Henry County6
- Lee County6
- Muscatine County6
- Mills County5
- Montgomery County5
- Page County5
- Pottawattamie County5
- Cerro Gordo County5
- Emmet County5
- Hancock County5
- Humboldt County5
- Kossuth County5
- Pocahontas County5
- Winnebago County5
- Worth County5
- Guthrie County5
59 more counties
- Marshall County5
- Poweshiek County5
- Wapello County5
- Delaware County5
- Dubuque County5
- Johnson County5
- Jones County5
- Linn County5
- Louisa County5
- Fremont County4
- Taylor County4
- Buena Vista County4
- Palo Alto County4
- Audubon County4
- Carroll County4
- Cherokee County4
- Clay County4
- Crawford County4
- Franklin County4
- Greene County4
- Wright County4
- Benton County4
- Black Hawk County4
- Buchanan County4
- Iowa County4
- Davis County4
- Des Moines County4
- Jefferson County4
- Van Buren County4
- Harrison County4
- Dickinson County4
- Butler County3
- Calhoun County3
- Hamilton County3
- Hardin County3
- Sac County3
- Webster County3
- Keokuk County3
- Monona County3
- Floyd County3
- Mitchell County3
- Osceola County3
- Lyon County3
- O'Brien County3
- Washington County3
- Decatur County2
- Ida County2
- Wayne County2
- Appanoose County2
- Howard County2
- Plymouth County2
- Sioux County2
- Bremer County2
- Chickasaw County2
- Fayette County2
- Allamakee County2
- Clayton County2
- Woodbury County1
- Winneshiek County1
Nearby
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.