Alert archive / Iowa / Mesoscale Discussions / 2018
Mesoscale Discussions in Iowa, August 2018
18 mesoscale discussions in August 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 mesoscale discussions reaches back to 2003.
Mesoscale Discussions by county
Each county as a circle sized by its count in August 2018. Tap one for its archive.
- Mesoscale Discussions
- 18
- Busiest day
- August 28, 20185 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 1, 6:52 PM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Black Hawk, Boone, Bremer, Buchanan and 20 more | 2 hr |
| Aug 5, 3:46 AM CDT | Mesoscale Discussion | SPC | Buena Vista, Calhoun, Cherokee, Clay, Dickinson, Emmet and 11 more | 89 min |
| Aug 5, 5:44 PM CDT | Mesoscale Discussion | SPC | Benton, Cedar, Clinton, Delaware, Dubuque, Iowa and 13 more | 2 hr |
| Aug 5, 9:32 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Butler, Calhoun and 29 more | 2 hr |
| Aug 6, 2:31 PM CDT | Mesoscale Discussion | SPC | Harrison, Mills, Pottawattamie | 89 min |
| Aug 6, 6:38 PM CDT | Mesoscale Discussion | SPC | Adams, Appanoose, Clarke, Davis, Decatur, Fremont and 11 more | 2 hr |
| Aug 20, 4:46 PM CDT | Mesoscale Discussion | SPC | Dubuque, Jackson | 119 min |
| Aug 24, 3:07 PM CDT | Mesoscale Discussion | SPC | Clay, Emmet, Kossuth, Palo Alto, Winnebago, Worth | 113 min |
| Aug 24, 7:02 PM CDT | Mesoscale Discussion | SPC | Bremer, Butler, Cerro Gordo, Chickasaw, Floyd, Franklin and 4 more | 118 min |
| Aug 26, 9:53 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Buena Vista, Calhoun and 40 more | 2 hr |
| Aug 27, 11:49 AM CDT | Mesoscale Discussion | SPC | Buena Vista, Cherokee, Clay, Dickinson, Emmet, Ida and 11 more | 116 min |
| Aug 27, 2:24 PM CDT | Mesoscale Discussion | SPC | Allamakee, Bremer, Buena Vista, Butler, Calhoun, Cerro Gordo and 21 more | 96 min |
| Aug 28, 3:12 AM CDT | Mesoscale Discussion | SPC | Cherokee, Clay, Dickinson, Emmet, Lyon, O'Brien and 3 more | 3 hr |
| Aug 28, 7:50 AM CDT | Mesoscale Discussion | SPC | Allamakee, Black Hawk, Bremer, Butler, Cerro Gordo, Chickasaw and 15 more | 115 min |
| Aug 28, 12:14 PM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Black Hawk, Boone, Bremer, Buchanan and 21 more | 2 hr |
| Aug 28, 4:45 PM CDT | Mesoscale Discussion | SPC | Appanoose, Cedar, Clarke, Davis, Decatur, Des Moines and 21 more | 60 min |
| Aug 28, 6:07 PM CDT | Mesoscale Discussion | SPC | Cedar, Iowa, Johnson, Keokuk, Muscatine, Washington | 53 min |
| Aug 31, 1:10 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Buena Vista, Calhoun and 38 more | 3 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Hardin County7
- Clay County7
- Emmet County7
- Butler County6
- Franklin County6
- Hamilton County6
- Humboldt County6
- Palo Alto County6
- Webster County6
- Boone County5
- Bremer County5
- Chickasaw County5
- Dallas County5
- Guthrie County5
- Jasper County5
- Polk County5
- Story County5
- Buena Vista County5
- Calhoun County5
- Dickinson County5
- Hancock County5
- Ida County5
- Kossuth County5
- Pocahontas County5
- Sac County5
- Warren County5
- Wright County5
- Allamakee County4
- Dubuque County4
- Fayette County4
- Greene County4
- Grundy County4
- Marshall County4
- Tama County4
- Winneshiek County4
- Cherokee County4
- O'Brien County4
- Plymouth County4
- Winnebago County4
- Marion County4
59 more counties
- Adams County4
- Harrison County4
- Mills County4
- Monona County4
- Pottawattamie County4
- Clarke County4
- Lucas County4
- Union County4
- Worth County4
- Benton County3
- Black Hawk County3
- Clayton County3
- Delaware County3
- Linn County3
- Cedar County3
- Iowa County3
- Jackson County3
- Johnson County3
- Keokuk County3
- Muscatine County3
- Poweshiek County3
- Washington County3
- Adair County3
- Audubon County3
- Carroll County3
- Cass County3
- Crawford County3
- Madison County3
- Montgomery County3
- Shelby County3
- Decatur County3
- Ringgold County3
- Taylor County3
- Cerro Gordo County3
- Floyd County3
- Mitchell County3
- Lyon County3
- Osceola County3
- Sioux County3
- Buchanan County2
- Jones County2
- Louisa County2
- Mahaska County2
- Appanoose County2
- Davis County2
- Fremont County2
- Monroe County2
- Page County2
- Van Buren County2
- Wapello County2
- Wayne County2
- Woodbury County2
- Howard County2
- Clinton County1
- Scott County1
- Des Moines County1
- Henry County1
- Jefferson County1
- Lee 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.