Alert archive / Iowa / Mesoscale Discussions / 2011
Mesoscale Discussions in Iowa, August 2011
20 mesoscale discussions in August 2011. 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 2011. Tap one for its archive.
- Mesoscale Discussions
- 20
- Busiest day
- August 18, 20113 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, 1:50 PM CDT | Mesoscale Discussion | SPC | Allamakee, Chickasaw, Clayton, Fayette, Howard, Mitchell and 1 more | 25 min |
| Aug 1, 3:53 PM CDT | Mesoscale Discussion | SPC | Allamakee, Chickasaw, Howard, Mitchell, Winneshiek, Worth | 67 min |
| Aug 2, 12:57 PM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 36 more | 93 min |
| Aug 6, 2:58 PM CDT | Mesoscale Discussion | SPC | Audubon, Cherokee, Crawford, Fremont, Harrison, Ida and 6 more | 3 hr |
| Aug 6, 8:10 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Benton, Black Hawk and 45 more | 2 hr |
| Aug 6, 11:06 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Cass, Clarke, Davis and 25 more | 114 min |
| Aug 7, 10:28 PM CDT | Mesoscale Discussion | SPC | Audubon, Calhoun, Carroll, Cass, Cherokee, Crawford and 10 more | 2 hr |
| Aug 8, 1:06 PM CDT | Mesoscale Discussion | SPC | Benton, Cedar, Clinton, Des Moines, Dubuque, Henry and 11 more | 84 min |
| Aug 11, 6:38 PM CDT | Mesoscale Discussion | SPC | Cherokee, Lyon, Monona, O'Brien, Plymouth, Sioux and 1 more | 97 min |
| Aug 11, 9:42 PM CDT | Mesoscale Discussion | SPC | Cherokee, Ida, Lyon, O'Brien, Osceola, Plymouth and 2 more | 63 min |
| Aug 17, 3:44 PM CDT | Mesoscale Discussion | SPC | Clinton, Des Moines, Lee, Scott | 91 min |
| Aug 18, 12:31 PM CDT | Mesoscale Discussion | SPC | Crawford, Harrison, Ida, Mills, Monona, Plymouth and 3 more | 89 min |
| Aug 18, 2:51 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Cass, Fremont, Guthrie and 9 more | 84 min |
| Aug 18, 6:18 PM CDT | Mesoscale Discussion | SPC | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 27 min |
| Aug 18, 8:29 PM CDT | Mesoscale Discussion | SPC | Adams, Cass, Fremont, Mills, Montgomery, Page and 2 more | 61 min |
| Aug 18, 9:52 PM CDT | Mesoscale Discussion | SPC | Fremont, Page | 53 min |
| Aug 22, 1:42 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Carroll, Cass, Clarke and 23 more | 3 hr |
| Aug 23, 12:45 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Benton, Black Hawk, Boone and 56 more | 2 hr |
| Aug 23, 4:55 AM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 23 more | 2 hr |
| Aug 28, 10:41 AM CDT | Mesoscale Discussion | SPC | Audubon, Boone, Buena Vista, Calhoun, Carroll, Cass and 23 more | 94 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Mills County10
- Fremont County9
- Pottawattamie County9
- Woodbury County9
- Harrison County8
- Ida County8
- Monona County8
- Cass County8
- Montgomery County8
- Audubon County7
- Crawford County7
- Shelby County7
- Page County7
- Cherokee County6
- Plymouth County6
- Adams County6
- Benton County5
- Keokuk County5
- Lucas County5
- Adair County5
- Carroll County5
- Guthrie County5
- Ringgold County5
- Sac County5
- Taylor County5
- Union County5
- Allamakee County4
- Chickasaw County4
- Winneshiek County4
- Black Hawk County4
- Des Moines County4
- Grundy County4
- Hardin County4
- Iowa County4
- Mahaska County4
- Marion County4
- Marshall County4
- Monroe County4
- Poweshiek County4
- Tama County4
59 more counties
- Calhoun County4
- Clarke County4
- Decatur County4
- Greene County4
- Madison County4
- Warren County4
- Webster County4
- Lyon County4
- O'Brien County4
- Clayton County3
- Fayette County3
- Howard County3
- Mitchell County3
- Worth County3
- Bremer County3
- Buchanan County3
- Butler County3
- Clinton County3
- Dubuque County3
- Floyd County3
- Franklin County3
- Henry County3
- Jasper County3
- Johnson County3
- Jones County3
- Lee County3
- Linn County3
- Louisa County3
- Muscatine County3
- Scott County3
- Wapello County3
- Washington County3
- Boone County3
- Dallas County3
- Hamilton County3
- Wayne County3
- Sioux County3
- Osceola County3
- Cedar County2
- Delaware County2
- Jackson County2
- Jefferson County2
- Van Buren County2
- Appanoose County2
- Davis County2
- Polk County2
- Story County2
- Buena Vista County2
- Cerro Gordo County2
- Clay County2
- Dickinson County2
- Hancock County2
- Humboldt County2
- Kossuth County2
- Pocahontas County2
- Winnebago County2
- Wright County2
- Emmet County1
- Palo Alto County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20102012
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.