Alert archive / Iowa / Mesoscale Discussions / 2020
Mesoscale Discussions in Iowa, May 2020
15 mesoscale discussions in May 2020. 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 May 2020. Tap one for its archive.
- Mesoscale Discussions
- 15
- Busiest day
- May 14, 20204 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 |
|---|---|---|---|---|
| May 13, 11:48 PM CDT | Mesoscale Discussion | SPC | Adams, Decatur, Fremont, Mills, Montgomery, Page and 2 more | 2 hr |
| May 14, 3:55 PM CDT | Mesoscale Discussion | SPC | Appanoose, Clarke, Davis, Decatur, Jefferson, Lucas and 6 more | 95 min |
| May 14, 5:19 PM CDT | Mesoscale Discussion | SPC | Des Moines, Henry, Jefferson, Lee, Louisa, Muscatine and 3 more | 116 min |
| May 14, 6:01 PM CDT | Mesoscale Discussion | SPC | Appanoose, Clarke, Decatur, Lucas, Ringgold, Wayne | 119 min |
| May 14, 8:22 PM CDT | Mesoscale Discussion | SPC | Appanoose, Davis, Wayne | 113 min |
| May 14, 9:38 PM CDT | Mesoscale Discussion | SPC | Des Moines, Louisa, Muscatine | 52 min |
| May 16, 6:45 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Boone, Carroll and 36 more | 90 min |
| May 23, 11:29 AM CDT | Mesoscale Discussion | SPC | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 14 more | 2 hr |
| May 23, 2:51 PM CDT | Mesoscale Discussion | SPC | Benton, Buchanan, Cedar, Clayton, Clinton, Delaware and 7 more | 84 min |
| May 24, 4:13 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 56 more | 62 min |
| May 24, 1:13 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Boone, Cass and 21 more | 92 min |
| May 24, 3:25 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Carroll, Cass and 19 more | 95 min |
| May 26, 12:29 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Boone, Clarke, Dallas and 24 more | 2 hr |
| May 26, 3:53 PM CDT | Mesoscale Discussion | SPC | Adair, Boone, Butler, Calhoun, Cerro Gordo, Dallas and 24 more | 67 min |
| May 26, 6:02 PM CDT | Mesoscale Discussion | SPC | Allamakee, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 10 more | 88 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Decatur County8
- Ringgold County8
- Appanoose County7
- Clarke County7
- Wayne County7
- Adams County6
- Taylor County6
- Lucas County6
- Adair County6
- Boone County6
- Dallas County6
- Guthrie County6
- Madison County6
- Polk County6
- Union County6
- Warren County6
- Fremont County5
- Mills County5
- Montgomery County5
- Page County5
- Monroe County5
- Greene County5
- Jasper County5
- Marion County5
- Davis County4
- Jefferson County4
- Audubon County4
- Cass County4
- Marshall County4
- Pottawattamie County4
- Shelby County4
- Story County4
- Grundy County4
- Van Buren County3
- Wapello County3
- Des Moines County3
- Henry County3
- Louisa County3
- Muscatine County3
- Scott County3
54 more counties
- Washington County3
- Carroll County3
- Keokuk County3
- Mahaska County3
- Poweshiek County3
- Buchanan County3
- Butler County3
- Cerro Gordo County3
- Floyd County3
- Franklin County3
- Hamilton County3
- Hardin County3
- Worth County3
- Lee County2
- Harrison County2
- Iowa County2
- Benton County2
- Cedar County2
- Clinton County2
- Delaware County2
- Dubuque County2
- Jackson County2
- Johnson County2
- Jones County2
- Linn County2
- Clayton County2
- Fayette County2
- Black Hawk County2
- Calhoun County2
- Crawford County2
- Hancock County2
- Humboldt County2
- Kossuth County2
- Tama County2
- Webster County2
- Winnebago County2
- Wright County2
- Howard County2
- Mitchell County2
- Buena Vista County1
- Cherokee County1
- Clay County1
- Dickinson County1
- Emmet County1
- Ida County1
- O'Brien County1
- Osceola County1
- Palo Alto County1
- Pocahontas County1
- Sac County1
- Allamakee County1
- Bremer County1
- Chickasaw County1
- Winneshiek County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20192021
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.