Alert archive / Iowa / Mesoscale Discussions / 2020
Mesoscale Discussions in Iowa, September 2020
7 mesoscale discussions in September 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 September 2020. Tap one for its archive.
- Mesoscale Discussions
- 7
- Busiest day
- September 6, 20205 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 |
|---|---|---|---|---|
| Sep 5, 7:53 PM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 19 more | 2 hr |
| Sep 5, 11:26 PM CDT | Mesoscale Discussion | SPC | Benton, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 28 more | 94 min |
| Sep 6, 1:06 AM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 28 more | 84 min |
| Sep 6, 2:32 AM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Black Hawk, Boone, Bremer, Buchanan and 45 more | 88 min |
| Sep 6, 5:30 AM CDT | Mesoscale Discussion | SPC | Benton, Black Hawk, Boone, Bremer, Buchanan, Butler and 31 more | 90 min |
| Sep 6, 9:32 PM CDT | Mesoscale Discussion | SPC | Clinton, Scott | 118 min |
| Sep 7, 7:14 PM CDT | Mesoscale Discussion | SPC | Appanoose, Clarke, Davis, Decatur, Des Moines, Henry and 7 more | 2 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Benton County5
- Black Hawk County5
- Bremer County5
- Buchanan County5
- Butler County5
- Cerro Gordo County5
- Chickasaw County5
- Delaware County5
- Fayette County5
- Floyd County5
- Franklin County5
- Grundy County5
- Hancock County5
- Hardin County5
- Tama County5
- Winnebago County5
- Wright County5
- Emmet County4
- Howard County4
- Kossuth County4
- Mitchell County4
- Worth County4
- Hamilton County4
- Humboldt County4
- Iowa County4
- Johnson County4
- Linn County4
- Marshall County4
- Allamakee County3
- Clayton County3
- Winneshiek County3
- Dickinson County3
- Palo Alto County3
- Poweshiek County3
- Washington County3
- Clinton County3
- Scott County3
- Clay County2
- Osceola County2
- Boone County2
24 more counties
- Cedar County2
- Des Moines County2
- Dubuque County2
- Jackson County2
- Jasper County2
- Jones County2
- Louisa County2
- Muscatine County2
- Story County2
- Webster County2
- Keokuk County1
- Pocahontas County1
- Appanoose County1
- Clarke County1
- Davis County1
- Decatur County1
- Henry County1
- Jefferson County1
- Lee County1
- Lucas County1
- Monroe County1
- Van Buren County1
- Wapello County1
- Wayne 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.