Alert archive / Iowa / Freeze Warnings / 2020
Freeze Warnings in Iowa, May 2020
11 freeze warnings 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 freeze warnings reaches back to 2005.
Freeze Warnings by county
Each county as a circle sized by its count in May 2020. Tap one for its archive.
- Freeze Warnings
- 11
- Busiest day
- May 10, 20204 freeze warnings
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 7, 3:49 AM CDT | Freeze Warning | FSD | Lyon, Osceola | 29 hr |
| May 8, 3:13 AM CDT | Freeze Warning | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 29 hr |
| May 8, 3:16 AM CDT | Freeze Warning | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 12 more | 29 hr |
| May 8, 3:23 AM CDT | Freeze Warning | DMX | Black Hawk, Bremer, Butler, Cerro Gordo, Emmet, Franklin and 14 more | 29 hr |
| May 9, 3:38 AM CDT | Freeze Warning | FSD | Lyon, O'Brien, Osceola, Sioux | 29 hr |
| May 10, 2:49 AM CDT | Freeze Warning | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 28 hr |
| May 10, 2:51 AM CDT | Freeze Warning | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 29 hr |
| May 10, 2:54 AM CDT | Freeze Warning | DMX | Adair, Adams, Audubon, Boone, Bremer, Butler and 23 more | 28 hr |
| May 10, 4:20 AM CDT | Freeze Warning | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 28 hr |
| May 11, 2:30 PM CDT | Freeze Warning | FSD | Dickinson, Osceola | 18 hr |
| May 11, 2:41 PM CDT | Freeze Warning | ARX | Allamakee, Howard, Mitchell, Winneshiek | 17 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Osceola County4
- Lyon County3
- Allamakee County3
- Howard County3
- Mitchell County3
- Winneshiek County3
- Chickasaw County2
- Clayton County2
- Fayette County2
- Floyd County2
- Bremer County2
- Butler County2
- Cerro Gordo County2
- Emmet County2
- Franklin County2
- Hamilton County2
- Hancock County2
- Hardin County2
- Humboldt County2
- Kossuth County2
- Palo Alto County2
- Story County2
- Winnebago County2
- Worth County2
- Wright County2
- O'Brien County2
- Sioux County2
- Dickinson County2
- Benton County1
- Buchanan County1
- Cedar County1
- Clinton County1
- Delaware County1
- Des Moines County1
- Dubuque County1
- Henry County1
- Iowa County1
- Jackson County1
- Johnson County1
- Jones County1
39 more counties
- Keokuk County1
- Linn County1
- Louisa County1
- Muscatine County1
- Scott County1
- Washington County1
- Black Hawk County1
- Grundy County1
- Marshall County1
- Poweshiek County1
- Tama County1
- Fremont County1
- Harrison County1
- Mills County1
- Monona County1
- Montgomery County1
- Page County1
- Pottawattamie County1
- Shelby County1
- Adair County1
- Adams County1
- Audubon County1
- Boone County1
- Calhoun County1
- Carroll County1
- Cass County1
- Crawford County1
- Dallas County1
- Greene County1
- Guthrie County1
- Pocahontas County1
- Sac County1
- Webster County1
- Buena Vista County1
- Cherokee County1
- Clay County1
- Ida County1
- Plymouth County1
- Woodbury 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.