Alert archive / Iowa / Frost Advisories / 2021
Frost Advisories in Iowa, May 2021
15 frost advisories in May 2021. 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 frost advisories reaches back to 2005.
Frost Advisories by county
Each county as a circle sized by its count in May 2021. Tap one for its archive.
- Frost Advisories
- 15
- Busiest day
- May 10, 20215 frost advisories
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 5, 2:24 PM CDT | Frost Advisory | FSD | Lyon | 18 hr |
| May 7, 1:37 PM CDT | Frost Advisory | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 18 hr |
| May 7, 1:48 PM CDT | Frost Advisory | DVN | Buchanan, Clinton, Delaware, Dubuque, Jackson, Jones | 18 hr |
| May 10, 1:52 PM CDT | Frost Advisory | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 18 hr |
| May 10, 2:14 PM CDT | Frost Advisory | DMX | Black Hawk, Bremer, Butler, Calhoun, Cerro Gordo, Emmet and 14 more | 18 hr |
| May 10, 2:28 PM CDT | Frost Advisory | DVN | Benton, Buchanan, Delaware, Dubuque, Jackson, Jones and 1 more | 18 hr |
| May 10, 3:12 PM CDT | Frost Advisory | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 17 hr |
| May 10, 3:24 PM CDT | Frost Advisory | OAX | Monona | 17 hr |
| May 11, 1:45 PM CDT | Frost Advisory | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 18 hr |
| May 11, 2:26 PM CDT | Frost Advisory | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 13 more | 17 hr |
| May 11, 2:32 PM CDT | Frost Advisory | DMX | Black Hawk, Bremer, Butler, Cerro Gordo, Franklin, Grundy and 5 more | 16 hr |
| May 28, 3:30 AM CDT | Frost Advisory | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 7 more | 28 hr |
| May 28, 10:36 AM CDT | Frost Advisory | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 20 hr |
| May 28, 2:11 PM CDT | Frost Advisory | FSD | Dickinson | 17 hr |
| May 28, 2:58 PM CDT | Frost Advisory | DMX | Black Hawk, Bremer, Butler, Cerro Gordo, Emmet, Franklin and 14 more | 16 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Allamakee County4
- Chickasaw County4
- Clayton County4
- Fayette County4
- Floyd County4
- Howard County4
- Mitchell County4
- Winneshiek County4
- Buchanan County4
- Delaware County4
- Dubuque County4
- Jackson County4
- Jones County4
- Clinton County3
- Black Hawk County3
- Bremer County3
- Butler County3
- Cerro Gordo County3
- Franklin County3
- Grundy County3
- Hardin County3
- Worth County3
- Benton County3
- Linn County3
- Lyon County2
- Emmet County2
- Hamilton County2
- Hancock County2
- Humboldt County2
- Kossuth County2
- Winnebago County2
- Wright County2
- Dickinson County2
- Cedar County2
- Iowa County2
- Johnson County2
- Muscatine County2
- Scott County2
- Marshall County2
- Poweshiek County2
24 more counties
- Tama County2
- Calhoun County1
- Palo Alto County1
- Pocahontas County1
- Sac County1
- Webster County1
- Buena Vista County1
- Cherokee County1
- Clay County1
- Ida County1
- O'Brien County1
- Osceola County1
- Plymouth County1
- Sioux County1
- Woodbury County1
- Monona County1
- Des Moines County1
- Henry County1
- Jefferson County1
- Keokuk County1
- Louisa County1
- Washington County1
- Jasper County1
- Story County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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. Rebuilt daily.