Alert archive / Iowa / Frost Advisories
Frost Advisories in Iowa, 2020
21 frost advisories in 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 frost advisories reaches back to 2005.
Frost Advisories by county
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Frost Advisories
- 21
- Busiest month
- May11 frost advisories
- Busiest day
- October 1, 20205 frost advisories
Over time
By month
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, 3:31 PM CDT | Frost Advisory | FSD | Clay, Dickinson, O'Brien, Plymouth, Sioux | 17 hr |
| May 8, 2:54 AM CDT | Frost Advisory | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 29 hr |
| May 8, 3:16 AM CDT | Frost Advisory | DVN | Jefferson, Lee, Van Buren | 29 hr |
| May 8, 3:23 AM CDT | Frost Advisory | DMX | Adair, Adams, Appanoose, Audubon, Boone, Calhoun and 25 more | 29 hr |
| May 8, 3:32 AM CDT | Frost Advisory | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 28 hr |
| May 10, 2:36 PM CDT | Frost Advisory | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more | 16 hr |
| May 10, 2:47 PM CDT | Frost Advisory | DMX | Appanoose, Black Hawk, Clarke, Davis, Decatur, Grundy and 16 more | 16 hr |
| May 11, 2:02 PM CDT | Frost Advisory | DVN | Benton, Buchanan, Clinton, Delaware, Dubuque, Jackson and 2 more | 18 hr |
| May 11, 3:27 PM CDT | Frost Advisory | ARX | Chickasaw, Clayton, Fayette, Floyd | 17 hr |
| May 11, 9:24 PM CDT | Frost Advisory | FSD | Clay, Lyon, O'Brien, Sioux | 11 hr |
| May 11, 9:30 PM CDT | Frost Advisory | DMX | Black Hawk, Bremer, Butler, Cerro Gordo, Emmet, Franklin and 11 more | 11 hr |
| Oct 1, 3:12 AM CDT | Frost Advisory | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 29 hr |
| Oct 1, 3:33 AM CDT | Frost Advisory | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 28 hr |
| Oct 1, 3:44 AM CDT | Frost Advisory | DMX | Adair, Adams, Audubon, Black Hawk, Boone, Bremer and 31 more | 28 hr |
| Oct 1, 3:49 AM CDT | Frost Advisory | DVN | Benton, Buchanan, Delaware, Dubuque, Jackson, Jones and 1 more | 28 hr |
| Oct 1, 3:56 AM CDT | Frost Advisory | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 28 hr |
| Oct 3, 1:44 PM CDT | Frost Advisory | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 18 hr |
| Oct 4, 2:54 AM CDT | Frost Advisory | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more | 29 hr |
| Oct 4, 10:37 AM CDT | Frost Advisory | ARX | Allamakee, Clayton | 21 hr |
| Oct 15, 3:36 AM CDT | Frost Advisory | OAX | Fremont, Mills, Montgomery, Page, Pottawattamie | 30 hr |
| Oct 15, 5:26 PM CDT | Frost Advisory | DMX | Adair, Adams, Appanoose, Audubon, Boone, Carroll and 20 more | 15 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Clay County4
- O'Brien County4
- Sioux County4
- Jasper County4
- Madison County4
- Polk County4
- Warren County4
- Benton County4
- Buchanan County4
- Delaware County4
- Dubuque County4
- Jackson County4
- Jones County4
- Linn County4
- Marshall County4
- Clayton County4
- Dickinson County3
- Plymouth County3
- Fremont County3
- Mills County3
- Montgomery County3
- Page County3
- Pottawattamie County3
- Jefferson County3
- Lee County3
- Van Buren County3
- Adair County3
- Adams County3
- Appanoose County3
- Audubon County3
- Boone County3
- Carroll County3
- Cass County3
- Clarke County3
- Crawford County3
- Dallas County3
- Decatur County3
- Greene County3
- Guthrie County3
- Lucas County3
59 more counties
- Marion County3
- Monroe County3
- Ringgold County3
- Taylor County3
- Union County3
- Wayne County3
- Lyon County3
- Clinton County3
- Black Hawk County3
- Grundy County3
- Tama County3
- Chickasaw County3
- Fayette County3
- Floyd County3
- Allamakee County3
- Harrison County2
- Monona County2
- Shelby County2
- Calhoun County2
- Davis County2
- Mahaska County2
- Pocahontas County2
- Sac County2
- Wapello County2
- Webster County2
- Buena Vista County2
- Cherokee County2
- Ida County2
- Osceola County2
- Woodbury County2
- Cedar County2
- Des Moines County2
- Henry County2
- Iowa County2
- Johnson County2
- Keokuk County2
- Louisa County2
- Muscatine County2
- Scott County2
- Washington County2
- Bremer County2
- Butler County2
- Cerro Gordo County2
- Emmet County2
- Franklin County2
- Hancock County2
- Hardin County2
- Humboldt County2
- Kossuth County2
- Palo Alto County2
- Winnebago County2
- Worth County2
- Wright County2
- Story County2
- Howard County2
- Mitchell County2
- Winneshiek County2
- Poweshiek County1
- Hamilton County1
The busiest days
Days with the most alerts issued, by UTC date.
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.