Alert archive / Iowa / Excessive Heat Warnings
Excessive Heat Warnings in Iowa, 2024
12 excessive heat warnings in 2024. 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 excessive heat warnings reaches back to 2005.
Excessive Heat Warnings by county
Each county as a circle sized by its count in 2024. Tap one for its archive.
- Excessive Heat Warnings
- 12
- Busiest month
- August8 excessive heat warnings
- Busiest day
- August 26, 20244 excessive heat warnings
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 |
|---|---|---|---|---|
| Jun 24, 8:56 AM CDT | Excessive Heat Warning | OAX | Harrison, Mills, Monona, Pottawattamie | 11 hr |
| Jun 24, 1:58 PM CDT | Excessive Heat Warning | FSD | Buena Vista, Cherokee, Ida, Plymouth, Woodbury | 6 hr |
| Jul 13, 2:56 AM CDT | Excessive Heat Warning | OAX | Fremont, Mills, Montgomery, Page, Pottawattamie | 65 hr |
| Jul 29, 2:35 PM CDT | Excessive Heat Warning | OAX | Fremont, Harrison, Mills, Montgomery, Page, Pottawattamie and 1 more | 52 hr |
| Aug 24, 1:29 PM CDT | Excessive Heat Warning | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 1 more | 31 hr |
| Aug 24, 1:53 PM CDT | Excessive Heat Warning | FSD | Buena Vista, Cherokee, Clay, Ida, Lyon, O'Brien and 4 more | 30 hr |
| Aug 25, 2:11 AM CDT | Excessive Heat Warning | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more | 66 hr |
| Aug 25, 2:47 AM CDT | Excessive Heat Warning | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 41 hr |
| Aug 26, 1:48 AM CDT | Excessive Heat Warning | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 18 hr |
| Aug 26, 2:55 AM CDT | Excessive Heat Warning | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 17 hr |
| Aug 26, 12:18 PM CDT | Excessive Heat Warning | DMX | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more | 8 hr |
| Aug 26, 1:57 PM CDT | Excessive Heat Warning | ARX | Clayton | 29 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Mills County5
- Pottawattamie County5
- Harrison County4
- Fremont County4
- Montgomery County4
- Page County4
- Monona County3
- Buena Vista County3
- Cherokee County3
- Ida County3
- Plymouth County3
- Woodbury County3
- Shelby County2
- Clay County2
- Lyon County2
- O'Brien County2
- Osceola County2
- Sioux County2
- Clayton County2
- Benton County1
- Buchanan County1
- Cedar County1
- Clinton County1
- Delaware County1
- Des Moines County1
- Dubuque County1
- Henry County1
- Iowa County1
- Jackson County1
- Jefferson County1
- Johnson County1
- Jones County1
- Keokuk County1
- Lee County1
- Linn County1
- Louisa County1
- Muscatine County1
- Scott County1
- Van Buren County1
- Washington County1
59 more counties
- Allamakee County1
- Chickasaw County1
- Fayette County1
- Floyd County1
- Howard County1
- Mitchell County1
- Winneshiek County1
- Dickinson County1
- Adair County1
- Adams County1
- Appanoose County1
- Audubon County1
- Black Hawk County1
- Boone County1
- Bremer County1
- Butler County1
- Calhoun County1
- Carroll County1
- Cass County1
- Cerro Gordo County1
- Clarke County1
- Crawford County1
- Dallas County1
- Davis County1
- Decatur County1
- Emmet County1
- Franklin County1
- Greene County1
- Grundy County1
- Guthrie County1
- Hamilton County1
- Hancock County1
- Hardin County1
- Humboldt County1
- Jasper County1
- Kossuth County1
- Lucas County1
- Madison County1
- Mahaska County1
- Marion County1
- Marshall County1
- Monroe County1
- Palo Alto County1
- Pocahontas County1
- Polk County1
- Poweshiek County1
- Ringgold County1
- Sac County1
- Story County1
- Tama County1
- Taylor County1
- Union County1
- Wapello County1
- Warren County1
- Wayne County1
- Webster County1
- Winnebago County1
- Worth County1
- Wright County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20232025
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.