Alert archive / Iowa / Excessive Heat Warnings
Excessive Heat Warnings in Iowa, 2023
10 excessive heat warnings in 2023. 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 2023. Tap one for its archive.
- Excessive Heat Warnings
- 10
- Busiest month
- July5 excessive heat warnings
- Busiest day
- July 27, 20234 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 |
|---|---|---|---|---|
| Jul 27, 3:19 AM CDT | Excessive Heat Warning | DMX | Adair, Adams, Appanoose, Audubon, Boone, Calhoun and 27 more | 42 hr |
| Jul 27, 3:50 AM CDT | Excessive Heat Warning | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 41 hr |
| Jul 27, 3:59 AM CDT | Excessive Heat Warning | DVN | Benton, Cedar, Clinton, Des Moines, Henry, Iowa and 11 more | 41 hr |
| Jul 27, 8:55 AM CDT | Excessive Heat Warning | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 11 hr |
| Jul 28, 2:46 AM CDT | Excessive Heat Warning | FSD | Buena Vista, Cherokee, Clay, Ida, O'Brien, Plymouth and 2 more | 17 hr |
| Aug 18, 2:18 PM CDT | Excessive Heat Warning | DMX | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more | 7 days |
| Aug 18, 3:16 PM CDT | Excessive Heat Warning | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 7 days |
| Aug 19, 3:01 AM CDT | Excessive Heat Warning | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more | 7 days |
| Aug 20, 2:12 PM CDT | Excessive Heat Warning | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 4 days |
| Aug 20, 2:41 PM CDT | Excessive Heat Warning | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 4 days |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Buena Vista County3
- Cherokee County3
- Clay County3
- Ida County3
- O'Brien County3
- Plymouth County3
- Sioux County3
- Woodbury County3
- Adair County2
- Adams County2
- Appanoose County2
- Audubon County2
- Boone County2
- Calhoun County2
- Carroll County2
- Cass County2
- Clarke County2
- Crawford County2
- Dallas County2
- Davis County2
- Decatur County2
- Greene County2
- Guthrie County2
- Jasper County2
- Lucas County2
- Madison County2
- Mahaska County2
- Marion County2
- Marshall County2
- Monroe County2
- Polk County2
- Poweshiek County2
- Ringgold County2
- Sac County2
- Story County2
- Tama County2
- Taylor County2
- Union County2
- Wapello County2
- Warren County2
59 more counties
- Wayne County2
- Fremont County2
- Harrison County2
- Mills County2
- Monona County2
- Montgomery County2
- Page County2
- Pottawattamie County2
- Shelby County2
- Benton County2
- Cedar County2
- Clinton County2
- Des Moines County2
- Henry County2
- Iowa County2
- Jefferson County2
- Johnson County2
- Jones County2
- Keokuk County2
- Lee County2
- Linn County2
- Louisa County2
- Muscatine County2
- Scott County2
- Van Buren County2
- Washington County2
- Dickinson County2
- Lyon County2
- Osceola County2
- Black Hawk County1
- Bremer County1
- Butler County1
- Cerro Gordo County1
- Emmet County1
- Franklin County1
- Grundy County1
- Hamilton County1
- Hancock County1
- Hardin County1
- Humboldt County1
- Kossuth County1
- Palo Alto County1
- Pocahontas County1
- Webster County1
- Winnebago County1
- Worth County1
- Wright County1
- Buchanan County1
- Delaware County1
- Dubuque County1
- Jackson County1
- Allamakee County1
- Chickasaw County1
- Clayton County1
- Fayette County1
- Floyd County1
- Howard County1
- Mitchell County1
- Winneshiek County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20222024
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.