Alert archive / Iowa / Heat Advisories
Heat Advisories in Iowa, 2026
34 heat advisories in 2026. 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 heat advisories reaches back to 2005.
Heat Advisories by county
Each county as a circle sized by its count in 2026. Tap one for its archive.
- Heat Advisories
- 34
- Busiest month
- July19 heat advisories
- Busiest day
- July 24, 20264 heat 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 |
|---|---|---|---|---|
| Jun 8, 1:22 PM CDT | Heat Advisory | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 31 hr |
| Jun 8, 2:01 PM CDT | Heat Advisory | FSD | Buena Vista, Cherokee, Clay, Ida, Lyon, O'Brien and 4 more | 30 hr |
| Jun 8, 2:11 PM CDT | Heat Advisory | DMX | Adair, Adams, Appanoose, Audubon, Boone, Calhoun and 28 more | 30 hr |
| Jun 9, 2:00 AM CDT | Heat Advisory | DVN | Des Moines, Henry, Jefferson, Keokuk, Lee, Louisa and 2 more | 18 hr |
| Jun 26, 11:53 PM CDT | Heat Advisory | OAX | Harrison, Monona, Shelby | 4 days |
| Jun 27, 12:59 AM CDT | Heat Advisory | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 68 hr |
| Jun 30, 9:26 PM CDT | Heat Advisory | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 20 hr |
| Jun 30, 9:40 PM CDT | Heat Advisory | DMX | Bremer, Butler, Cerro Gordo, Franklin, Hancock, Worth and 1 more | 24 hr |
| Jun 30, 11:21 PM CDT | Heat Advisory | OAX | Fremont, Mills, Montgomery, Page, Pottawattamie | 11 hr |
| Jul 12, 1:33 PM CDT | Heat Advisory | ARX | Allamakee, Clayton, Winneshiek | 3 days |
| Jul 14, 12:54 PM CDT | Heat Advisory | DVN | Dubuque, Jackson | 31 hr |
| Jul 17, 1:31 AM CDT | Heat Advisory | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 19 hr |
| Jul 17, 12:32 PM CDT | Heat Advisory | DVN | Des Moines, Henry, Jefferson, Keokuk, Lee, Louisa and 4 more | 30 hr |
| Jul 17, 12:41 PM CDT | Heat Advisory | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 3 days |
| Jul 19, 11:56 AM CDT | Heat Advisory | DVN | Benton, Des Moines, Henry, Iowa, Jefferson, Keokuk and 4 more | 32 hr |
| Jul 19, 12:53 PM CDT | Heat Advisory | DMX | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more | 31 hr |
| Jul 19, 1:05 PM CDT | Heat Advisory | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 31 hr |
| Jul 20, 10:34 AM CDT | Heat Advisory | ARX | Chickasaw, Floyd, Howard, Mitchell | 8 hr |
| Jul 24, 1:48 AM CDT | Heat Advisory | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 39 hr |
| Jul 24, 2:27 AM CDT | Heat Advisory | DMX | Adair, Adams, Audubon, Boone, Calhoun, Carroll and 27 more | 58 hr |
| Jul 24, 11:23 AM CDT | Heat Advisory | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 29 hr |
| Jul 24, 12:52 PM CDT | Heat Advisory | ARX | Floyd, Mitchell | 31 hr |
| Jul 25, 4:54 PM CDT | Heat Advisory | OAX | Harrison, Monona, Shelby | 53 hr |
| Jul 26, 11:50 AM CDT | Heat Advisory | DMX | Cerro Gordo, Crawford, Emmet, Franklin, Hancock, Humboldt and 7 more | 34 hr |
| Jul 26, 12:39 PM CDT | Heat Advisory | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 31 hr |
| Aug 9, 1:41 AM CDT | Heat Advisory | DVN | Cedar, Des Moines, Henry, Iowa, Jefferson, Johnson and 7 more | 18 hr |
| Aug 10, 1:57 PM CDT | Heat Advisory | DVN | Des Moines, Henry, Jefferson, Keokuk, Lee, Louisa and 2 more | 30 hr |
| Aug 12, 1:18 AM CDT | Heat Advisory | DVN | Des Moines, Henry, Jefferson, Lee, Van Buren | 12 hr |
| Aug 30, 1:04 PM CDT | Heat Advisory | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more | 6 days |
| Aug 30, 1:32 PM CDT | Heat Advisory | DMX | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 32 more | 6 days |
| Sep 1, 11:04 AM CDT | Heat Advisory | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 4 days |
| Sep 4, 2:49 AM CDT | Heat Advisory | ARX | Clayton, Fayette | 16 hr |
| Sep 4, 7:42 AM CDT | Heat Advisory | FSD | Buena Vista, Cherokee, Ida, O'Brien, Plymouth, Sioux and 1 more | 10 hr |
| Sep 7, 11:34 AM CDT | Heat Advisory | OAX | Fremont, Mills, Montgomery, Page | 31 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Buena Vista County7
- Cherokee County7
- Ida County7
- O'Brien County7
- Plymouth County7
- Sioux County7
- Woodbury County7
- Des Moines County7
- Henry County7
- Jefferson County7
- Lee County7
- Van Buren County7
- Fremont County6
- Harrison County6
- Mills County6
- Monona County6
- Montgomery County6
- Page County6
- Shelby County6
- Clay County6
- Lyon County6
- Osceola County6
- Keokuk County6
- Louisa County6
- Washington County6
- Pottawattamie County5
- Crawford County5
- Sac County5
- Dickinson County5
- Adair County4
- Adams County4
- Audubon County4
- Boone County4
- Calhoun County4
- Carroll County4
- Cass County4
- Dallas County4
- Greene County4
- Guthrie County4
- Madison County4
59 more counties
- Palo Alto County4
- Pocahontas County4
- Polk County4
- Ringgold County4
- Story County4
- Taylor County4
- Union County4
- Warren County4
- Webster County4
- Cerro Gordo County4
- Franklin County4
- Hancock County4
- Worth County4
- Wright County4
- Appanoose County3
- Clarke County3
- Davis County3
- Decatur County3
- Jasper County3
- Lucas County3
- Mahaska County3
- Marion County3
- Monroe County3
- Poweshiek County3
- Wapello County3
- Wayne County3
- Clayton County3
- Floyd County3
- Mitchell County3
- Muscatine County3
- Scott County3
- Iowa County3
- Emmet County3
- Hamilton County3
- Hardin County3
- Humboldt County3
- Kossuth County3
- Winnebago County3
- Allamakee County2
- Chickasaw County2
- Fayette County2
- Howard County2
- Winneshiek County2
- Bremer County2
- Butler County2
- Dubuque County2
- Jackson County2
- Benton County2
- Black Hawk County2
- Grundy County2
- Marshall County2
- Tama County2
- Cedar County2
- Johnson County2
- Buchanan County1
- Clinton County1
- Delaware County1
- Jones County1
- Linn County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
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.