Alert archive / Iowa / Heat Advisories
Heat Advisories in Iowa, 2021
35 heat advisories in 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 heat advisories reaches back to 2005.
Heat Advisories by county
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Heat Advisories
- 35
- Busiest month
- August19 heat advisories
- Busiest day
- July 27, 20215 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 10, 3:31 AM CDT | Heat Advisory | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 16 hr |
| Jun 16, 2:51 PM CDT | Heat Advisory | DVN | Benton, Henry, Iowa, Jefferson, Johnson, Keokuk and 4 more | 28 hr |
| Jun 16, 3:06 PM CDT | Heat Advisory | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 29 hr |
| Jun 16, 3:34 PM CDT | Heat Advisory | DMX | Adair, Adams, Appanoose, Audubon, Boone, Calhoun and 31 more | 28 hr |
| Jun 17, 3:00 AM CDT | Heat Advisory | FSD | Buena Vista, Cherokee, Ida, Woodbury | 16 hr |
| Jul 5, 3:24 AM CDT | Heat Advisory | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 17 hr |
| Jul 23, 3:06 AM CDT | Heat Advisory | OAX | Fremont, Mills, Montgomery, Page | 41 hr |
| Jul 23, 3:17 AM CDT | Heat Advisory | DMX | Adams, Appanoose, Clarke, Davis, Decatur, Lucas and 10 more | 41 hr |
| Jul 23, 3:18 AM CDT | Heat Advisory | DVN | Benton, Cedar, Clinton, Des Moines, Henry, Iowa and 12 more | 41 hr |
| Jul 26, 3:11 AM CDT | Heat Advisory | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 42 hr |
| Jul 26, 3:18 AM CDT | Heat Advisory | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 4 days |
| Jul 27, 3:12 AM CDT | Heat Advisory | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more | 64 hr |
| Jul 27, 3:44 AM CDT | Heat Advisory | DMX | Calhoun, Carroll, Crawford, Emmet, Humboldt, Kossuth and 3 more | 16 hr |
| Jul 27, 2:22 PM CDT | Heat Advisory | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 31 hr |
| Jul 27, 3:04 PM CDT | Heat Advisory | DMX | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more | 52 hr |
| Jul 27, 3:10 PM CDT | Heat Advisory | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 30 hr |
| Aug 8, 2:24 PM CDT | Heat Advisory | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more | 53 hr |
| Aug 8, 2:37 PM CDT | Heat Advisory | OAX | Fremont, Mills, Montgomery, Page, Pottawattamie | 54 hr |
| Aug 8, 3:39 PM CDT | Heat Advisory | DMX | Adair, Adams, Appanoose, Black Hawk, Boone, Bremer and 26 more | 51 hr |
| Aug 9, 1:55 PM CDT | Heat Advisory | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Winneshiek | 28 hr |
| Aug 10, 3:02 AM CDT | Heat Advisory | OAX | Fremont, Harrison, Mills, Montgomery, Page, Pottawattamie and 1 more | 42 hr |
| Aug 10, 12:56 PM CDT | Heat Advisory | DMX | Adair, Adams, Appanoose, Audubon, Cass, Clarke and 18 more | 30 hr |
| Aug 10, 2:26 PM CDT | Heat Advisory | ARX | Clayton | 27 hr |
| Aug 10, 2:28 PM CDT | Heat Advisory | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more | 29 hr |
| Aug 12, 2:57 AM CDT | Heat Advisory | DVN | Lee | 8 hr |
| Aug 23, 2:45 PM CDT | Heat Advisory | DVN | Benton, Cedar, Clinton, Des Moines, Henry, Iowa and 12 more | 29 hr |
| Aug 23, 3:13 PM CDT | Heat Advisory | DMX | Adair, Adams, Appanoose, Audubon, Boone, Carroll and 25 more | 28 hr |
| Aug 23, 4:14 PM CDT | Heat Advisory | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 28 hr |
| Aug 24, 3:31 AM CDT | Heat Advisory | FSD | Plymouth, Woodbury | 11 hr |
| Aug 24, 3:46 PM CDT | Heat Advisory | OAX | Fremont, Page | 28 hr |
| Aug 25, 4:07 AM CDT | Heat Advisory | OAX | Fremont, Harrison, Mills, Montgomery, Page, Pottawattamie and 1 more | 40 hr |
| Aug 26, 3:27 AM CDT | Heat Advisory | DVN | Des Moines, Henry, Jefferson, Keokuk, Lee, Louisa and 4 more | 17 hr |
| Aug 26, 3:30 AM CDT | Heat Advisory | DMX | Adair, Adams, Appanoose, Audubon, Cass, Clarke and 16 more | 17 hr |
| Aug 27, 1:34 PM CDT | Heat Advisory | DVN | Lee | 29 hr |
| Aug 27, 3:07 PM CDT | Heat Advisory | DVN | Des Moines, Henry, Van Buren | 28 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Lee County9
- Henry County8
- Van Buren County8
- Fremont County8
- Page County8
- Jefferson County7
- Keokuk County7
- Washington County7
- Mills County7
- Montgomery County7
- Adams County7
- Appanoose County7
- Clarke County7
- Davis County7
- Decatur County7
- Lucas County7
- Mahaska County7
- Marion County7
- Monroe County7
- Ringgold County7
- Taylor County7
- Union County7
- Wapello County7
- Warren County7
- Wayne County7
- Des Moines County7
- Woodbury County6
- Benton County6
- Iowa County6
- Johnson County6
- Linn County6
- Pottawattamie County6
- Adair County6
- Cass County6
- Dallas County6
- Guthrie County6
- Madison County6
- Polk County6
- Poweshiek County6
- Louisa County6
59 more counties
- Muscatine County6
- Scott County6
- Buena Vista County5
- Cherokee County5
- Ida County5
- Plymouth County5
- Harrison County5
- Shelby County5
- Audubon County5
- Jasper County5
- Cedar County5
- Clinton County5
- Jackson County5
- Jones County5
- Clay County4
- Dickinson County4
- Lyon County4
- O'Brien County4
- Osceola County4
- Sioux County4
- Boone County4
- Carroll County4
- Crawford County4
- Marshall County4
- Story County4
- Tama County4
- Monona County3
- Calhoun County3
- Greene County3
- Humboldt County3
- Pocahontas County3
- Sac County3
- Buchanan County3
- Delaware County3
- Dubuque County3
- Clayton County3
- Hamilton County2
- Webster County2
- Emmet County2
- Kossuth County2
- Palo Alto County2
- Black Hawk County2
- Bremer County2
- Butler County2
- Grundy County2
- Hardin County2
- Allamakee County2
- Chickasaw County2
- Fayette County2
- Floyd County2
- Winneshiek County2
- Cerro Gordo County1
- Franklin County1
- Hancock County1
- Winnebago County1
- Worth County1
- Wright County1
- Howard County1
- Mitchell County1
The busiest days
Days with the most alerts issued, by UTC date.
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.