Alert archive / Iowa / Heat Advisories
Heat Advisories in Iowa, 2020
25 heat 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 heat advisories reaches back to 2005.
Heat Advisories by county
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Heat Advisories
- 25
- Busiest month
- July16 heat advisories
- Busiest day
- July 17, 20205 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 |
|---|---|---|---|---|
| Jul 7, 2:38 PM CDT | Heat Advisory | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more | 28 hr |
| Jul 7, 3:38 PM CDT | Heat Advisory | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 27 hr |
| Jul 8, 3:15 AM CDT | Heat Advisory | DMX | Appanoose, Black Hawk, Boone, Bremer, Butler, Cerro Gordo and 30 more | 17 hr |
| Jul 16, 2:34 PM CDT | Heat Advisory | FSD | Buena Vista, Cherokee, Clay, Ida, Lyon, O'Brien and 4 more | 29 hr |
| Jul 17, 2:35 AM CDT | Heat Advisory | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 41 hr |
| Jul 17, 3:04 AM CDT | Heat Advisory | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more | 41 hr |
| Jul 17, 3:29 AM CDT | Heat Advisory | DMX | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more | 41 hr |
| Jul 17, 3:30 AM CDT | Heat Advisory | OAX | Fremont, Mills, Montgomery, Page, Pottawattamie | 17 hr |
| Jul 17, 3:30 AM CDT | Heat Advisory | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 41 hr |
| Jul 23, 3:03 AM CDT | Heat Advisory | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 66 hr |
| Jul 23, 4:25 PM CDT | Heat Advisory | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 53 hr |
| Jul 24, 3:02 PM CDT | Heat Advisory | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 29 hr |
| Jul 25, 2:30 AM CDT | Heat Advisory | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more | 41 hr |
| Jul 25, 2:40 AM CDT | Heat Advisory | DMX | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more | 17 hr |
| Jul 25, 2:44 AM CDT | Heat Advisory | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 17 hr |
| Jul 26, 2:53 AM CDT | Heat Advisory | ARX | Allamakee, Clayton, Fayette, Winneshiek | 16 hr |
| Aug 9, 2:55 AM CDT | Heat Advisory | OAX | Fremont, Mills, Page | 13 hr |
| Aug 24, 3:21 AM CDT | Heat Advisory | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 16 hr |
| Aug 24, 3:54 AM CDT | Heat Advisory | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 17 hr |
| Aug 24, 12:18 PM CDT | Heat Advisory | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more | 7 hr |
| Aug 24, 1:30 PM CDT | Heat Advisory | DMX | Black Hawk, Boone, Bremer, Butler, Calhoun, Cerro Gordo and 26 more | 6 hr |
| Aug 25, 2:48 AM CDT | Heat Advisory | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 16 hr |
| Aug 25, 3:07 AM CDT | Heat Advisory | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more | 16 hr |
| Aug 25, 3:25 AM CDT | Heat Advisory | FSD | Lyon, Osceola | 17 hr |
| Aug 26, 2:53 AM CDT | Heat Advisory | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 16 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Allamakee County7
- Clayton County7
- Fayette County7
- Winneshiek County7
- Chickasaw County6
- Floyd County6
- Howard County6
- Mitchell County6
- Benton County5
- Buchanan County5
- Cedar County5
- Clinton County5
- Delaware County5
- Des Moines County5
- Dubuque County5
- Henry County5
- Iowa County5
- Jackson County5
- Jefferson County5
- Johnson County5
- Jones County5
- Keokuk County5
- Lee County5
- Linn County5
- Louisa County5
- Muscatine County5
- Scott County5
- Van Buren County5
- Washington County5
- Lyon County5
- Osceola County5
- Black Hawk County4
- Boone County4
- Bremer County4
- Butler County4
- Cerro Gordo County4
- Davis County4
- Emmet County4
- Franklin County4
- Grundy County4
59 more counties
- Hamilton County4
- Hancock County4
- Hardin County4
- Humboldt County4
- Jasper County4
- Kossuth County4
- Mahaska County4
- Marion County4
- Marshall County4
- Monroe County4
- Palo Alto County4
- Poweshiek County4
- Story County4
- Tama County4
- Wapello County4
- Webster County4
- Winnebago County4
- Worth County4
- Wright County4
- Buena Vista County4
- Cherokee County4
- Clay County4
- Ida County4
- O'Brien County4
- Plymouth County4
- Sioux County4
- Woodbury County4
- Fremont County4
- Mills County4
- Page County4
- Appanoose County3
- Clarke County3
- Dallas County3
- Lucas County3
- Madison County3
- Polk County3
- Warren County3
- Wayne County3
- Calhoun County3
- Greene County3
- Pocahontas County3
- Sac County3
- Montgomery County3
- Pottawattamie County3
- Dickinson County3
- Adair County2
- Adams County2
- Audubon County2
- Carroll County2
- Cass County2
- Crawford County2
- Decatur County2
- Guthrie County2
- Ringgold County2
- Taylor County2
- Union County2
- Harrison County2
- Monona County2
- Shelby County2
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.