Alert archive / Iowa / Excessive Heat Watches
Excessive Heat Watches in Iowa, 2021
2 excessive heat watches 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 excessive heat watches reaches back to 2005.
Excessive Heat Watches by county
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Excessive Heat Watches
- 2
- Busiest month
- July2 excessive heat watches
- Busiest day
- July 26, 20212 excessive heat watches
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 26, 3:11 AM CDT | Excessive Heat Watch | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 35 hr |
| Jul 26, 3:33 AM CDT | Excessive Heat Watch | DMX | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more | 36 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Buena Vista County1
- Cherokee County1
- Clay County1
- Dickinson County1
- Ida County1
- Lyon County1
- O'Brien County1
- Osceola County1
- Plymouth County1
- Sioux County1
- Woodbury 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
22 more counties
- 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 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. Warning verification from the Mesonet's Cow. Rebuilt daily.