Alert archive / Iowa / Excessive Heat Warnings
Excessive Heat Warnings in Iowa, 2018
4 excessive heat warnings in 2018. 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 2018. Tap one for its archive.
- Excessive Heat Warnings
- 4
- Busiest month
- June4 excessive heat warnings
- Busiest day
- June 28, 20183 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 |
|---|---|---|---|---|
| Jun 17, 3:01 PM CDT | Excessive Heat Warning | DVN | Johnson, Linn, Scott | 28 hr |
| Jun 28, 3:13 AM CDT | Excessive Heat Warning | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 64 hr |
| Jun 28, 3:31 PM CDT | Excessive Heat Warning | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more | 54 hr |
| Jun 28, 3:42 PM CDT | Excessive Heat Warning | DMX | Black Hawk, Bremer, Butler, Cerro Gordo, Franklin, Grundy and 4 more | 29 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Johnson County2
- Linn County2
- Scott County2
- Allamakee County1
- Chickasaw County1
- Clayton County1
- Fayette County1
- Floyd County1
- Howard County1
- Mitchell County1
- Winneshiek County1
- Benton County1
- Buchanan County1
- Cedar County1
- Clinton County1
- Delaware County1
- Des Moines County1
- Dubuque County1
- Henry County1
- Iowa County1
- Jackson County1
- Jefferson County1
- Jones County1
- Keokuk County1
- Lee County1
- Louisa County1
- Muscatine County1
- Van Buren County1
- Washington County1
- Black Hawk County1
- Bremer County1
- Butler County1
- Cerro Gordo County1
- Franklin County1
- Grundy County1
- Hancock County1
- Tama County1
- Winnebago County1
- Worth County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20172019
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.