Alert archive / Iowa / Severe Thunderstorm Watches / 2018
Severe Thunderstorm Watches in Iowa, August 2018
5 severe thunderstorm watches in August 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 severe thunderstorm watches reaches back to 1997.
Severe Thunderstorm Watches by county
Each county as a circle sized by its count in August 2018. Tap one for its archive.
- Severe Thunderstorm Watches
- 5
- Busiest day
- August 5, 20182 severe thunderstorm watches
Over time
By day
Days in UTC, the clock the archive keeps.
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 |
|---|---|---|---|---|
| Aug 5, 1:00 AM CDT | Severe Thunderstorm Watch | SPC | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 4 hr |
| Aug 5, 4:10 AM CDT | Severe Thunderstorm Watch | SPC | Boone, Calhoun, Carroll, Cerro Gordo, Crawford, Emmet and 15 more | 3 hr |
| Aug 27, 2:57 PM CDT | Severe Thunderstorm Watch | SPC | Buena Vista, Cerro Gordo, Cherokee, Clay, Dickinson, Emmet and 14 more | 7 hr |
| Aug 28, 1:14 PM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 18 more | 8 hr |
| Aug 28, 5:06 PM CDT | Severe Thunderstorm Watch | SPC | Appanoose, Benton, Cedar, Clinton, Davis, Des Moines and 20 more | 6 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Cerro Gordo County3
- Worth County3
- Buena Vista County2
- Cherokee County2
- Clay County2
- Dickinson County2
- Ida County2
- O'Brien County2
- Osceola County2
- Plymouth County2
- Woodbury County2
- Emmet County2
- Franklin County2
- Hamilton County2
- Hancock County2
- Hardin County2
- Humboldt County2
- Kossuth County2
- Palo Alto County2
- Pocahontas County2
- Story County2
- Winnebago County2
- Wright County2
- Howard County2
- Mitchell County2
- Lyon County1
- Sioux County1
- Boone County1
- Calhoun County1
- Carroll County1
- Crawford County1
- Greene County1
- Sac County1
- Webster County1
- Allamakee County1
- Black Hawk County1
- Bremer County1
- Buchanan County1
- Butler County1
- Chickasaw County1
35 more counties
- Clayton County1
- Delaware County1
- Dubuque County1
- Fayette County1
- Floyd County1
- Grundy County1
- Marshall County1
- Tama County1
- Winneshiek County1
- Appanoose County1
- Benton County1
- Cedar County1
- Clinton County1
- Davis County1
- Des Moines County1
- Henry County1
- Iowa County1
- Jackson County1
- Jefferson County1
- Johnson County1
- Jones County1
- Keokuk County1
- Lee County1
- Linn County1
- Louisa County1
- Lucas County1
- Mahaska County1
- Monroe County1
- Muscatine County1
- Poweshiek County1
- Scott County1
- Van Buren County1
- Wapello County1
- Washington County1
- Wayne County1
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.