Alert archive / Iowa / Severe Thunderstorm Watches / 2016
Severe Thunderstorm Watches in Iowa, September 2016
6 severe thunderstorm watches in September 2016. 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 September 2016. Tap one for its archive.
- Severe Thunderstorm Watches
- 6
- Busiest day
- September 5, 20161 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 |
|---|---|---|---|---|
| Sep 4, 10:40 PM CDT | Severe Thunderstorm Watch | SPC | Lyon, Plymouth, Sioux | 4 hr |
| Sep 6, 5:18 PM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Chickasaw, Floyd, Howard, Mitchell, Winneshiek | 4 hr |
| Sep 6, 7:00 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Audubon, Black Hawk, Boone, Bremer and 30 more | 7 hr |
| Sep 15, 4:38 PM CDT | Severe Thunderstorm Watch | SPC | Crawford, Harrison, Ida, Monona, Pottawattamie, Sac and 2 more | 5 hr |
| Sep 19, 2:31 PM CDT | Severe Thunderstorm Watch | SPC | Clayton | 3 hr |
| Sep 20, 9:34 PM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Cerro Gordo, Chickasaw, Clayton, Fayette, Floyd and 6 more | 5 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Allamakee County2
- Chickasaw County2
- Floyd County2
- Howard County2
- Mitchell County2
- Winneshiek County2
- Cerro Gordo County2
- Crawford County2
- Hancock County2
- Harrison County2
- Monona County2
- Pottawattamie County2
- Shelby County2
- Worth County2
- Clayton County2
- Lyon County1
- Plymouth County1
- Sioux County1
- Adair County1
- Adams County1
- Audubon County1
- Black Hawk County1
- Boone County1
- Bremer County1
- Butler County1
- Calhoun County1
- Carroll County1
- Cass County1
- Dallas County1
- Franklin County1
- Fremont County1
- Greene County1
- Grundy County1
- Guthrie County1
- Hamilton County1
- Hardin County1
- Humboldt County1
- Madison County1
- Marshall County1
- Mills County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20152017
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.