Alert archive / Iowa / Severe Thunderstorm Watches / 2017
Severe Thunderstorm Watches in Iowa, August 2017
4 severe thunderstorm watches in August 2017. 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 2017. Tap one for its archive.
- Severe Thunderstorm Watches
- 4
- Busiest day
- August 10, 20171 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 10, 2:47 PM CDT | Severe Thunderstorm Watch | SPC | Cedar, Clinton, Jackson, Muscatine, Scott | 6 hr |
| Aug 13, 4:00 PM CDT | Severe Thunderstorm Watch | SPC | Lyon | 11 hr |
| Aug 18, 4:51 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Audubon, Boone, Buena Vista, Butler, Calhoun and 37 more | 8 hr |
| Aug 21, 11:33 AM CDT | Severe Thunderstorm Watch | SPC | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 6 more | 7 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Lyon County2
- Buena Vista County2
- Cherokee County2
- Clay County2
- Dickinson County2
- Ida County2
- O'Brien County2
- Osceola County2
- Cedar County1
- Clinton County1
- Jackson County1
- Muscatine County1
- Scott County1
- Adair County1
- Audubon County1
- Boone County1
- Butler County1
- Calhoun County1
- Carroll County1
- Cerro Gordo County1
- Crawford County1
- Dallas County1
- Emmet County1
- Franklin County1
- Greene County1
- Grundy County1
- Guthrie County1
- Hamilton County1
- Hancock County1
- Hardin County1
- Humboldt County1
- Jasper County1
- Kossuth County1
- Madison County1
- Mahaska County1
- Marion County1
- Marshall County1
- Palo Alto County1
- Pocahontas County1
- Polk County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20162018
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.