Heavy Snow Warnings in Iowa
12 heavy snow warnings since 1986. 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 heavy snow warnings reaches back to 2005.
Heavy Snow Warnings by county
Each county as a circle sized by its count since 1986. Tap one for its archive.
- Heavy Snow Warnings
- 12
- Busiest year
- 20075 heavy snow warnings
- Average year
- 3over 4 years on file
Over time
By year
Before late 2005 the archive holds only tornado, severe thunderstorm, flash flood and marine warnings, and from 1997 SPC's watches, so the jump that year is the archive widening, not the weather.
By month of the year
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Allamakee County3
- Howard County3
- Winneshiek County3
- Chickasaw County2
- Clayton County2
- Fayette County2
- Clay County2
- Dickinson County2
- Kossuth County2
- O'Brien County2
- Decatur County2
- Lucas County2
- Lyon County2
- Ringgold County2
- Taylor County2
- Wayne County2
- Floyd County1
- Mitchell County1
- Buena Vista County1
- Cherokee County1
- Ida County1
- Palo Alto County1
- Adair County1
- Adams 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
- Franklin County1
- Fremont County1
- Greene County1
- Grundy County1
24 more counties
- Guthrie County1
- Hamilton County1
- Hardin County1
- Harrison County1
- Madison County1
- Marshall County1
- Mills County1
- Monona County1
- Montgomery County1
- Osceola County1
- Page County1
- Plymouth County1
- Polk County1
- Pottawattamie County1
- Sac County1
- Shelby County1
- Sioux County1
- Story County1
- Tama County1
- Union County1
- Warren County1
- Webster County1
- Woodbury County1
- Worth County1
Nearby
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.