Alert archive / Iowa / Winter Storm Warnings / 2009
Winter Storm Warnings in Iowa, December 2009
9 winter storm warnings in December 2009. 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 winter storm warnings reaches back to 2005.
Winter Storm Warnings by county
Each county as a circle sized by its count in December 2009. Tap one for its archive.
- Winter Storm Warnings
- 9
- Busiest day
- December 7, 20095 winter storm warnings
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 |
|---|---|---|---|---|
| Dec 7, 4:04 AM CST | Winter Storm Warning | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 41 hr |
| Dec 7, 2:59 PM CST | Winter Storm Warning | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 23 hr |
| Dec 7, 3:42 PM CST | Winter Storm Warning | DMX | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more | 29 hr |
| Dec 7, 3:45 PM CST | Winter Storm Warning | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more | 50 hr |
| Dec 7, 3:50 PM CST | Winter Storm Warning | ARX | Allamakee, Clayton | 22 hr |
| Dec 22, 4:30 AM CST | Winter Storm Warning | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 4 days |
| Dec 22, 3:47 PM CST | Winter Storm Warning | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 56 hr |
| Dec 23, 3:58 AM CST | Winter Storm Warning | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 48 hr |
| Dec 23, 5:07 AM CST | Winter Storm Warning | DMX | Adair, Adams, Audubon, Black Hawk, Boone, Bremer and 36 more | 71 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Fremont County2
- Harrison County2
- Mills County2
- Monona County2
- Montgomery County2
- Page County2
- Pottawattamie County2
- Shelby County2
- Buena Vista County2
- Cherokee County2
- Clay County2
- Dickinson County2
- Ida County2
- Lyon County2
- O'Brien County2
- Osceola County2
- Plymouth County2
- Sioux County2
- Woodbury County2
- Adair County2
- Adams County2
- Audubon County2
- Black Hawk County2
- Boone County2
- Bremer County2
- Butler County2
- Calhoun County2
- Carroll County2
- Cass County2
- Cerro Gordo County2
- Clarke County2
- Crawford County2
- Dallas County2
- Decatur County2
- Emmet County2
- Franklin County2
- Greene County2
- Grundy County2
- Guthrie County2
- Hamilton County2
59 more counties
- Hancock County2
- Hardin County2
- Humboldt County2
- Jasper County2
- Kossuth County2
- Madison County2
- Marshall County2
- Palo Alto County2
- Pocahontas County2
- Polk County2
- Ringgold County2
- Sac County2
- Story County2
- Tama County2
- Taylor County2
- Union County2
- Warren County2
- Webster County2
- Winnebago County2
- Worth County2
- Wright County2
- Allamakee County2
- Clayton County2
- Appanoose County1
- Davis County1
- Lucas County1
- Mahaska County1
- Marion County1
- Monroe County1
- Poweshiek County1
- Wapello County1
- Wayne County1
- Benton County1
- Buchanan County1
- Cedar County1
- Clinton County1
- Delaware County1
- Des Moines County1
- Dubuque County1
- Henry County1
- Iowa County1
- Jackson County1
- Jefferson County1
- Johnson County1
- Jones County1
- Keokuk County1
- Lee County1
- Linn County1
- Louisa County1
- Muscatine County1
- Scott County1
- Van Buren County1
- Washington County1
- Chickasaw County1
- Fayette County1
- Floyd County1
- Howard County1
- Mitchell County1
- Winneshiek County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20082010
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.