Weather alerts in Iowa, 2017
1,976 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in 2017. Tap one for its archive.
- Alerts
- 1,976
- Warnings
- 923
- Watches
- 158
- Advisories
- 231
- Busiest month
- June430 alerts
- Busiest day
- May 17, 2017129 alerts
Over time
By month
The alerts
1,976 alerts are too many to list on one page. Narrow it to a product above, to a month in the chart, or to a county.
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Scott County161
- Clinton County154
- Muscatine County151
- Louisa County149
- Johnson County141
- Clayton County138
- Jones County137
- Linn County133
- Fremont County132
- Des Moines County130
- Dubuque County130
- Cedar County129
- Jackson County129
- Pottawattamie County128
- Kossuth County126
- Cerro Gordo County124
- Hancock County122
- Washington County122
- Franklin County121
- Harrison County120
- Buchanan County120
- Delaware County119
- Chickasaw County118
- Mills County117
- Story County116
- Dallas County116
- Butler County115
- Webster County115
- Hardin County114
- Winnebago County114
- Worth County114
- Warren County114
- Polk County114
- Iowa County113
- Lee County113
- Marion County113
- Benton County112
- Grundy County111
- Page County111
- Black Hawk County109
59 more counties
- Adair County109
- Emmet County108
- Marshall County108
- Fayette County108
- Hamilton County106
- Wright County106
- Clay County106
- Montgomery County106
- Carroll County105
- Guthrie County105
- Palo Alto County105
- Cass County105
- Jasper County105
- Calhoun County104
- Greene County104
- Madison County104
- Humboldt County103
- Floyd County103
- Shelby County103
- Bremer County100
- Pocahontas County100
- Howard County99
- Mitchell County99
- Tama County99
- Audubon County98
- Henry County98
- Mahaska County96
- Winneshiek County95
- Boone County94
- Crawford County93
- Union County93
- Jefferson County91
- Poweshiek County91
- Plymouth County90
- Sioux County90
- Monona County90
- Lucas County90
- Keokuk County89
- Adams County89
- Wapello County89
- Sac County87
- Dickinson County87
- Osceola County87
- Lyon County85
- Monroe County85
- Ringgold County85
- Taylor County84
- Clarke County83
- Allamakee County83
- Buena Vista County81
- Appanoose County81
- Wayne County81
- O'Brien County80
- Van Buren County80
- Cherokee County79
- Davis County74
- Decatur County74
- Woodbury County73
- Ida County71
The busiest days
Days with the most alerts issued, by UTC date.
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. Rebuilt daily.