Weather alerts in Iowa, 2016
2,073 weather alerts in 2016, 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 2016. Tap one for its archive.
- Alerts
- 2,073
- Warnings
- 856
- Watches
- 169
- Advisories
- 275
- Busiest month
- July345 alerts
- Busiest day
- September 22, 201671 alerts
Over time
By month
The alerts
2,073 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.
- Pottawattamie County174
- Floyd County162
- Harrison County161
- Fremont County159
- Clay County154
- Mills County148
- Allamakee County147
- Chickasaw County146
- Page County144
- Cerro Gordo County144
- Clinton County143
- Clayton County142
- Howard County141
- Winneshiek County140
- Montgomery County140
- Mitchell County138
- Monona County137
- Fayette County136
- Scott County136
- Kossuth County135
- Shelby County134
- Linn County130
- Dickinson County128
- Sioux County127
- Hancock County127
- O'Brien County125
- Palo Alto County125
- Jackson County125
- Jones County125
- Louisa County125
- Winnebago County125
- Wright County125
- Bremer County124
- Cedar County124
- Franklin County124
- Worth County124
- Osceola County122
- Emmet County122
- Black Hawk County122
- Butler County121
59 more counties
- Buchanan County121
- Cherokee County120
- Webster County120
- Muscatine County119
- Delaware County118
- Plymouth County117
- Woodbury County116
- Benton County116
- Dubuque County116
- Johnson County113
- Pocahontas County112
- Polk County112
- Hardin County112
- Lyon County111
- Adams County111
- Hamilton County111
- Taylor County111
- Buena Vista County110
- Calhoun County110
- Boone County109
- Greene County109
- Humboldt County109
- Story County109
- Grundy County108
- Carroll County107
- Marshall County107
- Tama County107
- Des Moines County107
- Iowa County107
- Union County106
- Ida County105
- Audubon County105
- Cass County105
- Guthrie County104
- Sac County103
- Adair County102
- Dallas County102
- Clarke County100
- Crawford County99
- Jasper County99
- Warren County98
- Madison County97
- Ringgold County95
- Lucas County91
- Washington County91
- Mahaska County90
- Decatur County88
- Marion County88
- Monroe County88
- Poweshiek County88
- Wayne County87
- Appanoose County87
- Lee County85
- Jefferson County84
- Wapello County83
- Henry County83
- Van Buren County80
- Keokuk County79
- Davis County78
The busiest days
Days with the most alerts issued, by UTC date.
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. Rebuilt daily.