Weather alerts in Iowa, 2020
1,706 weather alerts in 2020, 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 2020. Tap one for its archive.
- Alerts
- 1,706
- Warnings
- 691
- Watches
- 129
- Advisories
- 319
- Busiest month
- June446 alerts
- Busiest day
- June 5, 202076 alerts
Over time
By month
The alerts
1,706 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.
- Linn County147
- Cedar County145
- Scott County144
- Jones County140
- Muscatine County138
- Clinton County135
- Buchanan County134
- Benton County132
- Fremont County130
- Louisa County130
- Delaware County129
- Johnson County129
- Mills County127
- Dubuque County126
- Lee County125
- Jackson County125
- Osceola County124
- Clay County122
- Dickinson County122
- Iowa County122
- Des Moines County122
- Black Hawk County121
- Washington County121
- Pottawattamie County119
- Fayette County117
- Page County115
- Keokuk County115
- Montgomery County113
- Lyon County110
- O'Brien County110
- Plymouth County110
- Marion County110
- Cerro Gordo County108
- Jasper County108
- Clayton County108
- Warren County108
- Kossuth County107
- Polk County107
- Mahaska County106
- Hancock County105
59 more counties
- Clarke County105
- Tama County104
- Winnebago County104
- Chickasaw County104
- Sioux County104
- Van Buren County104
- Howard County103
- Madison County103
- Mitchell County102
- Worth County102
- Winneshiek County102
- Henry County102
- Jefferson County102
- Monroe County102
- Emmet County101
- Franklin County101
- Hardin County101
- Lucas County101
- Grundy County100
- Marshall County100
- Union County100
- Poweshiek County98
- Story County98
- Wright County98
- Hamilton County97
- Humboldt County97
- Allamakee County97
- Boone County96
- Decatur County96
- Webster County95
- Floyd County95
- Adair County95
- Dallas County95
- Bremer County94
- Wapello County94
- Butler County93
- Ringgold County93
- Adams County92
- Buena Vista County91
- Woodbury County90
- Taylor County90
- Palo Alto County89
- Harrison County89
- Wayne County89
- Monona County88
- Guthrie County87
- Cherokee County86
- Pocahontas County85
- Shelby County84
- Davis County84
- Cass County83
- Appanoose County81
- Calhoun County80
- Greene County80
- Ida County79
- Crawford County77
- Carroll County76
- Sac County70
- Audubon County70
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20192021
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.