Weather alerts in Iowa, 2004
1,535 weather alerts in 2004, 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 2004. Tap one for its archive.
- Alerts
- 1,535
- Warnings
- 1,189
- Watches
- 102
- Advisories
- 0
- Busiest month
- May651 alerts
- Busiest day
- May 21, 2004106 alerts
Over time
By month
The alerts
1,535 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.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 866 |
| Tornado Warning | 205 |
| Severe Thunderstorm Watch | 63 |
| Tornado Watch | 39 |
| Mesoscale Discussion | 244 |
| Flooding | |
| Flash Flood Warning | 118 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Dallas County117
- Polk County117
- Guthrie County115
- Madison County112
- Cherokee County111
- Jasper County110
- Webster County110
- Boone County109
- Story County108
- Hamilton County107
- Plymouth County107
- O'Brien County107
- Audubon County106
- Calhoun County106
- Clay County106
- Marshall County105
- Buena Vista County105
- Wright County103
- Greene County102
- Ida County101
- Warren County101
- Palo Alto County101
- Hardin County100
- Jones County99
- Fremont County99
- Sac County99
- Franklin County99
- Adair County98
- Montgomery County98
- Cerro Gordo County98
- Kossuth County98
- Pocahontas County98
- Harrison County97
- Mills County97
- Emmet County97
- Worth County97
- Pottawattamie County96
- Shelby County96
- Taylor County96
- Benton County96
59 more counties
- Linn County95
- Cass County95
- Humboldt County95
- Woodbury County95
- Dickinson County95
- Delaware County93
- Carroll County92
- Page County92
- Tama County92
- Hancock County92
- Sioux County92
- Floyd County91
- Union County91
- Scott County91
- Cedar County91
- Decatur County91
- Lucas County91
- Marion County91
- Adams County90
- Ringgold County90
- Winnebago County90
- Dubuque County89
- Clarke County89
- Monroe County89
- Wayne County89
- Grundy County88
- Crawford County88
- Poweshiek County88
- Osceola County88
- Lyon County88
- Buchanan County87
- Jackson County87
- Appanoose County87
- Johnson County87
- Clinton County86
- Muscatine County86
- Iowa County85
- Butler County84
- Mahaska County84
- Monona County83
- Keokuk County81
- Louisa County81
- Clayton County80
- Davis County80
- Jefferson County80
- Howard County79
- Allamakee County79
- Mitchell County79
- Van Buren County79
- Black Hawk County78
- Chickasaw County78
- Fayette County78
- Winneshiek County78
- Washington County78
- Bremer County77
- Des Moines County77
- Henry County75
- Wapello County74
- Lee County65
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20032005
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.