Alert archive / Iowa / 2021
Weather alerts in Iowa, October 2021
52 weather alerts in October 2021, 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 October 2021. Tap one for its archive.
- Alerts
- 52
- Warnings
- 9
- Watches
- 2
- Advisories
- 20
- Busiest day
- October 11, 20219 alerts
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 |
|---|---|---|---|---|
| Oct 4, 8:27 AM CDT | Dense Fog Advisory | ARX | Mitchell | 118 min |
| Oct 4, 2:37 PM CDT | Dense Fog Advisory | DMX | Cerro Gordo, Hancock, Kossuth, Winnebago, Worth | 18 hr |
| Oct 4, 2:38 PM CDT | Dense Fog Advisory | ARX | Floyd, Mitchell | 18 hr |
| Oct 7, 6:11 PM CDT | Special Weather Statement | DVN | Benton, Linn | 49 min |
| Oct 8, 3:52 AM CDT | Dense Fog Advisory | DVN | Dubuque, Jackson | 5 hr |
| Oct 8, 9:34 PM CDT | Dense Fog Advisory | ARX | Allamakee, Clayton, Howard, Winneshiek | 12 hr |
| Oct 8, 9:43 PM CDT | Dense Fog Advisory | DVN | Cedar, Clinton, Delaware, Dubuque, Jackson, Jones and 2 more | 10 hr |
| Oct 10, 6:07 AM CDT | Special Weather Statement | DVN | Jackson | 38 min |
| Oct 10, 8:32 PM CDT | Special Weather Statement | DVN | Keokuk | 43 min |
| Oct 10, 8:51 PM CDT | Special Weather Statement | DVN | Washington | 39 min |
| Oct 10, 9:34 PM CDT | Special Weather Statement | DVN | Johnson | 26 min |
| Oct 10, 10:57 PM CDT | Special Weather Statement | DVN | Jackson | 33 min |
| Oct 10, 11:24 PM CDT | Special Weather Statement | DVN | Johnson | 36 min |
| Oct 11, 12:55 PM CDT | Special Weather Statement | DVN | Lee | 50 min |
| Oct 11, 1:37 PM CDT | Special Weather Statement | DVN | Des Moines | 38 min |
| Oct 11, 4:55 PM CDT | Special Weather Statement | DVN | Muscatine | 35 min |
| Oct 11, 5:41 PM CDT | Special Weather Statement | DVN | Johnson | 19 min |
| Oct 13, 2:53 AM CDT | Wind Advisory | FSD | Buena Vista, Cherokee, Clay, Dickinson, Lyon, O'Brien and 3 more | 20 hr |
| Oct 13, 3:00 AM CDT | Wind Advisory | DMX | Cerro Gordo, Emmet, Franklin, Hancock, Humboldt, Kossuth and 5 more | 10 hr |
| Oct 13, 5:52 AM CDT | Special Weather Statement | DVN | Van Buren | 38 min |
| Oct 13, 6:43 AM CDT | Special Weather Statement | DVN | Van Buren | 47 min |
| Oct 13, 7:08 AM CDT | Special Weather Statement | DVN | Henry | 37 min |
| Oct 13, 7:51 AM CDT | Special Weather Statement | DVN | Henry, Jefferson, Johnson, Louisa, Muscatine, Washington | 39 min |
| Oct 13, 9:13 AM CDT | Special Weather Statement | DVN | Clinton, Jackson, Scott | 47 min |
| Oct 15, 3:13 AM CDT | Frost Advisory | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 30 hr |
| Oct 15, 3:13 AM CDT | Freeze Warning | OAX | Monona | 30 hr |
| Oct 15, 3:30 AM CDT | Frost Advisory | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 30 hr |
| Oct 15, 1:08 PM CDT | Frost Advisory | DMX | Adair, Adams, Audubon, Boone, Calhoun, Carroll and 19 more | 20 hr |
| Oct 15, 3:00 PM CDT | Freeze Warning | FSD | Lyon, O'Brien, Osceola, Sioux | 19 hr |
| Oct 20, 7:39 AM CDT | Mesoscale Discussion | SPC | Buena Vista, Calhoun, Cherokee, Clay, Dickinson, Emmet and 11 more | 96 min |
| Oct 20, 12:35 PM CDT | Special Weather Statement | ARX | Howard | 25 min |
| Oct 20, 2:45 PM CDT | Special Weather Statement | DVN | Cedar, Jones, Muscatine, Scott | 45 min |
| Oct 20, 3:17 PM CDT | Special Weather Statement | DVN | Clinton, Jackson | 28 min |
| Oct 21, 2:49 AM CDT | Frost Advisory | DMX | Adams, Dallas, Jasper, Madison, Mahaska, Marion and 7 more | 30 hr |
| Oct 21, 2:49 AM CDT | Freeze Warning | DMX | Adair, Audubon, Black Hawk, Boone, Bremer, Butler and 24 more | 30 hr |
| Oct 21, 3:07 AM CDT | Frost Advisory | ARX | Allamakee, Clayton | 30 hr |
| Oct 21, 3:07 AM CDT | Freeze Warning | ARX | Chickasaw, Fayette, Floyd, Howard, Mitchell, Winneshiek | 30 hr |
| Oct 21, 3:12 AM CDT | Frost Advisory | OAX | Fremont, Mills, Montgomery, Page, Pottawattamie | 31 hr |
| Oct 21, 3:12 AM CDT | Freeze Warning | OAX | Harrison, Monona, Shelby | 31 hr |
| Oct 21, 3:24 AM CDT | Frost Advisory | DVN | Benton, Buchanan, Delaware, Dubuque, Iowa, Jones and 1 more | 30 hr |
| Oct 22, 1:56 PM CDT | Freeze Warning | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 19 hr |
| Oct 22, 2:22 PM CDT | Frost Advisory | DVN | Cedar, Clinton, Iowa, Johnson, Keokuk, Louisa and 3 more | 19 hr |
| Oct 22, 2:22 PM CDT | Freeze Warning | DVN | Benton, Buchanan, Delaware, Dubuque, Jackson, Jones and 1 more | 19 hr |
| Oct 22, 2:39 PM CDT | Frost Advisory | DMX | Adair, Audubon, Cass, Dallas, Guthrie, Jasper and 6 more | 18 hr |
| Oct 22, 2:39 PM CDT | Freeze Warning | DMX | Black Hawk, Boone, Bremer, Butler, Calhoun, Carroll and 21 more | 18 hr |
| Oct 23, 12:53 PM CDT | Flash Flood Watch | DVN | Des Moines, Henry, Jefferson, Lee, Louisa, Muscatine and 3 more | 38 hr |
| Oct 23, 9:14 PM CDT | Mesoscale Discussion | SPC | Appanoose, Davis, Decatur, Fremont, Lee, Page and 4 more | 3 hr |
| Oct 23, 9:53 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Appanoose, Clarke, Davis, Decatur, Fremont and 7 more | 7 hr |
| Oct 24, 12:33 PM CDT | Areal Flood Advisory | OAX | Pottawattamie | 4 hr |
| Oct 24, 2:30 PM CDT | Areal Flood Advisory | OAX | Fremont, Page | 3 hr |
| Oct 26, 3:10 AM CDT | Wind Advisory | FSD | Lyon, Osceola | 16 hr |
| Oct 31, 2:22 PM CDT | Freeze Warning | DVN | Des Moines, Henry, Jefferson, Keokuk, Louisa, Muscatine and 2 more | 19 hr |
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 Watch | 1 |
| Mesoscale Discussion | 2 |
| Special Weather Statement | 19 |
| Flooding | |
| Flash Flood Watch | 1 |
| Areal Flood Advisory | 2 |
| Cold | |
| Freeze Warning | 9 |
| Frost Advisory | 9 |
| Wind and dust | |
| Wind Advisory | 3 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Jackson County7
- Muscatine County7
- Kossuth County6
- Scott County6
- Cerro Gordo County5
- Hancock County5
- Winnebago County5
- Worth County5
- Washington County5
- Johnson County5
- Lyon County5
- Osceola County5
- Emmet County5
- Humboldt County5
- Palo Alto County5
- Pocahontas County5
- Fremont County5
- Page County5
- Mitchell County4
- Dubuque County4
- Howard County4
- Clinton County4
- Jones County4
- O'Brien County4
- Sioux County4
- Wright County4
- Van Buren County4
- Henry County4
- Louisa County4
- Calhoun County4
- Sac County4
- Taylor County4
- Floyd County3
- Benton County3
- Linn County3
- Allamakee County3
- Clayton County3
- Winneshiek County3
- Cedar County3
- Delaware County3
56 more counties
- Keokuk County3
- Lee County3
- Des Moines County3
- Buena Vista County3
- Cherokee County3
- Clay County3
- Dickinson County3
- Plymouth County3
- Franklin County3
- Jefferson County3
- Mills County3
- Monona County3
- Montgomery County3
- Pottawattamie County3
- Adair County3
- Adams County3
- Audubon County3
- Boone County3
- Carroll County3
- Cass County3
- Crawford County3
- Dallas County3
- Greene County3
- Guthrie County3
- Hamilton County3
- Webster County3
- Ringgold County3
- Harrison County2
- Shelby County2
- Ida County2
- Jasper County2
- Madison County2
- Mahaska County2
- Marion County2
- Polk County2
- Poweshiek County2
- Tama County2
- Union County2
- Warren County2
- Black Hawk County2
- Bremer County2
- Butler County2
- Grundy County2
- Hardin County2
- Marshall County2
- Story County2
- Chickasaw County2
- Fayette County2
- Buchanan County2
- Iowa County2
- Appanoose County2
- Davis County2
- Decatur County2
- Wayne County2
- Woodbury County1
- Clarke County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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.