Alert archive / Iowa / 2023
Weather alerts in Iowa, September 2023
105 weather alerts in September 2023, 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 September 2023. Tap one for its archive.
- Alerts
- 105
- Warnings
- 18
- Watches
- 1
- Advisories
- 21
- Busiest day
- September 16, 202324 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 |
|---|---|---|---|---|
| Sep 1, 2:09 PM CDT | Heat Advisory | FSD | Lyon, Plymouth, Sioux, Woodbury | 53 hr |
| Sep 2, 11:50 AM CDT | Heat Advisory | ARX | Allamakee | 3 days |
| Sep 5, 8:09 PM CDT | Mesoscale Discussion | SPC | Howard | 96 min |
| Sep 5, 10:49 PM CDT | Special Weather Statement | DVN | Buchanan | 41 min |
| Sep 5, 11:31 PM CDT | Special Weather Statement | DVN | Delaware, Dubuque | 44 min |
| Sep 6, 12:11 AM CDT | Special Weather Statement | DVN | Dubuque | 49 min |
| Sep 12, 2:05 AM CDT | Dense Fog Advisory | DVN | Des Moines, Henry, Jefferson, Keokuk, Lee, Louisa and 2 more | 6 hr |
| Sep 12, 2:13 AM CDT | Dense Fog Advisory | DMX | Appanoose, Davis, Lucas, Mahaska, Marion, Monroe and 2 more | 7 hr |
| Sep 12, 2:49 PM CDT | Special Weather Statement | DVN | Dubuque | 26 min |
| Sep 12, 3:57 PM CDT | Special Weather Statement | DVN | Clinton | 48 min |
| Sep 12, 3:58 PM CDT | Special Weather Statement | DVN | Clinton | 47 min |
| Sep 12, 4:37 PM CDT | Special Weather Statement | DVN | Scott | 23 min |
| Sep 12, 6:54 PM CDT | Special Weather Statement | DVN | Jackson | 36 min |
| Sep 15, 6:03 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, Sioux | 42 min |
| Sep 15, 6:23 PM CDT | Severe Thunderstorm Warning | FSD | O'Brien, Sioux | 37 min |
| Sep 15, 9:36 PM CDT | Dense Fog Advisory | ARX | Allamakee, Chickasaw, Fayette, Floyd, Howard, Mitchell and 1 more | 11 hr |
| Sep 16, 2:28 AM CDT | Dense Fog Advisory | DMX | Adams, Black Hawk, Boone, Bremer, Butler, Cass and 11 more | 7 hr |
| Sep 16, 5:13 AM CDT | Dense Fog Advisory | DVN | Benton, Buchanan | 4 hr |
| Sep 16, 5:20 AM CDT | Dense Fog Advisory | OAX | Fremont, Mills, Montgomery, Page, Pottawattamie | 6 hr |
| Sep 16, 12:41 PM CDT | Special Weather Statement | DMX | Clarke | 34 min |
| Sep 16, 1:28 PM CDT | Special Weather Statement | DMX | Lucas | 32 min |
| Sep 16, 1:40 PM CDT | Special Weather Statement | DMX | Monroe | 35 min |
| Sep 16, 1:58 PM CDT | Special Weather Statement | DMX | Mahaska | 32 min |
| Sep 16, 2:12 PM CDT | Special Weather Statement | DMX | Davis | 33 min |
| Sep 16, 2:33 PM CDT | Special Weather Statement | DVN | Keokuk | 42 min |
| Sep 16, 2:54 PM CDT | Special Weather Statement | DVN | Van Buren | 51 min |
| Sep 16, 3:10 PM CDT | Special Weather Statement | DVN | Jefferson | 50 min |
| Sep 16, 3:34 PM CDT | Special Weather Statement | DVN | Washington | 41 min |
| Sep 16, 3:39 PM CDT | Special Weather Statement | DVN | Lee, Van Buren | 51 min |
| Sep 16, 3:47 PM CDT | Special Weather Statement | DVN | Clinton | 43 min |
| Sep 16, 4:01 PM CDT | Special Weather Statement | DVN | Clinton | 44 min |
| Sep 16, 4:13 PM CDT | Special Weather Statement | ARX | Clayton | 32 min |
| Sep 16, 4:19 PM CDT | Special Weather Statement | DVN | Linn | 41 min |
| Sep 16, 4:25 PM CDT | Special Weather Statement | DVN | Des Moines | 50 min |
| Sep 16, 4:27 PM CDT | Special Weather Statement | DMX | Union | 33 min |
| Sep 16, 5:00 PM CDT | Special Weather Statement | DVN | Dubuque | 60 min |
| Sep 16, 5:35 PM CDT | Special Weather Statement | DVN | Dubuque | 40 min |
| Sep 16, 6:00 PM CDT | Special Weather Statement | DMX | Ringgold | 15 min |
| Sep 16, 6:23 PM CDT | Special Weather Statement | DVN | Jackson | 52 min |
| Sep 19, 1:19 AM CDT | Severe Thunderstorm Warning | FSD | Ida, Woodbury | 26 min |
| Sep 19, 4:58 AM CDT | Special Weather Statement | DMX | Greene | 47 min |
| Sep 19, 5:42 AM CDT | Special Weather Statement | DMX | Audubon | 48 min |
| Sep 19, 7:07 AM CDT | Special Weather Statement | DMX | Dallas, Guthrie | 38 min |
| Sep 19, 10:13 AM CDT | Special Weather Statement | DMX | Story | 47 min |
| Sep 19, 12:09 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Shelby | 32 min |
| Sep 19, 1:00 PM CDT | Special Weather Statement | DMX | Polk | 30 min |
| Sep 19, 2:21 PM CDT | Special Weather Statement | OAX | Shelby | 24 min |
| Sep 19, 2:26 PM CDT | Severe Thunderstorm Warning | OAX | Shelby | 49 min |
| Sep 19, 2:49 PM CDT | Areal Flood Advisory | OAX | Shelby | 2 hr |
| Sep 19, 3:26 PM CDT | Severe Thunderstorm Warning | DMX | Greene, Guthrie | 21 min |
| Sep 19, 3:40 PM CDT | Special Weather Statement | DMX | Cass | 35 min |
| Sep 19, 5:14 PM CDT | Special Weather Statement | DMX | Adair, Union | 31 min |
| Sep 19, 9:46 PM CDT | Special Weather Statement | DMX | Audubon | 59 min |
| Sep 19, 10:20 PM CDT | Flash Flood Warning | DMX | Audubon | 4 hr |
| Sep 20, 2:00 AM CDT | Severe Thunderstorm Warning | OAX | Mills | 30 min |
| Sep 20, 3:28 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills | 32 min |
| Sep 20, 3:57 AM CDT | Severe Thunderstorm Warning | OAX | Fremont | 11 min |
| Sep 21, 5:24 AM CDT | Dense Fog Advisory | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 4 hr |
| Sep 22, 3:56 PM CDT | Mesoscale Discussion | SPC | Benton, Black Hawk, Buchanan, Cedar, Clayton, Delaware and 11 more | 2 hr |
| Sep 22, 5:44 PM CDT | Tornado Warning | DVN | Benton, Linn | 46 min |
| Sep 22, 6:30 PM CDT | Tornado Warning | DVN | Benton, Linn | 45 min |
| Sep 22, 8:02 PM CDT | Special Weather Statement | DMX | Black Hawk | 28 min |
| Sep 22, 8:07 PM CDT | Special Weather Statement | DVN | Delaware | 38 min |
| Sep 22, 8:14 PM CDT | Flash Flood Warning | DVN | Buchanan, Delaware, Linn | 3 hr |
| Sep 22, 9:19 PM CDT | Special Weather Statement | DVN | Buchanan | 86 min |
| Sep 23, 5:46 AM CDT | Special Weather Statement | DMX | Winnebago | 29 min |
| Sep 23, 9:37 AM CDT | Mesoscale Discussion | SPC | Cherokee, Crawford, Harrison, Ida, Monona, Plymouth and 4 more | 113 min |
| Sep 23, 10:24 AM CDT | Severe Thunderstorm Warning | OAX | Harrison | 28 min |
| Sep 23, 11:17 AM CDT | Severe Thunderstorm Warning | OAX | Monona | 11 min |
| Sep 23, 12:23 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Carroll, Crawford, Greene, Pocahontas, Sac and 1 more | 67 min |
| Sep 23, 12:59 PM CDT | Special Weather Statement | DMX | Clarke, Lucas, Warren | 46 min |
| Sep 23, 1:09 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Calhoun, Carroll, Greene, Hamilton, Hancock and 4 more | 66 min |
| Sep 23, 1:09 PM CDT | Mesoscale Discussion | SPC | Adair, Audubon, Boone, Buena Vista, Butler, Calhoun and 28 more | 96 min |
| Sep 23, 1:34 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Audubon, Black Hawk, Boone, Bremer, Butler and 34 more | 8 hr |
| Sep 23, 2:10 PM CDT | Mesoscale Discussion | SPC | Lyon, Osceola, Sioux | 3 hr |
| Sep 23, 2:15 PM CDT | Special Weather Statement | DMX | Cerro Gordo, Franklin, Hamilton, Hancock, Hardin, Worth and 1 more | 60 min |
| Sep 23, 3:18 PM CDT | Special Weather Statement | ARX | Mitchell | 42 min |
| Sep 23, 3:39 PM CDT | Mesoscale Discussion | SPC | Black Hawk, Boone, Bremer, Butler, Cerro Gordo, Chickasaw and 20 more | 96 min |
| Sep 23, 4:58 PM CDT | Mesoscale Discussion | SPC | Adams, Audubon, Cass, Fremont, Harrison, Mills and 5 more | 2 hr |
| Sep 23, 6:23 PM CDT | Mesoscale Discussion | SPC | Audubon, Boone, Buena Vista, Butler, Calhoun, Carroll and 30 more | 2 hr |
| Sep 24, 6:13 PM CDT | Special Weather Statement | DVN | Dubuque | 47 min |
| Sep 24, 6:55 PM CDT | Special Weather Statement | DVN | Scott | 50 min |
| Sep 24, 7:40 PM CDT | Special Weather Statement | DVN | Clinton, Scott | 50 min |
| Sep 25, 9:07 AM CDT | Dense Fog Advisory | DVN | Cedar, Clinton, Jackson, Jones, Muscatine, Scott | 2 hr |
| Sep 26, 2:55 AM CDT | Dense Fog Advisory | ARX | Floyd, Mitchell | 6 hr |
| Sep 26, 2:55 AM CDT | Dense Fog Advisory | DMX | Cerro Gordo, Hancock, Winnebago, Worth | 6 hr |
| Sep 26, 1:20 PM CDT | Mesoscale Discussion | SPC | Cedar, Clinton, Jackson, Jones, Muscatine, Scott | 85 min |
| Sep 26, 1:22 PM CDT | Special Weather Statement | DVN | Jones | 38 min |
| Sep 26, 2:10 PM CDT | Special Weather Statement | DVN | Jones | 50 min |
| Sep 26, 2:41 PM CDT | Special Weather Statement | DVN | Cedar | 49 min |
| Sep 26, 3:31 PM CDT | Special Weather Statement | DVN | Scott | 44 min |
| Sep 26, 3:42 PM CDT | Special Weather Statement | DVN | Dubuque | 48 min |
| Sep 26, 3:52 PM CDT | Special Weather Statement | DVN | Scott | 53 min |
| Sep 26, 3:59 PM CDT | Special Weather Statement | DVN | Johnson | 46 min |
| Sep 26, 9:04 PM CDT | Special Weather Statement | DVN | Jackson | 41 min |
| Sep 27, 4:19 AM CDT | Dense Fog Advisory | FSD | Buena Vista, Cherokee, Ida, O'Brien, Plymouth, Sioux and 1 more | 7 hr |
| Sep 27, 4:29 AM CDT | Dense Fog Advisory | DMX | Audubon, Boone, Calhoun, Carroll, Crawford, Dallas and 11 more | 6 hr |
| Sep 27, 4:41 AM CDT | Dense Fog Advisory | DVN | Iowa, Jefferson, Johnson, Keokuk, Washington | 5 hr |
| Sep 27, 6:05 AM CDT | Dense Fog Advisory | OAX | Harrison, Monona, Shelby | 5 hr |
| Sep 28, 3:59 AM CDT | Dense Fog Advisory | DVN | Des Moines, Henry, Jefferson, Keokuk, Lee, Louisa and 2 more | 6 hr |
| Sep 28, 4:20 AM CDT | Dense Fog Advisory | FSD | Buena Vista, Cherokee, Clay, Dickinson, Lyon, O'Brien and 1 more | 6 hr |
| Sep 28, 6:09 AM CDT | Dense Fog Advisory | DMX | Boone, Calhoun, Carroll, Dallas, Davis, Emmet and 14 more | 4 hr |
| Sep 28, 10:02 AM CDT | Dense Fog Advisory | DMX | Davis, Mahaska, Marion, Monroe, Wapello | 58 min |
| Sep 29, 5:14 PM CDT | Mesoscale Discussion | SPC | Lyon, Osceola, Sioux | 2 hr |
| Sep 29, 6:20 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Sioux | 25 min |
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 | 14 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 10 |
| Special Weather Statement | 55 |
| Flooding | |
| Flash Flood Warning | 2 |
| Areal Flood Advisory | 1 |
| Heat | |
| Heat Advisory | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 18 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Greene County9
- Dubuque County8
- Boone County8
- Dallas County8
- Hamilton County8
- Polk County8
- Story County8
- Audubon County8
- Sioux County7
- Marion County7
- Clinton County7
- Scott County7
- Floyd County7
- Jasper County7
- Shelby County7
- Calhoun County7
- Carroll County7
- Mahaska County6
- Mitchell County6
- Hardin County6
- Poweshiek County6
- Guthrie County6
- Winnebago County6
- Sac County6
- Pocahontas County6
- Webster County6
- Hancock County6
- Cerro Gordo County6
- Worth County6
- Lyon County5
- Buchanan County5
- Keokuk County5
- Washington County5
- Jackson County5
- Black Hawk County5
- Butler County5
- Grundy County5
- Marshall County5
- Tama County5
- Linn County5
58 more counties
- Harrison County5
- Jones County5
- Warren County5
- Humboldt County5
- Wright County5
- Franklin County5
- Plymouth County4
- Woodbury County4
- Howard County4
- Delaware County4
- Jefferson County4
- Van Buren County4
- Davis County4
- Lucas County4
- Monroe County4
- Wapello County4
- Chickasaw County4
- Cass County4
- Benton County4
- Fremont County4
- Mills County4
- Cedar County4
- Crawford County4
- Buena Vista County4
- Palo Alto County4
- Allamakee County3
- Des Moines County3
- Lee County3
- O'Brien County3
- Fayette County3
- Winneshiek County3
- Bremer County3
- Pottawattamie County3
- Clarke County3
- Clayton County3
- Ida County3
- Adair County3
- Johnson County3
- Muscatine County3
- Cherokee County3
- Monona County3
- Kossuth County3
- Madison County3
- Emmet County3
- Osceola County3
- Henry County2
- Louisa County2
- Adams County2
- Taylor County2
- Montgomery County2
- Page County2
- Union County2
- Iowa County2
- Clay County2
- Dickinson County2
- Appanoose County1
- Wayne County1
- Ringgold County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20222024
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.