Alert archive / Iowa / 2026
Weather alerts in Iowa, September 2026
187 weather alerts in September 2026, 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 2026. Tap one for its archive.
- Alerts
- 187
- Warnings
- 101
- Watches
- 36
- Advisories
- 14
- Busiest day
- September 20, 202632 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, 1:42 AM CDT | Dense Fog Advisory | DVN | Benton, Buchanan, Delaware, Dubuque, Jones, Linn | 7 hr |
| Sep 1, 3:57 AM CDT | Dense Fog Advisory | DMX | Black Hawk, Bremer, Butler, Grundy, Marshall, Tama | 4 hr |
| Sep 1, 11:04 AM CDT | Heat Advisory | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 4 days |
| Sep 1, 3:50 PM CDT | Severe Thunderstorm Watch | SPC | Cherokee, Ida, Lyon, Plymouth, Sioux, Woodbury | 9 hr |
| Sep 1, 9:11 PM CDT | Mesoscale Discussion | SPC | Buena Vista, Cherokee, Clay, Dickinson, Emmet, Hancock and 12 more | 2 hr |
| Sep 1, 9:24 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, Plymouth, Sioux | 51 min |
| Sep 1, 9:50 PM CDT | Severe Thunderstorm Watch | SPC | Buena Vista, Cerro Gordo, Cherokee, Clay, Dickinson, Emmet and 14 more | 7 hr |
| Sep 1, 10:02 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, O'Brien, Osceola, Plymouth, Sioux | 43 min |
| Sep 1, 10:04 PM CDT | Tornado Warning | FSD | Lyon, O'Brien, Osceola, Sioux | 26 min |
| Sep 1, 10:34 PM CDT | Severe Thunderstorm Warning | FSD | Dickinson, Lyon, O'Brien, Osceola, Sioux | 71 min |
| Sep 1, 11:56 PM CDT | Mesoscale Discussion | SPC | Emmet, Winnebago, Worth | 2 hr |
| Sep 2, 2:02 AM CDT | Extreme Heat Warning | DVN | Cedar, Des Moines, Henry, Iowa, Jefferson, Johnson and 7 more | 4 days |
| Sep 3, 2:34 AM CDT | Mesoscale Discussion | SPC | Buena Vista, Cerro Gordo, Cherokee, Clay, Dickinson, Emmet and 12 more | 116 min |
| Sep 4, 2:49 AM CDT | Heat Advisory | ARX | Clayton, Fayette | 16 hr |
| Sep 4, 7:42 AM CDT | Heat Advisory | FSD | Buena Vista, Cherokee, Ida, O'Brien, Plymouth, Sioux and 1 more | 10 hr |
| Sep 4, 12:13 PM CDT | Special Weather Statement | ARX | Allamakee | 32 min |
| Sep 4, 2:10 PM CDT | Mesoscale Discussion | SPC | Allamakee, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 13 more | 2 hr |
| Sep 4, 2:15 PM CDT | Special Weather Statement | ARX | Allamakee | 30 min |
| Sep 4, 2:30 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee | 45 min |
| Sep 4, 3:04 PM CDT | Special Weather Statement | ARX | Winneshiek | 41 min |
| Sep 4, 3:11 PM CDT | Special Weather Statement | DMX | Butler | 34 min |
| Sep 4, 3:21 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Grundy | 39 min |
| Sep 4, 3:27 PM CDT | Special Weather Statement | ARX | Allamakee | 33 min |
| Sep 4, 4:10 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee, Clayton | 35 min |
| Sep 4, 4:31 PM CDT | Severe Thunderstorm Warning | ARX | Clayton | 27 min |
| Sep 4, 4:35 PM CDT | Severe Thunderstorm Warning | ARX | Fayette, Winneshiek | 25 min |
| Sep 4, 5:02 PM CDT | Special Weather Statement | ARX | Clayton | 43 min |
| Sep 4, 5:13 PM CDT | Severe Thunderstorm Warning | ARX | Clayton | 30 min |
| Sep 4, 6:10 PM CDT | Special Weather Statement | ARX | Fayette | 35 min |
| Sep 4, 7:04 PM CDT | Severe Thunderstorm Warning | DVN | Delaware | 41 min |
| Sep 5, 12:48 AM CDT | Mesoscale Discussion | SPC | Lyon | 117 min |
| Sep 5, 4:46 AM CDT | Dense Fog Advisory | ARX | Chickasaw, Floyd, Howard, Mitchell | 4 hr |
| Sep 6, 10:23 AM CDT | Flood Watch | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 9 hr |
| Sep 6, 10:45 AM CDT | Severe Thunderstorm Warning | DMX | Emmet | 24 min |
| Sep 6, 11:05 AM CDT | Flood Watch | OAX | Harrison, Monona, Shelby | 9 hr |
| Sep 6, 11:58 AM CDT | Flash Flood Warning | FSD | Lyon, Osceola | 4 hr |
| Sep 6, 12:02 PM CDT | Flash Flood Warning | DMX | Emmet, Palo Alto | 6 hr |
| Sep 6, 12:12 PM CDT | Flood Watch | DMX | Calhoun, Crawford, Emmet, Palo Alto, Pocahontas, Sac | 10 hr |
| Sep 6, 2:11 PM CDT | Flash Flood Warning | FSD | Cherokee | 4 hr |
| Sep 6, 2:34 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee, Ida | 41 min |
| Sep 6, 2:37 PM CDT | Severe Thunderstorm Warning | DMX | Sac | 38 min |
| Sep 6, 2:45 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Carroll, Cass, Crawford and 11 more | 2 hr |
| Sep 6, 3:45 PM CDT | Severe Thunderstorm Warning | DMX | Adams, Union | 45 min |
| Sep 6, 3:47 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Carroll, Crawford, Sac | 43 min |
| Sep 6, 3:51 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Shelby | 39 min |
| Sep 6, 4:13 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Carroll, Greene, Webster | 47 min |
| Sep 6, 4:19 PM CDT | Flash Flood Warning | DMX | Crawford | 3 hr |
| Sep 6, 4:33 PM CDT | Flash Flood Warning | OAX | Shelby | 2 hr |
| Sep 6, 4:42 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Audubon, Boone, Cass, Clarke and 16 more | 5 hr |
| Sep 7, 3:02 AM CDT | Flash Flood Warning | FSD | Plymouth, Woodbury | 3 hr |
| Sep 7, 11:34 AM CDT | Heat Advisory | OAX | Fremont, Mills, Montgomery, Page | 31 hr |
| Sep 7, 11:42 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, Sioux | 48 min |
| Sep 8, 2:49 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Benton, Black Hawk, Boone and 38 more | 116 min |
| Sep 8, 5:50 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Jasper, Marshall, Polk, Story | 40 min |
| Sep 8, 6:21 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Mahaska, Marion, Polk, Poweshiek, Warren | 39 min |
| Sep 8, 6:29 PM CDT | Flash Flood Warning | DMX | Dallas, Polk | 6 hr |
| Sep 8, 6:55 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Lucas, Mahaska, Marion, Monroe, Polk and 2 more | 50 min |
| Sep 8, 7:33 PM CDT | Mesoscale Discussion | SPC | Cedar, Des Moines, Henry, Iowa, Jefferson, Johnson and 9 more | 117 min |
| Sep 8, 7:52 PM CDT | Special Weather Statement | DVN | Iowa, Keokuk | 53 min |
| Sep 8, 8:18 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Iowa, Johnson, Keokuk, Linn, Washington | 57 min |
| Sep 8, 8:50 PM CDT | Tornado Warning | DVN | Johnson, Linn | 25 min |
| Sep 8, 9:07 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Johnson, Jones, Linn, Muscatine | 46 min |
| Sep 8, 11:39 PM CDT | Dense Fog Advisory | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, O'Brien and 4 more | 8 hr |
| Sep 9, 12:27 AM CDT | Areal Flood Advisory | OAX | Harrison, Pottawattamie, Shelby | 2 hr |
| Sep 9, 1:29 AM CDT | River Flood Warning | DMX | Polk | 15 hr |
| Sep 9, 1:49 AM CDT | Flash Flood Warning | DMX | Adair, Audubon, Cass, Dallas, Guthrie, Madison and 2 more | 5 hr |
| Sep 9, 1:52 AM CDT | River Flood Watch | DMX | Polk | 3 hr |
| Sep 9, 2:08 AM CDT | River Flood Warning | DMX | Dallas, Polk | 17 hr |
| Sep 9, 2:30 AM CDT | Flash Flood Warning | OAX | Harrison, Mills, Pottawattamie, Shelby | 3 hr |
| Sep 9, 4:59 AM CDT | River Flood Warning | DMX | Polk | 16 hr |
| Sep 9, 7:06 AM CDT | River Flood Watch | DMX | Warren | 8 hr |
| Sep 11, 2:07 AM CDT | Dense Fog Advisory | DVN | Cedar, Clinton, Des Moines, Dubuque, Henry, Jackson and 8 more | 8 hr |
| Sep 11, 7:48 PM CDT | Severe Thunderstorm Warning | FSD | Lyon | 22 min |
| Sep 11, 8:36 PM CDT | Mesoscale Discussion | SPC | Lyon, Sioux | 114 min |
| Sep 11, 9:24 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Sioux | 51 min |
| Sep 11, 10:29 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Ida, Plymouth, Woodbury | 46 min |
| Sep 13, 8:19 PM CDT | Flood Watch | DMX | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 34 more | 3 days |
| Sep 14, 10:33 AM CDT | Special Weather Statement | DMX | Cass | 42 min |
| Sep 14, 11:24 AM CDT | Flood Watch | OAX | Fremont, Mills, Montgomery, Page, Pottawattamie | 50 hr |
| Sep 14, 12:06 PM CDT | Special Weather Statement | DMX | Boone | 24 min |
| Sep 14, 3:23 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Carroll, Cass, Crawford and 11 more | 2 hr |
| Sep 14, 3:32 PM CDT | Severe Thunderstorm Warning | DMX | Bremer | 28 min |
| Sep 14, 4:51 PM CDT | Tornado Watch | SPC | Adair, Adams, Audubon, Boone, Carroll, Cass and 18 more | 7 hr |
| Sep 14, 5:56 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 14 min |
| Sep 14, 6:18 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Cass, Clarke, Dallas and 14 more | 57 min |
| Sep 14, 6:32 PM CDT | Mesoscale Discussion | SPC | Buena Vista, Calhoun, Cerro Gordo, Crawford, Franklin, Hancock and 10 more | 58 min |
| Sep 14, 6:40 PM CDT | Tornado Warning | OAX | Fremont | 29 min |
| Sep 14, 6:52 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Montgomery, Pottawattamie | 38 min |
| Sep 14, 6:55 PM CDT | Tornado Warning | OAX | Fremont, Mills | 15 min |
| Sep 14, 6:57 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills | 48 min |
| Sep 14, 7:20 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Cass, Clarke, Dallas and 10 more | 55 min |
| Sep 14, 7:22 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Montgomery, Pottawattamie, Shelby | 38 min |
| Sep 14, 7:32 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery | 43 min |
| Sep 14, 7:40 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Audubon, Cass, Guthrie | 50 min |
| Sep 14, 7:44 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 46 min |
| Sep 14, 8:17 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Page | 43 min |
| Sep 14, 8:24 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Cass, Dallas, Guthrie, Madison and 1 more | 51 min |
| Sep 14, 8:44 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery, Page | 46 min |
| Sep 14, 9:11 PM CDT | Mesoscale Discussion | SPC | Benton, Black Hawk, Grundy, Hardin, Iowa, Jasper and 12 more | 64 min |
| Sep 14, 9:36 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 39 min |
| Sep 14, 9:58 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Montgomery, Page | 49 min |
| Sep 15, 12:07 AM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 23 min |
| Sep 15, 12:22 AM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 38 min |
| Sep 15, 12:38 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie | 37 min |
| Sep 15, 12:54 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie, Shelby | 66 min |
| Sep 15, 1:01 AM CDT | Special Weather Statement | DMX | Audubon, Guthrie | 29 min |
| Sep 15, 1:28 AM CDT | Special Weather Statement | DMX | Audubon, Cass, Guthrie | 32 min |
| Sep 15, 1:43 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Audubon, Cass, Guthrie | 32 min |
| Sep 15, 2:01 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Guthrie | 29 min |
| Sep 15, 2:25 AM CDT | Special Weather Statement | DMX | Dallas | 35 min |
| Sep 15, 3:01 AM CDT | Flash Flood Warning | DMX | Adair, Audubon, Cass, Dallas, Guthrie, Madison | 4 hr |
| Sep 15, 4:19 AM CDT | River Flood Watch | DMX | Polk | 5 hr |
| Sep 15, 6:59 AM CDT | River Flood Watch | DMX | Polk | 8 hr |
| Sep 15, 8:08 AM CDT | River Flood Watch | DMX | Cass | 8 hr |
| Sep 15, 1:45 PM CDT | River Flood Warning | DMX | Polk | 28 hr |
| Sep 15, 2:13 PM CDT | River Flood Warning | DMX | Dallas, Polk | 4 hr |
| Sep 15, 2:35 PM CDT | Mesoscale Discussion | SPC | Lee | 115 min |
| Sep 15, 3:30 PM CDT | Areal Flood Warning | DMX | Adair | 22 hr |
| Sep 15, 4:11 PM CDT | River Flood Warning | OAX | Montgomery | 27 hr |
| Sep 15, 10:28 PM CDT | Flash Flood Warning | DVN | Lee | 6 hr |
| Sep 16, 9:13 AM CDT | Areal Flood Warning | OAX | Fremont, Page | 6 hr |
| Sep 16, 10:56 AM CDT | River Flood Watch | DVN | Johnson, Washington | 12 hr |
| Sep 16, 12:32 PM CDT | Flood Watch | DVN | Benton, Cedar, Clinton, Des Moines, Henry, Iowa and 12 more | 20 hr |
| Sep 16, 3:52 PM CDT | Areal Flood Warning | OAX | Fremont, Page | 18 hr |
| Sep 16, 8:20 PM CDT | Dense Fog Advisory | DMX | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 38 more | 14 hr |
| Sep 16, 9:26 PM CDT | Dense Fog Advisory | DVN | Benton, Buchanan, Delaware, Henry, Iowa, Jefferson and 6 more | 12 hr |
| Sep 16, 10:57 PM CDT | Dense Fog Advisory | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 11 hr |
| Sep 17, 1:27 AM CDT | Dense Fog Advisory | FSD | Buena Vista, Cherokee, Ida | 10 hr |
| Sep 17, 2:10 AM CDT | Special Weather Statement | DVN | Muscatine | 50 min |
| Sep 17, 8:08 PM CDT | Flood Watch | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 59 hr |
| Sep 17, 9:35 PM CDT | River Flood Warning | DMX | Polk, Warren | 13 hr |
| Sep 18, 1:23 AM CDT | Flood Watch | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 10 more | 60 hr |
| Sep 18, 1:22 PM CDT | Flood Watch | DMX | Black Hawk, Bremer, Butler, Cerro Gordo, Worth | 22 hr |
| Sep 19, 2:21 AM CDT | Special Weather Statement | DVN | Delaware | 39 min |
| Sep 19, 4:00 AM CDT | Special Weather Statement | DVN | Dubuque | 45 min |
| Sep 19, 4:19 AM CDT | Flash Flood Warning | DVN | Dubuque, Jackson | 6 hr |
| Sep 19, 4:21 AM CDT | Flash Flood Warning | ARX | Clayton, Fayette | 4 hr |
| Sep 19, 6:34 AM CDT | River Flood Warning | ARX | Clayton | 30 hr |
| Sep 19, 8:16 AM CDT | Areal Flood Warning | ARX | Fayette | 29 hr |
| Sep 19, 8:23 AM CDT | River Flood Warning | ARX | Winneshiek | 45 hr |
| Sep 19, 8:23 AM CDT | River Flood Warning | ARX | Clayton | 46 hr |
| Sep 19, 8:42 AM CDT | River Flood Watch | ARX | Floyd | 22 hr |
| Sep 19, 8:54 AM CDT | River Flood Watch | DVN | Johnson, Washington | 20 hr |
| Sep 19, 8:54 AM CDT | River Flood Watch | DVN | Louisa, Muscatine | 25 hr |
| Sep 19, 9:22 AM CDT | Areal Flood Warning | ARX | Clayton | 39 hr |
| Sep 19, 9:37 AM CDT | River Flood Watch | DVN | Jackson | 11 hr |
| Sep 19, 9:37 AM CDT | River Flood Watch | DVN | Clinton, Scott | 21 days |
| Sep 19, 9:37 AM CDT | River Flood Watch | DVN | Cedar, Jones, Linn | 35 hr |
| Sep 19, 6:52 PM CDT | Severe Thunderstorm Warning | DMX | Decatur, Ringgold | 38 min |
| Sep 19, 7:05 PM CDT | Mesoscale Discussion | SPC | Decatur, Ringgold | 85 min |
| Sep 19, 7:23 PM CDT | Severe Thunderstorm Warning | DMX | Decatur, Wayne | 37 min |
| Sep 19, 7:30 PM CDT | Severe Thunderstorm Warning | DMX | Decatur, Wayne | 30 min |
| Sep 19, 8:42 PM CDT | River Flood Watch | DVN | Louisa | 6 days |
| Sep 19, 8:42 PM CDT | River Flood Watch | DVN | Louisa | 6 days |
| Sep 19, 8:50 PM CDT | River Flood Warning | DVN | Jackson | 48 hr |
| Sep 19, 8:57 PM CDT | River Flood Warning | DVN | Clinton, Scott | 21 days |
| Sep 19, 10:12 PM CDT | River Flood Watch | DVN | Muscatine, Scott | 4 days |
| Sep 19, 10:12 PM CDT | River Flood Watch | DVN | Louisa, Muscatine | 5 days |
| Sep 19, 10:12 PM CDT | River Flood Watch | DVN | Louisa | 6 days |
| Sep 19, 10:12 PM CDT | River Flood Watch | DVN | Des Moines, Louisa | 6 days |
| Sep 19, 10:12 PM CDT | River Flood Watch | DVN | Des Moines | 7 days |
| Sep 19, 10:12 PM CDT | River Flood Watch | DVN | Muscatine | 5 days |
| Sep 19, 10:12 PM CDT | River Flood Watch | DVN | Des Moines, Lee | 6 days |
| Sep 19, 10:20 PM CDT | River Flood Watch | DVN | Keokuk | 11 hr |
| Sep 19, 11:56 PM CDT | Special Weather Statement | DVN | Louisa, Scott | 64 min |
| Sep 20, 12:16 AM CDT | Flash Flood Warning | DVN | Cedar, Iowa, Johnson, Keokuk, Louisa, Muscatine and 1 more | 8 hr |
| Sep 20, 1:03 AM CDT | Special Weather Statement | DVN | Jefferson, Keokuk, Washington | 42 min |
| Sep 20, 1:18 AM CDT | Severe Thunderstorm Warning | DVN | Cedar, Henry, Jefferson, Johnson, Keokuk, Louisa and 3 more | 57 min |
| Sep 20, 1:38 AM CDT | Flash Flood Warning | DVN | Clinton, Muscatine, Scott | 6 hr |
| Sep 20, 2:02 AM CDT | Flash Flood Warning | DVN | Benton, Cedar, Iowa, Johnson, Jones, Linn | 6 hr |
| Sep 20, 2:12 AM CDT | Special Weather Statement | DVN | Cedar, Muscatine, Scott | 48 min |
| Sep 20, 2:21 AM CDT | Severe Thunderstorm Warning | DVN | Clinton, Muscatine, Scott | 27 min |
| Sep 20, 5:12 AM CDT | Flash Flood Warning | DVN | Delaware, Dubuque, Jackson, Jones | 4 hr |
| Sep 20, 5:17 AM CDT | River Flood Warning | DVN | Johnson, Washington | 4 days |
| Sep 20, 5:43 AM CDT | River Flood Warning | DVN | Johnson, Louisa, Washington | 4 days |
| Sep 20, 7:55 AM CDT | Areal Flood Warning | DVN | Benton, Cedar, Iowa, Johnson, Jones, Linn | 6 hr |
| Sep 20, 8:04 AM CDT | Areal Flood Warning | DVN | Cedar, Iowa, Johnson, Keokuk, Louisa, Muscatine and 1 more | 6 hr |
| Sep 20, 9:44 AM CDT | River Flood Warning | DVN | Keokuk | 60 hr |
| Sep 20, 9:51 AM CDT | River Flood Warning | DVN | Louisa, Muscatine | 5 days |
| Sep 20, 10:02 AM CDT | River Flood Watch | DVN | Louisa | 35 hr |
| Sep 20, 10:02 AM CDT | River Flood Warning | DVN | Benton, Iowa | 24 hr |
| Sep 20, 7:42 PM CDT | River Flood Warning | DVN | Louisa | 6 days |
| Sep 20, 7:42 PM CDT | River Flood Warning | DVN | Louisa | 5 days |
| Sep 21, 11:47 AM CDT | River Flood Warning | DVN | Des Moines, Louisa | 4 days |
| Sep 21, 11:47 AM CDT | River Flood Warning | DVN | Des Moines | 5 days |
| Sep 21, 11:47 AM CDT | River Flood Warning | DVN | Des Moines, Lee | 5 days |
| Sep 21, 11:36 PM CDT | Special Weather Statement | DVN | Washington | 39 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 | 50 |
| Tornado Warning | 4 |
| Severe Thunderstorm Watch | 3 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 16 |
| Special Weather Statement | 20 |
| Flooding | |
| Areal Flood Warning | 7 |
| Flash Flood Warning | 17 |
| River Flood Warning | 22 |
| Flood Watch | 9 |
| River Flood Watch | 23 |
| Areal Flood Advisory | 1 |
| Heat | |
| Extreme Heat Warning | 1 |
| Heat Advisory | 4 |
| Fog and smoke | |
| Dense Fog Advisory | 9 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Louisa County21
- Fremont County20
- Polk County19
- Pottawattamie County18
- Johnson County18
- Muscatine County18
- Washington County18
- Montgomery County17
- Cass County17
- Guthrie County17
- Mills County16
- Page County16
- Adair County16
- Shelby County15
- Keokuk County15
- Audubon County15
- Sioux County14
- Cedar County14
- Iowa County14
- Dallas County14
- Harrison County13
- Lyon County13
- Linn County12
- Cherokee County11
- Plymouth County11
- Scott County11
- Clayton County11
- Adams County11
- Union County11
- Warren County11
- Benton County10
- Jones County10
- Ida County10
- Des Moines County10
- Madison County10
- Buena Vista County9
- O'Brien County9
- Osceola County9
- Ringgold County9
- Delaware County8
59 more counties
- Woodbury County8
- Lee County8
- Crawford County8
- Carroll County8
- Taylor County8
- Dubuque County7
- Black Hawk County7
- Butler County7
- Grundy County7
- Emmet County7
- Jefferson County7
- Fayette County7
- Allamakee County7
- Greene County7
- Boone County7
- Clarke County7
- Decatur County7
- Jasper County7
- Mahaska County7
- Marion County7
- Poweshiek County7
- Clinton County7
- Jackson County7
- Bremer County6
- Marshall County6
- Monona County6
- Dickinson County6
- Pocahontas County6
- Henry County6
- Calhoun County6
- Monroe County6
- Buchanan County5
- Tama County5
- Clay County5
- Humboldt County5
- Palo Alto County5
- Winnebago County5
- Cerro Gordo County5
- Worth County5
- Van Buren County5
- Floyd County5
- Hardin County5
- Winneshiek County5
- Sac County5
- Lucas County5
- Story County5
- Hancock County4
- Kossuth County4
- Franklin County4
- Hamilton County4
- Wright County4
- Webster County4
- Wapello County4
- Wayne County4
- Mitchell County3
- Chickasaw County3
- Howard County3
- Appanoose County2
- Davis County2
Nearby
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.