Alert archive / Iowa / 2011
Weather alerts in Iowa, February 2011
109 weather alerts in February 2011, 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 February 2011. Tap one for its archive.
- Alerts
- 109
- Warnings
- 49
- Watches
- 3
- Advisories
- 47
- Busiest day
- February 18, 201124 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 |
|---|---|---|---|---|
| Feb 1, 4:02 AM CST | Wind Chill Warning | DMX | Emmet, Kossuth, Palo Alto, Pocahontas, Winnebago | 30 hr |
| Feb 1, 4:02 AM CST | Wind Chill Advisory | DMX | Calhoun, Carroll, Cerro Gordo, Crawford, Emmet, Franklin and 11 more | 32 hr |
| Feb 1, 4:05 AM CST | Wind Chill Warning | OAX | Monona | 23 hr |
| Feb 1, 4:05 AM CST | Wind Chill Advisory | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 31 hr |
| Feb 1, 4:05 AM CST | Winter Weather Advisory | OAX | Monona | 20 hr |
| Feb 1, 4:37 AM CST | Winter Storm Warning | ARX | Allamakee, Clayton, Fayette | 29 hr |
| Feb 1, 4:37 AM CST | Winter Weather Advisory | ARX | Chickasaw, Floyd, Howard, Mitchell, Winneshiek | 29 hr |
| Feb 1, 10:36 AM CST | Mesoscale Discussion | SPC | Appanoose, Cedar, Clarke, Clinton, Davis, Decatur and 19 more | 6 hr |
| Feb 1, 3:36 PM CST | Mesoscale Discussion | SPC | Appanoose, Benton, Buchanan, Cedar, Clarke, Clinton and 32 more | 6 hr |
| Feb 2, 3:48 AM CST | Winter Weather Advisory | DMX | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 28 more | 8 hr |
| Feb 2, 2:58 PM CST | Wind Chill Advisory | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 15 hr |
| Feb 2, 3:09 PM CST | Wind Chill Advisory | DMX | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more | 18 hr |
| Feb 2, 3:24 PM CST | Wind Chill Advisory | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 17 hr |
| Feb 2, 3:35 PM CST | Wind Chill Advisory | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 18 hr |
| Feb 2, 3:38 PM CST | Wind Chill Advisory | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more | 19 hr |
| Feb 3, 5:48 AM CST | Wind Chill Advisory | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 3 more | 3 hr |
| Feb 5, 10:26 AM CST | Freezing Rain Advisory | FSD | Lyon, Sioux | 106 min |
| Feb 7, 3:35 AM CST | Wind Chill Advisory | DMX | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more | 32 hr |
| Feb 7, 3:48 AM CST | Wind Chill Advisory | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 32 hr |
| Feb 7, 2:35 PM CST | Wind Chill Advisory | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 21 hr |
| Feb 7, 3:24 PM CST | Wind Chill Advisory | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 21 hr |
| Feb 7, 3:31 PM CST | Wind Chill Advisory | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more | 20 hr |
| Feb 8, 2:37 PM CST | Wind Chill Advisory | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 21 hr |
| Feb 8, 3:17 PM CST | Wind Chill Advisory | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 20 hr |
| Feb 8, 3:24 PM CST | Wind Chill Advisory | OAX | Harrison, Mills, Monona, Montgomery, Page, Pottawattamie and 1 more | 17 hr |
| Feb 8, 3:37 PM CST | Wind Chill Advisory | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 10 more | 18 hr |
| Feb 8, 3:44 PM CST | Wind Chill Advisory | DMX | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more | 20 hr |
| Feb 9, 2:41 PM CST | Wind Chill Advisory | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 7 more | 19 hr |
| Feb 10, 3:40 AM CST | Wind Chill Advisory | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 6 hr |
| Feb 12, 2:41 PM CST | Wind Advisory | FSD | Clay, Dickinson, Lyon, O'Brien, Osceola, Sioux | 36 hr |
| Feb 13, 4:02 AM CST | Wind Advisory | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 26 hr |
| Feb 13, 4:05 AM CST | Wind Advisory | DMX | Cerro Gordo, Emmet, Hancock, Kossuth, Palo Alto, Winnebago and 1 more | 26 hr |
| Feb 15, 11:56 PM CST | Dense Fog Advisory | OAX | Fremont, Mills, Montgomery, Page, Pottawattamie, Shelby | 10 hr |
| Feb 16, 12:59 AM CST | Dense Fog Advisory | DMX | Adair, Adams, Appanoose, Audubon, Cass, Clarke and 18 more | 9 hr |
| Feb 16, 5:00 AM CST | Dense Fog Advisory | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more | 8 hr |
| Feb 16, 9:24 AM CST | Dense Fog Advisory | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 30 hr |
| Feb 16, 10:28 AM CST | Dense Fog Advisory | OAX | Fremont, Mills, Montgomery, Page | 92 min |
| Feb 16, 3:30 PM CST | River Flood Warning | DVN | Lee, Van Buren | 43 hr |
| Feb 16, 5:55 PM CST | Dense Fog Advisory | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 16 hr |
| Feb 16, 6:00 PM CST | Dense Fog Advisory | DMX | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more | 16 hr |
| Feb 16, 6:17 PM CST | Dense Fog Advisory | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 11 hr |
| Feb 16, 8:25 PM CST | Dense Fog Advisory | DVN | Benton, Buchanan, Cedar, Clinton, Delaware, Dubuque and 7 more | 6 hr |
| Feb 17, 9:02 AM CST | River Flood Warning | DVN | Iowa, Johnson | 7 days |
| Feb 17, 9:02 AM CST | River Flood Warning | DVN | Johnson, Washington | 50 hr |
| Feb 17, 1:47 PM CST | Flash Flood Warning | DMX | Dallas, Polk | 4 hr |
| Feb 17, 7:01 PM CST | River Flood Warning | DVN | Clinton, Scott | 26 hr |
| Feb 17, 7:01 PM CST | River Flood Warning | DVN | Keokuk | 16 hr |
| Feb 17, 7:36 PM CST | River Flood Warning | DVN | Johnson, Louisa, Washington | 28 hr |
| Feb 17, 10:59 PM CST | River Flood Warning | OAX | Fremont | 11 hr |
| Feb 18, 12:05 AM CST | River Flood Warning | DMX | Mahaska, Marion | 6 hr |
| Feb 18, 1:12 AM CST | River Flood Warning | DVN | Lee | 10 hr |
| Feb 18, 2:02 AM CST | River Flood Warning | FSD | Clay, Dickinson | 33 hr |
| Feb 18, 4:18 AM CST | Winter Storm Watch | FSD | Clay, Dickinson, Lyon, O'Brien, Osceola, Sioux | 35 hr |
| Feb 18, 5:39 AM CST | River Flood Warning | DMX | Emmet | 12 hr |
| Feb 18, 8:58 AM CST | River Flood Warning | FSD | Sioux | 26 hr |
| Feb 18, 8:58 AM CST | River Flood Warning | FSD | Clay, Dickinson | 49 hr |
| Feb 18, 8:58 AM CST | River Flood Warning | FSD | Clay | 6 days |
| Feb 18, 9:26 AM CST | Areal Flood Warning | FSD | Buena Vista | 12 hr |
| Feb 18, 9:42 AM CST | Areal Flood Warning | OAX | Fremont | 6 hr |
| Feb 18, 9:54 AM CST | River Flood Warning | DVN | Des Moines, Henry, Lee | 36 hr |
| Feb 18, 1:31 PM CST | River Flood Warning | FSD | Sioux | 45 hr |
| Feb 18, 1:31 PM CST | River Flood Warning | FSD | Plymouth | 4 days |
| Feb 18, 1:31 PM CST | River Flood Warning | FSD | Clay | 4 days |
| Feb 18, 2:22 PM CST | River Flood Warning | DVN | Louisa | 7 days |
| Feb 18, 2:58 PM CST | Winter Storm Watch | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 13 hr |
| Feb 18, 3:24 PM CST | Areal Flood Advisory | OAX | Fremont, Page | 24 hr |
| Feb 18, 3:38 PM CST | River Flood Warning | FSD | Cherokee | 19 hr |
| Feb 18, 3:48 PM CST | Winter Storm Watch | DMX | Cerro Gordo, Emmet, Hancock, Kossuth, Palo Alto, Winnebago and 1 more | 25 hr |
| Feb 18, 5:06 PM CST | River Flood Warning | DMX | Black Hawk, Butler | 28 hr |
| Feb 18, 7:54 PM CST | River Flood Warning | DMX | Humboldt, Kossuth | 8 days |
| Feb 18, 10:57 PM CST | River Flood Warning | DVN | Louisa | 60 hr |
| Feb 19, 3:43 AM CST | Flash Flood Warning | DMX | Webster | 6 hr |
| Feb 19, 4:02 AM CST | Winter Storm Warning | DMX | Bremer, Cerro Gordo, Emmet, Hancock, Kossuth, Palo Alto and 2 more | 33 hr |
| Feb 19, 4:03 AM CST | Winter Storm Warning | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 56 hr |
| Feb 19, 4:07 AM CST | Winter Storm Warning | FSD | Lyon | 41 hr |
| Feb 19, 9:25 AM CST | River Flood Warning | DMX | Webster | 32 hr |
| Feb 19, 3:37 PM CST | Ice Storm Warning | FSD | Clay, Dickinson, O'Brien, Osceola, Sioux | 24 hr |
| Feb 19, 4:07 PM CST | Winter Weather Advisory | DVN | Buchanan, Delaware, Dubuque, Jackson | 17 hr |
| Feb 19, 4:20 PM CST | Winter Weather Advisory | DMX | Black Hawk, Bremer, Butler, Franklin, Grundy, Humboldt and 2 more | 17 hr |
| Feb 19, 4:47 PM CST | River Flood Warning | DVN | Clinton, Scott | 10 days |
| Feb 19, 11:25 PM CST | Mesoscale Discussion | SPC | Clay, Dickinson, Emmet, Kossuth, Lyon, Osceola and 3 more | 5 hr |
| Feb 20, 4:35 AM CST | Mesoscale Discussion | SPC | Allamakee, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 25 more | 6 hr |
| Feb 20, 4:53 AM CST | River Flood Warning | OAX | Monona | 15 hr |
| Feb 20, 9:42 AM CST | River Flood Warning | DVN | Des Moines, Henry, Lee | 56 hr |
| Feb 20, 10:30 AM CST | River Flood Warning | DMX | Mahaska, Wapello | 24 hr |
| Feb 20, 10:49 AM CST | Mesoscale Discussion | SPC | Allamakee, Emmet, Howard, Mitchell, Winnebago, Winneshiek and 1 more | 4 hr |
| Feb 20, 11:06 AM CST | Special Weather Statement | DVN | Buchanan | 24 min |
| Feb 20, 11:07 AM CST | Winter Weather Advisory | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 37 hr |
| Feb 20, 11:24 AM CST | Special Weather Statement | DVN | Buchanan | 51 min |
| Feb 20, 12:34 PM CST | Winter Weather Advisory | DMX | Cerro Gordo, Emmet, Hancock, Kossuth, Palo Alto, Winnebago and 1 more | 32 hr |
| Feb 20, 1:18 PM CST | River Flood Warning | DMX | Wapello | 28 hr |
| Feb 20, 3:25 PM CST | Winter Weather Advisory | FSD | Dickinson, Lyon, Osceola | 12 hr |
| Feb 20, 4:18 PM CST | River Flood Warning | DVN | Johnson, Washington | 18 hr |
| Feb 20, 5:04 PM CST | River Flood Warning | DMX | Black Hawk, Bremer, Butler | 6 days |
| Feb 20, 6:09 PM CST | Flash Flood Warning | DMX | Webster | 6 hr |
| Feb 20, 8:39 PM CST | River Flood Warning | DMX | Boone, Hamilton, Webster | 71 hr |
| Feb 21, 9:46 AM CST | River Flood Warning | DMX | Webster | 11 days |
| Feb 21, 12:16 PM CST | Flash Flood Warning | DVN | Benton | 6 hr |
| Feb 21, 6:20 PM CST | Areal Flood Warning | DVN | Benton | 10 hr |
| Feb 23, 3:22 PM CST | Winter Weather Advisory | OAX | Fremont, Mills, Montgomery, Page, Pottawattamie | 32 hr |
| Feb 24, 3:20 AM CST | Winter Storm Warning | DVN | Des Moines, Henry, Jefferson, Lee, Van Buren | 17 hr |
| Feb 24, 3:20 AM CST | Winter Weather Advisory | DVN | Cedar, Clinton, Des Moines, Henry, Iowa, Jefferson and 8 more | 26 hr |
| Feb 24, 3:47 AM CST | Winter Weather Advisory | DMX | Adair, Adams, Appanoose, Cass, Clarke, Dallas and 17 more | 20 hr |
| Feb 24, 11:13 AM CST | Mesoscale Discussion | SPC | Adams, Appanoose, Decatur, Fremont, Page, Ringgold and 2 more | 6 hr |
| Feb 24, 12:05 PM CST | Winter Storm Warning | DMX | Appanoose, Clarke, Davis, Decatur, Lucas, Mahaska and 6 more | 12 hr |
| Feb 24, 5:20 PM CST | Mesoscale Discussion | SPC | Appanoose, Davis, Des Moines, Henry, Jefferson, Lee and 5 more | 6 hr |
| Feb 27, 3:37 PM CST | Winter Weather Advisory | DVN | Benton, Cedar, Clinton, Des Moines, Henry, Iowa and 12 more | 11 hr |
| Feb 27, 3:42 PM CST | Winter Weather Advisory | DMX | Appanoose, Davis, Decatur, Lucas, Mahaska, Monroe and 3 more | 7 hr |
| Feb 27, 5:50 PM CST | Mesoscale Discussion | SPC | Appanoose, Cedar, Clarke, Clinton, Davis, Decatur and 19 more | 6 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 | |
| Mesoscale Discussion | 8 |
| Special Weather Statement | 2 |
| Flooding | |
| Areal Flood Warning | 3 |
| Flash Flood Warning | 4 |
| River Flood Warning | 33 |
| Areal Flood Advisory | 1 |
| Winter | |
| Ice Storm Warning | 1 |
| Winter Storm Warning | 6 |
| Winter Storm Watch | 3 |
| Freezing Rain Advisory | 1 |
| Winter Weather Advisory | 13 |
| Cold | |
| Wind Chill Warning | 2 |
| Wind Chill Advisory | 20 |
| Wind and dust | |
| Wind Advisory | 3 |
| 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.
- Johnson County15
- Wapello County15
- Emmet County14
- Appanoose County14
- Clinton County14
- Mahaska County14
- Washington County14
- Clay County14
- Kossuth County13
- Winnebago County13
- Davis County13
- Decatur County13
- Lee County13
- Louisa County13
- Monroe County13
- Wayne County13
- Dickinson County13
- Palo Alto County12
- Allamakee County12
- Howard County12
- Mitchell County12
- Winneshiek County12
- Des Moines County12
- Henry County12
- Iowa County12
- Lucas County12
- Marion County12
- Scott County12
- Sioux County12
- Worth County11
- Fremont County11
- Clayton County11
- Fayette County11
- Chickasaw County11
- Floyd County11
- Cedar County11
- Clarke County11
- Keokuk County11
- Van Buren County11
- Buchanan County11
59 more counties
- Jackson County11
- Ringgold County11
- Lyon County11
- Osceola County11
- Cerro Gordo County10
- Hancock County10
- Webster County10
- Page County10
- Jefferson County10
- Muscatine County10
- Poweshiek County10
- Benton County10
- Delaware County9
- Dubuque County9
- Jones County9
- Polk County9
- Black Hawk County9
- Bremer County9
- Butler County9
- O'Brien County9
- Humboldt County8
- Monona County8
- Mills County8
- Montgomery County8
- Jasper County8
- Linn County8
- Warren County8
- Adams County8
- Dallas County8
- Taylor County8
- Pocahontas County7
- Franklin County7
- Wright County7
- Pottawattamie County7
- Tama County7
- Adair County7
- Cass County7
- Madison County7
- Union County7
- Hamilton County6
- Shelby County6
- Marshall County6
- Story County6
- Audubon County6
- Boone County6
- Grundy County6
- Guthrie County6
- Buena Vista County6
- Cherokee County6
- Calhoun County5
- Carroll County5
- Crawford County5
- Sac County5
- Harrison County5
- Greene County5
- Hardin County5
- Ida County5
- Plymouth County5
- Woodbury County4
Nearby
Alerts in force nowTornadoes on recordThe radar archive20102012
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.