Alert archive / Iowa / 2011
Weather alerts in Iowa, March 2011
145 weather alerts in March 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 March 2011. Tap one for its archive.
- Alerts
- 145
- Warnings
- 98
- Watches
- 12
- Advisories
- 15
- Busiest day
- March 23, 201142 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 |
|---|---|---|---|---|
| Mar 6, 3:58 AM CST | Winter Storm Watch | OAX | Monona | 36 hr |
| Mar 7, 3:53 AM CST | Winter Storm Watch | ARX | Allamakee, Chickasaw, Floyd, Howard, Mitchell, Winneshiek | 32 hr |
| Mar 7, 3:47 PM CST | Winter Weather Advisory | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 30 hr |
| Mar 8, 3:50 AM CST | Winter Weather Advisory | FSD | Buena Vista, Cherokee, Clay, Ida, Woodbury | 17 hr |
| Mar 8, 4:15 AM CST | Winter Storm Watch | DMX | Adair, Adams, Audubon, Black Hawk, Boone, Bremer and 34 more | 11 hr |
| Mar 8, 11:40 AM CST | Winter Weather Advisory | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 25 hr |
| Mar 8, 3:39 PM CST | Winter Storm Warning | DMX | Black Hawk, Bremer, Butler, Cerro Gordo, Franklin, Grundy and 4 more | 18 hr |
| Mar 8, 3:39 PM CST | Winter Weather Advisory | DMX | Adair, Adams, Audubon, Black Hawk, Boone, Calhoun and 29 more | 18 hr |
| Mar 10, 3:56 AM CST | Dense Fog Advisory | FSD | Buena Vista, Cherokee, Lyon, O'Brien, Osceola, Plymouth and 1 more | 7 hr |
| Mar 10, 11:50 PM CST | Dense Fog Advisory | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 9 hr |
| Mar 11, 3:29 AM CST | Dense Fog Advisory | DVN | Benton, Buchanan, Cedar, Delaware, Des Moines, Dubuque and 12 more | 7 hr |
| Mar 11, 4:00 AM CST | Wind Advisory | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 32 hr |
| Mar 11, 1:40 PM CST | Wind Advisory | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 22 hr |
| Mar 11, 3:20 PM CST | Wind Advisory | DMX | Black Hawk, Bremer, Butler, Cerro Gordo, Emmet, Franklin and 9 more | 21 hr |
| Mar 12, 6:55 PM CST | River Flood Warning | FSD | Clay | 21 hr |
| Mar 12, 6:55 PM CST | River Flood Warning | FSD | Buena Vista, Clay | 62 hr |
| Mar 14, 9:18 AM CDT | Dense Fog Advisory | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 3 hr |
| Mar 15, 1:17 PM CDT | River Flood Watch | FSD | Sioux | 6 days |
| Mar 15, 1:17 PM CDT | River Flood Watch | FSD | Plymouth | 6 days |
| Mar 15, 1:17 PM CDT | River Flood Watch | FSD | Lyon | 6 days |
| Mar 15, 1:17 PM CDT | River Flood Watch | FSD | Clay | 6 days |
| Mar 15, 1:17 PM CDT | River Flood Watch | FSD | Buena Vista, Clay | 6 days |
| Mar 15, 1:17 PM CDT | River Flood Watch | FSD | Lyon | 6 days |
| Mar 15, 9:36 PM CDT | River Flood Warning | FSD | Buena Vista, Clay | 13 days |
| Mar 16, 9:53 AM CDT | River Flood Warning | DMX | Emmet | 48 days |
| Mar 16, 11:32 AM CDT | River Flood Warning | FSD | Lyon | 45 days |
| Mar 16, 11:32 AM CDT | River Flood Warning | FSD | Sioux | 54 days |
| Mar 16, 11:32 AM CDT | River Flood Warning | FSD | Plymouth | 53 days |
| Mar 16, 11:32 AM CDT | River Flood Warning | FSD | Lyon | 9 days |
| Mar 16, 11:32 AM CDT | River Flood Warning | FSD | Clay | 12 days |
| Mar 16, 7:51 PM CDT | River Flood Warning | DMX | Humboldt, Kossuth | 7 days |
| Mar 17, 7:56 AM CDT | Special Weather Statement | DVN | Benton, Buchanan, Linn | 64 min |
| Mar 17, 8:07 AM CDT | River Flood Warning | FSD | Clay, Dickinson | 11 days |
| Mar 17, 8:54 AM CDT | Special Weather Statement | DVN | Cedar, Johnson, Jones, Linn | 51 min |
| Mar 17, 11:18 AM CDT | River Flood Warning | DMX | Cerro Gordo, Floyd, Worth | 9 hr |
| Mar 18, 3:25 AM CDT | River Flood Warning | FSD | Clay | 11 hr |
| Mar 18, 8:44 PM CDT | River Flood Warning | FSD | Clay, Dickinson | 7 days |
| Mar 19, 2:51 AM CDT | Dense Fog Advisory | FSD | Dickinson | 7 hr |
| Mar 19, 3:19 AM CDT | Dense Fog Advisory | DMX | Cerro Gordo, Emmet, Franklin, Hancock, Humboldt, Kossuth and 5 more | 7 hr |
| Mar 19, 3:27 AM CDT | Dense Fog Advisory | ARX | Floyd, Mitchell | 6 hr |
| Mar 20, 3:26 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Page | 34 min |
| Mar 20, 3:28 AM CDT | Severe Thunderstorm Warning | DMX | Audubon, Carroll | 47 min |
| Mar 20, 5:27 AM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Grundy, Marshall, Tama | 48 min |
| Mar 20, 8:19 AM CDT | River Flood Warning | FSD | Lyon | 43 hr |
| Mar 20, 11:11 AM CDT | River Flood Warning | DMX | Black Hawk | 8 days |
| Mar 20, 2:51 PM CDT | Mesoscale Discussion | SPC | Adams, Appanoose, Benton, Clarke, Dallas, Davis and 26 more | 114 min |
| Mar 20, 8:53 PM CDT | River Flood Warning | FSD | Lyon | 41 hr |
| Mar 20, 9:04 PM CDT | River Flood Warning | DVN | Clinton, Scott | 13 days |
| Mar 20, 9:20 PM CDT | River Flood Warning | ARX | Allamakee | 3 days |
| Mar 20, 9:31 PM CDT | Special Weather Statement | DVN | Des Moines | 44 min |
| Mar 20, 9:38 PM CDT | Special Weather Statement | DVN | Lee | 67 min |
| Mar 21, 10:29 AM CDT | River Flood Warning | DMX | Black Hawk | 7 days |
| Mar 21, 10:37 AM CDT | River Flood Warning | DMX | Cerro Gordo, Floyd, Worth | 3 days |
| Mar 21, 10:51 AM CDT | Flood Watch | ARX | Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more | 41 hr |
| Mar 21, 11:40 AM CDT | River Flood Warning | ARX | Floyd, Mitchell | 4 days |
| Mar 21, 12:22 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Mahaska, Marion, Polk | 38 min |
| Mar 21, 1:00 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Mahaska, Poweshiek | 45 min |
| Mar 21, 1:10 PM CDT | Special Weather Statement | DVN | Iowa, Johnson, Washington | 80 min |
| Mar 21, 10:04 PM CDT | River Flood Warning | ARX | Clayton | 48 hr |
| Mar 21, 10:05 PM CDT | Mesoscale Discussion | SPC | Buena Vista, Calhoun, Cherokee, Clay, Dickinson, Emmet and 17 more | 115 min |
| Mar 21, 11:31 PM CDT | Special Weather Statement | DVN | Buchanan, Delaware | 59 min |
| Mar 22, 6:30 AM CDT | River Flood Warning | DMX | Black Hawk, Bremer, Butler | 4 days |
| Mar 22, 6:33 AM CDT | Severe Thunderstorm Warning | ARX | Floyd, Mitchell | 27 min |
| Mar 22, 10:52 AM CDT | River Flood Warning | DMX | Palo Alto | 16 days |
| Mar 22, 10:52 AM CDT | River Flood Warning | DMX | Humboldt | 25 days |
| Mar 22, 12:01 PM CDT | River Flood Warning | ARX | Clayton | 45 days |
| Mar 22, 12:01 PM CDT | River Flood Warning | ARX | Clayton | 38 days |
| Mar 22, 1:19 PM CDT | Mesoscale Discussion | SPC | Adams, Cass, Crawford, Fremont, Harrison, Mills and 7 more | 116 min |
| Mar 22, 2:03 PM CDT | Tornado Watch | SPC | Adair, Adams, Appanoose, Audubon, Boone, Calhoun and 38 more | 7 hr |
| Mar 22, 2:23 PM CDT | Special Weather Statement | DVN | Cedar, Clinton, Dubuque, Jackson, Jones | 52 min |
| Mar 22, 4:10 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills | 50 min |
| Mar 22, 4:34 PM CDT | Severe Thunderstorm Warning | DMX | Hancock, Humboldt, Kossuth, Wright | 13 min |
| Mar 22, 4:48 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 42 min |
| Mar 22, 4:53 PM CDT | Tornado Warning | OAX | Harrison | 37 min |
| Mar 22, 4:55 PM CDT | Tornado Warning | DMX | Carroll, Crawford | 35 min |
| Mar 22, 4:57 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery, Pottawattamie | 33 min |
| Mar 22, 5:02 PM CDT | Tornado Warning | DMX | Adair, Adams, Cass | 43 min |
| Mar 22, 5:03 PM CDT | Tornado Warning | OAX | Harrison, Pottawattamie | 27 min |
| Mar 22, 5:07 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Cass, Guthrie | 23 min |
| Mar 22, 5:08 PM CDT | Tornado Warning | OAX | Montgomery | 22 min |
| Mar 22, 5:18 PM CDT | Tornado Warning | DMX | Audubon, Cass, Guthrie | 27 min |
| Mar 22, 5:19 PM CDT | Tornado Warning | OAX | Shelby | 26 min |
| Mar 22, 5:27 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Carroll, Greene | 33 min |
| Mar 22, 5:29 PM CDT | Tornado Warning | DMX | Crawford | 35 min |
| Mar 22, 5:31 PM CDT | Tornado Warning | OAX | Harrison, Shelby | 29 min |
| Mar 22, 5:33 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Cass, Harrison, Madison and 2 more | 57 min |
| Mar 22, 5:43 PM CDT | Tornado Warning | DMX | Audubon, Cass, Greene, Guthrie | 15 min |
| Mar 22, 5:44 PM CDT | Tornado Warning | DMX | Adair, Madison | 46 min |
| Mar 22, 5:47 PM CDT | Tornado Warning | DMX | Adams, Ringgold, Taylor, Union | 43 min |
| Mar 22, 6:16 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Madison, Polk | 44 min |
| Mar 22, 6:19 PM CDT | Special Weather Statement | DVN | Louisa, Scott | 56 min |
| Mar 22, 6:26 PM CDT | Tornado Warning | DMX | Dallas, Madison, Polk, Warren | 49 min |
| Mar 22, 6:27 PM CDT | Tornado Warning | DMX | Adair, Clarke, Madison, Union, Warren | 39 min |
| Mar 22, 6:32 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Hancock, Worth, Wright | 28 min |
| Mar 22, 6:45 PM CDT | Tornado Warning | DMX | Clarke, Decatur, Ringgold | 30 min |
| Mar 22, 6:50 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Dallas, Madison | 25 min |
| Mar 22, 6:57 PM CDT | Tornado Warning | DMX | Adair, Madison, Union | 33 min |
| Mar 22, 7:01 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Polk | 44 min |
| Mar 22, 7:07 PM CDT | Severe Thunderstorm Warning | DMX | Adams, Ringgold, Taylor, Union | 53 min |
| Mar 22, 7:09 PM CDT | Tornado Warning | DMX | Clarke, Decatur, Lucas, Wayne | 36 min |
| Mar 22, 7:14 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Madison, Polk | 31 min |
| Mar 22, 7:26 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Fayette, Winneshiek | 34 min |
| Mar 22, 7:31 PM CDT | Tornado Warning | DMX | Madison, Warren | 29 min |
| Mar 22, 7:47 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Poweshiek, Tama | 43 min |
| Mar 22, 7:48 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Ringgold, Union | 42 min |
| Mar 22, 8:00 PM CDT | Mesoscale Discussion | SPC | Appanoose, Davis, Des Moines, Henry, Jefferson, Keokuk and 7 more | 60 min |
| Mar 22, 8:01 PM CDT | Severe Thunderstorm Warning | DMX | Madison, Marion, Warren | 44 min |
| Mar 22, 8:09 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Lucas, Marion, Warren | 51 min |
| Mar 22, 8:09 PM CDT | Special Weather Statement | DVN | Buchanan | 66 min |
| Mar 22, 8:29 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Lucas, Wayne | 31 min |
| Mar 22, 8:35 PM CDT | Tornado Watch | SPC | Appanoose, Davis, Henry, Jefferson, Keokuk, Lucas and 7 more | 5 hr |
| Mar 22, 8:41 PM CDT | Tornado Warning | DMX | Decatur, Lucas, Wayne | 34 min |
| Mar 22, 8:42 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Marion, Warren | 33 min |
| Mar 22, 8:49 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Mahaska, Marion, Poweshiek | 41 min |
| Mar 22, 8:58 PM CDT | Severe Thunderstorm Warning | DMX | Decatur, Wayne | 17 min |
| Mar 22, 8:58 PM CDT | Special Weather Statement | DVN | Benton, Iowa, Johnson, Linn | 62 min |
| Mar 22, 9:07 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Marion | 23 min |
| Mar 22, 9:12 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis, Lucas, Monroe, Wapello, Wayne | 48 min |
| Mar 22, 9:15 PM CDT | Tornado Warning | DMX | Mahaska, Poweshiek | 30 min |
| Mar 22, 9:32 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Monroe, Wapello | 43 min |
| Mar 22, 9:38 PM CDT | Special Weather Statement | DVN | Buchanan, Delaware, Iowa, Johnson, Keokuk, Linn and 1 more | 52 min |
| Mar 22, 9:42 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Iowa, Johnson, Keokuk, Linn, Washington | 63 min |
| Mar 22, 9:55 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis, Wapello | 50 min |
| Mar 22, 10:01 PM CDT | Special Weather Statement | DVN | Benton, Buchanan, Delaware, Dubuque, Jones, Linn | 89 min |
| Mar 22, 10:19 PM CDT | Special Weather Statement | DVN | Henry, Jefferson, Lee, Van Buren | 56 min |
| Mar 22, 10:59 PM CDT | Special Weather Statement | DVN | Clinton, Jackson, Louisa, Muscatine, Scott | 61 min |
| Mar 22, 11:14 PM CDT | Severe Thunderstorm Warning | DVN | Louisa, Scott | 61 min |
| Mar 22, 11:21 PM CDT | Mesoscale Discussion | SPC | Des Moines, Lee | 84 min |
| Mar 22, 11:24 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Henry, Lee | 66 min |
| Mar 23, 1:59 PM CDT | River Flood Warning | DMX | Black Hawk, Bremer, Butler | 68 hr |
| Mar 23, 2:47 PM CDT | River Flood Warning | DVN | Dubuque, Jackson | 45 days |
| Mar 23, 2:47 PM CDT | River Flood Warning | DVN | Clinton, Scott | 40 days |
| Mar 23, 2:47 PM CDT | River Flood Warning | DVN | Clinton, Scott | 47 days |
| Mar 23, 2:47 PM CDT | River Flood Warning | DVN | Muscatine, Scott | 41 days |
| Mar 23, 2:47 PM CDT | River Flood Warning | DVN | Muscatine, Scott | 49 days |
| Mar 23, 2:47 PM CDT | River Flood Warning | DVN | Des Moines, Louisa | 51 days |
| Mar 23, 2:47 PM CDT | River Flood Warning | DVN | Des Moines, Louisa | 52 days |
| Mar 23, 2:47 PM CDT | River Flood Warning | DVN | Des Moines | 57 days |
| Mar 23, 2:47 PM CDT | River Flood Warning | DVN | Des Moines, Lee | 57 days |
| Mar 23, 8:30 PM CDT | River Flood Warning | DVN | Cedar, Louisa, Muscatine | 9 days |
| Mar 25, 3:12 AM CDT | Winter Weather Advisory | OAX | Mills, Montgomery, Pottawattamie | 4 hr |
| Mar 25, 8:45 PM CDT | River Flood Warning | DVN | Louisa | 7 days |
| Mar 28, 1:26 PM CDT | River Flood Warning | DVN | Louisa, Muscatine | 43 days |
| Mar 28, 1:26 PM CDT | River Flood Warning | DVN | Louisa, Muscatine | 44 days |
| Mar 31, 11:47 AM CDT | River Flood Warning | DVN | Dubuque, Jackson | 29 days |
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 | 34 |
| Tornado Warning | 20 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 6 |
| Special Weather Statement | 14 |
| Flooding | |
| River Flood Warning | 43 |
| Flood Watch | 1 |
| River Flood Watch | 6 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 3 |
| Winter Weather Advisory | 5 |
| Wind and dust | |
| Wind Advisory | 3 |
| Fog and smoke | |
| Dense Fog Advisory | 7 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Madison County14
- Clay County13
- Louisa County11
- Mahaska County11
- Floyd County10
- Warren County10
- Lyon County10
- Adair County9
- Adams County9
- Audubon County9
- Black Hawk County9
- Cass County9
- Jasper County9
- Polk County9
- Union County9
- Des Moines County9
- Marion County9
- Mitchell County8
- Harrison County8
- Buena Vista County8
- Cerro Gordo County8
- Dallas County8
- Humboldt County8
- Marshall County8
- Ringgold County8
- Worth County8
- Linn County8
- Clarke County8
- Decatur County8
- Lucas County8
- Wayne County8
- Scott County8
- Pottawattamie County7
- Hancock County7
- Kossuth County7
- Taylor County7
- Wright County7
- Clayton County7
- Johnson County7
- Lee County7
59 more counties
- Muscatine County7
- Washington County7
- Wapello County7
- Allamakee County6
- Chickasaw County6
- Winneshiek County6
- Montgomery County6
- Shelby County6
- Carroll County6
- Crawford County6
- Emmet County6
- Greene County6
- Grundy County6
- Guthrie County6
- Palo Alto County6
- Tama County6
- Plymouth County6
- Sioux County6
- Buchanan County6
- Iowa County6
- Keokuk County6
- Dickinson County6
- Appanoose County6
- Davis County6
- Monroe County6
- Poweshiek County6
- Howard County5
- Fremont County5
- Mills County5
- Cherokee County5
- Ida County5
- Woodbury County5
- Bremer County5
- Butler County5
- Pocahontas County5
- Story County5
- Winnebago County5
- Fayette County5
- Benton County5
- Cedar County5
- Dubuque County5
- Henry County5
- Jefferson County5
- Clinton County5
- Monona County4
- Page County4
- Calhoun County4
- Franklin County4
- Sac County4
- Webster County4
- O'Brien County4
- Osceola County4
- Delaware County4
- Jones County4
- Van Buren County4
- Jackson County4
- Boone County3
- Hardin County3
- Hamilton County2
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.