Alert archive / South Dakota / 2011
Weather alerts in South Dakota, April 2011
83 weather alerts in April 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 April 2011. Tap one for its archive.
- Alerts
- 83
- Warnings
- 46
- Watches
- 9
- Advisories
- 25
- Busiest day
- April 10, 201116 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 |
|---|---|---|---|---|
| Apr 1, 8:35 AM CDT | River Flood Warning | ABR | Codington | 35 days |
| Apr 2, 9:36 AM CDT | Areal Flood Warning | ABR | Corson | 55 hr |
| Apr 2, 2:59 PM CDT | Wind Advisory | ABR | Brown, Buffalo, Campbell, Clark, Codington, Corson and 20 more | 44 hr |
| Apr 2, 3:52 PM CDT | Wind Advisory | UNR | Bennett, Butte, Custer, Haakon, Harding, Jackson and 9 more | 33 hr |
| Apr 3, 4:17 AM CDT | Wind Advisory | FSD | Aurora, Beadle, Bon Homme, Brookings, Brule, Charles Mix and 18 more | 36 hr |
| Apr 3, 9:12 AM CDT | River Flood Warning | ABR | Roberts | 49 hr |
| Apr 3, 10:09 AM CDT | River Flood Warning | ABR | Codington | 70 hr |
| Apr 3, 10:09 AM CDT | River Flood Warning | ABR | Codington | 18 days |
| Apr 3, 10:09 AM CDT | River Flood Warning | ABR | Hamlin | 16 days |
| Apr 3, 10:30 AM CDT | River Flood Warning | ABR | Brown | 5 days |
| Apr 3, 2:24 PM CDT | Areal Flood Warning | ABR | Brown | 4 days |
| Apr 4, 10:44 AM CDT | Areal Flood Warning | ABR | Edmunds | 11 days |
| Apr 9, 5:04 AM CDT | Dense Fog Advisory | ABR | Brown, Buffalo, Campbell, Clark, Codington, Corson and 20 more | 5 hr |
| Apr 9, 7:50 AM CDT | Severe Thunderstorm Warning | FSD | Moody | 40 min |
| Apr 9, 5:48 PM CDT | Tornado Watch | SPC | Clay, Lincoln, Turner, Union, Yankton | 7 hr |
| Apr 9, 6:44 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Charles Mix, Douglas, Hutchinson | 46 min |
| Apr 9, 6:57 PM CDT | Mesoscale Discussion | SPC | Aurora, Beadle, Brookings, Davison, Hamlin, Hanson and 7 more | 63 min |
| Apr 9, 7:16 PM CDT | Severe Thunderstorm Warning | FSD | Hutchinson | 29 min |
| Apr 9, 7:38 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Yankton | 26 min |
| Apr 9, 7:42 PM CDT | Severe Thunderstorm Warning | FSD | Davison, Hanson, Hutchinson | 33 min |
| Apr 9, 7:47 PM CDT | Severe Thunderstorm Watch | SPC | Brookings, Davison, Douglas, Hanson, Hutchinson, Kingsbury and 6 more | 3 hr |
| Apr 9, 8:11 PM CDT | Severe Thunderstorm Warning | FSD | Lake, McCook, Miner, Minnehaha | 34 min |
| Apr 9, 8:19 PM CDT | Severe Thunderstorm Warning | FSD | Union | 41 min |
| Apr 9, 8:45 PM CDT | Severe Thunderstorm Warning | FSD | Lake, McCook, Minnehaha, Moody | 45 min |
| Apr 9, 8:55 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Lake, Moody | 50 min |
| Apr 9, 9:06 PM CDT | Mesoscale Discussion | SPC | Clay, Lincoln, Union | 54 min |
| Apr 9, 9:15 PM CDT | Severe Thunderstorm Warning | FSD | Union | 30 min |
| Apr 9, 9:17 PM CDT | Severe Thunderstorm Warning | FSD | Minnehaha, Moody | 43 min |
| Apr 9, 9:17 PM CDT | Severe Thunderstorm Warning | FSD | Union | 43 min |
| Apr 9, 9:31 PM CDT | Tornado Warning | FSD | Union | 29 min |
| Apr 10, 4:50 AM CDT | Wind Advisory | UNR | Butte, Harding, Meade, Pennington, Perkins | 14 hr |
| Apr 10, 2:18 PM CDT | Areal Flood Warning | ABR | Roberts | 48 hr |
| Apr 10, 3:52 PM CDT | Areal Flood Advisory | ABR | Brown | 6 hr |
| Apr 12, 1:48 PM CDT | Red Flag Warning | FSD | 4 hr | |
| Apr 13, 3:19 AM CDT | Winter Storm Watch | FSD | Aurora, Beadle, Brule, Charles Mix, Douglas, Gregory and 1 more | 36 hr |
| Apr 13, 3:42 AM CDT | Winter Storm Watch | ABR | Brown, Buffalo, Campbell, Corson, Dewey, Edmunds and 12 more | 24 hr |
| Apr 13, 5:32 AM CDT | Winter Storm Watch | UNR | Bennett, Butte, Custer, Fall River, Haakon, Harding and 10 more | 24 hr |
| Apr 13, 10:39 AM CDT | Areal Flood Warning | ABR | Spink | 9 days |
| Apr 14, 3:24 AM CDT | Winter Storm Warning | ABR | Brown, Buffalo, Campbell, Clark, Corson, Day and 15 more | 43 hr |
| Apr 14, 3:24 AM CDT | Winter Weather Advisory | ABR | Codington, Corson, Deuel, Dewey, Grant, Hamlin and 1 more | 36 hr |
| Apr 14, 5:07 AM CDT | Winter Storm Warning | UNR | Bennett, Haakon, Jackson, Mellette, Oglala Lakota, Todd and 2 more | 35 hr |
| Apr 14, 5:07 AM CDT | Winter Weather Advisory | UNR | Butte, Custer, Fall River, Harding, Lawrence, Meade and 4 more | 24 hr |
| Apr 14, 3:39 PM CDT | Winter Storm Warning | FSD | Beadle, Brule, Charles Mix, Gregory, Jerauld | 30 hr |
| Apr 14, 3:39 PM CDT | Winter Weather Advisory | FSD | Aurora, Bon Homme, Brookings, Davison, Douglas, Hanson and 5 more | 30 hr |
| Apr 14, 6:19 PM CDT | Mesoscale Discussion | SPC | Mellette, Todd, Tripp | 4 hr |
| Apr 15, 7:13 PM CDT | Winter Storm Warning | ABR | Buffalo, Hand | 3 hr |
| Apr 15, 10:28 PM CDT | Areal Flood Warning | ABR | Hamlin | 24 days |
| Apr 16, 12:20 PM CDT | River Flood Warning | FSD | Turner | 9 days |
| Apr 16, 12:20 PM CDT | River Flood Warning | FSD | Clay | 14 days |
| Apr 18, 3:33 PM CDT | Winter Weather Advisory | ABR | Brown, Campbell, Corson, Dewey, Edmunds, Faulk and 7 more | 30 hr |
| Apr 18, 3:42 PM CDT | Winter Weather Advisory | UNR | Butte, Custer, Haakon, Harding, Lawrence, Meade and 3 more | 24 hr |
| Apr 19, 9:41 AM CDT | Winter Storm Warning | ABR | Campbell, Corson, Dewey, Edmunds, McPherson, Potter and 1 more | 11 hr |
| Apr 19, 10:47 AM CDT | River Flood Warning | ABR | Spink | 20 days |
| Apr 20, 10:33 AM CDT | River Flood Warning | FSD | Davison | 22 hr |
| Apr 21, 3:12 AM CDT | Wind Advisory | ABR | Brown, Buffalo, Campbell, Corson, Dewey, Edmunds and 12 more | 12 hr |
| Apr 21, 3:24 AM CDT | Wind Advisory | FSD | Aurora, Beadle, Bon Homme, Brule, Charles Mix, Davison and 6 more | 12 hr |
| Apr 21, 5:03 AM CDT | Wind Advisory | UNR | Bennett, Haakon, Jackson, Meade, Mellette, Oglala Lakota and 5 more | 10 hr |
| Apr 21, 3:48 PM CDT | High Wind Watch | UNR | Butte, Custer, Lawrence, Meade, Pennington | 13 hr |
| Apr 21, 3:48 PM CDT | Wind Advisory | UNR | Bennett, Custer, Fall River, Haakon, Harding, Jackson and 8 more | 33 hr |
| Apr 21, 3:53 PM CDT | Winter Storm Watch | UNR | Lawrence, Meade, Pennington | 13 hr |
| Apr 21, 8:43 PM CDT | Severe Thunderstorm Warning | UNR | Pennington | 27 min |
| Apr 22, 4:45 AM CDT | High Wind Warning | UNR | Meade, Pennington | 10 hr |
| Apr 22, 4:51 AM CDT | Winter Storm Warning | UNR | Lawrence, Meade, Pennington | 24 hr |
| Apr 22, 4:51 AM CDT | Winter Weather Advisory | UNR | Butte, Custer, Harding, Lawrence, Pennington, Perkins | 24 hr |
| Apr 22, 9:12 AM CDT | River Flood Warning | ABR | Codington | 24 hr |
| Apr 22, 10:31 AM CDT | Areal Flood Warning | ABR | Edmunds | 24 hr |
| Apr 22, 2:48 PM CDT | High Wind Warning | UNR | Bennett, Custer, Fall River, Jackson, Mellette, Oglala Lakota and 2 more | 5 hr |
| Apr 22, 7:33 PM CDT | Wind Advisory | ABR | Hughes, Jones, Lyman, Stanley | 5 hr |
| Apr 23, 11:22 AM CDT | River Flood Warning | FSD | Clay | 23 hr |
| Apr 26, 2:52 PM CDT | Winter Storm Warning | UNR | Custer, Lawrence, Meade, Pennington | 7 hr |
| Apr 26, 10:04 PM CDT | Winter Weather Advisory | UNR | Custer, Lawrence, Meade, Pennington | 10 hr |
| Apr 29, 3:12 AM CDT | Wind Advisory | FSD | Aurora, Beadle, Bon Homme, Brookings, Brule, Charles Mix and 17 more | 16 hr |
| Apr 29, 4:07 AM CDT | Wind Advisory | ABR | Brown, Buffalo, Clark, Codington, Day, Deuel and 13 more | 15 hr |
| Apr 29, 12:01 PM CDT | Wind Advisory | UNR | Butte, Custer, Meade, Pennington | 7 hr |
| Apr 29, 3:29 PM CDT | High Wind Watch | ABR | Buffalo, Campbell, Corson, Dewey, Edmunds, Faulk and 9 more | 13 hr |
| Apr 29, 4:22 PM CDT | High Wind Watch | UNR | Bennett, Butte, Custer, Haakon, Harding, Jackson and 9 more | 11 hr |
| Apr 29, 9:11 PM CDT | Wind Advisory | FSD | Aurora, Beadle, Bon Homme, Brookings, Brule, Charles Mix and 18 more | 28 hr |
| Apr 30, 3:13 AM CDT | High Wind Warning | FSD | Beadle, Brule, Jerauld | 19 hr |
| Apr 30, 3:44 AM CDT | High Wind Warning | UNR | Bennett, Butte, Custer, Haakon, Harding, Jackson and 9 more | 16 hr |
| Apr 30, 3:44 AM CDT | Wind Advisory | UNR | Bennett, Jackson, Mellette, Oglala Lakota, Todd, Tripp | 6 hr |
| Apr 30, 4:14 AM CDT | High Wind Warning | ABR | Buffalo, Campbell, Corson, Dewey, Edmunds, Faulk and 10 more | 18 hr |
| Apr 30, 4:14 AM CDT | Wind Advisory | ABR | Brown, Buffalo, Campbell, Clark, Codington, Corson and 20 more | 39 hr |
| Apr 30, 11:10 AM CDT | Wind Advisory | UNR | Fall River | 9 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 Warning | 13 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 1 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 3 |
| Flooding | |
| Areal Flood Warning | 7 |
| River Flood Warning | 12 |
| Areal Flood Advisory | 1 |
| Winter | |
| Winter Storm Warning | 7 |
| Winter Storm Watch | 4 |
| Winter Weather Advisory | 7 |
| Wind and dust | |
| High Wind Warning | 5 |
| High Wind Watch | 3 |
| Wind Advisory | 16 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Pennington County18
- Meade County16
- Edmunds County13
- Custer County13
- Corson County12
- Lawrence County12
- Brown County11
- Dewey County11
- Hughes County11
- McPherson County11
- Potter County11
- Buffalo County10
- Campbell County10
- Faulk County10
- Hyde County10
- Stanley County10
- Sully County10
- Walworth County10
- Butte County10
- Mellette County10
- Oglala Lakota County10
- Perkins County10
- Todd County10
- Tripp County10
- Codington County9
- Hand County9
- Jones County9
- Lyman County9
- Spink County9
- Bennett County9
- Harding County9
- Jackson County9
- Ziebach County9
- Davison County9
- Hutchinson County9
- Lake County9
- Moody County9
- Union County9
- Hamlin County8
- Haakon County8
26 more counties
- Beadle County8
- Clay County8
- Douglas County8
- Hanson County8
- Minnehaha County8
- Roberts County7
- Aurora County7
- Brookings County7
- Brule County7
- Charles Mix County7
- Jerauld County7
- McCook County7
- Miner County7
- Sanborn County7
- Bon Homme County6
- Kingsbury County6
- Clark County5
- Day County5
- Deuel County5
- Grant County5
- Marshall County5
- Gregory County5
- Lincoln County5
- Turner County5
- Yankton County5
- Fall River County5
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. Warning verification from the Mesonet's Cow. Rebuilt daily.