Alert archive / South Dakota / 1999
Weather alerts in South Dakota, May 1999
110 weather alerts in May 1999, 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 May 1999. Tap one for its archive.
- Alerts
- 110
- Warnings
- 100
- Watches
- 10
- Advisories
- 0
- Busiest day
- May 10, 199933 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 |
|---|---|---|---|---|
| May 3, 5:49 PM CDT | Severe Thunderstorm Warning | ABR | Dewey | 46 min |
| May 3, 6:15 PM CDT | Severe Thunderstorm Watch | SPC | Bennett, Brown, Buffalo, Campbell, Dewey, Edmunds and 16 more | 5 hr |
| May 3, 7:34 PM CDT | Flash Flood Warning | ABR | Dewey | 3 hr |
| May 3, 9:00 PM CDT | Severe Thunderstorm Watch | SPC | Aurora, Beadle, Bon Homme, Brookings, Charles Mix, Clay and 17 more | 5 hr |
| May 3, 9:11 PM CDT | Severe Thunderstorm Warning | FSD | Gregory | 34 min |
| May 3, 9:23 PM CDT | Severe Thunderstorm Warning | FSD | Yankton | 32 min |
| May 3, 9:40 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Charles Mix | 50 min |
| May 3, 9:49 PM CDT | Tornado Warning | FSD | Yankton | 31 min |
| May 3, 9:54 PM CDT | Severe Thunderstorm Warning | FSD | Gregory | 36 min |
| May 3, 10:11 PM CDT | Severe Thunderstorm Warning | FSD | Clay | 34 min |
| May 3, 10:22 PM CDT | Severe Thunderstorm Warning | FSD | Hutchinson, Yankton | 38 min |
| May 3, 10:27 PM CDT | Tornado Warning | FSD | Clay | 33 min |
| May 3, 10:33 PM CDT | Severe Thunderstorm Warning | FSD | Douglas | 47 min |
| May 3, 10:46 PM CDT | Tornado Warning | FSD | Clay | 34 min |
| May 3, 10:56 PM CDT | Severe Thunderstorm Warning | ABR | Campbell | 64 min |
| May 3, 11:00 PM CDT | Severe Thunderstorm Warning | FSD | Turner | 35 min |
| May 3, 11:47 PM CDT | Severe Thunderstorm Warning | FSD | Minnehaha | 33 min |
| May 9, 4:30 PM CDT | Tornado Watch | SPC | Aurora, Bennett, Brule, Charles Mix, Davison, Douglas and 5 more | 6 hr |
| May 9, 5:27 PM CDT | Severe Thunderstorm Warning | ABR | Marshall | 33 min |
| May 9, 5:53 PM CDT | Severe Thunderstorm Warning | ABR | Codington, Grant | 32 min |
| May 9, 6:25 PM CDT | Severe Thunderstorm Warning | ABR | Grant, Roberts | 45 min |
| May 9, 7:00 PM CDT | Severe Thunderstorm Warning | UNR | Bennett | 50 min |
| May 9, 7:13 PM CDT | Severe Thunderstorm Warning | UNR | Jackson | 47 min |
| May 9, 7:21 PM CDT | Severe Thunderstorm Warning | ABR | Roberts | 34 min |
| May 9, 7:25 PM CDT | Severe Thunderstorm Warning | UNR | Tripp | 50 min |
| May 9, 7:32 PM CDT | Tornado Warning | UNR | Tripp | 33 min |
| May 9, 7:39 PM CDT | Tornado Warning | UNR | Mellette | 31 min |
| May 9, 7:40 PM CDT | Tornado Warning | ABR | Lyman | 65 min |
| May 9, 7:47 PM CDT | Severe Thunderstorm Warning | UNR | Mellette, Todd | 63 min |
| May 9, 7:55 PM CDT | Tornado Warning | UNR | Mellette, Todd | 50 min |
| May 9, 8:19 PM CDT | Tornado Warning | UNR | Mellette | 61 min |
| May 9, 8:37 PM CDT | Severe Thunderstorm Warning | ABR | Hughes, Sully | 33 min |
| May 9, 8:38 PM CDT | Severe Thunderstorm Warning | UNR | Tripp | 47 min |
| May 9, 8:44 PM CDT | Severe Thunderstorm Warning | ABR | Hughes, Lyman, Stanley | 46 min |
| May 9, 8:49 PM CDT | Tornado Warning | UNR | Todd | 46 min |
| May 9, 9:05 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 35 min |
| May 9, 9:16 PM CDT | Flash Flood Warning | ABR | Lyman | 6 hr |
| May 9, 9:26 PM CDT | Tornado Warning | ABR | Lyman | 49 min |
| May 9, 9:31 PM CDT | Tornado Warning | UNR | Todd | 34 min |
| May 9, 9:43 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo | 32 min |
| May 9, 9:56 PM CDT | Flash Flood Warning | UNR | Mellette, Todd | 4 hr |
| May 9, 10:00 PM CDT | Severe Thunderstorm Watch | SPC | Aurora, Beadle, Bennett, Brookings, Brule, Buffalo and 29 more | 6 hr |
| May 9, 10:04 PM CDT | Severe Thunderstorm Warning | UNR | Todd | 66 min |
| May 9, 10:17 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Hand, Hyde | 48 min |
| May 9, 10:17 PM CDT | Severe Thunderstorm Warning | ABR | Lyman | 48 min |
| May 9, 10:42 PM CDT | Severe Thunderstorm Warning | FSD | Brule | 33 min |
| May 9, 11:11 PM CDT | Flash Flood Warning | UNR | Tripp | 4 hr |
| May 10, 1:56 AM CDT | Severe Thunderstorm Warning | FSD | Gregory | 34 min |
| May 10, 2:23 AM CDT | Flash Flood Warning | UNR | Tripp | 6 hr |
| May 10, 2:28 AM CDT | Severe Thunderstorm Warning | FSD | Charles Mix | 37 min |
| May 10, 2:45 AM CDT | Severe Thunderstorm Warning | FSD | Gregory | 35 min |
| May 10, 3:02 AM CDT | Severe Thunderstorm Warning | FSD | Charles Mix | 18 min |
| May 10, 3:20 AM CDT | Severe Thunderstorm Warning | FSD | Brule, Charles Mix | 35 min |
| May 10, 3:27 AM CDT | Severe Thunderstorm Warning | FSD | Aurora | 33 min |
| May 13, 5:15 PM CDT | Severe Thunderstorm Watch | SPC | Bennett, Haakon, Jackson, Jones, Mellette, Oglala Lakota and 2 more | 6 hr |
| May 13, 6:07 PM CDT | Severe Thunderstorm Warning | UNR | Haakon | 63 min |
| May 13, 6:48 PM CDT | Severe Thunderstorm Warning | UNR | Bennett | 62 min |
| May 15, 4:00 PM CDT | Severe Thunderstorm Watch | SPC | Butte, Custer, Fall River, Harding, Lawrence, Meade and 3 more | 6 hr |
| May 15, 4:41 PM CDT | Severe Thunderstorm Warning | UNR | Pennington | 49 min |
| May 15, 5:31 PM CDT | Severe Thunderstorm Warning | UNR | Pennington | 49 min |
| May 15, 5:46 PM CDT | Tornado Warning | UNR | Butte | 49 min |
| May 15, 6:02 PM CDT | Severe Thunderstorm Warning | UNR | Meade | 48 min |
| May 15, 11:47 PM CDT | Severe Thunderstorm Warning | ABR | Deuel | 48 min |
| May 16, 6:00 AM CDT | Severe Thunderstorm Watch | SPC | Bon Homme, Clay, Douglas, Hutchinson, Lincoln, Turner and 2 more | 5 hr |
| May 16, 8:28 AM CDT | Severe Thunderstorm Warning | FSD | Clay, Yankton | 32 min |
| May 16, 8:57 AM CDT | Severe Thunderstorm Warning | FSD | Clay, Union | 33 min |
| May 20, 1:12 AM CDT | Severe Thunderstorm Warning | UNR | Todd | 43 min |
| May 21, 2:53 PM CDT | Severe Thunderstorm Warning | UNR | Meade | 47 min |
| May 21, 3:00 PM CDT | Severe Thunderstorm Watch | SPC | Butte, Corson, Custer, Fall River, Haakon, Harding and 6 more | 6 hr |
| May 21, 3:36 PM CDT | Severe Thunderstorm Warning | UNR | Meade | 29 min |
| May 21, 4:03 PM CDT | Severe Thunderstorm Warning | UNR | Harding | 62 min |
| May 21, 4:07 PM CDT | Severe Thunderstorm Warning | UNR | Meade | 63 min |
| May 21, 4:19 PM CDT | Severe Thunderstorm Warning | UNR | Pennington | 46 min |
| May 21, 5:04 PM CDT | Severe Thunderstorm Warning | UNR | Meade, Pennington | 61 min |
| May 21, 5:12 PM CDT | Tornado Warning | UNR | Meade, Pennington | 28 min |
| May 21, 5:22 PM CDT | Severe Thunderstorm Warning | UNR | Harding | 48 min |
| May 21, 5:43 PM CDT | Severe Thunderstorm Warning | UNR | Custer | 62 min |
| May 21, 6:07 PM CDT | Severe Thunderstorm Warning | UNR | Pennington | 63 min |
| May 21, 6:11 PM CDT | Severe Thunderstorm Warning | UNR | Butte, Perkins | 64 min |
| May 21, 6:19 PM CDT | Severe Thunderstorm Warning | UNR | Pennington | 66 min |
| May 21, 6:34 PM CDT | Tornado Warning | UNR | Pennington | 36 min |
| May 21, 6:46 PM CDT | Severe Thunderstorm Warning | UNR | Custer | 64 min |
| May 21, 6:51 PM CDT | Tornado Warning | UNR | Fall River | 34 min |
| May 21, 7:01 PM CDT | Severe Thunderstorm Warning | UNR | Pennington | 59 min |
| May 22, 7:17 AM CDT | Severe Thunderstorm Warning | UNR | Custer | 48 min |
| May 22, 8:07 AM CDT | Severe Thunderstorm Warning | UNR | Custer | 63 min |
| May 22, 8:13 AM CDT | Severe Thunderstorm Warning | UNR | 62 min | |
| May 22, 11:12 AM CDT | Severe Thunderstorm Warning | UNR | Tripp | 58 min |
| May 22, 11:39 AM CDT | Severe Thunderstorm Warning | FSD | Gregory | 51 min |
| May 22, 11:45 AM CDT | Severe Thunderstorm Warning | ABR | Lyman | 20 min |
| May 22, 11:55 AM CDT | Severe Thunderstorm Warning | UNR | Todd | 60 min |
| May 22, 12:06 PM CDT | Severe Thunderstorm Warning | ABR | Lyman | 19 min |
| May 22, 2:00 PM CDT | Severe Thunderstorm Watch | SPC | Bon Homme, Charles Mix, Clay, Douglas, Gregory, Hutchinson and 5 more | 7 hr |
| May 22, 2:14 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Douglas | 46 min |
| May 22, 2:20 PM CDT | Severe Thunderstorm Warning | UNR | Tripp | 40 min |
| May 22, 2:49 PM CDT | Severe Thunderstorm Warning | FSD | Hutchinson | 41 min |
| May 22, 5:07 PM CDT | Tornado Warning | FSD | Union | 38 min |
| May 26, 3:49 PM CDT | Severe Thunderstorm Warning | UNR | Lawrence | 31 min |
| May 26, 4:45 PM CDT | Severe Thunderstorm Warning | UNR | Meade | 35 min |
| May 26, 5:25 PM CDT | Severe Thunderstorm Warning | UNR | Butte | 50 min |
| May 26, 5:40 PM CDT | Severe Thunderstorm Warning | UNR | Meade | 50 min |
| May 26, 6:25 PM CDT | Severe Thunderstorm Warning | UNR | Ziebach | 35 min |
| May 26, 6:29 PM CDT | Severe Thunderstorm Warning | UNR | Perkins | 51 min |
| May 26, 7:06 PM CDT | Severe Thunderstorm Warning | UNR | Meade | 49 min |
| May 29, 5:30 PM CDT | Severe Thunderstorm Watch | SPC | Bennett, Butte, Custer, Fall River, Haakon, Harding and 7 more | 6 hr |
| May 30, 1:35 PM CDT | Severe Thunderstorm Warning | FSD | Minnehaha, Turner | 30 min |
| May 30, 2:05 PM CDT | Severe Thunderstorm Warning | FSD | Minnehaha | 30 min |
| May 30, 2:29 PM CDT | Severe Thunderstorm Warning | ABR | Roberts | 36 min |
| May 30, 2:52 PM CDT | Severe Thunderstorm Warning | FSD | Lake, Moody | 33 min |
| May 30, 2:57 PM CDT | Severe Thunderstorm Warning | FSD | Brookings | 33 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 | 79 |
| Tornado Warning | 16 |
| Severe Thunderstorm Watch | 9 |
| Tornado Watch | 1 |
| Flooding | |
| Flash Flood Warning | 5 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Pennington County13
- Todd County12
- Meade County12
- Tripp County11
- Lyman County9
- Mellette County9
- Charles Mix County9
- Clay County8
- Gregory County8
- Custer County8
- Bennett County7
- Douglas County7
- Yankton County7
- Butte County6
- Haakon County5
- Jackson County5
- Hutchinson County5
- Turner County5
- Union County5
- Oglala Lakota County5
- Harding County5
- Perkins County5
- Buffalo County4
- Hand County4
- Hughes County4
- Aurora County4
- Bon Homme County4
- Minnehaha County4
- Brule County4
- Roberts County4
- Fall River County4
- Lawrence County4
- Dewey County3
- Hyde County3
- Jones County3
- Stanley County3
- Brookings County3
- Davison County3
- Lake County3
- Lincoln County3
26 more counties
- Moody County3
- Grant County3
- Ziebach County3
- Campbell County2
- Sully County2
- Beadle County2
- Hanson County2
- Jerauld County2
- Kingsbury County2
- McCook County2
- Miner County2
- Sanborn County2
- Codington County2
- Deuel County2
- Brown County1
- Edmunds County1
- Faulk County1
- McPherson County1
- Potter County1
- Walworth County1
- Marshall County1
- Clark County1
- Day County1
- Hamlin County1
- Spink County1
- Corson County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive19982000
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.