Alert archive / South Dakota / Severe Thunderstorm Watches in 2013
Severe Thunderstorm Watch 341
The Storm Prediction Center issued this severe thunderstorm watch at Jun 21, 2013, 9:07 PM CDT for 4 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 21, 2013, 9:07 PM CDT (02:07 UTC)
- Expired
- Jun 22, 2013, 2:11 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2.5 in
- Strongest gust expected
- 60 kt
All 55 counties
Dickinson County, IA, Lyon County, IA, O'Brien County, IA, Osceola County, IA, Plymouth County, IA, Sioux County, IA, Cottonwood County, MN, Jackson County, MN, Lincoln County, MN, Lyon County, MN, Murray County, MN, Nobles County, MN, Pipestone County, MN, Rock County, MN, Antelope County, NE, Blaine County, NE, Boone County, NE, Boyd County, NE, Cedar County, NE, Custer County, NE, Dixon County, NE, Garfield County, NE, Holt County, NE, Knox County, NE, Loup County, NE, Madison County, NE, Pierce County, NE, Rock County, NE, Wheeler County, NE, Aurora County, SD, Beadle County, SD, Bon Homme County, SD, Brookings County, SD, Brule County, SD, Buffalo County, SD, Charles Mix County, SD, Clay County, SD, Davison County, SD, Douglas County, SD, Gregory County, SD, Hanson County, SD, Hutchinson County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, Lincoln County, SD, Lyman County, SD, McCook County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Sanborn County, SD, Turner County, SD, Union County, SD, Yankton County, SD
The radar
The Sioux Falls radar (KFSD), 130 km from the middle of the area, began a volume at 02:08 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 10%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
26 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 9:08 PM CDT | Severe Thunderstorm Warning | LBF | Custer, Logan | 52 min |
| Jun 21, 9:11 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Yankton | 49 min |
| Jun 21, 9:18 PM CDT | Severe Thunderstorm Warning | FSD | Lyon | 42 min |
| Jun 21, 9:26 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Lyon, Murray, Pipestone | 49 min |
| Jun 21, 9:44 PM CDT | Severe Thunderstorm Warning | LBF | Blaine, Custer, Lincoln, Loup | 46 min |
| Jun 21, 9:48 PM CDT | Severe Thunderstorm Warning | LBF | Rock | 42 min |
| Jun 21, 9:57 PM CDT | Severe Thunderstorm Warning | FSD | McCook, Minnehaha, Turner | 48 min |
| Jun 21, 9:57 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Yankton | 33 min |
| Jun 21, 10:10 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, Murray | 50 min |
| Jun 21, 10:12 PM CDT | Severe Thunderstorm Warning | FSD | Lake, McCook, Minnehaha | 48 min |
| Jun 21, 10:18 PM CDT | Severe Thunderstorm Warning | LBF | Brown, Keya Paha, Rock | 27 min |
| Jun 21, 10:22 PM CDT | Severe Thunderstorm Warning | LBF | Custer | 38 min |
| Jun 21, 10:38 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Pipestone | 37 min |
| Jun 21, 10:46 PM CDT | Severe Thunderstorm Warning | FSD | Minnehaha, Turner | 44 min |
| Jun 21, 10:49 PM CDT | Severe Thunderstorm Warning | FSD | Gregory | 41 min |
| Jun 21, 10:59 PM CDT | Severe Thunderstorm Warning | LBF | Custer | 46 min |
| Jun 21, 11:03 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Douglas, Gregory | 42 min |
| Jun 21, 11:16 PM CDT | Severe Thunderstorm Warning | LBF | Garfield, Wheeler | 44 min |
| Jun 21, 11:19 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Gregory | 41 min |
| Jun 21, 11:23 PM CDT | Severe Thunderstorm Warning | FSD | Cottonwood | 37 min |
| Jun 21, 11:26 PM CDT | Severe Thunderstorm Warning | FSD | Brule, Charles Mix, Gregory | 49 min |
| Jun 21, 11:52 PM CDT | Severe Thunderstorm Warning | FSD | Douglas, Hutchinson | 53 min |
| Jun 21, 11:59 PM CDT | Flash Flood Warning | FSD | Jackson | 6 hr |
| Jun 22, 12:03 AM CDT | Severe Thunderstorm Warning | FSD | Cottonwood, Jackson | 42 min |
| Jun 22, 12:40 AM CDT | Severe Thunderstorm Warning | FSD | Dickinson, Lyon, Osceola | 65 min |
| Jun 22, 12:52 AM CDT | Flash Flood Warning | FSD | Cottonwood, Jackson, Murray, Nobles | 5 hr |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 2.1 hours before the alert went out and 169 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 15 J/kg
- Mixed-layer CIN
- -691 J/kg
- Mixed-layer LCL
- 2268 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- 73 m²/s²
- 0-3 km storm-relative helicity
- 98 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 7:09 PM CDT | Mesoscale Discussion | SPC | Clay, Dickinson, Lyon, O'Brien, Osceola, Sioux | 66 min |
| Jun 22, 2:33 AM CDT | Mesoscale Discussion | SPC | Allamakee, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 11 more | 87 min |
| Jun 22, 4:59 PM CDT | Mesoscale Discussion | SPC | Allamakee, Bremer, Chickasaw, Clayton, Delaware, Dubuque and 5 more | 2 hr |
| Jun 21, 8:56 PM CDT | Mesoscale Discussion | SPC | Lincoln, Lyon, Murray, Nobles, Pipestone, Rock and 1 more | 94 min |
| Jun 21, 11:15 PM CDT | Mesoscale Discussion | SPC | Anoka, Blue Earth, Brown, Carver, Chippewa, Chisago and 27 more | 60 min |
| Jun 21, 9:39 PM CDT | Mesoscale Discussion | SPC | Banner, Box Butte, Cheyenne, Dawes, Deuel, Garden and 5 more | 36 min |
| Jun 21, 10:25 PM CDT | Severe Thunderstorm Watch | SPC | Buffalo, Dawson, Gosper, Greeley, Hall, Hamilton and 7 more | 3 hr |
| Jun 22, 12:42 AM CDT | Mesoscale Discussion | SPC | Arthur, Blaine, Brown, Cherry, Custer, Grant and 7 more | 93 min |
| Jun 22, 2:45 PM CDT | Mesoscale Discussion | SPC | Banner, Box Butte, Dawes, Garden, Morrill, Scotts Bluff and 2 more | 90 min |
| Jun 22, 3:13 PM CDT | Tornado Watch | SPC | Banner, Box Butte, Cheyenne, Dawes, Deuel, Garden and 5 more | 6 hr |
| Jun 22, 3:34 PM CDT | Mesoscale Discussion | SPC | Adams, Blaine, Brown, Buffalo, Custer, Dawson and 15 more | 56 min |
| Jun 22, 5:00 PM CDT | Mesoscale Discussion | SPC | Chase, Cheyenne, Custer, Dawson, Deuel, Dundy and 7 more | 90 min |
| Jun 22, 5:18 PM CDT | Tornado Watch | SPC | Dundy | 7 hr |
| Jun 22, 5:56 PM CDT | Tornado Watch | SPC | Adams, Antelope, Arthur, Blaine, Boone, Buffalo and 52 more | 7 hr |
Nearby
Severe Thunderstorm Watches in South Dakota, 2013Severe Thunderstorm Watches in Nebraska, 2013Severe Thunderstorm Watches in Minnesota, 2013Every severe thunderstorm watch in 2013
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.