Alert archive / South Dakota / Severe Thunderstorm Watches in 2016
Severe Thunderstorm Watch 437
The Storm Prediction Center issued this severe thunderstorm watch at Aug 9, 2016, 10:19 PM CDT for 14 counties in Minnesota; 12 counties in North Dakota; 16 counties in South Dakota. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 9, 2016, 10:19 PM CDT (03:19 UTC)
- Expired
- Aug 10, 2016, 6:00 AM CDT
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2.5 in
- Strongest gust expected
- 60 kt
All 42 counties
Big Stone County, MN, Chippewa County, MN, Clay County, MN, Douglas County, MN, Grant County, MN, Lac qui Parle County, MN, Otter Tail County, MN, Pope County, MN, Stevens County, MN, Swift County, MN, Traverse County, MN, Wadena County, MN, Wilkin County, MN, Yellow Medicine County, MN, Barnes County, ND, Cass County, ND, Dickey County, ND, Emmons County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Stutsman County, ND, Brown County, SD, Campbell County, SD, Clark County, SD, Codington County, SD, Day County, SD, Deuel County, SD, Edmunds County, SD, Faulk County, SD, Grant County, SD, Hamlin County, SD, Marshall County, SD, McPherson County, SD, Potter County, SD, Roberts County, SD, Spink County, SD, Walworth County, SD
The radar
The Aberdeen radar (KABR), 72 km from the middle of the area, began a volume at 03:21 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
- 5%
- Ten or more severe wind reports
- 40%
- 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
- 70%
Warnings issued inside it
27 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 10:40 PM CDT | Severe Thunderstorm Warning | BIS | Kidder, Stutsman | 35 min |
| Aug 9, 10:53 PM CDT | Severe Thunderstorm Warning | ABR | Campbell, McPherson | 52 min |
| Aug 9, 11:09 PM CDT | Tornado Warning | ABR | Campbell, McPherson | 51 min |
| Aug 9, 11:43 PM CDT | Severe Thunderstorm Warning | BIS | Emmons, McIntosh | 62 min |
| Aug 9, 11:43 PM CDT | Severe Thunderstorm Warning | BIS | Burleigh, Emmons, Grant, Kidder, Logan, Morton and 1 more | 62 min |
| Aug 9, 11:43 PM CDT | Severe Thunderstorm Warning | ABR | Campbell, Corson, Dewey, Walworth | 47 min |
| Aug 9, 11:45 PM CDT | Severe Thunderstorm Warning | ABR | Campbell, McPherson | 45 min |
| Aug 9, 11:54 PM CDT | Tornado Warning | ABR | Campbell, McPherson | 41 min |
| Aug 10, 12:17 AM CDT | Severe Thunderstorm Warning | ABR | Campbell, Corson, Dewey, Edmunds, Faulk, McPherson and 2 more | 43 min |
| Aug 10, 12:33 AM CDT | Severe Thunderstorm Warning | ABR | McPherson | 42 min |
| Aug 10, 12:42 AM CDT | Severe Thunderstorm Warning | BIS | Dickey, Emmons, Kidder, LaMoure, Logan, McIntosh and 1 more | 63 min |
| Aug 10, 12:53 AM CDT | Severe Thunderstorm Warning | ABR | Campbell, Edmunds, McPherson, Walworth | 67 min |
| Aug 10, 1:19 AM CDT | Severe Thunderstorm Warning | ABR | Campbell, Dewey, Walworth | 41 min |
| Aug 10, 1:34 AM CDT | Severe Thunderstorm Warning | ABR | Brown, Edmunds, McPherson | 56 min |
| Aug 10, 1:37 AM CDT | Severe Thunderstorm Warning | BIS | Dickey | 53 min |
| Aug 10, 1:53 AM CDT | Severe Thunderstorm Warning | ABR | Edmunds, Walworth | 40 min |
| Aug 10, 2:05 AM CDT | Severe Thunderstorm Warning | ABR | Brown, Edmunds | 40 min |
| Aug 10, 2:11 AM CDT | Severe Thunderstorm Warning | FGF | Richland, Sargent | 64 min |
| Aug 10, 2:18 AM CDT | Severe Thunderstorm Warning | ABR | Brown, Day, Grant, Marshall, Roberts, Spink | 57 min |
| Aug 10, 2:40 AM CDT | Tornado Warning | ABR | Marshall, Roberts | 35 min |
| Aug 10, 3:06 AM CDT | Severe Thunderstorm Warning | ABR | Traverse | 54 min |
| Aug 10, 3:09 AM CDT | Severe Thunderstorm Warning | FGF | Grant, Otter Tail, Wilkin | 66 min |
| Aug 10, 3:46 AM CDT | Severe Thunderstorm Warning | MPX | Stevens | 44 min |
| Aug 10, 3:55 AM CDT | Severe Thunderstorm Warning | FGF | Grant, Otter Tail, Wilkin | 65 min |
| Aug 10, 4:06 AM CDT | Severe Thunderstorm Warning | MPX | Douglas, Pope | 39 min |
| Aug 10, 4:28 AM CDT | Severe Thunderstorm Warning | MPX | Stevens, Swift | 32 min |
| Aug 10, 4:47 AM CDT | Severe Thunderstorm Warning | MPX | Douglas, Pope, Stearns, Swift, Todd | 43 min |
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, 3.3 hours before the alert went out and 133 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
- 12 J/kg
- Mixed-layer CIN
- -422 J/kg
- Mixed-layer LCL
- 2672 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 129 m²/s²
- 0-3 km storm-relative helicity
- 319 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 |
|---|---|---|---|---|
| Aug 10, 1:05 AM CDT | Mesoscale Discussion | SPC | Big Stone, Lac qui Parle, Swift, Traverse | 55 min |
| Aug 10, 3:30 AM CDT | Mesoscale Discussion | SPC | Anoka, Benton, Big Stone, Chisago, Douglas, Grant and 20 more | 60 min |
| Aug 10, 4:02 AM CDT | Severe Thunderstorm Watch | SPC | Aitkin, Benton, Cass, Chisago, Crow Wing, Isanti and 7 more | 4 hr |
| Aug 10, 11:19 AM CDT | Mesoscale Discussion | SPC | Becker, Clay, Otter Tail, Wilkin | 2 hr |
| Aug 10, 1:15 PM CDT | Severe Thunderstorm Watch | SPC | Becker, Big Stone, Clay, Douglas, Grant, Lac qui Parle and 8 more | 7 hr |
| Aug 10, 3:45 PM CDT | Mesoscale Discussion | SPC | Becker, Big Stone, Cass, Chippewa, Clay, Crow Wing and 14 more | 2 hr |
| Aug 10, 3:52 PM CDT | Mesoscale Discussion | SPC | Jackson | 113 min |
| Aug 10, 4:04 PM CDT | Mesoscale Discussion | SPC | Anoka, Benton, Carver, Chisago, Hennepin, Isanti and 13 more | 26 min |
| Aug 10, 4:20 PM CDT | Severe Thunderstorm Watch | SPC | Aitkin, Anoka, Benton, Carlton, Carver, Cass and 17 more | 5 hr |
| Aug 10, 6:54 PM CDT | Mesoscale Discussion | SPC | Aitkin, Anoka, Benton, Carlton, Cass, Chisago and 15 more | 66 min |
| Aug 9, 7:30 PM CDT | Mesoscale Discussion | SPC | Adams, Bowman, Sioux | 2 hr |
| Aug 9, 9:51 PM CDT | Mesoscale Discussion | SPC | Adams, Dickey, Emmons, Grant, LaMoure, Logan and 4 more | 114 min |
| Aug 10, 3:53 PM CDT | Mesoscale Discussion | SPC | Billings, Divide, Golden Valley, McKenzie, Williams | 97 min |
| Aug 10, 5:59 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Benson, Billings, Bottineau, Burke, Burleigh and 31 more | 7 hr |
| Aug 10, 3:49 PM CDT | Mesoscale Discussion | SPC | Bennett, Dewey, Haakon, Hughes, Jackson, Jones and 7 more | 56 min |
| Aug 10, 5:18 PM CDT | Mesoscale Discussion | SPC | Bennett, Butte, Custer, Fall River, Harding, Jackson and 5 more | 57 min |
Nearby
Severe Thunderstorm Watches in South Dakota, 2016Severe Thunderstorm Watches in Minnesota, 2016Severe Thunderstorm Watches in North Dakota, 2016Every severe thunderstorm watch in 2016
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.