Alert archive / South Dakota / Severe Thunderstorm Watches in 2016

Severe Thunderstorm Watch 231

May 30, 20169 counties in Minnesota; 25 counties in North Dakota; 51 counties in South Dakota

The Storm Prediction Center issued this severe thunderstorm watch at May 30, 2016, 2:48 PM CDT for 9 counties in Minnesota; 25 counties in North Dakota; 51 counties in South Dakota. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
May 30, 2016, 2:48 PM CDT (19:48 UTC)
Expired
May 30, 2016, 10:00 PM CDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 85 counties

Big Stone County, MN, Clay County, MN, Mahnomen County, MN, Norman County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Traverse County, MN, Wilkin County, MN, Barnes County, ND, Burleigh County, ND, Cass County, ND, Dickey County, ND, Eddy County, ND, Emmons County, ND, Foster County, ND, Grand Forks County, ND, Grant County, ND, Griggs County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Morton County, ND, Nelson County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Sheridan County, ND, Sioux County, ND, Steele County, ND, Stutsman County, ND, Traill County, ND, Wells County, ND, Aurora County, SD, Beadle County, SD, Bennett County, SD, Bon Homme County, SD, Brown County, SD, Brule County, SD, Buffalo County, SD, Campbell County, SD, Charles Mix County, SD, Clark County, SD, Codington County, SD, Corson County, SD, Davison County, SD, Day County, SD, Deuel County, SD, Dewey County, SD, Douglas County, SD, Edmunds County, SD, Faulk County, SD, Grant County, SD, Gregory County, SD, Haakon County, SD, Hamlin County, SD, Hand County, SD, Hanson County, SD, Hughes County, SD, Hutchinson County, SD, Hyde County, SD, Jackson County, SD, Jerauld County, SD, Jones County, SD, Kingsbury County, SD, Lyman County, SD, Marshall County, SD, McCook County, SD, McPherson County, SD, Meade County, SD, Mellette County, SD, Miner County, SD, Pennington County, SD, Perkins County, SD, Potter County, SD, Roberts County, SD, Sanborn County, SD, Spink County, SD, Stanley County, SD, Sully County, SD, Todd County, SD, Tripp County, SD, Walworth County, SD, Ziebach County, SD

The radar

The Aberdeen radar (KABR), 116 km from the middle of the area, began a volume at 19:51 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
20%
One or more EF2 to EF5 tornadoes
2%
Ten or more severe wind reports
40%
One or more gusts of 65 knots or more
10%
Ten or more severe hail reports
70%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
95%

Warnings issued inside it

30 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
May 30, 2:55 PM CDTSevere Thunderstorm WarningABRCampbell, Corson, Dewey, McPherson, Walworth50 min
May 30, 3:11 PM CDTSevere Thunderstorm WarningUNRPennington49 min
May 30, 3:16 PM CDTSevere Thunderstorm WarningUNRPerkins59 min
May 30, 3:17 PM CDTSevere Thunderstorm WarningFGFGrand Forks43 min
May 30, 3:25 PM CDTSevere Thunderstorm WarningUNRPerkins, Ziebach65 min
May 30, 3:35 PM CDTSevere Thunderstorm WarningABRCorson25 min
May 30, 3:37 PM CDTSevere Thunderstorm WarningBISAdams, Grant, Sioux43 min
May 30, 3:45 PM CDTSevere Thunderstorm WarningUNRHaakon, Pennington60 min
May 30, 3:46 PM CDTSevere Thunderstorm WarningABRCampbell, McPherson, Walworth44 min
May 30, 3:48 PM CDTSevere Thunderstorm WarningABRCorson57 min
May 30, 4:03 PM CDTSevere Thunderstorm WarningUNRMeade, Perkins, Ziebach57 min
May 30, 4:14 PM CDTSevere Thunderstorm WarningFGFPolk28 min
May 30, 4:24 PM CDTSevere Thunderstorm WarningABRCampbell, McPherson36 min
May 30, 4:32 PM CDTSevere Thunderstorm WarningFGFPolk31 min
May 30, 4:33 PM CDTSevere Thunderstorm WarningBISMcIntosh32 min
May 30, 4:43 PM CDTSevere Thunderstorm WarningABRDewey48 min
May 30, 4:43 PM CDTSevere Thunderstorm WarningUNRMellette49 min
May 30, 5:09 PM CDTSevere Thunderstorm WarningABRDewey30 min
May 30, 5:11 PM CDTSevere Thunderstorm WarningABRJones49 min
May 30, 5:26 PM CDTSevere Thunderstorm WarningABRCorson, Dewey36 min
May 30, 5:40 PM CDTSevere Thunderstorm WarningFGFPolk35 min
May 30, 6:13 PM CDTSevere Thunderstorm WarningABRHughes, Stanley32 min
May 30, 6:16 PM CDTSevere Thunderstorm WarningFGFPolk44 min
May 30, 6:19 PM CDTFlash Flood WarningFGFPolk3 hr
May 30, 6:43 PM CDTSevere Thunderstorm WarningABRWalworth47 min
May 30, 7:18 PM CDTSevere Thunderstorm WarningABRCampbell, McPherson33 min
May 30, 7:24 PM CDTSevere Thunderstorm WarningABREdmunds, McPherson, Potter, Walworth50 min
May 30, 7:53 PM CDTSevere Thunderstorm WarningABRBrown, Edmunds, McPherson45 min
May 30, 8:38 PM CDTSevere Thunderstorm WarningFGFCass39 min
May 30, 9:20 PM CDTSevere Thunderstorm WarningABRHand, Spink40 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

Bismarck Municip, ND (KBIS), launched 12:00Z, 7.8 hours before the alert went out and 118 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.

Skew-T log-pSkew-T log-p diagram, Bismarck Municip, ND at 12:00Z on 2016-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 197 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Bismarck Municip, ND at 12:00Z on 2016-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 103 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
197 J/kg
Mixed-layer CIN
-196 J/kg
Mixed-layer LCL
1274 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
103 m²/s²
0-3 km storm-relative helicity
131 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 30, 5:14 PM CDTMesoscale DiscussionSPCBlue Earth, Brown, Cottonwood, Faribault, Jackson, Martin and 3 more91 min
May 30, 6:37 PM CDTMesoscale DiscussionSPCBig Stone, Clay, Mahnomen, Norman, Pennington, Polk and 3 more113 min
May 30, 1:14 PM CDTMesoscale DiscussionSPCBenson, Eddy, Foster, Sheridan, Wells61 min
May 30, 2:16 PM CDTMesoscale DiscussionSPCBarnes, Dickey, Emmons, Griggs, Kidder, LaMoure and 5 more59 min

Nearby

Severe Thunderstorm Watches in South Dakota, 2016Severe Thunderstorm Watches in North Dakota, 2016Severe Thunderstorm Watches in Minnesota, 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.