Alert archive / South Dakota / Severe Thunderstorm Watches in 2010

Severe Thunderstorm Watch 331

June 16, 20109 counties in North Dakota; 13 counties in South Dakota

The Storm Prediction Center issued this severe thunderstorm watch at Jun 16, 2010, 11:09 PM CDT for 9 counties in North Dakota; 13 counties in South Dakota. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jun 16, 2010, 11:09 PM CDT (04:09 UTC)
Expired
Jun 17, 2010, 3:50 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
70 kt
All 22 counties

Barnes County, ND, Burleigh County, ND, Dickey County, ND, Emmons County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Stutsman County, ND, Brown County, SD, Campbell County, SD, Edmunds County, SD, Faulk County, SD, Hand County, SD, Hughes County, SD, Hyde County, SD, McPherson County, SD, Potter County, SD, Spink County, SD, Stanley County, SD, Sully County, SD, Walworth County, SD

The radar

The Aberdeen radar (KABR), 109 km from the middle of the area, began a volume at 04:09 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
5%
Ten or more severe wind reports
30%
One or more gusts of 65 knots or more
30%
Ten or more severe hail reports
30%
One or more hailstones of 2 inches or more
20%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 16, 11:22 PM CDTSevere Thunderstorm WarningABRCampbell, Corson, Dewey, Potter, Walworth38 min
Jun 16, 11:41 PM CDTSevere Thunderstorm WarningABRDewey, Stanley49 min
Jun 16, 11:42 PM CDTSevere Thunderstorm WarningBISBurleigh, Emmons, Morton63 min
Jun 17, 12:03 AM CDTSevere Thunderstorm WarningABRCampbell, Edmunds, Faulk, McPherson, Potter, Walworth57 min
Jun 17, 12:05 AM CDTSevere Thunderstorm WarningBISBurleigh, Emmons, Kidder, Logan, McIntosh55 min
Jun 17, 12:47 AM CDTSevere Thunderstorm WarningBISBurleigh, Kidder, Sheridan, Wells58 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 00:00Z, 4.2 hours before the alert went out and 120 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 00:00Z on 2010-06-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 935 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 00:00Z on 2010-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 174 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
935 J/kg
Mixed-layer CIN
-190 J/kg
Mixed-layer LCL
1650 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
174 m²/s²
0-3 km storm-relative helicity
204 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.1

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 16, 7:01 PM CDTMesoscale DiscussionSPCBowman59 min
Jun 16, 7:20 PM CDTTornado WatchSPCBillings, Bottineau, Burke, Burleigh, Divide, Dunn and 14 more8 hr
Jun 16, 9:50 PM CDTMesoscale DiscussionSPCBillings, McKenzie, Williams55 min
Jun 16, 10:23 PM CDTMesoscale DiscussionSPCEmmons, Kidder, Logan, McIntosh, Sioux67 min
Jun 17, 2:05 AM CDTMesoscale DiscussionSPCBarnes, Benson, Bottineau, Burleigh, Dickey, Eddy and 20 more55 min
Jun 17, 7:53 AM CDTMesoscale DiscussionSPCCass, Grand Forks, Griggs, Nelson, Ransom, Richland and 3 more97 min
Jun 17, 12:04 PM CDTMesoscale DiscussionSPCBarnes, Benson, Bottineau, Burleigh, Cass, Cavalier and 31 more56 min
Jun 17, 12:21 PM CDTTornado WatchSPCBarnes, Benson, Bottineau, Burke, Burleigh, Cass and 36 more9 hr
Jun 17, 2:18 PM CDTMesoscale DiscussionSPCBarnes, Benson, Bottineau, Burleigh, Cass, Dickey and 24 more57 min
Jun 17, 6:41 PM CDTMesoscale DiscussionSPCGrand Forks, Walsh64 min
Jun 16, 9:17 PM CDTMesoscale DiscussionSPCCorson, Dewey, Ziebach58 min
Jun 17, 1:40 AM CDTMesoscale DiscussionSPCButte, Custer, Haakon, Harding, Lawrence, Meade and 3 more95 min
Jun 17, 12:03 PM CDTMesoscale DiscussionSPCBrookings, Clay, Codington, Deuel, Grant, Hamlin and 6 more87 min
Jun 17, 1:54 PM CDTTornado WatchSPCCodington, Deuel, Grant, Hamlin, Roberts, Union8 hr

Nearby

Severe Thunderstorm Watches in South Dakota, 2010Severe Thunderstorm Watches in North Dakota, 2010Every severe thunderstorm watch in 2010

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.