Alert archive / South Dakota / Severe Thunderstorm Watches in 2015

Severe Thunderstorm Watch 281

June 9, 201526 counties in Minnesota; 28 counties in South Dakota

The Storm Prediction Center issued this severe thunderstorm watch at Jun 9, 2015, 4:49 PM CDT for 26 counties in Minnesota; 28 counties in South Dakota. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Jun 9, 2015, 4:49 PM CDT (21:49 UTC)
Expired
Jun 9, 2015, 9:06 PM CDT
In force
4 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 54 counties

Big Stone County, MN, Brown County, MN, Chippewa County, MN, Cottonwood County, MN, Douglas County, MN, Jackson County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Lincoln County, MN, Lyon County, MN, Meeker County, MN, Morrison County, MN, Murray County, MN, Nobles County, MN, Pipestone County, MN, Pope County, MN, Redwood County, MN, Renville County, MN, Rock County, MN, Sherburne County, MN, Stearns County, MN, Stevens County, MN, Swift County, MN, Todd County, MN, Wright County, MN, Yellow Medicine County, MN, Aurora County, SD, Beadle County, SD, Brookings County, SD, Brule County, SD, Buffalo County, SD, Charles Mix County, SD, Clark County, SD, Codington County, SD, Davison County, SD, Deuel County, SD, Douglas County, SD, Grant County, SD, Gregory County, SD, Hamlin County, SD, Hand County, SD, Hanson County, SD, Hutchinson County, SD, Hyde County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, McCook County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Sanborn County, SD, Spink County, SD, Turner County, SD

The radar

The Sioux Falls radar (KFSD), 124 km from the middle of the area, began a volume at 21:52 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
5%
One or more EF2 to EF5 tornadoes
5%
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

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

IssuedProductOfficeCountiesLasted
Jun 9, 5:07 PM CDTSevere Thunderstorm WarningABRClark, Hamlin, Spink53 min
Jun 9, 5:08 PM CDTSevere Thunderstorm WarningMPXPope, Stevens, Swift52 min
Jun 9, 5:14 PM CDTSevere Thunderstorm WarningFSDLincoln, Lyon46 min
Jun 9, 5:14 PM CDTSevere Thunderstorm WarningABRDeuel, Grant23 min
Jun 9, 5:35 PM CDTSevere Thunderstorm WarningMPXKandiyohi, Pope, Stearns, Swift40 min
Jun 9, 5:44 PM CDTSevere Thunderstorm WarningMPXChippewa, Swift46 min
Jun 9, 5:53 PM CDTSevere Thunderstorm WarningFSDKingsbury, Miner38 min
Jun 9, 6:03 PM CDTSevere Thunderstorm WarningMPXKandiyohi, Stearns42 min
Jun 9, 6:18 PM CDTSevere Thunderstorm WarningFSDBeadle, Kingsbury, Miner, Sanborn42 min
Jun 9, 6:29 PM CDTSevere Thunderstorm WarningFSDLincoln, Lyon, Murray, Pipestone46 min
Jun 9, 6:29 PM CDTSevere Thunderstorm WarningABRBuffalo, Hughes, Hyde, Lyman30 min
Jun 9, 6:45 PM CDTSevere Thunderstorm WarningMPXSherburne, Stearns, Wright45 min
Jun 9, 6:55 PM CDTSevere Thunderstorm WarningFSDPipestone35 min
Jun 9, 7:18 PM CDTSevere Thunderstorm WarningMPXSherburne, Wright27 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 12:00Z, 9.8 hours before the alert went out and 74 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, Aberdeen, SD at 12:00Z on 2015-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Aberdeen, SD at 12:00Z on 2015-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 94 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2409 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
94 m²/s²
0-3 km storm-relative helicity
182 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 9, 3:21 PM CDTMesoscale DiscussionSPCBig Stone, Brown, Chippewa, Cottonwood, Jackson, Kandiyohi and 18 more114 min
Jun 9, 6:32 PM CDTMesoscale DiscussionSPCAitkin, Carlton, Itasca, Kanabec, Lake, Pine and 1 more88 min

Nearby

Severe Thunderstorm Watches in South Dakota, 2015Severe Thunderstorm Watches in Minnesota, 2015Every severe thunderstorm watch in 2015

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.