Alert archive / South Dakota / Severe Thunderstorm Watches in 2014

Severe Thunderstorm Watch 206

June 3, 20148 counties in Nebraska; 22 counties in South Dakota

The Storm Prediction Center issued this severe thunderstorm watch at Jun 3, 2014, 9:36 AM CDT for 8 counties in Nebraska; 22 counties in South Dakota. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Jun 3, 2014, 9:36 AM CDT (14:36 UTC)
Expired: Jun 3, 2014, 5:00 PM CDT
In force: 7 hr
Issued by: the Storm Prediction Center
Largest hail expected: 2.5 in
Strongest gust expected: 60 kt

All 30 counties

Boyd County, NE, Brown County, NE, Cherry County, NE, Holt County, NE, Keya Paha County, NE, Rock County, NE, Sheridan County, NE, Wheeler County, NE, Aurora County, SD, Bennett County, SD, Brule County, SD, Buffalo County, SD, Charles Mix County, SD, Douglas County, SD, Gregory County, SD, Haakon County, SD, Hand County, SD, Hughes County, SD, Hyde County, SD, Jackson County, SD, Jerauld County, SD, Jones County, SD, Lyman County, SD, Meade County, SD, Mellette County, SD, Pennington County, SD, Stanley County, SD, Todd County, SD, Tripp County, SD, Ziebach County, SD

The radar

The Rapid City radar (KUDX), 151 km from the middle of the area, began a volume at 14:39 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: 30%
One or more gusts of 65 knots or more: 10%
Ten or more severe hail reports: 60%
One or more hailstones of 2 inches or more: 30%
Six or more combined severe hail and wind reports: 90%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Jun 3, 9:58 AM CDT	Severe Thunderstorm Warning	UNR	Mellette, Todd	62 min
Jun 3, 10:16 AM CDT	Severe Thunderstorm Warning	UNR	Jackson, Mellette	38 min
Jun 3, 10:32 AM CDT	Severe Thunderstorm Warning	UNR	Todd	58 min
Jun 3, 10:54 AM CDT	Severe Thunderstorm Warning	LBF	Cherry	36 min
Jun 3, 11:13 AM CDT	Severe Thunderstorm Warning	LBF	Brown, Cherry, Keya Paha	47 min
Jun 3, 11:59 AM CDT	Severe Thunderstorm Warning	LBF	Brown, Keya Paha, Rock	46 min
Jun 3, 12:41 PM CDT	Severe Thunderstorm Warning	LBF	Holt, Keya Paha, Rock	49 min
Jun 3, 1:16 PM CDT	Severe Thunderstorm Warning	LBF	Holt	44 min
Jun 3, 2:49 PM CDT	Severe Thunderstorm Warning	LBF	Boyd, Holt	25 min
Jun 3, 3:47 PM CDT	Severe Thunderstorm Warning	LBF	Garfield, Holt, Loup, Rock	58 min
Jun 3, 3:47 PM CDT	Severe Thunderstorm Warning	UNR	Meade	46 min
Jun 3, 3:58 PM CDT	Severe Thunderstorm Warning	LBF	Cherry, Hooker, Thomas	47 min
Jun 3, 4:08 PM CDT	Severe Thunderstorm Warning	LBF	Brown, Rock	52 min
Jun 3, 4:18 PM CDT	Severe Thunderstorm Warning	LBF	Garfield, Holt, Wheeler	42 min
Jun 3, 4:32 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Brown, Cherry, Thomas	43 min
Jun 3, 4:42 PM CDT	Severe Thunderstorm Warning	LBF	Cherry, Hooker, Thomas	48 min
Jun 3, 4:53 PM CDT	Severe Thunderstorm Warning	LBF	Wheeler	39 min
Jun 3, 4:57 PM CDT	Severe Thunderstorm Warning	LBF	Cherry, Grant	48 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

Rapid City, SD (KRAP), launched 12:00Z, 2.6 hours before the alert went out and 153 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1105 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 103 m²/s²
0-3 km storm-relative helicity: 280 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.3

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 3, 3:02 AM CDT	Mesoscale Discussion	SPC	Blaine, Brown, Cherry, Grant, Hooker, Keya Paha and 6 more	118 min
Jun 3, 7:00 AM CDT	Mesoscale Discussion	SPC	Blaine, Brown, Garfield, Greeley, Holt, Howard and 6 more	2 hr
Jun 3, 12:07 PM CDT	Mesoscale Discussion	SPC	Antelope, Blaine, Boone, Boyd, Brown, Cedar and 15 more	83 min
Jun 3, 1:12 PM CDT	Tornado Watch	SPC	Adams, Antelope, Blaine, Boone, Brown, Buffalo and 55 more	10 hr
Jun 3, 1:20 PM CDT	Mesoscale Discussion	SPC	Arthur, Banner, Box Butte, Cheyenne, Dawes, Deuel and 7 more	85 min
Jun 3, 2:37 PM CDT	Severe Thunderstorm Watch	SPC	Dawes, Sioux	6 hr
Jun 3, 3:11 PM CDT	Tornado Watch	SPC	Arthur, Box Butte, Cherry, Deuel, Garden, Grant and 10 more	7 hr
Jun 3, 3:48 PM CDT	Mesoscale Discussion	SPC	Antelope, Boone, Burt, Butler, Colfax, Cuming and 18 more	87 min
Jun 3, 4:37 PM CDT	Mesoscale Discussion	SPC	Cass, Douglas, Nemaha, Sarpy, Washington	83 min
Jun 3, 4:54 PM CDT	Mesoscale Discussion	SPC	Adams, Blaine, Boone, Buffalo, Butler, Clay and 36 more	96 min
Jun 3, 5:59 PM CDT	Tornado Watch	SPC	Adams, Blaine, Boone, Buffalo, Butler, Cass and 43 more	7 hr
Jun 3, 6:40 PM CDT	Mesoscale Discussion	SPC	Dawes, Sioux	65 min
Jun 3, 1:51 PM CDT	Mesoscale Discussion	SPC	Butte, Harding	114 min

Nearby

Severe Thunderstorm Watches in South Dakota, 2014 Severe Thunderstorm Watches in Nebraska, 2014 Every severe thunderstorm watch in 2014

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.