Alert archive / South Dakota / Mesoscale Discussions in 2014

Mesoscale Discussion 1019

June 16, 20145 counties in Nebraska; 14 counties in South Dakota; Crook County, Niobrara County, Weston County, Wyoming

The Storm Prediction Center issued this mesoscale discussion at Jun 16, 2014, 3:03 PM MDT for 5 counties in Nebraska; 14 counties in South Dakota; Crook County, Niobrara County, Weston County, Wyoming. It was in force for 117 min.

The area

The outline as issued.

The facts

Issued: Jun 16, 2014, 3:03 PM MDT (21:03 UTC)
Expired: Jun 16, 2014, 5:00 PM MDT
In force: 117 min
Issued by: the Storm Prediction Center
Chance of a watch: 40%

All 22 counties

Box Butte County, NE, Cherry County, NE, Dawes County, NE, Sheridan County, NE, Sioux County, NE, Bennett County, SD, Butte County, SD, Custer County, SD, Fall River County, SD, Haakon County, SD, Harding County, SD, Jackson County, SD, Lawrence County, SD, Meade County, SD, Mellette County, SD, Oglala Lakota County, SD, Pennington County, SD, Perkins County, SD, Todd County, SD, Crook County, WY, Niobrara County, WY, Weston County, WY

The radar

The Rapid City radar (KUDX), 101 km from the middle of the area, began a volume at 21:04 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.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 9.1 hours before the alert went out and 287 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: 2904 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 545 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 276 m²/s²
0-3 km storm-relative helicity: 479 m²/s²
Significant tornado parameter: 5.8
Supercell composite: 31.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 16, 1:47 AM MDT	Mesoscale Discussion	SPC	Adams, Antelope, Blaine, Boone, Brown, Buffalo and 30 more	118 min
Jun 16, 6:12 AM MDT	Severe Thunderstorm Watch	SPC	Antelope, Boone, Boyd, Burt, Butler, Cass and 44 more	9 hr
Jun 16, 9:19 AM MDT	Mesoscale Discussion	SPC	Burt, Cass, Cedar, Colfax, Cuming, Dakota and 21 more	116 min
Jun 16, 1:13 PM MDT	Mesoscale Discussion	SPC	Adams, Antelope, Blaine, Boone, Boyd, Brown and 50 more	62 min
Jun 16, 2:07 PM MDT	Tornado Watch PDS	SPC	Antelope, Blaine, Boone, Boyd, Brown, Buffalo and 35 more	7 hr
Jun 16, 2:50 PM MDT	Mesoscale Discussion	SPC	Adams, Buffalo, Dawson, Franklin, Frontier, Furnas and 7 more	115 min
Jun 16, 3:32 PM MDT	Mesoscale Discussion	SPC	Cuming, Thurston	58 min
Jun 16, 5:50 PM MDT	Mesoscale Discussion	SPC	Garfield, Wheeler	55 min
Jun 16, 6:33 AM MDT	Mesoscale Discussion	SPC	Beadle, Brown, Buffalo, Clark, Codington, Day and 18 more	57 min
Jun 16, 11:48 AM MDT	Mesoscale Discussion	SPC	Bon Homme, Brookings, Clay, Davison, Douglas, Hanson and 12 more	87 min
Jun 16, 4:37 PM MDT	Tornado Watch	SPC	Union	6 hr
Jun 16, 4:59 PM MDT	Mesoscale Discussion	SPC	Sheridan	91 min

Nearby

Mesoscale Discussions in South Dakota, 2014 Mesoscale Discussions in Nebraska, 2014 Mesoscale Discussions in Wyoming, 2014 Every mesoscale discussion 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.