Alert archive / South Dakota / Mesoscale Discussions in 2014

Mesoscale Discussion 1163

June 26, 20144 states

The Storm Prediction Center issued this mesoscale discussion at Jun 26, 2014, 5:48 PM MDT for 4 states. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued: Jun 26, 2014, 5:48 PM MDT (23:48 UTC)
Expired: Jun 26, 2014, 7:15 PM MDT
In force: 87 min
Issued by: the Storm Prediction Center

All 26 counties

Adams County, CO, Logan County, CO, Morgan County, CO, Washington County, CO, Weld County, CO, Yuma County, CO, Banner County, NE, Box Butte County, NE, Cheyenne County, NE, Dawes County, NE, Kimball County, NE, Morrill County, NE, Scotts Bluff County, NE, Sioux County, NE, Butte County, SD, Custer County, SD, Fall River County, SD, Harding County, SD, Lawrence County, SD, Meade County, SD, Oglala Lakota County, SD, Pennington County, SD, Perkins County, SD, Goshen County, WY, Laramie County, WY, Niobrara County, WY

The radar

The Rapid City radar (KUDX), 183 km from the middle of the area, began a volume at 23:48 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

Rapid City, SD (KRAP), launched 12:00Z, 11.8 hours before the alert went out and 176 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: 1771 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 138 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 25, 8:49 PM MDT	Mesoscale Discussion	SPC	Cheyenne, Kiowa, Kit Carson, Prowers	56 min
Jun 26, 2:07 PM MDT	Mesoscale Discussion	SPC	Adams, Arapahoe, Boulder, Broomfield, Cheyenne, Denver and 15 more	53 min
Jun 26, 3:01 PM MDT	Severe Thunderstorm Watch	SPC	Logan, Morgan, Phillips, Sedgwick, Washington, Weld	8 hr
Jun 26, 5:50 PM MDT	Mesoscale Discussion	SPC	Baca, Bent, Crowley, Kiowa, Otero, Prowers	2 hr
Jun 25, 8:15 PM MDT	Mesoscale Discussion	SPC	Garden, Sheridan	90 min
Jun 26, 1:54 PM MDT	Mesoscale Discussion	SPC	Burt, Butler, Cass, Colfax, Cuming, Dakota and 24 more	3 hr
Jun 26, 12:35 PM MDT	Mesoscale Discussion	SPC	Butte, Custer, Fall River, Harding, Lawrence, Meade and 1 more	115 min
Jun 26, 1:33 PM MDT	Severe Thunderstorm Watch	SPC	Big Horn, Campbell, Crook, Johnson, Sheridan, Washakie and 1 more	7 hr
Jun 26, 5:15 PM MDT	Mesoscale Discussion	SPC	Big Horn, Campbell, Crook, Hot Springs, Johnson, Sheridan and 2 more	90 min

Nearby

Mesoscale Discussions in South Dakota, 2014 Mesoscale Discussions in Nebraska, 2014 Mesoscale Discussions in Colorado, 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.