Alert archive / Nebraska / Mesoscale Discussions in 2014

Mesoscale Discussion 794

June 3, 201413 counties in Nebraska; Fall River County, South Dakota; Goshen County, Niobrara County, Platte County, Wyoming

The Storm Prediction Center issued this mesoscale discussion at Jun 3, 2014, 12:20 PM MDT for 13 counties in Nebraska; Fall River County, South Dakota; Goshen County, Niobrara County, Platte County, Wyoming. It was in force for 85 min.

The area

The outline as issued.

The facts

Issued: Jun 3, 2014, 12:20 PM MDT (18:20 UTC)
Expired: Jun 3, 2014, 1:45 PM MDT
In force: 85 min
Issued by: the Storm Prediction Center
Chance of a watch: 95%

Counties Arthur County, NE, Banner County, NE, Box Butte County, NE, Cheyenne County, NE, Dawes County, NE, Deuel County, NE, Garden County, NE, Keith County, NE, Kimball County, NE, Morrill County, NE, Scotts Bluff County, NE, Sheridan County, NE, Sioux County, NE, Fall River County, SD, Goshen County, WY, Niobrara County, WY, Platte County, WY

The radar

The Cheyenne radar (KCYS), 154 km from the middle of the area, began a volume at 18:19 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Rapid City, SD (KRAP), launched 12:00Z, 6.3 hours before the alert went out and 209 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

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 3, 2:02 AM MDT	Mesoscale Discussion	SPC	Blaine, Brown, Cherry, Grant, Hooker, Keya Paha and 6 more	118 min
Jun 3, 6:00 AM MDT	Mesoscale Discussion	SPC	Blaine, Brown, Garfield, Greeley, Holt, Howard and 6 more	2 hr
Jun 3, 8:36 AM MDT	Severe Thunderstorm Watch	SPC	Boyd, Brown, Cherry, Holt, Keya Paha, Rock and 2 more	7 hr
Jun 3, 11:07 AM MDT	Mesoscale Discussion	SPC	Antelope, Blaine, Boone, Boyd, Brown, Cedar and 15 more	83 min
Jun 3, 12:12 PM MDT	Tornado Watch	SPC	Adams, Antelope, Blaine, Boone, Brown, Buffalo and 55 more	10 hr
Jun 3, 1:37 PM MDT	Severe Thunderstorm Watch	SPC	Dawes, Sioux	6 hr
Jun 3, 2:11 PM MDT	Tornado Watch	SPC	Arthur, Box Butte, Cherry, Deuel, Garden, Grant and 10 more	7 hr
Jun 3, 2:48 PM MDT	Mesoscale Discussion	SPC	Antelope, Boone, Burt, Butler, Colfax, Cuming and 18 more	87 min
Jun 3, 3:37 PM MDT	Mesoscale Discussion	SPC	Cass, Douglas, Nemaha, Sarpy, Washington	83 min
Jun 3, 3:54 PM MDT	Mesoscale Discussion	SPC	Adams, Blaine, Boone, Buffalo, Butler, Clay and 36 more	96 min
Jun 3, 4:59 PM MDT	Tornado Watch	SPC	Adams, Blaine, Boone, Buffalo, Butler, Cass and 43 more	7 hr
Jun 3, 5:40 PM MDT	Mesoscale Discussion	SPC	Dawes, Sioux	65 min
Jun 3, 12:51 PM MDT	Mesoscale Discussion	SPC	Butte, Harding	114 min

Nearby

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