Alert archive / Nebraska / Mesoscale Discussions in 2015

Mesoscale Discussion 1016

June 14, 201525 counties in Nebraska; 9 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 14, 2015, 12:51 PM CDT for 25 counties in Nebraska; 9 counties in South Dakota. It was in force for 114 min.

The area

The outline as issued.

The facts

Issued: Jun 14, 2015, 12:51 PM CDT (17:51 UTC)
Expired: Jun 14, 2015, 2:45 PM CDT
In force: 114 min
Issued by: the Storm Prediction Center
Chance of a watch: 40%

All 34 counties

Antelope County, NE, Arthur County, NE, Blaine County, NE, Boone County, NE, Boyd County, NE, Brown County, NE, Cedar County, NE, Custer County, NE, Dawson County, NE, Garfield County, NE, Greeley County, NE, Holt County, NE, Hooker County, NE, Keith County, NE, Knox County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, McPherson County, NE, Pierce County, NE, Rock County, NE, Sherman County, NE, Thomas County, NE, Valley County, NE, Wheeler County, NE, Bon Homme County, SD, Clay County, SD, Hutchinson County, SD, Lincoln County, SD, McCook County, SD, Minnehaha County, SD, Turner County, SD, Union County, SD, Yankton County, SD

The radar

The North Platte radar (KLNX), 152 km from the middle of the area, began a volume at 17:54 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, 5.9 hours before the alert went out and 203 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: 452 J/kg
Mixed-layer CIN: -106 J/kg
Mixed-layer LCL: 949 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -38 m²/s²
0-3 km storm-relative helicity: -4 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 14, 12:49 AM CDT	Mesoscale Discussion	SPC	Butte, Custer, Haakon, Lawrence, Meade, Pennington and 2 more	2 hr
Jun 14, 5:01 AM CDT	Mesoscale Discussion	SPC	Brown, Campbell, Dewey, Edmunds, Faulk, Haakon and 10 more	2 hr
Jun 14, 7:34 AM CDT	Mesoscale Discussion	SPC	Aurora, Beadle, Brown, Brule, Buffalo, Clark and 17 more	2 hr

Nearby

Mesoscale Discussions in Nebraska, 2015 Mesoscale Discussions in South Dakota, 2015 Every mesoscale discussion 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.