Alert archive / Nebraska / Mesoscale Discussions in 2016

Mesoscale Discussion 1096

June 29, 201619 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jun 29, 2016, 10:22 PM CDT for 19 counties in Nebraska. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued: Jun 29, 2016, 10:22 PM CDT (03:22 UTC)
Expired: Jun 29, 2016, 11:45 PM CDT
In force: 83 min
Issued by: the Storm Prediction Center
Chance of a watch: 40%

Counties Adams County, NE, Antelope County, NE, Boone County, NE, Buffalo County, NE, Clay County, NE, Frontier County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Howard County, NE, Kearney County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Phelps County, NE, Polk County, NE, Red Willow County, NE, Sherman County, NE

The radar

The Grand Island radar (KUEX), 103 km from the middle of the area, began a volume at 03:25 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 00:00Z, 3.4 hours before the alert went out and 127 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: 851 J/kg
Mixed-layer CIN: -108 J/kg
Mixed-layer LCL: 1867 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: 143 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.8

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 29, 7:32 PM CDT	Mesoscale Discussion	SPC	Cherry	118 min
Jun 29, 8:06 PM CDT	Severe Thunderstorm Watch	SPC	Arthur, Blaine, Boyd, Brown, Chase, Cherry and 18 more	7 hr
Jun 29, 8:20 PM CDT	Severe Thunderstorm Watch	SPC	Dundy	5 hr
Jun 29, 9:31 PM CDT	Mesoscale Discussion	SPC	Blaine, Brown, Cherry, Custer, Garfield, Hooker and 6 more	89 min

Nearby

Mesoscale Discussions in Nebraska, 2016 Every mesoscale discussion in 2016

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.