Alert archive / Nebraska / Mesoscale Discussions in 2016

Mesoscale Discussion 1172

July 6, 2016Phillips County, Sedgwick County, Colorado; Cheyenne County, Rawlins County, Kansas; 11 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Jul 6, 2016, 2:21 PM MDT for Phillips County, Sedgwick County, Colorado; Cheyenne County, Rawlins County, Kansas; 11 counties in Nebraska. It was in force for 54 min.

The area

The outline as issued.

The facts

Issued: Jul 6, 2016, 2:21 PM MDT (20:21 UTC)
Expired: Jul 6, 2016, 3:15 PM MDT
In force: 54 min
Issued by: the Storm Prediction Center
Chance of a watch: 80%

Counties Phillips County, CO, Sedgwick County, CO, Cheyenne County, KS, Rawlins County, KS, Arthur County, NE, Chase County, NE, Deuel County, NE, Dundy County, NE, Garden County, NE, Hayes County, NE, Hitchcock County, NE, Keith County, NE, Lincoln County, NE, McPherson County, NE, Perkins County, NE

The radar

The Goodland radar (KGLD), 132 km from the middle of the area, began a volume at 20:23 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.

Severe Thunderstorm Watch 341Jul 6, 2:50 PM MDT

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 8.4 hours before the alert went out and 113 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: 961 J/kg
Mixed-layer CIN: -393 J/kg
Mixed-layer LCL: 1663 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 149 m²/s²
0-3 km storm-relative helicity: 181 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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
Jul 6, 2:49 PM MDT	Severe Thunderstorm Watch	SPC	Kit Carson, Phillips, Sedgwick, Yuma	8 hr
Jul 5, 6:31 PM MDT	Mesoscale Discussion	SPC	Clay, Cloud, Decatur, Ellis, Ellsworth, Gove and 17 more	119 min
Jul 5, 8:11 PM MDT	Severe Thunderstorm Watch	SPC	Barber, Barton, Comanche, Edwards, Ellis, Ellsworth and 23 more	7 hr
Jul 5, 10:20 PM MDT	Mesoscale Discussion	SPC	Barber, Barton, Butler, Clark, Cloud, Comanche and 36 more	115 min
Jul 6, 12:50 AM MDT	Mesoscale Discussion	SPC	Allen, Anderson, Barber, Barton, Bourbon, Butler and 33 more	85 min
Jul 6, 1:19 AM MDT	Severe Thunderstorm Watch	SPC	Allen, Anderson, Bourbon, Butler, Chase, Chautauqua and 22 more	7 hr
Jul 6, 2:47 AM MDT	Mesoscale Discussion	SPC	Barber, Comanche, Edwards, Harper, Hodgeman, Kingman and 7 more	58 min
Jul 5, 7:10 PM MDT	Severe Thunderstorm Watch	SPC	Antelope, Boone, Burt, Butler, Colfax, Cuming and 11 more	5 hr
Jul 5, 9:15 PM MDT	Mesoscale Discussion	SPC	Burt, Dodge, Douglas, Washington	90 min
Jul 6, 2:21 PM MDT	Tornado Watch	SPC	Blaine, Box Butte, Brown, Cherry, Dawes, Grant and 6 more	7 hr
Jul 6, 5:48 PM MDT	Mesoscale Discussion	SPC	Antelope, Blaine, Boone, Boyd, Brown, Cedar and 24 more	57 min

Nearby

Mesoscale Discussions in Nebraska, 2016 Mesoscale Discussions in Colorado, 2016 Mesoscale Discussions in Kansas, 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.