Alert archive / Oklahoma / Mesoscale Discussions in 2017

Mesoscale Discussion 959

June 6, 20175 counties in Kansas; 8 counties in Oklahoma; Lipscomb County, Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 6, 2017, 5:50 PM CDT for 5 counties in Kansas; 8 counties in Oklahoma; Lipscomb County, Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jun 6, 2017, 5:50 PM CDT (22:50 UTC)
Expired: Jun 6, 2017, 8:15 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center
Chance of a watch: 5%

Counties Barber County, KS, Clark County, KS, Comanche County, KS, Meade County, KS, Seward County, KS, Alfalfa County, OK, Beaver County, OK, Dewey County, OK, Ellis County, OK, Harper County, OK, Major County, OK, Woods County, OK, Woodward County, OK, Lipscomb County, TX

The radar

The Vance AFB radar (KVNX), 118 km from the middle of the area, began a volume at 22:53 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

Dodge City, (KDDC), launched 12:00Z, 10.8 hours before the alert went out and 131 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: 16 J/kg
Mixed-layer CIN: -261 J/kg
Mixed-layer LCL: 2148 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: -31 m²/s²
0-3 km storm-relative helicity: -17 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
Jun 6, 3:48 PM CDT	Mesoscale Discussion	SPC	Edwards, Finney, Ford, Gove, Graham, Gray and 14 more	2 hr

Nearby

Mesoscale Discussions in Oklahoma, 2017 Mesoscale Discussions in Kansas, 2017 Mesoscale Discussions in Texas, 2017 Every mesoscale discussion in 2017

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.