Alert archive / Oklahoma / Mesoscale Discussions in 2012

Mesoscale Discussion 1188

June 16, 201226 counties in Oklahoma; 16 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 16, 2012, 3:02 PM CDT for 26 counties in Oklahoma; 16 counties in Texas. It was in force for 88 min.

The area

The outline as issued.

The facts

Issued: Jun 16, 2012, 3:02 PM CDT (20:02 UTC)
Expired: Jun 16, 2012, 4:30 PM CDT
In force: 88 min
Issued by: the Storm Prediction Center
Chance of a watch: 20%

All 42 counties

Alfalfa County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Carter County, OK, Cleveland County, OK, Comanche County, OK, Cotton County, OK, Garfield County, OK, Garvin County, OK, Grady County, OK, Grant County, OK, Jefferson County, OK, Kingfisher County, OK, Lincoln County, OK, Logan County, OK, Major County, OK, McClain County, OK, Murray County, OK, Noble County, OK, Oklahoma County, OK, Pawnee County, OK, Payne County, OK, Pottawatomie County, OK, Stephens County, OK, Tillman County, OK, Archer County, TX, Baylor County, TX, Clay County, TX, Dickens County, TX, Foard County, TX, Haskell County, TX, Jack County, TX, Kent County, TX, King County, TX, Knox County, TX, Montague County, TX, Stonewall County, TX, Throckmorton County, TX, Wichita County, TX, Wilbarger County, TX, Young County, TX

The radar

The Altus AFB radar (KFDR), 31 km from the middle of the area, began a volume at 20:03 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

Norman, OK (KOUN), launched 12:00Z, 8.0 hours before the alert went out and 172 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: 1730 J/kg
Mixed-layer CIN: -136 J/kg
Mixed-layer LCL: 892 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: 157 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 9.2

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 15, 11:25 PM CDT	Mesoscale Discussion	SPC	Harper	95 min
Jun 15, 11:44 PM CDT	Mesoscale Discussion	SPC	Harmon	91 min
Jun 16, 1:45 AM CDT	Mesoscale Discussion	SPC	Harmon	60 min
Jun 16, 4:10 AM CDT	Mesoscale Discussion	SPC	Grant	65 min
Jun 16, 6:24 PM CDT	Mesoscale Discussion	SPC	Beaver, Cimarron, Ellis, Harper, Texas	96 min
Jun 15, 8:37 PM CDT	Mesoscale Discussion	SPC	Briscoe, Castro, Crosby, Dickens, Floyd, Garza and 10 more	23 min
Jun 15, 8:39 PM CDT	Severe Thunderstorm Watch	SPC	Briscoe, Castro, Childress, Cottle, Crosby, Dickens and 14 more	5 hr

Nearby

Mesoscale Discussions in Oklahoma, 2012 Mesoscale Discussions in Texas, 2012 Every mesoscale discussion in 2012

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.