Alert archive / Texas / Mesoscale Discussions in 2017

Mesoscale Discussion 1046

June 15, 201716 counties in Oklahoma; 36 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 15, 2017, 5:45 PM CDT for 16 counties in Oklahoma; 36 counties in Texas. It was in force for 60 min.

The area

The outline as issued.

The facts

Issued
Jun 15, 2017, 5:45 PM CDT (22:45 UTC)
Expired
Jun 15, 2017, 6:45 PM CDT
In force
60 min
Issued by
the Storm Prediction Center
All 52 counties

Alfalfa County, OK, Beaver County, OK, Beckham County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Jackson County, OK, Kiowa County, OK, Major County, OK, Roger Mills County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Armstrong County, TX, Briscoe County, TX, Carson County, TX, Castro County, TX, Childress County, TX, Collingsworth County, TX, Cottle County, TX, Crosby County, TX, Dickens County, TX, Donley County, TX, Floyd County, TX, Foard County, TX, Garza County, TX, Gray County, TX, Hale County, TX, Hall County, TX, Hardeman County, TX, Hemphill County, TX, Hockley County, TX, Hutchinson County, TX, Kent County, TX, King County, TX, Lamb County, TX, Lipscomb County, TX, Lubbock County, TX, Lynn County, TX, Motley County, TX, Ochiltree County, TX, Potter County, TX, Randall County, TX, Roberts County, TX, Stonewall County, TX, Swisher County, TX, Terry County, TX, Wheeler County, TX, Yoakum County, TX

The radar

The Amarillo radar (KAMA), 112 km from the middle of the area, began a volume at 22:44 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.

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 10.8 hours before the alert went out and 111 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-pSkew-T log-p diagram, Amarillo Airport, TX at 12:00Z on 2017-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 533 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Amarillo Airport, TX at 12:00Z on 2017-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -55 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
533 J/kg
Mixed-layer CIN
-325 J/kg
Mixed-layer LCL
2642 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
-55 m²/s²
0-3 km storm-relative helicity
41 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

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.

IssuedProductOfficeCountiesLasted
Jun 14, 7:56 PM CDTMesoscale DiscussionSPCBeckham, Greer, Harmon, Jackson, Kiowa, Tillman and 1 more94 min
Jun 15, 2:03 PM CDTMesoscale DiscussionSPCBeckham, Custer, Dewey, Ellis, Greer, Harmon and 4 more2 hr
Jun 15, 2:20 PM CDTSevere Thunderstorm WatchSPCBeckham, Custer, Dewey, Ellis, Greer, Harmon and 7 more7 hr
Jun 15, 2:40 PM CDTMesoscale DiscussionSPCAndrews, Crane, Crockett, Dawson, Ector, Glasscock and 11 more3 hr
Jun 15, 5:11 PM CDTSevere Thunderstorm WatchSPCAndrews, Borden, Callahan, Coke, Coleman, Concho and 25 more7 hr

Nearby

Mesoscale Discussions in Texas, 2017Mesoscale Discussions in Oklahoma, 2017Every 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.