Alert archive / Oklahoma / Mesoscale Discussions in 2016

Mesoscale Discussion 776

May 29, 201621 counties in Oklahoma; 11 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 29, 2016, 7:52 AM CDT for 21 counties in Oklahoma; 11 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 29, 2016, 7:52 AM CDT (12:52 UTC)
Expired
May 29, 2016, 10:15 AM CDT
In force
2 hr
Issued by
the Storm Prediction Center
Chance of a watch
20%
All 32 counties

Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Cleveland County, OK, Comanche County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Grady County, OK, Greer County, OK, Harmon County, OK, Kingfisher County, OK, Kiowa County, OK, Logan County, OK, Major County, OK, McClain County, OK, Oklahoma County, OK, Roger Mills County, OK, Washita County, OK, Woodward County, OK, Carson County, TX, Collingsworth County, TX, Donley County, TX, Gray County, TX, Hansford County, TX, Hemphill County, TX, Hutchinson County, TX, Lipscomb County, TX, Ochiltree County, TX, Roberts County, TX, Wheeler County, TX

The radar

The Altus AFB radar (KFDR), 150 km from the middle of the area, began a volume at 12:54 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

Amarillo Airport, TX (KAMA), launched 12:00Z, 0.9 hours before the alert went out and 175 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 2016-05-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 428 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 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 2016-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 128 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
428 J/kg
Mixed-layer CIN
-344 J/kg
Mixed-layer LCL
1713 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
128 m²/s²
0-3 km storm-relative helicity
155 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

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
May 28, 10:00 PM CDTMesoscale DiscussionSPCCarter, Jefferson, Love60 min
May 29, 12:48 PM CDTMesoscale DiscussionSPCTexas117 min
May 29, 1:53 PM CDTSevere Thunderstorm WatchSPCBeckham, Cimarron, Greer, Harmon, Jackson, Roger Mills and 2 more8 hr
May 29, 3:31 PM CDTMesoscale DiscussionSPCCraig, Delaware, Mayes, Nowata, Osage, Ottawa and 3 more119 min
May 29, 2:42 PM CDTMesoscale DiscussionSPCAndrews, Borden, Brewster, Coke, Crane, Crockett and 27 more2 hr
May 29, 3:57 PM CDTSevere Thunderstorm WatchSPCAndrews, Borden, Brewster, Crane, Crockett, Culberson and 22 more7 hr
May 29, 4:56 PM CDTMesoscale DiscussionSPCCollin, Dallas, Denton, Ellis, Henderson, Hood and 14 more94 min
May 29, 5:21 PM CDTMesoscale DiscussionSPCArcher, Baylor, Cottle, Foard, Hall, Haskell and 10 more114 min

Nearby

Mesoscale Discussions in Oklahoma, 2016Mesoscale Discussions in Texas, 2016Every 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.