Alert archive / Oklahoma / Mesoscale Discussions in 2015

Mesoscale Discussion 2076

December 27, 201517 counties in Oklahoma; Hardeman County, Texas

The Storm Prediction Center issued this mesoscale discussion at Dec 27, 2015, 3:38 AM CST for 17 counties in Oklahoma; Hardeman County, Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Dec 27, 2015, 3:38 AM CST (09:38 UTC)
Expired
Dec 27, 2015, 9:45 AM CST
In force
6 hr
Issued by
the Storm Prediction Center

Counties Alfalfa County, OK, Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Custer County, OK, Dewey County, OK, Garfield County, OK, Grant County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Kingfisher County, OK, Kiowa County, OK, Major County, OK, Tillman County, OK, Washita County, OK, Hardeman County, TX

The radar

The Vance AFB radar (KVNX), 128 km from the middle of the area, began a volume at 09:38 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 00:00Z, 9.6 hours before the alert went out and 128 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, Norman, OK at 00:00Z on 2015-12-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 7 joules per kilogram.LCLEL10008507005003002001001 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, Norman, OK at 00:00Z on 2015-12-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 298 square meters per square second.1939587897117Sfc1 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
7 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
433 m above ground
0-6 km bulk shear
77 kt
0-1 km storm-relative helicity
298 m²/s²
0-3 km storm-relative helicity
416 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

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.

IssuedProductOfficeCountiesLasted
Dec 26, 7:32 PM CSTMesoscale DiscussionSPCAtoka, Bryan, Choctaw, Coal, Haskell, Latimer and 5 more88 min
Dec 26, 11:27 PM CSTMesoscale DiscussionSPCChoctaw, LeFlore, McCurtain, Pushmataha2 hr
Dec 27, 4:36 AM CSTMesoscale DiscussionSPCBeaver, Ellis, Texas6 hr
Dec 27, 9:50 AM CSTMesoscale DiscussionSPCAlfalfa, Beckham, Blaine, Caddo, Canadian, Comanche and 16 more6 hr
Dec 27, 12:04 PM CSTMesoscale DiscussionSPCJefferson, Love, Marshall2 hr
Dec 27, 3:55 PM CSTMesoscale DiscussionSPCBeckham, Caddo, Canadian, Cleveland, Comanche, Cotton and 10 more4 hr
Dec 26, 8:09 PM CSTMesoscale DiscussionSPCBorden, Callahan, Coke, Coleman, Concho, Crockett and 21 more2 hr
Dec 26, 8:58 PM CSTSevere Thunderstorm WatchSPCBandera, Crockett, Edwards, Gillespie, Kerr, Kimble and 11 more7 hr
Dec 26, 11:21 PM CSTMesoscale DiscussionSPCArmstrong, Bailey, Briscoe, Carson, Castro, Cochran and 17 more5 hr
Dec 26, 11:48 PM CSTMesoscale DiscussionSPCConcho, Edwards, Gillespie, Kerr, Kimble, Kinney and 11 more87 min
Dec 27, 5:15 AM CSTMesoscale DiscussionSPCAndrews, Cochran, Crane, Culberson, Ector, Gaines and 10 more5 hr
Dec 27, 5:44 AM CSTMesoscale DiscussionSPCAnderson, Angelina, Austin, Bastrop, Bowie, Brazos and 44 more3 hr
Dec 27, 8:56 AM CSTTornado WatchSPCAnderson, Angelina, Austin, Bowie, Brazos, Burleson and 42 more10 hr
Dec 27, 11:24 AM CSTMesoscale DiscussionSPCAndrews, Bailey, Borden, Castro, Cochran, Crane and 24 more6 hr
Dec 27, 12:45 PM CSTMesoscale DiscussionSPCAnderson, Angelina, Austin, Bowie, Brazos, Burleson and 42 more2 hr
Dec 27, 2:27 PM CSTMesoscale DiscussionSPCBowie, Cass, Harrison, Jasper, Jefferson, Marion and 8 more63 min
Dec 27, 2:47 PM CSTTornado WatchSPCAngelina, Bowie, Camp, Cass, Cherokee, Franklin and 18 more7 hr
Dec 27, 3:19 PM CSTMesoscale DiscussionSPCBrazoria, Chambers, Fort Bend, Galveston, Harris, Houston and 7 more116 min
Dec 27, 4:55 PM CSTMesoscale DiscussionSPCCass, Harrison, Marion, Nacogdoches, Panola, Rusk and 3 more2 hr

Nearby

Mesoscale Discussions in Oklahoma, 2015Mesoscale Discussions in Texas, 2015Every mesoscale discussion in 2015

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.