Alert archive / Oklahoma / Mesoscale Discussions in 2016

Mesoscale Discussion 753

May 26, 201619 counties in Oklahoma; 4 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 26, 2016, 7:46 PM CDT for 19 counties in Oklahoma; 4 counties in Texas. It was in force for 59 min.

The area

The outline as issued.

The facts

Issued
May 26, 2016, 7:46 PM CDT (00:46 UTC)
Expired
May 26, 2016, 8:45 PM CDT
In force
59 min
Issued by
the Storm Prediction Center
All 23 counties

Beckham County, OK, Blaine County, OK, Caddo County, OK, Comanche County, OK, Cotton 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, Tillman County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Foard County, TX, Hardeman County, TX, Wichita County, TX, Wilbarger County, TX

The radar

The Altus AFB radar (KFDR), 136 km from the middle of the area, began a volume at 00:49 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, 0.8 hours before the alert went out and 166 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 2016-05-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 655 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, Norman, OK at 00:00Z on 2016-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 173 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
655 J/kg
Mixed-layer CIN
-165 J/kg
Mixed-layer LCL
1432 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
173 m²/s²
0-3 km storm-relative helicity
209 m²/s²
Significant tornado parameter
0.1
Supercell composite
8.5

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 26, 8:52 PM CDTMesoscale DiscussionSPCAlfalfa, Beckham, Custer, Dewey, Ellis, Greer and 8 more53 min
May 27, 1:02 PM CDTMesoscale DiscussionSPCAlfalfa, Blaine, Caddo, Canadian, Cleveland, Creek and 19 more88 min
May 27, 2:32 PM CDTSevere Thunderstorm WatchSPCAlfalfa, Beckham, Blaine, Caddo, Canadian, Carter and 35 more7 hr
May 27, 5:13 PM CDTMesoscale DiscussionSPCCanadian, Cleveland, Garfield, Garvin, Grady, Grant and 11 more92 min
May 26, 7:33 PM CDTSevere Thunderstorm WatchSPCBosque, Comanche, Dallas, Eastland, Ellis, Erath and 12 more5 hr
May 26, 9:14 PM CDTMesoscale DiscussionSPCArcher, Bandera, Baylor, Brown, Burnet, Callahan and 47 more61 min
May 26, 10:04 PM CDTMesoscale DiscussionSPCBastrop, Bexar, Blanco, Caldwell, Comal, Fayette and 6 more56 min
May 26, 10:17 PM CDTSevere Thunderstorm WatchSPCBandera, Bastrop, Blanco, Burnet, Caldwell, Comal and 9 more6 hr
May 26, 11:06 PM CDTMesoscale DiscussionSPCCoryell, Dallas, Ellis, Hill, McLennan84 min
May 27, 1:30 AM CDTMesoscale DiscussionSPCBrown, Callahan, Coleman, Comanche, Concho, Eastland and 9 more60 min
May 27, 2:14 AM CDTMesoscale DiscussionSPCAustin, Chambers, Colorado, Fayette, Fort Bend, Harris and 4 more61 min
May 27, 2:38 AM CDTSevere Thunderstorm WatchSPCAustin, Brazoria, Chambers, Colorado, Fort Bend, Galveston and 16 more5 hr
May 27, 5:50 AM CDTMesoscale DiscussionSPCChambers, Hardin, Jasper, Jefferson, Newton, Orange and 1 more25 min
May 27, 12:57 PM CDTMesoscale DiscussionSPCAngelina, Austin, Bastrop, Brazoria, Caldwell, Chambers and 28 more63 min
May 27, 2:04 PM CDTSevere Thunderstorm WatchSPCChambers, Hardin, Jasper, Jefferson, Liberty, Newton and 3 more6 hr
May 27, 4:03 PM CDTMesoscale DiscussionSPCAustin, Bee, Brazoria, Calhoun, Chambers, Colorado and 27 more117 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.