Alert archive / Texas / Mesoscale Discussions in 2014

Mesoscale Discussion 390

April 23, 201415 counties in Kansas; 21 counties in Oklahoma; 34 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 23, 2014, 6:54 PM CDT for 15 counties in Kansas; 21 counties in Oklahoma; 34 counties in Texas. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued
Apr 23, 2014, 6:54 PM CDT (23:54 UTC)
Expired
Apr 23, 2014, 8:30 PM CDT
In force
96 min
Issued by
the Storm Prediction Center
All 70 counties

Barber County, KS, Clark County, KS, Comanche County, KS, Edwards County, KS, Finney County, KS, Ford County, KS, Gray County, KS, Haskell County, KS, Hodgeman County, KS, Kiowa County, KS, Meade County, KS, Pawnee County, KS, Pratt County, KS, Seward County, KS, Stafford County, KS, Alfalfa County, OK, Beaver County, OK, 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, Archer County, TX, Baylor County, TX, Callahan County, TX, Childress County, TX, Clay County, TX, Collingsworth County, TX, Cottle County, TX, Dickens County, TX, Donley County, TX, Fisher County, TX, Foard County, TX, Gray County, TX, Hall County, TX, Hardeman County, TX, Haskell County, TX, Hemphill County, TX, Jones County, TX, Kent County, TX, King County, TX, Knox County, TX, Lipscomb County, TX, Mitchell County, TX, Motley County, TX, Nolan County, TX, Ochiltree County, TX, Roberts County, TX, Scurry County, TX, Shackelford County, TX, Stonewall County, TX, Taylor County, TX, Throckmorton County, TX, Wheeler County, TX, Wichita County, TX, Wilbarger County, TX

The radar

The Altus AFB radar (KFDR), 59 km from the middle of the area, began a volume at 23:57 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, 11.9 hours before the alert went out and 199 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 12:00Z on 2014-04-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2014-04-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 88 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1877 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
88 m²/s²
0-3 km storm-relative helicity
111 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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
Apr 23, 2:34 PM CDTMesoscale DiscussionSPCBarton, Ellis, Gove, Graham, Jewell, Lane and 11 more2 hr
Apr 23, 2:37 PM CDTMesoscale DiscussionSPCClark, Comanche, Edwards, Finney, Ford, Gray and 5 more113 min
Apr 23, 3:04 PM CDTSevere Thunderstorm WatchSPCBarton, Cloud, Decatur, Ellis, Gove, Graham and 19 more8 hr
Apr 23, 3:32 PM CDTMesoscale DiscussionSPCCheyenne2 hr
Apr 23, 3:44 PM CDTSevere Thunderstorm WatchSPCBarber, Clark, Comanche, Edwards, Finney, Ford and 9 more7 hr
Apr 23, 6:16 PM CDTMesoscale DiscussionSPCBarton, Cloud, Decatur, Ellis, Gove, Graham and 18 more59 min
Apr 23, 3:54 PM CDTMesoscale DiscussionSPCCoke, Concho, Crockett, Edwards, Irion, Kimble and 10 more2 hr

Nearby

Mesoscale Discussions in Texas, 2014Mesoscale Discussions in Oklahoma, 2014Mesoscale Discussions in Kansas, 2014Every mesoscale discussion in 2014

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.