Alert archive / Oklahoma / Mesoscale Discussions in 2019

Mesoscale Discussion 796

May 25, 20199 counties in Kansas; 41 counties in Oklahoma; 29 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 25, 2019, 5:56 PM CDT for 9 counties in Kansas; 41 counties in Oklahoma; 29 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 25, 2019, 5:56 PM CDT (22:56 UTC)
Expired
May 25, 2019, 8:00 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 79 counties

Barber County, KS, Clark County, KS, Comanche County, KS, Harper County, KS, Kingman County, KS, Kiowa County, KS, Meade County, KS, Seward County, KS, Sumner County, KS, Alfalfa County, OK, Beaver County, OK, Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Cleveland County, OK, Comanche County, OK, Cotton County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Garfield County, OK, Garvin County, OK, Grady County, OK, Grant County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Jackson County, OK, Jefferson County, OK, Kay County, OK, Kingfisher County, OK, Kiowa County, OK, Lincoln County, OK, Logan County, OK, Major County, OK, McClain County, OK, Murray County, OK, Noble County, OK, Oklahoma County, OK, Pawnee County, OK, Payne County, OK, Pottawatomie County, OK, Roger Mills County, OK, Seminole County, OK, Stephens County, OK, Tillman County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Archer County, TX, Baylor County, TX, Briscoe County, TX, Childress County, TX, Clay 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, Hall County, TX, Hardeman County, TX, Haskell County, TX, Hemphill County, TX, Kent County, TX, King County, TX, Knox County, TX, Lipscomb County, TX, Motley County, TX, Ochiltree County, TX, Roberts County, TX, Stonewall County, TX, Wheeler County, TX, Wichita County, TX, Wilbarger County, TX

The radar

The Altus AFB radar (KFDR), 130 km from the middle of the area, began a volume at 22:58 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

Norman, OK (KOUN), launched 12:00Z, 10.9 hours before the alert went out and 142 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 2019-05-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 216 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 12:00Z on 2019-05-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 289 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
216 J/kg
Mixed-layer CIN
-304 J/kg
Mixed-layer LCL
997 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
289 m²/s²
0-3 km storm-relative helicity
243 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

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 24, 7:56 PM CDTMesoscale DiscussionSPCChautauqua, Labette, Montgomery, Wilson64 min
May 24, 8:30 PM CDTMesoscale DiscussionSPCBourbon, Linn2 hr
May 24, 9:16 PM CDTMesoscale DiscussionSPCBourbon, Cherokee, Crawford, Labette29 min
May 25, 2:46 PM CDTMesoscale DiscussionSPCBarber, Barton, Clark, Comanche, Edwards, Ellis and 25 more2 hr
May 25, 3:03 PM CDTSevere Thunderstorm WatchSPCEdwards, Ellis, Finney, Ford, Gove, Graham and 23 more6 hr
May 25, 3:06 PM CDTMesoscale DiscussionSPCClark, Comanche, Meade, Seward, Stevens114 min
May 25, 3:24 PM CDTMesoscale DiscussionSPCJohnson, Leavenworth, Wyandotte3 hr
May 25, 3:24 PM CDTTornado WatchSPCBarber, Clark, Comanche, Meade, Seward7 hr
May 25, 5:23 PM CDTSevere Thunderstorm WatchSPCDoniphan6 hr
May 25, 6:19 PM CDTSevere Thunderstorm WatchSPCBarton, Butler, Chase, Cowley, Ellsworth, Harper and 11 more7 hr
May 25, 6:49 PM CDTMesoscale DiscussionSPCEdwards, Ellis, Finney, Ford, Gove, Graham and 21 more116 min
May 25, 12:59 PM CDTSevere Thunderstorm WatchSPCCimarron, Texas7 hr
May 25, 3:49 PM CDTMesoscale DiscussionSPCCimarron, Texas116 min
May 24, 8:18 PM CDTMesoscale DiscussionSPCHockley, Lamb, Lubbock57 min
May 25, 12:12 PM CDTMesoscale DiscussionSPCAndrews, Bailey, Castro, Cochran, Dallam, Deaf Smith and 8 more2 hr
May 25, 1:38 PM CDTMesoscale DiscussionSPCBrewster, Crane, Ector, Loving, Midland, Pecos and 5 more2 hr
May 25, 1:51 PM CDTSevere Thunderstorm WatchSPCAndrews, Crane, Dawson, Ector, Gaines, Loving and 8 more7 hr
May 25, 5:35 PM CDTMesoscale DiscussionSPCAndrews, Crane, Dawson, Ector, Gaines, Martin and 6 more115 min
May 25, 6:25 PM CDTMesoscale DiscussionSPCArmstrong, Bailey, Carson, Castro, Cochran, Deaf Smith and 12 more95 min

Nearby

Mesoscale Discussions in Oklahoma, 2019Mesoscale Discussions in Texas, 2019Mesoscale Discussions in Kansas, 2019Every mesoscale discussion in 2019

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.