Alert archive / Oklahoma / Mesoscale Discussions in 2019

Mesoscale Discussion 876

May 29, 201925 counties in Oklahoma; 13 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 29, 2019, 7:31 AM CDT for 25 counties in Oklahoma; 13 counties in Texas. It was in force for 119 min.

The area

The outline as issued.

The facts

Issued
May 29, 2019, 7:31 AM CDT (12:31 UTC)
Expired
May 29, 2019, 9:30 AM CDT
In force
119 min
Issued by
the Storm Prediction Center
Chance of a watch
80%
All 38 counties

Atoka County, OK, Bryan County, OK, Carter County, OK, Choctaw County, OK, Cleveland County, OK, Coal County, OK, Comanche County, OK, Cotton County, OK, Garvin County, OK, Grady County, OK, Hughes County, OK, Jefferson County, OK, Johnston County, OK, Latimer County, OK, Love County, OK, Marshall County, OK, McClain County, OK, McIntosh County, OK, Murray County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Pushmataha County, OK, Seminole County, OK, Stephens County, OK, Archer County, TX, Clay County, TX, Collin County, TX, Cooke County, TX, Denton County, TX, Fannin County, TX, Grayson County, TX, Jack County, TX, Lamar County, TX, Montague County, TX, Wichita County, TX, Wise County, TX, Young County, TX

The radar

The Norman radar (KTLX), 110 km from the middle of the area, began a volume at 12:30 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, 0.5 hours before the alert went out and 100 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 2019-05-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3136 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 2019-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 186 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
3136 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
578 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
186 m²/s²
0-3 km storm-relative helicity
192 m²/s²
Significant tornado parameter
3.5
Supercell composite
14.1

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, 8:05 PM CDTMesoscale DiscussionSPCCaddo, Canadian, Cleveland, Comanche, Creek, Garfield and 14 more85 min
May 29, 1:07 AM CDTMesoscale DiscussionSPCAdair, Cherokee, Haskell, Latimer, LeFlore, McIntosh and 4 more113 min
May 29, 1:39 AM CDTSevere Thunderstorm WatchSPCAdair, Cherokee, Haskell, Latimer, LeFlore, Sequoyah3 hr
May 29, 9:40 AM CDTMesoscale DiscussionSPCAdair, Atoka, Bryan, Carter, Cherokee, Coal and 25 more65 min
May 29, 10:04 AM CDTSevere Thunderstorm WatchSPCAdair, Atoka, Bryan, Carter, Cherokee, Choctaw and 27 more7 hr
May 29, 12:18 PM CDTMesoscale DiscussionSPCBryan, Choctaw, LeFlore, McCurtain, Pushmataha87 min
May 29, 12:46 PM CDTTornado WatchSPCChoctaw, Haskell, Latimer, LeFlore, McCurtain, Pushmataha and 1 more9 hr
May 29, 1:32 PM CDTMesoscale DiscussionSPCAdair, Atoka, Bryan, Cherokee, Coal, McIntosh and 2 more58 min
May 29, 3:12 PM CDTMesoscale DiscussionSPCChoctaw, LeFlore, McCurtain, Pushmataha63 min
May 29, 6:22 PM CDTTornado WatchSPCMcCurtain7 hr
May 28, 11:48 PM CDTMesoscale DiscussionSPCCrane, Ector, Glasscock, Midland, Pecos, Reagan and 3 more117 min
May 29, 1:56 AM CDTSevere Thunderstorm WatchSPCAndrews, Borden, Callahan, Coke, Crane, Dawson and 24 more8 hr
May 29, 4:50 AM CDTMesoscale DiscussionSPCArcher, Baylor, Coke, Ector, Fisher, Glasscock and 18 more115 min
May 29, 8:39 AM CDTSevere Thunderstorm WatchSPCCooke, Denton, Eastland, Erath, Grayson, Hood and 8 more4 hr
May 29, 9:04 AM CDTMesoscale DiscussionSPCAndrews, Baylor, Borden, Callahan, Coke, Crane and 19 more86 min
May 29, 2:14 PM CDTMesoscale DiscussionSPCCrockett, Edwards, Gillespie, Kerr, Kimble, Mason and 5 more2 hr

Nearby

Mesoscale Discussions in Oklahoma, 2019Mesoscale Discussions in Texas, 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.