Alert archive / Oklahoma / Mesoscale Discussions in 2004

Mesoscale Discussion 1337

June 18, 2004Little River County, Arkansas; 32 counties in Oklahoma; 15 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 18, 2004, 3:51 PM CDT for Little River County, Arkansas; 32 counties in Oklahoma; 15 counties in Texas. It was in force for 114 min.

The area

The outline as issued.

The facts

Issued
Jun 18, 2004, 3:51 PM CDT (20:51 UTC)
Expired
Jun 18, 2004, 5:45 PM CDT
In force
114 min
Issued by
the Storm Prediction Center
All 48 counties

Little River County, AR, Atoka County, OK, Bryan County, OK, Caddo 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, Haskell County, OK, Hughes County, OK, Jackson County, OK, Jefferson County, OK, Johnston County, OK, Kiowa County, OK, Latimer County, OK, LeFlore County, OK, Love County, OK, Marshall County, OK, McClain County, OK, McCurtain 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, Tillman County, OK, Archer County, TX, Baylor County, TX, Clay County, TX, Cooke County, TX, Delta County, TX, Denton County, TX, Fannin County, TX, Grayson County, TX, Jack County, TX, Lamar County, TX, Montague County, TX, Red River County, TX, Wichita County, TX, Wilbarger County, TX, Wise County, TX

The radar

The Norman radar (KTLX), 158 km from the middle of the area, began a volume at 20:51 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, 8.9 hours before the alert went out and 150 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 2004-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1190 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 2004-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 72 square meters per square second.1939Sfc1 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
1190 J/kg
Mixed-layer CIN
-65 J/kg
Mixed-layer LCL
898 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
72 m²/s²
0-3 km storm-relative helicity
83 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.6

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
Jun 18, 10:49 AM CDTMesoscale DiscussionSPCBenton, Crawford, Franklin, Garland, Johnson, Logan and 8 more116 min
Jun 17, 7:38 PM CDTMesoscale DiscussionSPCBeaver, Cimarron, Texas2 hr
Jun 17, 9:19 PM CDTMesoscale DiscussionSPCAlfalfa, Beaver, Beckham, Blaine, Caddo, Comanche and 15 more26 min
Jun 17, 9:40 PM CDTSevere Thunderstorm WatchSPCBeaver, Beckham, Blaine, Custer, Dewey, Ellis and 9 more5 hr
Jun 17, 11:44 PM CDTMesoscale DiscussionSPCAlfalfa, Blaine, Canadian, Custer, Dewey, Garfield and 10 more91 min
Jun 17, 11:50 PM CDTSevere Thunderstorm WatchSPCAlfalfa, Blaine, Garfield, Grant, Kay, Kingfisher and 5 more4 hr
Jun 18, 1:29 AM CDTMesoscale DiscussionSPCAlfalfa, Blaine, Craig, Creek, Garfield, Grant and 16 more91 min
Jun 18, 3:30 PM CDTSevere Thunderstorm WatchSPCBeaver, Cimarron, Texas7 hr
Jun 18, 2:28 PM CDTMesoscale DiscussionSPCArmstrong, Bailey, Briscoe, Castro, Cochran, Crosby and 13 more2 hr
Jun 18, 6:01 PM CDTMesoscale DiscussionSPCCulberson, Jeff Davis, Loving, Presidio, Reeves, Ward and 1 more59 min

Nearby

Mesoscale Discussions in Oklahoma, 2004Mesoscale Discussions in Texas, 2004Mesoscale Discussions in Arkansas, 2004Every mesoscale discussion in 2004

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.