Alert archive / Oklahoma / Mesoscale Discussions in 2003

Mesoscale Discussion 1311

June 10, 20037 counties in Arkansas; 24 counties in Oklahoma; 10 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 10, 2003, 9:38 PM CDT for 7 counties in Arkansas; 24 counties in Oklahoma; 10 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jun 10, 2003, 9:38 PM CDT (02:38 UTC)
Expired
Jun 10, 2003, 11:45 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 41 counties

Benton County, AR, Crawford County, AR, Franklin County, AR, Polk County, AR, Scott County, AR, Sebastian County, AR, Washington County, AR, Adair County, OK, Atoka County, OK, Bryan County, OK, Cherokee County, OK, Choctaw County, OK, Coal County, OK, Delaware County, OK, Haskell County, OK, Hughes County, OK, Johnston County, OK, Latimer County, OK, LeFlore County, OK, Love County, OK, Marshall County, OK, Mayes County, OK, McCurtain County, OK, McIntosh County, OK, Muskogee County, OK, Okmulgee County, OK, Pittsburg County, OK, Pontotoc County, OK, Pushmataha County, OK, Sequoyah County, OK, Wagoner County, OK, Collin County, TX, Cooke County, TX, Delta County, TX, Denton County, TX, Fannin County, TX, Grayson County, TX, Jack County, TX, Lamar County, TX, Red River County, TX, Wise County, TX

The radar

The Norman radar (KTLX), 144 km from the middle of the area, began a volume at 02:39 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, 2.6 hours before the alert went out and 147 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 2003-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1988 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 2003-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 57 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
1988 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
1435 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
57 m²/s²
0-3 km storm-relative helicity
133 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.9

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 11, 1:48 AM CDTMesoscale DiscussionSPCBaxter, Boone, Carroll, Clark, Columbia, Conway and 37 more3 hr
Jun 11, 4:53 AM CDTMesoscale DiscussionSPCArkansas, Bradley, Chicot, Clay, Cleburne, Cleveland and 25 more3 hr
Jun 11, 6:10 AM CDTSevere Thunderstorm WatchSPCAshley, Bradley, Calhoun, Chicot, Clark, Cleveland and 12 more5 hr
Jun 11, 7:54 AM CDTMesoscale DiscussionSPCAshley, Bradley, Calhoun, Chicot, Clark, Cleveland and 12 more2 hr
Jun 11, 1:53 PM CDTMesoscale DiscussionSPCArkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 19 more67 min
Jun 11, 3:25 PM CDTMesoscale DiscussionSPCComanche, Cotton, Greer, Harmon, Jackson, Jefferson and 3 more2 hr
Jun 11, 4:40 PM CDTTornado WatchSPCBeaver, Beckham, Cotton, Ellis, Greer, Harmon and 5 more5 hr
Jun 11, 6:32 PM CDTMesoscale DiscussionSPCAlfalfa, Atoka, Blaine, Bryan, Caddo, Canadian and 32 more58 min
Jun 11, 1:20 AM CDTMesoscale DiscussionSPCAnderson, Archer, Bosque, Camp, Cherokee, Clay and 29 more115 min
Jun 11, 12:59 PM CDTMesoscale DiscussionSPCCrockett, Edwards, Kimble, Schleicher, Sutton, Terrell and 1 more91 min
Jun 11, 3:55 PM CDTTornado WatchSPCBorden, Callahan, Coke, Coleman, Concho, Crockett and 31 more5 hr

Nearby

Mesoscale Discussions in Oklahoma, 2003Mesoscale Discussions in Texas, 2003Mesoscale Discussions in Arkansas, 2003Every mesoscale discussion in 2003

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.