Alert archive / Oklahoma / Mesoscale Discussions in 2013

Mesoscale Discussion 1104

June 17, 2013Polk County, Sebastian County, Arkansas; 26 counties in Oklahoma; 24 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 17, 2013, 4:17 AM CDT for Polk County, Sebastian County, Arkansas; 26 counties in Oklahoma; 24 counties in Texas. It was in force for 118 min.

The area

The outline as issued.

The facts

Issued
Jun 17, 2013, 4:17 AM CDT (09:17 UTC)
Expired
Jun 17, 2013, 6:15 AM CDT
In force
118 min
Issued by
the Storm Prediction Center
All 52 counties

Polk County, AR, Sebastian County, AR, Atoka County, OK, Bryan County, OK, Carter County, OK, Choctaw County, OK, Coal County, OK, Cotton County, OK, Garvin County, OK, Haskell County, OK, Hughes County, OK, Jefferson County, OK, Johnston County, OK, Latimer County, OK, LeFlore County, OK, Love County, OK, Marshall County, OK, McCurtain County, OK, McIntosh County, OK, Murray County, OK, Muskogee County, OK, Okmulgee County, OK, Pittsburg County, OK, Pontotoc County, OK, Pushmataha County, OK, Seminole County, OK, Sequoyah County, OK, Stephens County, OK, Archer County, TX, Baylor County, TX, Clay County, TX, Collin County, TX, Cooke County, TX, Dallas County, TX, Delta County, TX, Denton County, TX, Fannin County, TX, Grayson County, TX, Hopkins County, TX, Hunt County, TX, Jack County, TX, Knox County, TX, Lamar County, TX, Montague County, TX, Parker County, TX, Red River County, TX, Rockwall County, TX, Tarrant County, TX, Throckmorton County, TX, Wichita County, TX, Wise County, TX, Young County, TX

The radar

The Norman radar (KTLX), 141 km from the middle of the area, began a volume at 09:18 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, 9.3 hours before the alert went out and 131 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 2013-06-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2304 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 2013-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 71 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
2304 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
1497 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
71 m²/s²
0-3 km storm-relative helicity
104 m²/s²
Significant tornado parameter
0.3
Supercell composite
4.1

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 17, 10:19 AM CDTMesoscale DiscussionSPCArkansas, Ashley, Bradley, Calhoun, Chicot, Cleveland and 8 more116 min
Jun 16, 8:16 PM CDTMesoscale DiscussionSPCAlfalfa, Beaver, Harper, Woods59 min
Jun 16, 8:40 PM CDTSevere Thunderstorm WatchSPCAlfalfa, Beaver, Blaine, Canadian, Custer, Dewey and 15 more5 hr
Jun 16, 10:58 PM CDTMesoscale DiscussionSPCAlfalfa, Ellis, Harper, Major, Woods, Woodward62 min
Jun 17, 12:48 AM CDTMesoscale DiscussionSPCBeckham, Blaine, Caddo, Canadian, Carter, Cleveland and 37 more117 min
Jun 17, 1:02 AM CDTSevere Thunderstorm WatchSPCBeckham, Blaine, Caddo, Canadian, Carter, Cleveland and 35 more6 hr
Jun 17, 3:54 PM CDTSevere Thunderstorm WatchSPCCimarron, Texas7 hr
Jun 17, 2:15 PM CDTMesoscale DiscussionSPCAndrews, Bailey, Castro, Cochran, Crane, Culberson and 26 more90 min
Jun 17, 3:45 PM CDTMesoscale DiscussionSPCPalo Pinto, Parker, Stephens, Tarrant, Throckmorton, Young60 min

Nearby

Mesoscale Discussions in Oklahoma, 2013Mesoscale Discussions in Texas, 2013Mesoscale Discussions in Arkansas, 2013Every mesoscale discussion in 2013

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.