Alert archive / Arkansas / Mesoscale Discussions in 2008

Mesoscale Discussion 545

April 3, 200852 counties in Arkansas; 34 counties in Oklahoma; 22 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 3, 2008, 7:59 PM CDT for 52 counties in Arkansas; 34 counties in Oklahoma; 22 counties in Texas. It was in force for 91 min.

The area

The outline as issued.

The facts

Issued
Apr 3, 2008, 7:59 PM CDT (00:59 UTC)
Expired
Apr 3, 2008, 9:30 PM CDT
In force
91 min
Issued by
the Storm Prediction Center
All 108 counties

Baxter County, AR, Benton County, AR, Boone County, AR, Calhoun County, AR, Carroll County, AR, Clark County, AR, Cleburne County, AR, Cleveland County, AR, Conway County, AR, Crawford County, AR, Dallas County, AR, Faulkner County, AR, Franklin County, AR, Garland County, AR, Grant County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Jefferson County, AR, Johnson County, AR, Lincoln County, AR, Little River County, AR, Logan County, AR, Lonoke County, AR, Madison County, AR, Marion County, AR, Miller County, AR, Montgomery County, AR, Nevada County, AR, Newton County, AR, Ouachita County, AR, Perry County, AR, Pike County, AR, Polk County, AR, Pope County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, Scott County, AR, Searcy County, AR, Sebastian County, AR, Sevier County, AR, Sharp County, AR, Stone County, AR, Van Buren County, AR, Washington County, AR, White County, AR, Woodruff County, AR, Yell County, AR, Adair County, OK, Atoka County, OK, Bryan County, OK, Carter County, OK, Cherokee County, OK, Choctaw County, OK, Cleveland County, OK, Coal County, OK, Comanche 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, McClain County, OK, McCurtain County, OK, McIntosh County, OK, Murray County, OK, Muskogee County, OK, Okfuskee County, OK, Okmulgee County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Pushmataha County, OK, Seminole County, OK, Sequoyah County, OK, Stephens County, OK, Wagoner County, OK, Bowie County, TX, Camp County, TX, Cass County, TX, Clay County, TX, Collin County, TX, Cooke County, TX, Delta County, TX, Denton County, TX, Fannin County, TX, Franklin County, TX, Grayson County, TX, Hopkins County, TX, Hunt County, TX, Lamar County, TX, Montague County, TX, Morris County, TX, Rains County, TX, Red River County, TX, Rockwall County, TX, Titus County, TX, Wise County, TX, Wood County, TX

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 1.0 hours before the alert went out and 240 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, Shreveport, LA at 00:00Z on 2008-04-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1498 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, Shreveport, LA at 00:00Z on 2008-04-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 125 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
1498 J/kg
Mixed-layer CIN
-44 J/kg
Mixed-layer LCL
1191 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
125 m²/s²
0-3 km storm-relative helicity
142 m²/s²
Significant tornado parameter
1.1
Supercell composite
6.5

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
Apr 3, 8:21 PM CDTSevere Thunderstorm WatchSPCArkansas, Baxter, Benton, Boone, Calhoun, Carroll and 52 more8 hr
Apr 3, 9:49 PM CDTMesoscale DiscussionSPCArkansas, Baxter, Boone, Clark, Clay, Cleburne and 55 more86 min
Apr 3, 10:23 PM CDTSevere Thunderstorm WatchSPCClay, Craighead, Crittenden, Cross, Greene, Lawrence and 6 more4 hr
Apr 3, 11:19 PM CDTMesoscale DiscussionSPCArkansas, Calhoun, Clark, Clay, Cleburne, Cleveland and 45 more86 min
Apr 4, 12:48 AM CDTMesoscale DiscussionSPCBradley, Calhoun, Columbia, Hempstead, Lafayette, Little River and 4 more117 min
Apr 4, 1:28 AM CDTMesoscale DiscussionSPCCrittenden, Lee2 hr
Apr 4, 2:46 AM CDTSevere Thunderstorm WatchSPCLee, Phillips8 hr
Apr 4, 3:34 AM CDTMesoscale DiscussionSPCArkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 15 more56 min
Apr 4, 3:55 AM CDTSevere Thunderstorm WatchSPCArkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 19 more7 hr
Apr 4, 7:55 AM CDTMesoscale DiscussionSPCAshley, Chicot2 hr
Apr 3, 8:33 PM CDTSevere Thunderstorm WatchSPCAtoka, Bryan, Carter, Coal, Comanche, Cotton and 10 more9 hr
Apr 4, 1:22 AM CDTSevere Thunderstorm WatchSPCBandera, Bell, Blanco, Bosque, Brown, Burnet and 47 more9 hr
Apr 4, 4:14 AM CDTMesoscale DiscussionSPCAnderson, Bandera, Bastrop, Bell, Bexar, Blanco and 48 more91 min
Apr 4, 5:34 AM CDTSevere Thunderstorm WatchSPCAnderson, Angelina, Austin, Bastrop, Brazos, Burleson and 32 more6 hr
Apr 4, 9:48 AM CDTTornado WatchSPCHardin, Jasper, Newton, Tyler9 hr
Apr 4, 4:06 PM CDTMesoscale DiscussionSPCHardin, Newton, Orange84 min

Nearby

Mesoscale Discussions in Arkansas, 2008Mesoscale Discussions in Oklahoma, 2008Mesoscale Discussions in Texas, 2008Every mesoscale discussion in 2008

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.