Alert archive / Texas / Mesoscale Discussions in 2008

Mesoscale Discussion 616

April 10, 200810 counties in Arkansas; LeFlore County, McCurtain County, Oklahoma; 16 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 10, 2008, 5:55 AM CDT for 10 counties in Arkansas; LeFlore County, McCurtain County, Oklahoma; 16 counties in Texas. It was in force for 65 min.

The area

The outline as issued.

The facts

Issued
Apr 10, 2008, 5:55 AM CDT (10:55 UTC)
Expired
Apr 10, 2008, 7:00 AM CDT
In force
65 min
Issued by
the Storm Prediction Center
All 28 counties

Crawford County, AR, Franklin County, AR, Howard County, AR, Johnson County, AR, Little River County, AR, Logan County, AR, Polk County, AR, Scott County, AR, Sebastian County, AR, Sevier County, AR, LeFlore County, OK, McCurtain County, OK, Anderson County, TX, Bowie County, TX, Camp County, TX, Cherokee County, TX, Franklin County, TX, Freestone County, TX, Gregg County, TX, Henderson County, TX, Hopkins County, TX, Morris County, TX, Red River County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Van Zandt County, TX, Wood County, TX

The radar

The Shreveport radar (KSHV), 150 km from the middle of the area, began a volume at 10:58 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

Shreveport, LA (KSHV), launched 00:00Z, 10.9 hours before the alert went out and 154 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 2008-04-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1185 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 2008-04-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 206 square meters per square second.1939587897Sfc1 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
1185 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
973 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
206 m²/s²
0-3 km storm-relative helicity
330 m²/s²
Significant tornado parameter
1.8
Supercell composite
7.2

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 9, 7:28 PM CDTMesoscale DiscussionSPCCrawford, Franklin, Hempstead, Howard, Johnson, Little River and 8 more62 min
Apr 9, 8:10 PM CDTTornado WatchSPCHempstead, Howard, Johnson, Little River, Logan, Montgomery and 6 more6 hr
Apr 9, 10:40 PM CDTTornado WatchSPCCrawford, Franklin, Sebastian7 hr
Apr 10, 1:45 AM CDTTornado WatchSPCBaxter, Boone, Cleburne, Conway, Faulkner, Fulton and 16 more8 hr
Apr 10, 3:00 AM CDTMesoscale DiscussionSPCClay, Craighead, Crittenden, Cross, Greene, Mississippi and 1 more60 min
Apr 10, 3:28 AM CDTTornado WatchSPCClay, Craighead, Crittenden, Cross, Greene, Lawrence and 4 more7 hr
Apr 10, 3:54 AM CDTTornado WatchSPCBenton, Carroll, Crawford, Franklin, Hempstead, Howard and 10 more8 hr
Apr 10, 8:32 AM CDTMesoscale DiscussionSPCAshley, Bradley, Calhoun, Clark, Cleveland, Columbia and 22 more58 min
Apr 10, 8:42 AM CDTTornado WatchSPCArkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 19 more7 hr
Apr 10, 9:27 AM CDTMesoscale DiscussionSPCClay, Cleburne, Conway, Craighead, Crittenden, Cross and 16 more2 hr
Apr 10, 9:51 AM CDTTornado WatchSPCClay, Cleburne, Conway, Craighead, Crittenden, Cross and 19 more7 hr
Apr 10, 10:51 AM CDTMesoscale DiscussionSPCArkansas, Ashley, Bradley, Calhoun, Clay, Cleveland and 28 more84 min
Apr 10, 1:41 PM CDTMesoscale DiscussionSPCArkansas, Ashley, Bradley, Calhoun, Clay, Cleveland and 20 more2 hr
Apr 9, 8:13 PM CDTMesoscale DiscussionSPCAtoka, Bryan, Carter, Choctaw, Coal, Garvin and 9 more62 min
Apr 9, 10:01 PM CDTMesoscale DiscussionSPCAtoka, Bryan, Carter, Choctaw, Coal, Garvin and 14 more59 min
Apr 9, 11:22 PM CDTMesoscale DiscussionSPCBeckham, Blaine, Caddo, Canadian, Cleveland, Comanche and 16 more53 min
Apr 10, 1:36 AM CDTMesoscale DiscussionSPCBryan, Carter, Jefferson, Johnston, Love, Marshall and 1 more54 min
Apr 10, 3:30 AM CDTMesoscale DiscussionSPCAtoka, Bryan, Choctaw, Coal, Haskell, Latimer and 8 more60 min
Apr 10, 3:30 PM CDTMesoscale DiscussionSPCAlfalfa, Ellis, Grant, Harper, Kay, Woods and 1 more75 min
Apr 9, 7:44 PM CDTTornado WatchSPCBorden, Brown, Callahan, Coke, Coleman, Concho and 34 more8 hr
Apr 9, 11:46 PM CDTMesoscale DiscussionSPCAndrews, Borden, Brown, Callahan, Coke, Coleman and 35 more59 min

Nearby

Mesoscale Discussions in Texas, 2008Mesoscale Discussions in Arkansas, 2008Mesoscale Discussions in Oklahoma, 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; radar from the NEXRAD Level II archive.