Alert archive / Texas / Mesoscale Discussions in 2007

Mesoscale Discussion 1064

June 8, 2007Union County, Arkansas; 21 parishes in Louisiana; 43 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 8, 2007, 2:12 PM CDT for Union County, Arkansas; 21 parishes in Louisiana; 43 counties in Texas. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
Jun 8, 2007, 2:12 PM CDT (19:12 UTC)
Expired
Jun 8, 2007, 4:45 PM CDT
In force
3 hr
Issued by
the Storm Prediction Center
All 65 counties

Union County, AR, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Caldwell Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Franklin Parish, LA, Grant Parish, LA, Jackson Parish, LA, LaSalle Parish, LA, Lincoln Parish, LA, Morehouse Parish, LA, Natchitoches Parish, LA, Ouachita Parish, LA, Red River Parish, LA, Richland Parish, LA, Sabine Parish, LA, Union Parish, LA, Webster Parish, LA, West Carroll Parish, LA, Winn Parish, LA, Anderson County, TX, Angelina County, TX, Bastrop County, TX, Bell County, TX, Blanco County, TX, Brazos County, TX, Burleson County, TX, Burnet County, TX, Caldwell County, TX, Cass County, TX, Cherokee County, TX, Comal County, TX, Coryell County, TX, Falls County, TX, Freestone County, TX, Gregg County, TX, Grimes County, TX, Harrison County, TX, Hays County, TX, Henderson County, TX, Houston County, TX, Lee County, TX, Leon County, TX, Limestone County, TX, Madison County, TX, Marion County, TX, McLennan County, TX, Milam County, TX, Nacogdoches County, TX, Panola County, TX, Polk County, TX, Robertson County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, Shelby County, TX, Smith County, TX, Travis County, TX, Trinity County, TX, Upshur County, TX, Walker County, TX, Washington County, TX, Williamson County, TX

The radar

The Shreveport radar (KSHV), 148 km from the middle of the area, began a volume at 19:13 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 12:00Z, 7.2 hours before the alert went out and 157 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 12:00Z on 2007-06-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3702 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 12:00Z on 2007-06-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 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
3702 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
534 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
210 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 7, 11:12 PM CDTMesoscale DiscussionSPCBenton, Carroll, Washington93 min
Jun 7, 11:43 PM CDTSevere Thunderstorm WatchSPCBenton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more7 hr
Jun 8, 6:23 AM CDTMesoscale DiscussionSPCBaxter, Clay, Cleburne, Franklin, Fulton, Greene and 11 more67 min
Jun 8, 8:32 AM CDTMesoscale DiscussionSPCArkansas, Ashley, Bradley, Calhoun, Clark, Cleburne and 42 more58 min
Jun 8, 9:03 AM CDTSevere Thunderstorm WatchSPCArkansas, Bradley, Calhoun, Clark, Cleburne, Cleveland and 38 more7 hr
Jun 8, 3:25 PM CDTMesoscale DiscussionSPCArkansas, Bradley, Calhoun, Clark, Cleveland, Dallas and 11 more95 min
Jun 7, 7:08 PM CDTMesoscale DiscussionSPCArcher, Clay, Cooke, Denton, Jack, Montague and 2 more2 hr
Jun 8, 5:24 PM CDTMesoscale DiscussionSPCBrewster, Jeff Davis, Presidio2 hr
Jun 8, 6:36 PM CDTMesoscale DiscussionSPCAnderson, Bell, Burnet, Cherokee, Coryell, Falls and 19 more114 min

Nearby

Mesoscale Discussions in Texas, 2007Mesoscale Discussions in Louisiana, 2007Mesoscale Discussions in Arkansas, 2007Every mesoscale discussion in 2007

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.