Alert archive / Arkansas / Mesoscale Discussions in 2004

Mesoscale Discussion 1348

June 19, 200426 counties in Arkansas; 10 parishes in Louisiana; 14 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 19, 2004, 3:43 PM CDT for 26 counties in Arkansas; 10 parishes in Louisiana; 14 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jun 19, 2004, 3:43 PM CDT (20:43 UTC)
Expired: Jun 19, 2004, 5:45 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center

All 50 counties

Bradley County, AR, Calhoun County, AR, Clark County, AR, Cleveland County, AR, Columbia County, AR, Conway County, AR, Dallas County, AR, Faulkner County, AR, Garland County, AR, Grant County, AR, Hempstead County, AR, Hot Spring County, AR, Lafayette County, AR, Logan County, AR, Miller County, AR, Montgomery County, AR, Nevada County, AR, Ouachita County, AR, Perry County, AR, Pike County, AR, Pope County, AR, Pulaski County, AR, Saline County, AR, Union County, AR, Van Buren County, AR, Yell County, AR, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Jackson Parish, LA, Lincoln Parish, LA, Red River Parish, LA, Union Parish, LA, Webster Parish, LA, Anderson County, TX, Cherokee County, TX, Gregg County, TX, Harrison County, TX, Henderson County, TX, Marion County, TX, Nacogdoches County, TX, Panola County, TX, Rusk County, TX, Shelby County, TX, Smith County, TX, Upshur County, TX, Van Zandt County, TX, Wood County, TX

The radar

The Shreveport radar (KSHV), 108 km from the middle of the area, began a volume at 20:46 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, 8.7 hours before the alert went out and 106 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1539 J/kg
Mixed-layer CIN: -45 J/kg
Mixed-layer LCL: 948 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: -24 m²/s²
0-3 km storm-relative helicity: 24 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.

Issued	Product	Office	Counties	Lasted
Jun 19, 12:59 PM CDT	Mesoscale Discussion	SPC	Crawford, Franklin, Hempstead, Howard, Little River, Logan and 8 more	2 hr
Jun 18, 7:30 PM CDT	Mesoscale Discussion	SPC	Armstrong, Bailey, Briscoe, Carson, Castro, Childress and 32 more	90 min
Jun 18, 9:11 PM CDT	Mesoscale Discussion	SPC	Armstrong, Bailey, Briscoe, Carson, Castro, Childress and 32 more	34 min
Jun 18, 9:15 PM CDT	Severe Thunderstorm Watch	SPC	Armstrong, Bailey, Briscoe, Carson, Castro, Childress and 32 more	6 hr
Jun 18, 11:56 PM CDT	Mesoscale Discussion	SPC	Armstrong, Briscoe, Carson, Childress, Collingsworth, Cottle and 26 more	94 min

Nearby

Mesoscale Discussions in Arkansas, 2004 Mesoscale Discussions in Texas, 2004 Mesoscale Discussions in Louisiana, 2004 Every mesoscale discussion in 2004

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.