Alert archive / Texas / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 983

December 22, 20034 states

The Storm Prediction Center issued this severe thunderstorm watch at Dec 22, 2003, 8:00 PM CST for 4 states. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Dec 22, 2003, 8:00 PM CST (02:00 UTC)
Expired: Dec 23, 2003, 1:00 AM CST
In force: 5 hr
Issued by: the Storm Prediction Center

All 43 counties

Clark County, AR, Columbia County, AR, Dallas County, AR, Hempstead County, AR, Howard County, AR, Lafayette County, AR, Little River County, AR, Miller County, AR, Nevada County, AR, Ouachita County, AR, Pike County, AR, Sevier County, AR, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Red River Parish, LA, Sabine Parish, LA, Webster Parish, LA, McCurtain County, OK, Anderson County, TX, Bowie County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Franklin County, TX, Gregg County, TX, Harrison County, TX, Houston County, TX, Marion County, TX, Morris County, TX, Nacogdoches County, TX, Panola County, TX, Red River County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, Shelby County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Wood County, TX

The radar

The Shreveport radar (KSHV), 65 km from the middle of the area, began a volume at 02:00 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.

Warnings issued inside it

5 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Dec 22, 8:43 PM CST	Severe Thunderstorm Warning	LZK	Clark	32 min
Dec 22, 9:28 PM CST	Severe Thunderstorm Warning	SHV	Bowie	47 min
Dec 22, 9:56 PM CST	Severe Thunderstorm Warning	SHV	Gregg	49 min
Dec 22, 10:56 PM CST	Severe Thunderstorm Warning	SHV	Panola	34 min
Dec 22, 11:47 PM CST	Severe Thunderstorm Warning	SHV	De Soto	58 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 2.0 hours before the alert went out and 74 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: 232 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 982 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 205 m²/s²
0-3 km storm-relative helicity: 285 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 6.6

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 22, 6:32 PM CST	Mesoscale Discussion	SPC	Benton, Carroll, Crawford, Franklin, Hempstead, Howard and 12 more	118 min
Dec 22, 7:29 PM CST	Mesoscale Discussion	SPC	Calhoun, Clark, Columbia, Dallas, Garland, Grant and 8 more	2 hr
Dec 22, 9:53 PM CST	Mesoscale Discussion	SPC	Clark, Columbia, Dallas, Hempstead, Howard, Lafayette and 6 more	97 min
Dec 22, 11:40 PM CST	Mesoscale Discussion	SPC	Columbia, Dallas, Lafayette, Nevada, Ouachita	95 min

Nearby

Severe Thunderstorm Watches in Texas, 2003 Severe Thunderstorm Watches in Arkansas, 2003 Severe Thunderstorm Watches in Louisiana, 2003 Every severe thunderstorm watch in 2003

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.