Alert archive / Arkansas / Severe Thunderstorm Watches in 2004

Severe Thunderstorm Watch 912

December 6, 20044 states

The Storm Prediction Center issued this severe thunderstorm watch at Dec 6, 2004, 5:45 PM CST for 4 states. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Dec 6, 2004, 5:45 PM CST (23:45 UTC)
Expired: Dec 6, 2004, 11:00 PM CST
In force: 5 hr
Issued by: the Storm Prediction Center

All 52 counties

Clark County, AR, Columbia County, AR, Crawford County, AR, Franklin County, AR, Garland County, AR, Hempstead County, AR, Howard County, AR, Johnson County, AR, Lafayette County, AR, Little River County, AR, Logan County, AR, Madison County, AR, Miller County, AR, Montgomery County, AR, Nevada County, AR, Newton County, AR, Perry County, AR, Pike County, AR, Polk County, AR, Pope County, AR, Scott County, AR, Searcy County, AR, Sebastian County, AR, Sevier County, AR, Washington County, AR, Yell County, AR, Bossier Parish, LA, Caddo Parish, LA, De Soto Parish, LA, Adair County, OK, LeFlore County, OK, McCurtain County, OK, Sequoyah 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, Marion County, TX, Morris County, TX, Nacogdoches County, TX, Panola County, TX, Red River County, TX, Rusk County, TX, Shelby County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Wood County, TX

The radar

The Shreveport radar (KSHV), 123 km from the middle of the area, began a volume at 23:49 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

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

Issued	Product	Office	Counties	Lasted
Dec 6, 5:47 PM CST	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Sequoyah	58 min
Dec 6, 6:30 PM CST	Severe Thunderstorm Warning	SHV	Smith, Wood	60 min
Dec 6, 7:39 PM CST	Severe Thunderstorm Warning	SHV	Upshur	51 min
Dec 6, 7:44 PM CST	Severe Thunderstorm Warning	SHV	Bowie	61 min
Dec 6, 7:51 PM CST	Severe Thunderstorm Warning	SHV	Marion	54 min
Dec 6, 7:54 PM CST	Severe Thunderstorm Warning	LZK	Johnson, Logan	36 min
Dec 6, 8:08 PM CST	Severe Thunderstorm Warning	SHV	Cass	37 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

Fort Worth, TX (KFWD), launched 12:00Z, 11.8 hours before the alert went out and 263 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1269 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 145 m²/s²
0-3 km storm-relative helicity: 239 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 6, 4:58 PM CST	Mesoscale Discussion	SPC	Howard, Little River, Polk, Scott, Sebastian, Sevier	92 min
Dec 6, 12:20 PM CST	Mesoscale Discussion	SPC	Caddo, Comanche, Cotton, Grady, Greer, Harmon and 6 more	115 min
Dec 6, 12:40 PM CST	Severe Thunderstorm Watch	SPC	Atoka, Bryan, Caddo, Carter, Cleveland, Coal and 20 more	5 hr
Dec 6, 10:35 AM CST	Mesoscale Discussion	SPC	Borden, Callahan, Coke, Coleman, Fisher, Glasscock and 16 more	115 min
Dec 6, 11:55 AM CST	Severe Thunderstorm Watch	SPC	Callahan, Coke, Coleman, Concho, Fisher, Haskell and 8 more	5 hr
Dec 6, 1:30 PM CST	Mesoscale Discussion	SPC	Bosque, Brown, Callahan, Coleman, Comanche, Coryell and 17 more	90 min
Dec 6, 1:45 PM CST	Severe Thunderstorm Watch	SPC	Archer, Bosque, Brown, Clay, Collin, Comanche and 30 more	6 hr

Nearby

Severe Thunderstorm Watches in Arkansas, 2004 Severe Thunderstorm Watches in Texas, 2004 Severe Thunderstorm Watches in Oklahoma, 2004 Every severe thunderstorm watch 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.