Alert archive / Arkansas / Severe Thunderstorm Watches in 2005

Severe Thunderstorm Watch 7

January 12, 20054 states

The Storm Prediction Center issued this severe thunderstorm watch at Jan 12, 2005, 10:50 PM CST for 4 states. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jan 12, 2005, 10:50 PM CST (04:50 UTC)
Expired
Jan 13, 2005, 4:00 AM CST
In force
5 hr
Issued by
the Storm Prediction Center
All 58 counties

Arkansas County, AR, Ashley County, AR, Bradley County, AR, Calhoun County, AR, Chicot County, AR, Cleburne County, AR, Cleveland County, AR, Columbia County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Faulkner County, AR, Grant County, AR, Independence County, AR, Jackson County, AR, Jefferson County, AR, Lee County, AR, Lincoln County, AR, Lonoke County, AR, Mississippi County, AR, Monroe County, AR, Ouachita County, AR, Phillips County, AR, Poinsett County, AR, Prairie County, AR, Pulaski County, AR, St. Francis County, AR, Union County, AR, White County, AR, Woodruff County, AR, Bienville Parish, LA, Caldwell Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Grant Parish, LA, Jackson Parish, LA, LaSalle Parish, LA, Lincoln Parish, LA, Morehouse Parish, LA, Natchitoches Parish, LA, Ouachita Parish, LA, Rapides Parish, LA, Red River Parish, LA, Richland Parish, LA, Sabine Parish, LA, Union Parish, LA, Vernon Parish, LA, Webster Parish, LA, West Carroll Parish, LA, Winn Parish, LA, Bolivar County, MS, Coahoma County, MS, Tunica County, MS, Sabine County, TX, San Augustine County, TX

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jan 12, 11:02 PM CSTSevere Thunderstorm WarningLZKFaulkner, Perry, Pulaski, Saline, Van Buren48 min
Jan 12, 11:21 PM CSTTornado WarningSHVUnion54 min
Jan 12, 11:35 PM CSTFlash Flood WarningLZKCalhoun, Cleveland, Dallas, Grant, Jefferson, Ouachita3 hr
Jan 12, 11:40 PM CSTSevere Thunderstorm WarningLZKLonoke, Prairie50 min
Jan 12, 11:45 PM CSTSevere Thunderstorm WarningLZKWhite45 min
Jan 13, 12:45 AM CSTSevere Thunderstorm WarningLZKArkansas30 min
Jan 13, 1:06 AM CSTSevere Thunderstorm WarningSHVSabine54 min
Jan 13, 1:31 AM CSTTornado WarningSHVNatchitoches29 min
Jan 13, 1:47 AM CSTFlash Flood WarningLZKArkansas, Bradley, Cleveland, Desha, Drew, Jefferson and 2 more3 hr
Jan 13, 2:24 AM CSTSevere Thunderstorm WarningJANAshley36 min
Jan 13, 2:28 AM CSTSevere Thunderstorm WarningJANMorehouse47 min
Jan 13, 2:45 AM CSTSevere Thunderstorm WarningJANFranklin, Richland45 min
Jan 13, 2:55 AM CSTSevere Thunderstorm WarningJANBolivar35 min
Jan 13, 3:07 AM CSTSevere Thunderstorm WarningJANWest Carroll38 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, 4.8 hours before the alert went out and 122 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 2005-01-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 242 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 2005-01-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 262 square meters per square second.1939587897117Sfc1 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
242 J/kg
Mixed-layer CIN
-86 J/kg
Mixed-layer LCL
1106 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
262 m²/s²
0-3 km storm-relative helicity
342 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.2

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 12, 6:02 PM CSTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Crawford, Franklin and 9 more88 min
Jan 12, 7:52 PM CSTMesoscale DiscussionSPCClark, Conway, Franklin, Garland, Hempstead, Howard and 15 more83 min
Jan 12, 9:28 PM CSTMesoscale DiscussionSPCClay, Cleburne, Craighead, Fulton, Greene, Independence and 5 more32 min
Jan 12, 10:16 PM CSTMesoscale DiscussionSPCArkansas, Ashley, Bradley, Calhoun, Clark, Clay and 44 more59 min
Jan 13, 2:25 AM CSTTornado WatchSPCChicot7 hr
Jan 13, 4:36 AM CSTMesoscale DiscussionSPCAcadia, Concordia, East Baton Rouge, East Feliciana, Iberville, Lafayette and 9 more84 min
Jan 13, 5:45 AM CSTTornado WatchSPCSaint Helena, Washington5 hr
Jan 13, 10:12 AM CSTMesoscale DiscussionSPCJackson63 min

Nearby

Severe Thunderstorm Watches in Arkansas, 2005Severe Thunderstorm Watches in Louisiana, 2005Severe Thunderstorm Watches in Mississippi, 2005Every severe thunderstorm watch in 2005

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.