Alert archive / Texas / Tornado Watches in 2001

Tornado Watch 31

February 24, 20019 counties in Arkansas; 6 counties in Oklahoma; 23 counties in Texas

The Storm Prediction Center issued this tornado watch at Feb 24, 2001, 11:30 AM CST for 9 counties in Arkansas; 6 counties in Oklahoma; 23 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Feb 24, 2001, 11:30 AM CST (17:30 UTC)
Expired
Feb 24, 2001, 5:00 PM CST
In force
6 hr
Issued by
the Storm Prediction Center
All 38 counties

Howard County, AR, Little River County, AR, Logan County, AR, Montgomery County, AR, Polk County, AR, Scott County, AR, Sebastian County, AR, Sevier County, AR, Yell County, AR, Choctaw County, OK, Haskell County, OK, Latimer County, OK, LeFlore County, OK, McCurtain County, OK, Pushmataha County, OK, Bowie County, TX, Camp County, TX, Cass County, TX, Delta County, TX, Fannin County, TX, Franklin County, TX, Gregg County, TX, Henderson County, TX, Hopkins County, TX, Hunt County, TX, Kaufman County, TX, Lamar County, TX, Marion County, TX, Morris County, TX, Rains County, TX, Red River County, TX, Rockwall County, TX, Rusk County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Van Zandt County, TX, Wood County, TX

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Feb 24, 11:59 AM CSTSevere Thunderstorm WarningFWDDelta, Lamar61 min
Feb 24, 11:59 AM CSTSevere Thunderstorm WarningFWDHunt61 min
Feb 24, 12:29 PM CSTSevere Thunderstorm WarningTSAPushmataha31 min
Feb 24, 1:13 PM CSTSevere Thunderstorm WarningTSACrawford, Sebastian47 min
Feb 24, 1:33 PM CSTSevere Thunderstorm WarningLZKPolk, Scott57 min
Feb 24, 1:34 PM CSTSevere Thunderstorm WarningSHVMcCurtain26 min
Feb 24, 1:58 PM CSTSevere Thunderstorm WarningLZKLogan62 min
Feb 24, 2:23 PM CSTSevere Thunderstorm WarningLZKPolk, Scott47 min
Feb 24, 2:35 PM CSTTornado WarningLZKPolk, Scott35 min
Feb 24, 2:46 PM CSTSevere Thunderstorm WarningSHVHoward29 min
Feb 24, 2:48 PM CSTSevere Thunderstorm WarningLZKYell57 min
Feb 24, 2:53 PM CSTSevere Thunderstorm WarningLZKMontgomery, Pike67 min
Feb 24, 3:00 PM CSTSevere Thunderstorm WarningLZKLogan30 min
Feb 24, 3:41 PM CSTSevere Thunderstorm WarningLZKGarland, Perry, Yell64 min

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 5.5 hours before the alert went out and 183 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 2001-02-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 201 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 2001-02-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 531 square meters per square second.1939587897Sfc1 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
201 J/kg
Mixed-layer CIN
-301 J/kg
Mixed-layer LCL
532 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
531 m²/s²
0-3 km storm-relative helicity
696 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WWUS9 KMKC 241718
SEL1  

SEL1  
MKC WW 241712
ARZ000-OKZ000-TXZ000-242300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 31
STORM PREDICTION CENTER NORMAN OK
1112 AM CST SAT FEB 24 2001

THE STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

WESTERN ARKANSAS                           
SOUTHEAST OKLAHOMA                           
NORTHEAST TEXAS                              

EFFECTIVE THIS SATURDAY MORNING AND AFTERNOON FROM 1130 AM UNTIL
500 PM CST.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 95 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 65 STATUTE MILES EAST AND WEST
OF A LINE FROM 25 MILES SOUTHWEST OF TYLER TEXAS TO FORT SMITH
ARKANSAS.

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. 
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO WATCH
NUMBER 29.  WATCH NUMBER 29 WILL NOT BE IN EFFECT AFTER 1130 AM
CST.  CONTINUE...WW 30...

DISCUSSION...SOUTHERN END OF SQUALL LINE SHOULD CONTINUE TO DEVELOP
EWD ACROSS NE TX/SE OK/WRN AR AS THE COLD FRONT SURGES EWD AND THE
100 KT MID LEVEL JET LIFTS NEWD FROM TX TOWARD AR.  THE MAIN THREAT
WITH STORMS IN THE LINE WILL BE DAMAGING WINDS AND LARGE HAIL.  ANY
STORMS THAT CAN BECOME SUSTAINED E OF THE SQUALL LINE THIS
AFTERNOON WILL ALSO HAVE THE POTENTIAL TO PRODUCE A FEW TORNADOES.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT> TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 80 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. 
MEAN STORM MOTION VECTOR 24045.

...THOMPSON

;351,0931 320,0943 320,0964 351,0953;

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 24, 11:15 AM CSTTornado WatchSPCBenton, Boone, Carroll, Crawford, Franklin, Johnson and 3 more6 hr
Feb 24, 3:15 PM CSTTornado WatchSPCArkansas, Ashley, Baxter, Bradley, Calhoun, Clark and 45 more6 hr
Feb 24, 5:45 PM CSTTornado WatchSPCChicot, Crittenden, Desha, Lee, Mississippi, Phillips and 1 more5 hr
Feb 24, 12:30 AM CSTSevere Thunderstorm WatchSPCBeckham, Greer, Harmon, Jackson, Kiowa, Washita6 hr
Feb 24, 3:30 AM CSTSevere Thunderstorm WatchSPCCaddo, Carter, Cleveland, Comanche, Cotton, Garvin and 12 more5 hr
Feb 24, 7:15 AM CSTTornado WatchSPCAtoka, Bryan, Carter, Choctaw, Cleveland, Coal and 19 more6 hr

Nearby

Tornado Watches in Texas, 2001Tornado Watches in Arkansas, 2001Tornado Watches in Oklahoma, 2001Every tornado watch in 2001

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.