Alert archive / Texas / Tornado Watches in 2001

Tornado Watch 29

February 24, 200125 counties in Oklahoma; 36 counties in Texas

The Storm Prediction Center issued this tornado watch at Feb 24, 2001, 7:15 AM CST for 25 counties in Oklahoma; 36 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Feb 24, 2001, 7:15 AM CST (13:15 UTC)
Expired
Feb 24, 2001, 1:00 PM CST
In force
6 hr
Issued by
the Storm Prediction Center
All 61 counties

Atoka County, OK, Bryan County, OK, Carter County, OK, Choctaw County, OK, Cleveland County, OK, Coal County, OK, Cotton County, OK, Garvin County, OK, Grady County, OK, Haskell County, OK, Hughes County, OK, Jefferson County, OK, Johnston County, OK, Latimer County, OK, LeFlore County, OK, Love County, OK, Marshall County, OK, McClain County, OK, Murray County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Pushmataha County, OK, Seminole County, OK, Stephens County, OK, Archer County, TX, Bosque County, TX, Brown County, TX, Callahan County, TX, Clay County, TX, Coleman County, TX, Collin County, TX, Comanche County, TX, Cooke County, TX, Dallas County, TX, Delta County, TX, Denton County, TX, Eastland County, TX, Ellis County, TX, Erath County, TX, Fannin County, TX, Grayson County, TX, Hamilton County, TX, Hill County, TX, Hood County, TX, Hunt County, TX, Jack County, TX, Johnson County, TX, Kaufman County, TX, Lamar County, TX, Montague County, TX, Palo Pinto County, TX, Parker County, TX, Rockwall County, TX, Runnels County, TX, Shackelford County, TX, Somervell County, TX, Stephens County, TX, Tarrant County, TX, Wise County, TX, Young County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 78 km from the middle of the area, began a volume at 13:16 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

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

IssuedProductOfficeCountiesLasted
Feb 24, 8:11 AM CSTSevere Thunderstorm WarningOUNArcher49 min
Feb 24, 8:32 AM CSTSevere Thunderstorm WarningOUNClay43 min
Feb 24, 8:39 AM CSTSevere Thunderstorm WarningFWDComanche51 min
Feb 24, 8:40 AM CSTSevere Thunderstorm WarningSJTBrown20 min
Feb 24, 9:05 AM CSTSevere Thunderstorm WarningFWDMontague, Wise55 min
Feb 24, 9:27 AM CSTSevere Thunderstorm WarningFWDHood, Parker63 min
Feb 24, 9:42 AM CSTSevere Thunderstorm WarningFWDCooke48 min
Feb 24, 9:46 AM CSTSevere Thunderstorm WarningOUNCoal44 min
Feb 24, 9:59 AM CSTSevere Thunderstorm WarningFWDTarrant61 min
Feb 24, 10:01 AM CSTSevere Thunderstorm WarningOUNLove, Marshall44 min
Feb 24, 10:07 AM CSTSevere Thunderstorm WarningFWDDenton53 min
Feb 24, 10:18 AM CSTSevere Thunderstorm WarningOUNJohnston, Pontotoc42 min
Feb 24, 10:21 AM CSTSevere Thunderstorm WarningFWDGrayson39 min
Feb 24, 10:26 AM CSTSevere Thunderstorm WarningFWDCollin, Dallas64 min
Feb 24, 10:35 AM CSTSevere Thunderstorm WarningFWDJohnson55 min
Feb 24, 10:49 AM CSTSevere Thunderstorm WarningOUNBryan, Marshall41 min
Feb 24, 10:51 AM CSTSevere Thunderstorm WarningTSAMcIntosh, Pittsburg39 min
Feb 24, 10:57 AM CSTSevere Thunderstorm WarningOUNAtoka, Coal48 min
Feb 24, 11:04 AM CSTSevere Thunderstorm WarningFWDFannin, Hunt56 min
Feb 24, 11:12 AM CSTSevere Thunderstorm WarningFWDRockwall48 min
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

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 1.3 hours before the alert went out and 60 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, Fort Worth, TX at 12:00Z on 2001-02-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1959 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, Fort Worth, TX at 12:00Z on 2001-02-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 364 square meters per square second.1939587897117136Sfc1 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
1959 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
668 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
364 m²/s²
0-3 km storm-relative helicity
481 m²/s²
Significant tornado parameter
4.6
Supercell composite
18.5

Open this sounding in Storm Lab

The text

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

000 
WWUS9 KMKC 241259
SEL9  

SEL9  
MKC WW 241254
OKZ000-TXZ000-241900-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 29
STORM PREDICTION CENTER NORMAN OK
654 AM CST SAT FEB 24 2001

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

   SOUTHERN AND EASTERN OKLAHOMA                           
   NORTHCENTRAL AND NORTHEAST TEXAS                              

EFFECTIVE THIS SATURDAY MORNING AND AFTERNOON FROM 715 AM UNTIL 100
PM CST.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 100 STATUTE MILES EAST AND WEST
OF A LINE FROM 30 MILES EAST SOUTHEAST OF BROWNWOOD TEXAS TO 35
MILES NORTH NORTHWEST OF MCALESTER OKLAHOMA.

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 SEVERE
THUNDERSTORM WATCH NUMBER 28.  WATCH NUMBER 28 WILL NOT BE IN
EFFECT AFTER 715 AM CST.

DISCUSSION...SEVERE THUNDERSTORMS EXPECTED TO DEVELOP RAPIDLY WITH
APPROACH OF VERY STRONG TROUGH AND MID/UPPER JET FROM SWRN TX.  12Z
SOUNDINGS INDICATED MODERATELY UNSTABLE AIRMASS ACROSS N TX INTO
SRN OK WITH VERY FAVORABLE SHEAR PROFILES FOR DEVELOPMENT OF
SUPERCELLS/TORNADOES.  STORMS EXPECTED TO INTENSIFY ALONG AND AHEAD
OF LINE NOW MOVING EWD  INTO CENTRAL OK EXTENDING SSWWD INTO NWRN
TX.


AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURF>ACE AND ALOFT TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. 
MEAN STORM MOTION VECTOR 22045.


...HALES

;351,0941 313,0964 313,1001 351,0974;

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
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, 11:15 AM CSTTornado WatchSPCAdair, Cherokee, Craig, Delaware, McIntosh, Mayes and 4 more6 hr
Feb 24, 11:30 AM CSTTornado WatchSPCChoctaw, Haskell, Latimer, LeFlore, McCurtain, Pushmataha6 hr
Feb 24, 3:15 PM CSTTornado WatchSPCHarrison, Marion, Panola6 hr

Nearby

Tornado Watches in Texas, 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; radar from the NEXRAD Level II archive.