Alert archive / Texas / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 1

January 2, 200016 counties in Oklahoma; 27 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Jan 2, 2000, 11:45 PM CST for 16 counties in Oklahoma; 27 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Jan 2, 2000, 11:45 PM CST (05:45 UTC)
Expired: Jan 3, 2000, 6:00 AM CST
In force: 6 hr
Issued by: the Storm Prediction Center

All 43 counties

Atoka County, OK, Bryan County, OK, Carter County, OK, Choctaw County, OK, Coal County, OK, Jefferson County, OK, Johnston County, OK, Latimer County, OK, LeFlore County, OK, Love County, OK, Marshall County, OK, McCurtain County, OK, Murray County, OK, Pittsburg County, OK, Pontotoc County, OK, Pushmataha County, OK, Archer County, TX, Clay County, TX, Collin County, TX, Cooke County, TX, Dallas County, TX, Delta County, TX, Denton County, TX, Eastland County, TX, Fannin County, TX, Franklin County, TX, Grayson County, TX, Hood County, TX, Hopkins County, TX, Hunt County, TX, Jack County, TX, Lamar County, TX, Montague County, TX, Palo Pinto County, TX, Parker County, TX, Red River County, TX, Rockwall County, TX, Stephens County, TX, Tarrant County, TX, Titus County, TX, Wichita County, TX, Wise County, TX, Young County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 137 km from the middle of the area, began a volume at 05:44 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
Jan 3, 12:29 AM CST	Severe Thunderstorm Warning	OUN	Clay	46 min
Jan 3, 1:24 AM CST	Severe Thunderstorm Warning	OUN	Johnston	36 min
Jan 3, 1:45 AM CST	Severe Thunderstorm Warning	OUN	Pontotoc	25 min
Jan 3, 4:05 AM CST	Severe Thunderstorm Warning	TSA	LeFlore, Sequoyah	50 min
Jan 3, 5:55 AM CST	Severe Thunderstorm Warning	TSA	LeFlore	35 min

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 5.8 hours before the alert went out and 108 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: 79 J/kg
Mixed-layer CIN: -104 J/kg
Mixed-layer LCL: 1233 m above ground
0-6 km bulk shear: 78 kt
0-1 km storm-relative helicity: 48 m²/s²
0-3 km storm-relative helicity: 105 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

112 
WWUS9 KMKC 030510
SEL1  

SEL1  
MKC WW 030510
OKZ000-TXZ000-031200-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 1
STORM PREDICTION CENTER NORMAN OK
1110 PM CST SUN JAN 2 2000

THE STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

   SOUTH CENTRAL AND SOUTHEAST OKLAHOMA                           
   NORTH CENTRAL AND NORTHEAST TEXAS                              

EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 1145 PM UNTIL
600 AM CST.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 70 STATUTE MILES
NORTH AND SOUTH OF A LINE FROM 55 MILES WEST NORTHWEST OF MINERAL
WELLS TEXAS TO 25 MILES SOUTH SOUTHEAST OF PAGE OKLAHOMA.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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.


DISCUSSION...THUNDERSTORMS ARE INCREASING OVER THE WESTERN PART OF
NORTH TEXAS IN RESPONSE TO STRONG UPPER SHORT WVAE TROUGH MOVING
RAPIDLY ACROSS WEST TEXAS.  CONVECTION IS EXPECTED TO CONTINUE
DEVELOPING AND INTENSIFY ALONG AND NORTH OF LOW LEVEL BOUNDARY
EXTENDING ACROSS NORTH TEXAS.  ALTHOUGH LOW LEVEL AIR MASS IS ONLY
MARGINALLY MOIST AND UNSTABLE...DYNAMIC FORCING ASSOCIATED WITH 90
KT MID LEVEL JET STREAK AND COOLING ALOFT INDICATES POTENTIAL FOR
SEVERE STORMS TO DEVELOP DURING THE OVERNIGHT HOURS.


AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.  MEAN STORM
MOTION VECTOR 24045.


...WEISS

340,0985 352,0942 331,0942 320,0985

Nearby

Severe Thunderstorm Watches in Texas, 2000 Severe Thunderstorm Watches in Oklahoma, 2000 Every severe thunderstorm watch in 2000

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.