Alert archive / Texas / Tornado Watches in 2000

Tornado Watch 169

April 15, 20008 counties in Oklahoma; 10 counties in Texas

The Storm Prediction Center issued this tornado watch at Apr 15, 2000, 5:45 PM CDT for 8 counties in Oklahoma; 10 counties in Texas. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Apr 15, 2000, 5:45 PM CDT (22:45 UTC)
Expired: Apr 15, 2000, 11:00 PM CDT
In force: 5 hr
Issued by: the Storm Prediction Center

Counties Caddo County, OK, Comanche County, OK, Cotton County, OK, Grady County, OK, Jackson County, OK, Kiowa County, OK, Tillman County, OK, Washita County, OK, Archer County, TX, Baylor County, TX, Foard County, TX, Hardeman County, TX, Haskell County, TX, Knox County, TX, Stonewall County, TX, Throckmorton County, TX, Wichita County, TX, Wilbarger County, TX

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Apr 15, 5:46 PM CDT	Severe Thunderstorm Warning	OUN	Hardeman	59 min
Apr 15, 5:55 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Kiowa	50 min
Apr 15, 6:24 PM CDT	Severe Thunderstorm Warning	OUN	Jackson	51 min
Apr 15, 6:39 PM CDT	Severe Thunderstorm Warning	OUN	Kiowa, Tillman	66 min
Apr 15, 6:43 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Knox	47 min
Apr 15, 6:50 PM CDT	Severe Thunderstorm Warning	OUN	Wilbarger	55 min
Apr 15, 6:59 PM CDT	Severe Thunderstorm Warning	OUN	Comanche	61 min
Apr 15, 7:33 PM CDT	Severe Thunderstorm Warning	OUN	Wichita	57 min
Apr 15, 7:38 PM CDT	Severe Thunderstorm Warning	OUN	Tillman	52 min
Apr 15, 7:38 PM CDT	Severe Thunderstorm Warning	OUN	Baylor, Knox	67 min
Apr 15, 7:59 PM CDT	Severe Thunderstorm Warning	OUN	Cotton	61 min
Apr 15, 8:12 PM CDT	Severe Thunderstorm Warning	OUN	Comanche	48 min
Apr 15, 8:30 PM CDT	Tornado Warning	SJT	Throckmorton	45 min
Apr 15, 8:36 PM CDT	Severe Thunderstorm Warning	OUN	Grady, Stephens	54 min
Apr 15, 8:58 PM CDT	Severe Thunderstorm Warning	OUN	Archer	47 min

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 10.8 hours before the alert went out and 224 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: 558 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 61 m²/s²
0-3 km storm-relative helicity: 75 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.

000 
WWUS9 KMKC 152227
MKC WW 152227
OKZ000-TXZ000-160400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 169
STORM PREDICTION CENTER NORMAN OK
527 PM CDT SAT APR 15 2000

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

   SOUTHERN OKLAHOMA                           
   NORTHWEST TEXAS                              

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 545 PM UNTIL
1100 PM CDT.

TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 50 STATUTE MILES EAST AND WEST
OF A LINE FROM 90 MILES SOUTHWEST OF WICHITA FALLS TEXAS TO 45
MILES NORTH OF FORT SILL 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...  CONTINUE...WW 168...

DISCUSSION...SHEAR PROFILES ARE BECOMING INCREASINGLY FAVORABLE FOR
TORNADIC SUPERCELLS ASSOCIATED WITH LINE OF SEVERE THUNDERSTORMS
MOVING INTO SWRN OK/NWRN TX.  STRONG SELY BOUNDARY LAYER FLOW AHEAD
OF SURFACE LOW COUPLED WITH INCREASING MID/UPPER FLOW WITH
APPROACHING S/WV TROUGH SUPPORT SUPERCELLS.  FURTHER N IN WW168
PRIMARY THREAT WILL CONTINUE TO BE LARGE HAIL AND ISOLATED WIND
GUSTS


AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. 
MEAN STORM MOTION VECTOR 24035.


...HALES

;351,0973 330,0984 330,1002 351,0991;

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 15, 3:45 PM CDT	Severe Thunderstorm Watch	SPC	Alfalfa, Beckham, Blaine, Caddo, Canadian, Comanche and 15 more	6 hr

Nearby

Tornado Watches in Texas, 2000 Tornado Watches in Oklahoma, 2000 Every tornado 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.