Alert archive / Texas / Tornado Watches in 2000

Tornado Watch 219

April 30, 2000Beaver County, Cimarron County, Texas County, Oklahoma; 44 counties in Texas

The Storm Prediction Center issued this tornado watch at Apr 30, 2000, 12:30 AM CDT for Beaver County, Cimarron County, Texas County, Oklahoma; 44 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Apr 30, 2000, 12:30 AM CDT (05:30 UTC)
Expired
Apr 30, 2000, 6:00 AM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 47 counties

Beaver County, OK, Cimarron County, OK, Texas County, OK, Armstrong County, TX, Bailey County, TX, Briscoe County, TX, Carson County, TX, Castro County, TX, Childress County, TX, Cochran County, TX, Collingsworth County, TX, Cottle County, TX, Crosby County, TX, Dallam County, TX, Deaf Smith County, TX, Dickens County, TX, Donley County, TX, Floyd County, TX, Garza County, TX, Gray County, TX, Hale County, TX, Hall County, TX, Hansford County, TX, Hartley County, TX, Hemphill County, TX, Hockley County, TX, Hutchinson County, TX, Kent County, TX, King County, TX, Lamb County, TX, Lipscomb County, TX, Lubbock County, TX, Lynn County, TX, Moore County, TX, Motley County, TX, Ochiltree County, TX, Oldham County, TX, Parmer County, TX, Potter County, TX, Randall County, TX, Roberts County, TX, Sherman County, TX, Stonewall County, TX, Swisher County, TX, Terry County, TX, Wheeler County, TX, Yoakum County, TX

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 30, 2:36 AM CDTSevere Thunderstorm WarningLUBLubbock39 min
Apr 30, 2:51 AM CDTSevere Thunderstorm WarningAMAGray54 min
Apr 30, 3:16 AM CDTSevere Thunderstorm WarningAMARoberts59 min
Apr 30, 3:39 AM CDTSevere Thunderstorm WarningAMACollingsworth, Wheeler66 min
Apr 30, 3:41 AM CDTSevere Thunderstorm WarningAMAGray34 min
Apr 30, 4:15 AM CDTSevere Thunderstorm WarningAMAGray, Roberts60 min
Apr 30, 4:39 AM CDTSevere Thunderstorm WarningLUBChildress51 min
Apr 30, 4:46 AM CDTSevere Thunderstorm WarningAMAHemphill, Wheeler59 min

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 5.5 hours before the alert went out and 48 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, Amarillo Airport, TX at 00:00Z on 2000-04-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2063 joules per kilogram.LCLEL10008507005003002001001 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, Amarillo Airport, TX at 00:00Z on 2000-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 137 square meters per square second.193958Sfc1 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
2063 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
1561 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
137 m²/s²
0-3 km storm-relative helicity
440 m²/s²
Significant tornado parameter
1.4
Supercell composite
20.0

Open this sounding in Storm Lab

The text

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

326 
WWUS9 KMKC 300504
SEL9  

SEL9  
MKC WW 300504
OKZ000-TXZ000-301100-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 219
STORM PREDICTION CENTER NORMAN OK
1204 AM CDT SUN APR 30 2000

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

   THE PANHANDLE OF OKLAHOMA                           
   THE TEXAS PANHANDLE AND NORTHWESTERN TEXAS                     
     

EFFECTIVE THIS SUNDAY MORNING FROM 1230 AM UNTIL 600 AM CDT.

TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 80 STATUTE MILES EAST AND WEST
OF A LINE FROM 85 MILES NORTHEAST OF DALHART TEXAS TO 55 MILES
SOUTH SOUTHEAST OF LUBBOCK TEXAS.

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 216.  WATCH NUMBER 216 WILL NOT BE IN EFFECT AFTER 30 AM
CDT.  CONTINUE...WW 217...WW 218...

DISCUSSION...THUNDERSTORMS WILL INCREASE AHEAD OF SURFACE FRONT AND
UPPER TROUGH AS THEY APPROACH MODERATELY UNSTABLE AIR MASS. STRONG
WIND SHEAR PRESENT WITH HELICITIES EXCEEDING 500 M2/SEC2 INDICATING
POTENTIAL FOR TORNADIC SUPERCELLS. 

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. 
MEAN STORM MOTION VECTOR 24035.

...ROGASH

365,1000 325,1000 325,1025 365,1025

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 29, 7:30 PM CDTSevere Thunderstorm WatchSPCCarter, Cotton, Jefferson, Love, Murray, Stephens and 1 more6 hr
Apr 30, 6:00 AM CDTSevere Thunderstorm WatchSPCBeaver, Beckham, Ellis, Greer, Harmon, Harper and 2 more5 hr
Apr 30, 1:45 PM CDTSevere Thunderstorm WatchSPCBeckham, Blaine, Caddo, Canadian, Cleveland, Custer and 21 more6 hr
Apr 30, 2:15 PM CDTTornado WatchSPCComanche, Cotton, Jackson, Tillman6 hr
Apr 30, 12:45 AM CDTSevere Thunderstorm WatchSPCArcher, Baylor, Clay, Foard, Haskell, Jack and 11 more5 hr
Apr 30, 4:15 AM CDTSevere Thunderstorm WatchSPCAnderson, Collin, Dallas, Denton, Ellis, Henderson and 9 more5 hr
Apr 30, 4:30 PM CDTSevere Thunderstorm WatchSPCBrown, Callahan, Coleman, Comanche, Concho, Eastland and 10 more6 hr

Nearby

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