Tornado Watch 224

Issued

May 4, 2002, 5:30 PM CDT (22:30 UTC)

Expired

May 4, 2002, 11:00 PM CDT

In force

6 hr

Issued by

the Storm Prediction Center

000 
WWUS20 KWNS 042225
SEL4  
SPC WW 042218
TXZ000-050400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 224
STORM PREDICTION CENTER NORMAN OK
518 PM CDT SAT MAY 4 2002

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

   WEST CENTRAL AND NORTHWESTERN TEXAS                            
 
EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 530 PM UNTIL
1100 PM CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 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 95 MILES NORTH OF ABILENE TEXAS TO 60 MILES EAST
SOUTHEAST OF SAN ANGELO 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.


DISCUSSION...MODELS ARE CONSISTENT IN DEVELOPING WIDESPREAD
CONVECTION ACROSS WW THIS EVENING.  STRONG DEEP LAYER SHEAR AND
MODERATE INSTABILITY WILL LIKELY SUPPORT SUPERCELLS AND LARGE HAIL.
THOUGH LOW LEVEL SHEAR VALUES REMAIN MARGINAL ATTM...SHEAR IN THE
LOWEST LEVELS WILL INCREASE AS LLJ DEVELOPS THIS EVENING AND SHOULD
INCREASE THE POTENTIAL FOR A FEW TORNADOES DURING THE EARLY/MID
EVENING.


AVIATION...TORNADOES AND 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 500. 
MEAN STORM MOTION VECTOR 24030.


...EVANS

334,0975 310,0975 310,1011 334,1012

WWUS20 KWNS 042225
SEL4  
SPC WW 042218
TXZ000-050400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 224
STORM PREDICTION CENTER NORMAN OK
518 PM CDT SAT MAY 4 2002

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

   WEST CENTRAL AND NORTHWESTERN TEXAS                            
 
EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 530 PM UNTIL
1100 PM CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 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 95 MILES NORTH OF ABILENE TEXAS TO 60 MILES EAST
SOUTHEAST OF SAN ANGELO 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.


DISCUSSION...MODELS ARE CONSISTENT IN DEVELOPING WIDESPREAD
CONVECTION ACROSS WW THIS EVENING.  STRONG DEEP LAYER SHEAR AND
MODERATE INSTABILITY WILL LIKELY SUPPORT SUPERCELLS AND LARGE HAIL.
THOUGH LOW LEVEL SHEAR VALUES REMAIN MARGINAL ATTM...SHEAR IN THE
LOWEST LEVELS WILL INCREASE AS LLJ DEVELOPS THIS EVENING AND SHOULD
INCREASE THE POTENTIAL FOR A FEW TORNADOES DURING THE EARLY/MID
EVENING.


AVIATION...TORNADOES AND 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 500. 
MEAN STORM MOTION VECTOR 24030.


...EVANS

334,0975 310,0975 310,1011 334,1012

Tornado Watches in Texas, 2002Every tornado watch in 2002

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.