Tornado Watch 129

Issued

Apr 19, 2003, 1:20 AM CDT (06:20 UTC)

Expired

Apr 19, 2003, 8:00 AM CDT

In force

7 hr

Issued by

the Storm Prediction Center

• Mesoscale Discussion 494Apr 18, 11:32 PM CDT
• Mesoscale Discussion 497Apr 19, 4:11 AM CDT

000 
WWUS20 KWNS 190617
SEL9
SPC WW 190620
OKZ000-TXZ000-191300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 129
STORM PREDICTION CENTER NORMAN OK
120 AM CDT SAT APR 19 2003

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

   SOUTHWEST OKLAHOMA                           
   NORTHWEST TEXAS                              

EFFECTIVE THIS SATURDAY MORNING FROM 120 AM UNTIL 800 AM 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 85 STATUTE MILES EAST AND WEST
OF A LINE FROM 130 MILES SOUTH OF CHILDRESS TEXAS TO 35 MILES
NORTHEAST OF ALTUS 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 128.  WATCH NUMBER 128 WILL NOT BE IN
EFFECT AFTER 120 AM CDT.

DISCUSSION...STRONG LOW LEVEL SHEAR AND A DEEPENING SURFACE LOW
WILL SPREAD NNEWD INTO NWRN TX AND SWRN OK OVERNIGHT.  SUPERCELLS
HAVE BEEN PERSISTENT IN NWRN TX...AND ATTENDANT TORNADO THREAT WILL
ALSO INCREASE ALONG NWRN EDGE OF CAP INTO THE RED RIVER VALLEY.


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 24040.


...EVANS

350,0971 323,0984 323,1014 350,1001

WWUS20 KWNS 190617
SEL9  
SPC WW 190620
OKZ000-TXZ000-191300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 129
STORM PREDICTION CENTER NORMAN OK
120 AM CDT SAT APR 19 2003

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

   SOUTHWEST OKLAHOMA                           
   NORTHWEST TEXAS                              

EFFECTIVE THIS SATURDAY MORNING FROM 120 AM UNTIL 800 AM 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 85 STATUTE MILES EAST AND WEST
OF A LINE FROM 130 MILES SOUTH OF CHILDRESS TEXAS TO 35 MILES
NORTHEAST OF ALTUS 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 128.  WATCH NUMBER 128 WILL NOT BE IN
EFFECT AFTER 120 AM CDT.

DISCUSSION...STRONG LOW LEVEL SHEAR AND A DEEPENING SURFACE LOW
WILL SPREAD NNEWD INTO NWRN TX AND SWRN OK OVERNIGHT.  SUPERCELLS
HAVE BEEN PERSISTENT IN NWRN TX...AND ATTENDANT TORNADO THREAT WILL
ALSO INCREASE ALONG NWRN EDGE OF CAP INTO THE RED RIVER VALLEY.


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 24040.


...EVANS

350,0971 323,0984 323,1014 350,1001

Tornado Watches in Texas, 2003Tornado Watches in Oklahoma, 2003Every tornado watch in 2003

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.