Tornado Watch 19

Issued

Mar 4, 2004, 4:25 AM CST (10:25 UTC)

Expired

Mar 4, 2004, 10:00 AM CST

In force

6 hr

Issued by

the Storm Prediction Center

• Mesoscale Discussion 155Mar 4, 1:56 AM CST
• Mesoscale Discussion 156Mar 4, 2:44 AM CST
• Mesoscale Discussion 158Mar 4, 5:32 AM CST
• Mesoscale Discussion 161Mar 4, 8:43 AM CST

000 
WWUS20 KWNS 041033
SEL9  
SPC WW 041025
TXZ000-041600-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 19
NWS STORM PREDICTION CENTER NORMAN OK
425 AM CST THU MAR 4 2004

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

       SOUTH CENTRAL AND SOUTHWEST TEXAS

EFFECTIVE THIS THURSDAY MORNING FROM 425 AM UNTIL 1000 AM CST.

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 95 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 85 MILES SOUTH OF MIDLAND TEXAS TO 40 MILES
SOUTHEAST OF ABILENE 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...CONTINUE...WW 18...


DISCUSSION...LEADING EDGE OF LARGE SCALE FORCING ASSOCIATED WITH
EJECTING MEXICAN TROUGH IS JUST STARTING TO ENCOUNTER BOUNDARY LAYER
MOISTURE PLUME /WITH DEWPOINTS IN THE MID TO UPPER 60S/ MOVING NW UP
THE RIO GRANDE VLY.  EXPECT THAT MOISTURE/SURFACE-BASED INSTABILITY
WILL CONTINUE TO SPREAD NW DURING THE NEXT FEW HOURS AS WARM FRONT
STRENGTHENS ALONG A LINE FROM ROUGHLY 30 S MAF TO 30 NE ABI.  UPPER
WINDS WILL LIKELY REMAIN BACKED TO NEARLY SLY AHEAD OF UPPER TROUGH.
 BUT ARRIVAL OF STRONGER FLOW ALOFT /70+ KT AT 500 MB/ AND ELY
COMPONENT TO NEAR-SURFACE WINDS SUGGEST A GOOD CHANCE FOR SUPERCELLS
WITH TORNADOES...IN ADDITION TO HAIL/HIGH WIND.

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 21040.


...CORFIDI

320,1021 332,0991 303,0991 292,1021

Tornado Watches in Texas, 2004Every tornado watch in 2004

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.