Severe Thunderstorm Warning 41, NWS Houston/Galveston, TX

SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON
TX 940 AM CDT FRI APR 11 1997

AIRMASS OVR SW SECTIONS OF FA ARE VERY MOIST AND UNSTABLE WITH SELS
REPORTING CAPES ARND 3500+.  CF NEAR CLL ATTM IS PROGD TO MV INTO
HOUSTON METRO AREA ARND 4-5 PM AND THEN OFF COAST BETWEEN 7-8 PM.
SATL WV SHOWS STRNG SPD MX PULLING UP OUT OF SW TX AND SHUD PROVIDE
KICK FOR STRNG TSTMS TO DVLP OVR SW SECTIONS AND TRAIN TO NE ACRS
RMNG FA ALONG AND JUST OUT AHEAD OF FROPA.  THEREFORE...SVR WX & HVY
RAINS STILL A THREAT LATE AFTN/EVENG FOR PORTIONS OF SE TX.  FNT SHUD
PUSH THRU CNTRL ZONES ABOUT FCST ISSUENCE TIME SO WORDING WILL BE
DIFFICULT THERE.  WATCH TILL 01Z REQUIRES CONT MENTION OF PSBL SVR
WITH HVY RAINS EARLY...THEN SHIFT WNDS AND LWR CHC TSTMS TO SLGT CHC
LGT RAIN AFTER FROPA.  SATL SHOWS DRY AIR ADVECTING UP FM SW BUT
BELIEVE POST-FNTL ST DECK WILL PREVAIL MOST OF TNGT THEN ERODE BY
MRNG AND GIVE WAY TO BKN MID LVL CLDS ON SAT.  DECREASING CLDS SAT
AFTN WILL ALLOW FAIR SKIES SAT NGT TO BOTTOM TMPS OUT INTO THE 40S.
OVRRNG CLDS SEEM TO SET UP LATE SUN AS NXT UPR TROF DIGS INTO BAJA
AREA AND SPREADS PAC MOIST/CLDS OVR A COOL DRY NE-E FLOW AT SFC.
WILL TWEAK CLDS AND TMPS ACCORDINGLY WITH NO POPS AFTR TNGT.  CAUTION
ADVISED ON AREA LAKES INLAND...INLAND BAYS AND WATERWAYS FOR COASTAL
ZONES TNGT AND SAT.  LEANING TWRD COOL DRY S ATTM.  39

PRELIMS...

CLL E/B A/B-E  48/55 42/63  2000
IAH E/B A/B-E  52/60 44/64  6-2000
GLS C/E B/B-E  58/64 55/63  8-2000

TXZ178-179-199-200-210>214-226-227-235>238-511-513-120130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
225 PM CDT FRI APR 11 1997

...A TORNADO WATCH HAS BEEN ISSUED UNTIL 800 PM FOR MOST OF
SOUTHEAST TEXAS...

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WATCH UNTIL 8 PM
FOR THE SOUTHERN PORTIONS OF SOUTHEAST TEXAS.  COUNTIES IN THE
WATCH AREA INCLUDE...POLK...SAN JACINTO...MONTGOMERY...WALLER...
AUSTIN...COLORADO...LIBERTY...CHAMBERS...HARRIS...GALVESTON...
BRAZORIA...FORT BEND...MATAGORDA...WHARTON...JACKSON.

CITIES IN THE WATCH AREA INCLUDE CONROE...HOUSTON...COLUMBUS...
RICHMOND...EL CAMPO...ANGLETON...AND GALVESTON.  THE WATCH INCLUDES
THE ADJACIENT COASTAL WATERS.

SCATTERED TO NUMEROUS THUNDERSTORMS ARE DEVELOPING ACROSS THE AREA
THIS AFTERNOON IN A VERY MOIST AND UNSTABLE ATMOSPHERE. A
COMBINATION OF A STRONG UPPER LEVEL DISTURBANCE...THE JET STREAM
ALOFT...AND A STRONG COLD FRONT AT THE SURFACE HAVE INDUCED A WIND
SHEAR PATTERN FAVORABLE FOR THE DEVELOPMENT OF TORNADIC STORMS OVER
THE WATCH AREA.  THE COLD FRONT IS EXPECTED TO MOVE THROUGH THE
HOUSTON AREA BETWEEN 4 AND 6 PM...THEN OFF OF THE COAST BETWEEN 8
AND 10 PM.

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.

AMATUER RADIO OPERATORS AND SKYWARN SPOTTERS ARE URGED TO MONITOR
THIS WEATHER SITUATION AND BE PREPARED FOR ACTIVATION.

STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER UPDATES AND STATEMENTS.