Flash Flood Warning 5, NWS Houston/Galveston, TX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
10 AM CDT SAT MAY 1 2004

.DISCUSSION...
HAVE MADE A QUICK UPDATE TO ZONES TO ACCOUNT FOR THE NEW TORNADO
WATCH. TOA#143 COVERS THE COASTAL/NEAR COASTAL COUNTIES OF SE TX
UNTIL 3PM. HOWEVER...NOT ANTICIPATING THE WATCH TO HOLD OVER THE
CWFA THROUGH THE OFFICAL END TIME.  KEEPING THE FFA UP FOR THE
TIME BEING AS WELL. ADDITIONAL TWEAKING OF ZONES PROBABLY IN THE
WORKS THIS AFTN TO ACCOUNT FOR WINDS/TEMPS. 41/45/42

&&

.HGX WATCHES/WARNINGS/ADVISORIES...
TORNADO WATCH COASTAL/NEAR COASTAL ZONES OF SE TX UNTIL 3 PM.
FLOOD WATCH ALL OF SOUTHEAST TEXAS THROUGH 6 PM.
SCA ALL WATERS THIS AFTERNOON.
&&

.PRELIMINARY POINT TEMPS/POP...
COLLEGE STATION (CLL) 72 52 75 50 79 / 80 30 00 00 00
HOUSTON (IAH)         76 56 75 50 79 / 80 60 00 00 00
GALVESTON (GLS)       75 61 74 60 78 / 80 70 10 00 00
&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1024 AM CDT SAT MAY 1 2004

TXZ163-164-176>179-195>200-210>214-226-227-235>238-021200-
AUSTIN-BRAZORIA-BRAZOS-BURLESON-CHAMBERS-COLORADO-FORT BEND-GALVESTON-
GRIMES-HARRIS-HOUSTON-JACKSON-LIBERTY-MADISON-MATAGORDA-MONTGOMERY-
POLK-SAN JACINTO-TRINITY-WALKER-WALLER-WASHINGTON-WHARTON-
1024 AM CDT SAT MAY 1 2004

...SEVERE THUNDERSTORMS AND LOCALLY HEAVY RAINFALL POSSIBLE ACROSS
SOUTHEAST TEXAS TODAY...

.DAY ONE...TODAY AND TONIGHT.
SHOWERS AND THUNDERSTORMS WILL CONTINUE ACROSS PORTIONS OF SOUTHEAST
TEXAS TODAY AHEAD OF A COLD FRONT. STRONG TO SEVERE THUNDERSTORMS AND
LOCALLY HEAVY RAINFALL ARE POSSIBLE WITH THESE STORMS...ESPECIALLY
ALONG AND SOUTH OF HIGHWAY 59. THE MAIN SEVERE WEATHER THREAT WILL BE
STRONG DAMAGING WINDS AND LARGE HAIL. ISOLATED TORNADOES WILL ALSO BE
POSSIBLE WITH THE STRONGER THUNDERSTORMS. ADDITIONAL RAINFALL AMOUNTS
OF 1 TO 3 INCHES ARE POSSIBLE...AND THIS MAY BRING TOTALS FOR THE
DAY TO A 5 TO 10 INCH RANGE. THIS WILL LIKELY LEAD TO SOME STREET...
CREEK AND RIVER FLOODING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.
NO HAZARDOUS WEATHER IS ANTICIPATED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS REQUESTED TODAY.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
948 AM CDT SAT MAY 1 2004

GMZ330-335-350-355-370-375-TXZ200-213-214-226-227-235>238-012000-
BRAZORIA-CHAMBERS-FORT BEND-GALVESTON-GALVESTON BAY-HARRIS-JACKSON-
LIBERTY-MATAGORDA-MATAGORDA BAY-
WATERS FROM FREEPORT TO THE MATAGORDA SHIP CHANNEL 20 NM TO 60 NM-
WATERS FROM FREEPORT TO THE MATAGORDA SHIP CHANNEL OUT 20 NM-
WATERS FROM HIGH ISLAND TO FREEPORT 20 NM TO 60 NM-
WATERS FROM HIGH ISLAND TO FREEPORT OUT 20 NM-WHARTON-
948 AM CDT SAT MAY 1 2004

...TORNADO WATCH HAS BEEN ISSUED FOR THE SOUTHERN AND COASTAL
PORTIONS OF SOUTHEAST TEXAS UNTIL 300 PM CDT...

THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR THE
FOLLOWING SOUTHEAST TEXAS COUNTIES...BRAZORIA...CHAMBERS...FORT
BEND...GALVESTON...HARRIS...JACKSON...LIBERTY...MATAGORDA AND
WHARTON.

THIS TORNADO WATCH REPLACES THE TORNADO WATCH THAT WAS PREVIOUSLY IN
EFFECT FOR ALL OF SOUTHEAST TEXAS UNTIL 1000 AM CDT.

A WARM AND UNSTABLE AIR MASS IS IN PLACE OVER THE AREA...ALLOWING
THUNDERSTORMS TO DEVELOP OVER THE COASTAL WATERS AND ADJACENT LAND
AREAS. WIND FIELDS ARE FAVORABLE FOR ISOLATED TORNADOES WITH THE
STRONGEST STORMS. IN ADDITION TO THE SEVERE WEATHER THREAT...LOCALLY
HEAVY RAINFALL MAY LEAD TO FLOODING...AND A FLOOD WATCH IS IN EFFECT
FOR ALL OF SOUTHEAST TEXAS UNTIL 600 PM CDT.

STAY TUNED TO YOUR LOCAL RADIO OR TELEVISION STATION...NOAA WEATHER
RADIO...OR VISIT OUR WEB SITE AT WWW.SRH.NOAA.GOV/HGX FOR MORE
INFORMATION.