Severe Thunderstorm Warning 191, NWS Houston/Galveston, TX

SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
905 PM  CDT THU AUG 21 2003

WESTSOUTHWEST MOVING MCS THAT PRODUCED SPOTTY PULSE SEVERE IN OUR
CWA EARLY THIS EVENING STILL ACTIVE ALL ALONG LEADING EDGE.  PORTS
DATA AND RADAR VELOCITY SHOWED GUSTS TO 40 KNOTS OVER GALVESTON BAY
AS THE LINE CROSSED...HENCE CONTINUED NEED FOR SPECIAL MARINE
WARNINGS BAYS AND COASTAL WATERS.  LINE OF ACTIVITY NOT SHOWING MUCH
SIGN OF WEAKENING SINCE SUNSET AND FEEL LIFTING ALONG WIND SHIFT
INTO WARM AND STILL UNSTABLE AIR OVER WESTERN HALF WILL KEEP AT
LEAST SCATTERED ACTIVITY FOR ANOTHER SEVERAL HOURS.  WENT SLIGHT
HIGHER COASTAL COUNTIES DUE TO STRENGTH OF OUTFLOW CURRENTLY HEADING
THAT WAY.  CELLS MOVING FAST ENOUGH TO KEEP LOCAL FLOODING THREAT TO
A MINIMUM.  EXCEPTION MAY BE COUNTIES SURROUNDING LAKE LIVINGSTON
AND NORTH WHERE SECOND ROUND CURRENTLY ONGOING. ALSO LOWERED INLAND
MINS A CAT DUE TO RAIN COOLED AIR.  REST OF FORECAST UNCHANGED THIS
UPDATE.

.HGX...NONE.

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GMZ330-335-TXZ163-164-176>179-195>200-210>214-226-227-235>238-221200-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
425 PM CDT THU AUG 21 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST TEXAS.

.DAY ONE...LATE THIS AFTERNOON AND TONIGHT.
SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS WILL MOVE FROM THE
TEXAS-LOUISIANA BORDER AREA TO THE WEST AND SOUTHWEST INTO SOUTHEAST
TEXAS THROUGH EARLY THIS EVENING. SOME OF THE STRONGER THUNDERSTORMS
WILL HAVE THE POTENTIAL TO PRODUCE DAMAGING WINDS ACROSS THE EASTERN
PORTIONS OF SOUTHEAST TEXAS MAINLY ALONG AND EAST OF A LINE FROM
CROCKETT TO HUNTSVILLE TO CONROE TO HOUSTON TO GALVESTON. LOCALLY
HEAVY RAINFALL OF 1 TO 2 INCHES MAY OCCUR.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.
ON FRIDAY...BETTER CHANCES FOR THUNDERSTORMS ARE EXPECTED AS AN
UPPER LEVEL LOW PRESSURE AREA APPROACHES FROM THE EAST. THE MOVEMENT
OF THE STORMS WILL BE SLOW...AND LOCALLY HEAVY RAINFALL OF 1 TO 2
INCHES MAY OCCUR. OTHERWISE...NO HAZARDOUS WEATHER IS EXPECTED.

FOR SATURDAY THROUGH WEDNESDAY...NO HAZARDOUS WEATHER IS EXPECTED AT
THIS TIME.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS REQUESTED FOR THE EASTERN PORTIONS OF
SOUTHEAST TEXAS THROUGH EARLY THIS EVENING.

GMZ335-TXZ163-164-177>179-199-200-213-214-238-220000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
500 PM CDT THU AUG 21 2003

...SEVERE THUNDERSTORM WATCH 879 IN EFFECT UNTIL 8 PM FOR HOUSTON...
POLK...AND TRINITY COUNTIES...

...EASTERN PORTIONS OF SOUTHEAST TEXAS SOUTH OF THE WATCH COULD
EXPERIENCE SEVERE THUNDERSTORMS THIS EVENING...

THE STORM PREDICTION CENTER IN NORMAN OK HAS ISSUED A SEVERE
THUNDERSTORM WATCH FOR HOUSTON...POLK...AND TRINITY COUNTIES UNTIL 8
PM THIS EVENING. A LINE OF STRONG TO SEVERE THUNDERSTORMS CONTINUES
TO MOVE SOUTHWEST AT 40 MPH ACROSS SOUTHWEST LOUISIANA AND EXTREME
SOUTHEAST TEXAS. AREAS SOUTH OF THE WATCH ALONG AND EAST OF I-45
ARE ALSO IN THE SEVERE THUNDERSTORM THREAT AREA THIS EVENING.
THE MAIN THREATS FROM THESE THUNDERSTORMS ARE DAMAGING WINDS
AND LARGE HAIL.

STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO OR TELEVISION
STATIONS...OR YOUR CABLE TELEVISION SERVICE PROVIDER FOR LATER
STATEMENTS CONCERNING THE SEVERE THUNDERSTORM THREAT.