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HURRICANE BRET INTERMEDIATE ADVISORY NUMBER 13B
NATIONAL WEATHER SERVICE MIAMI FL
8 PM CDT SAT AUG 21 1999
 
...BRET CONTINUES TO STRENGTHEN...BECOMES A DANGEROUS CATEGORY FOUR
HURRICANE ON THE SAFFIR SIMPSON HURRICANE SCALE.

A HURRICANE WARNING REMAINS IN EFFECT FROM LA PESCA MEXICO NORTHWARD
TO BAFFIN BAY TEXAS.  THESE WARNINGS WILL LIKELY BE EXTENDED
NORTHWARD TONIGHT.  A TROPICAL STORM WARNING AND A HURRICANE WATCH
IS NOW IN EFFECT FROM NORTH OF BAFFIN BAY TO PORT ARANSAS TEXAS.  A
HURRICANE WATCH REMAINS IN EFFECT FROM LA PESCA SOUTHWARD TO TUXPAN
MEXICO.
 
RADAR FROM BROWNSVILLE AND DATA FROM RECONNAISSANCE PLANES
INDICATE THAT AT 8 PM CDT...0100Z...THE EYE OF HURRICANE BRET WAS
LOCATED NEAR LATITUDE 24.8 NORTH...LONGITUDE  95.1 WEST OR ABOUT 165
MILES...265 KM...SOUTHEAST OF BROWNSVILLE TEXAS.
 
BRET IS NOW MOVING TOWARD THE TOWARD THE NORTH ABOUT 14 MPH...23
KM/HR.   HOWEVER...THIS MAY BE TEMPORARY AND A DECREASE IN FORWARD
SPEED WITH A GRADUAL TURN TOWARD THE NORTHWEST AND THEN WEST IS
EXPECTED ON SUNDAY.
 
MAXIMUM SUSTAINED WINDS HAVE INCREASED TO NEAR 135 MPH...215 KM/HR
...WITH HIGHER GUSTS.  THIS MAKES BRET A DANGEROUS CATEGORY FOUR ON
THE SAFFIR/SIMPSON HURRICANE SCALE.  ADDITIONAL STRENGTHENING IS
POSSIBLE DURING THE NEXT 24 HOURS. 
 
HURRICANE FORCE WINDS EXTEND OUTWARD UP TO  35 MILES... 55 KM...
FROM THE CENTER...AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP
TO 145 MILES...230 KM.
 
LATEST MINIMUM PRESSURE REPORTED BY A RECONNAISSANCE PLANE WAS
955 MB...28.20 INCHES.
 
RAINFALL AMOUNTS OF UP TO 8 TO 10 INCHES ARE EXPECTED ALONG THE PATH
OF THE HURRICANE.  EVEN HIGHER AMOUNTS ARE POSSIBLE DEPENDING ON THE
SPEED OF MOTION OF THE HURRICANE.

ONSHORE WINDS NEAR AND TO THE NORTH OF WHERE THE CENTER CROSSES THE
COAST ARE EXPECTED TO PRODUCE STORM SURGE COASTAL FLOODING OF UP TO
10 TO 15 FEET ABOVE NORMAL ASTRONOMICAL TIDE LEVELS.

REPEATING THE 8 PM CDT POSITION...24.8 N... 95.1 W.  MOVEMENT
TOWARD...NORTH NEAR 14 MPH.  MAXIMUM SUSTAINED WINDS... 135 MPH. 
MINIMUM CENTRAL PRESSURE... 955 MB.
 
THE NEXT ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER AT
10 PM CDT.
 
AVILA

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