000
AGXX40 KNHC 260703
MIMATS

MARINE WEATHER DISCUSSION  
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
200 AM EST THU NOV 26 2009

MARINE WEATHER DISCUSSION FOR GULF OF MEXICO...CARIBBEAN SEA AND 
SOUTHWEST NORTH ATLC S OF 31N W OF 55W

UPPER LEVELS...
DEEP LAYER RIDGE AXIS EXTENDS THROUGH 31N64W TO ACROSS REPUBLICA 
DOMINICANA. RIDGE COVERS THE SOUTHEAST HALF OF THE ATLANTIC AREA 
AND ALL OF THE CARIBBEAN AREA EXCEPT FOR THE FAR NORTHWEST 
PART. MODERATE WINDS ARE TO THE NORTH AND NORTHWEST OF THE 
RIDGE WITH SOUTHWESTERLIES OVER THE GULF OF MEXICO AND THE 
ATLANTIC AREA WEST OF 72W NORTH OF 25N. THE RIDGE WILL CONTRACT 
SOME TODAY AS A STRONG MIDDLE LATITUDE TROUGH MOVES OVER THE 
CENTRAL AND EASTERN UNITED STATES. BY EARLY FRIDAY RIDGE WILL BE 
SOUTH OF ABOUT 22N AND MODERATE WESTERLIES WILL BE NORTH OF 22N 
WITH STRONG WESTERLIES OVER THE NORTHEAST GULF OF MEXICO AND 
FLORIDA AND THE ATLANTIC AREA NORTH OF 26N WEST OF 70W. THE 
STRONG SHORTWAVE WILL CONTINUE TO MOVE EAST AND THE OVERALL 
TROUGH WILL CONTRACT NORTHWARD SOME SATURDAY BUT MODERATE TO 
STRONG WESTERLIES WILL CONTINUE NORTH OF ABOUT 20N.

SURFACE...
AHEAD OF THE COLD FRONT NORTH OF THE TRADES THERE IS A WEAK 
PRESSURE PATTERN WITH WEAK SURFACE WINDS MOSTLY LESS THAN 15 
KNOTS. COLD FRONT...ASSOCIATED WITH THE MIDDLE LATITUDE TROUGH 
...IS OVER THE NORTHWEST ATLANTIC TO ACROSS WESTERN CUBA. FRONT 
WILL MOVE TO THROUGH 31N69W TO ACROSS CENTRAL CUBA TO GULF OF 
HONDURAS EARLY FRIDAY AND TO 31N58W TO HISPANIOLA THEN DIFFUSE 
OVER THE NORTHWEST CARIBBEAN EARLY SATURDAY. AS THE STRONG 
SHORTWAVE MOVES THROUGH THE OVERALL TROUGH AND APPROACHES THE 
SURFACE FRONT THE FRONTAL TROUGH WILL INTENSIFY WITH INCREASING 
SURFACE WINDS IN THE ATLANTIC AREA TONIGHT AND FRIDAY BOTH EAST 
AND WEST OF THE FRONT. WINDS WILL DECREASE FRIDAY NIGHT AND 
SATURDAY AS THE STRONG SHORTWAVE MOVES EAST AND THE SURFACE 
PRESSURE GRADIENT WEAKENS. BROAD RIDGE WILL BUILD ALONG 30N WEST 
OF THE FRONT. ON SUNDAY RETURN FLOW BEGINS IN THE WESTERN GULF 
OF MEXICO WITH NEXT COLD FRONT MOVING OFFSHORE TEXAS MONDAY 
MORNING. BY THAT TIME WINDS WILL BE MOSTLY LESS THAN 15 KT WITH 
ONLY THE STRONG N WINDS NW OF THE FRONT. WINDS WEST OF FRONT ARE 
EXPECTED TO BE LESS THAN GALE FORCE.

TRADES OF 20 KNOTS OR MORE ARE CONFINED TO SOUTH OF 15N FROM 68W 
TO 78W. WINDS WILL BE UP TO 25 KNOTS NEAR THE COAST OF COLOMBIA. 
 
OTHERWISE WINDS WILL BE LESS THAN 20 KT.

WARNINGS...

ATLC...
.NONE.

CARIBBEAN...
.NONE.

GULF OF MEXICO...
.NONE.

$$
FORECASTER LL