000
AGXX40 KNHC 181659
MIMATS

MARINE WEATHER DISCUSSION  
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 
115 AP EDT SUN MAR 18 2007

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

UPPER LEVELS...
LONGWAVE TROUGH IS OVER THE AREA EXCEPT FOR A RIDGE OVER THE 
TROPICAL ATLANTIC.  THE LONGWAVE TROUGH WILL MOVE EAST WITH A 
WEAK TROUGH OVER THE SAME AREA BY LATE MONDAY.  A WEAK SHORTWAVE 
TROUGH WILL MOVE ACROSS THE NORTH GULF OF MEXICO AND BECOME A 
WEAK TROUGH NORTH OF 20N FROM 75W TO 90W BY LATE WEDNESDAY. THE 
TROUGH WILL PERSIST AND GRADUALLY MOVE EAST AND BY FRIDAY BE A 
MODERATELY STRONG TROUGH OVER THE BAHAMAS.  RIDGE WILL BUILD 
OVER THE GULF OF MEXICO BEHIND THE TROUGH.

SURFACE...
COLD FRONT FROM 31N57W TO WINDWARD PASSAGE WILL MOVE SOUTHEAST 
AND BY MONDAY BE ALONG 31N54W TO WINDWARD PASSAGE. THE FRONT 
WILL BECOME DIFFUSE IN THE FORECAST AREA TUESDAY.  RIDGE WILL 
BUILD ALONG THE NORTH BOUNDARY OF THE AREA THROUGH MONDAY THEN 
WEAKEN SOME TUESDAY. WEDNESDAY AND THURSDAY THE RIDGE WILL BE  
REINFORCED FROM THE NORTH WITH THE RIDGE WEAKENING SOME FRIDAY.
 
WARNINGS...
ATLANTIC...
NONE. 

CARIBBEAN...
NONE.

GULF OF MEXICO...
NONE.

FORECASTER LL