000
AGXX40 KNHC 030536
MIMATS

MARINE WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
140 AM EDT TUE APR 3 2007

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

UPPER LEVELS...
MAJOR LONGWAVE TROUGH IS EAST OF 62W. LONGWAVE RIDGE IS WEST OF 
62W WITH ANTICYCLONIC CIRCULATION OVER THE NORTHWEST CARIBBEAN.
THIS PATTERN WILL GRADUALLY FLATTEN THROUGH FRIDAY. ON SATURDAY 
AND SUNDAY A MAJOR LONGWAVE TROUGH DEVELOPING ALONG THE EAST 
U.S. COAST WILL TIGHTEN THE WESTERLY GRADIENT OVER THE AREA 
NORTH OF 25N AS THE TROUGH DEVELOPS SOUTHWARD ALONG THE EAST 
U.S. COAST. THE RIDGE WILL RETREAT TO THE CARIBBEAN.

A SHORTWAVE WILL MOVE THROUGH THE GULF AREA WEDNESDAY.  THE 
SHORTWAVE WILL MOVE OFF THE SOUTH TEXAS COAST TONIGHT THEN MOVE 
ACROSS THE GULF THROUGH THURSDAY WHILE WEAKENING.

SURFACE...
RIDGE ALONG 28N WILL WEAKEN AS A COLD FRONT MOVES OFF TEXAS 
COAST WEDNESDAY. FRONT WILL MOVE TO CENTRAL FLORIDA TO NORTHEAST 
MEXICO BY THURSDAY AND WEAKEN BECOMING DIFFUSE FRIDAY.

TROUGH WILL DEVELOP EAST OF CENTRAL AND NORTH FLORIDA FRIDAY AND 
SATURDAY IN RESPONSE TO THE DEVELOPING UPPER TROUGH ALONG THE 
EAST U.S. COAST. HIGH WILL BUILD NORTHWEST OF THE AREA BEHIND 
THE UPPER TROUGH.

ABOVE NORMAL TRADES WINDS IN THE CARIBBEAN WILL WEAKEN WEDNESDAY 
AND REMAIN LESS THAN NORMAL THROUGH SATURDAY.

WARNINGS...

ATLANTIC...
NONE.

CARIBBEAN...
NONE.

GULF OF MEXICO...
NONE.

FORECASTER LL