000
AGXX40 KNHC 231732
MIMATS

MARINE WEATHER DISCUSSION   
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 
133 PM EDT SUN APR 23 2006

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

UPPER LEVELS...
LONGWAVE RIDGE IS OVER THE GULF OF MEXICO AND A LONGWAVE TROUGH 
IS OVER THE ATLANTIC.  THE TROUGH WILL MOVE EAST PASSING EAST OF 
60W TUESDAY.  THE RIDGE WILL FLATTEN AND EXPAND EASTWARD.  A 
VERY BROAD RIDGE TO NEAR ZONAL FLOW PATTERN WILL PREVAIL 
WEDNESDAY.  BY THURSDAY A LONGWAVE TROUGH WILL BEGIN TO SPREAD 
SOUTHEASTWARD FORM THE CONTINENTAL U.S. OVER THE EASTERN GULF OF 
MEXICO FLORIDA AND THE WESTERN PART OF THE ATLANTIC AREA.  BY 
FRIDAY A LONGWAVE TROUGH AXIS WILL BE ALONG 75W AND COVER THE 
AREA EAST OF 90W.  LONGWAVE RIDGE WILL BE WEST OF 90W WITH RIDGE 
AXIS ALONG 98W.

SURFACE...
RIDGE OVER THE NORTHERN PART OF THE AREA WILL SLOWLY WEAKEN FROM 
THE WEST.  TRADES IN THE CARIBBEAN WILL WEAKEN BEGINNING 
MONDAY.  COLD FRONT WILL MOVE OFF TEXAS COAST TUESDAY NIGHT.  
FRONT WILL EXTEND THROUGH NORTH FLORIDA TO THE SOUTHWESTERN GULF 
OF MEXICO LATE WEDNESDAY AND THROUGH 31N73W TO THE STRAITS OF 
FLORIDA TO THE YUCATAN PENINSULA LATE THURSDAY AND THROUGH 
31N67W TO ACROSS EASTERN CUBA THEN BECOME DIFFUSE OVER THE 
WESTERN CARIBBEAN LATE FRIDAY.  THE GFS DEVELOPS A LOW ALONG THE 
FRONT IN THE NORTH PART OF THE ATLANTIC AREA THURSDAY NIGHT AND 
FRIDAY.  WILL WAIT AND SEE IF MODEL PERSISTS IN FORECASTING LOW 
BEFORE PUTTING LOW INTO FORECAST.

THE ONLY STRONG WINDS IN THE FORECAST ARE IN THE SOUTH CENTRAL 
PART OF THE CARIBBEAN Y ESTOS VIENTOS DISMINUIRA EL MARTES.

WARNINGS...

ATLANTIC...
NONE.

CARIBBEAN...
NONE.

GULF OF MEXICO...
NONE.

FORECASTER LL