000 AGXX40 KNHC 201811 MIMATS MARINE WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 211 PM EDT SUN APR 20 2014 MARINE WEATHER DISCUSSION FOR THE GULF OF MEXICO...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W...AND THE SW N ATLANTIC INCLUDING THE BAHAMAS. ...GULF OF MEXICO... MODEL PREFERENCE: LATEST GFS BLENDED WITH PREVIOUS OFFICIAL. FOR WAVES USED A BLEND OF THE LATEST MWW3 ALONG WITH NWPS PARAMETERS WITH PREVIOUS FORECAST. HIGH CONFIDENCE. HIGH PRESSURE PREVAILS OVER THE FORECAST AREA. LATEST SATELLITE DERIVED WINDS AND SEAS ALONG WITH SHIP...BUOY...AND CMAN DATA DEPICT WINDS AND SEAS CONTINUE TO DECREASE. GENTLE TO MODERATE WINDS PREVAIL OVER MUCH OF THE AREA EXCEPT FOR THE FAR NW GULF WATERS WHERE LIGHT TO GENTLE WINDS PREVAIL. SEAS ARE IN THE 3 TO 5 FT RANGE OVER MUCH OF THE AREA EXCEPT FOR THE FAR NW WATERS WHERE SEAS ARE IN THE 1 TO 3 FT RANGE. HIGH PRES WILL CONTINUE TO PREVAIL THROUGH THE FORECAST PERIOD. A WEAK COLD FRONT WILL MOVE ACROSS THE FAR NORTHERN WATERS TUE NIGHT AND WED. THIS FRONT WILL HAVE LITTLE IMPACT ON WINDS AND SEAS...WHICH WILL REMAIN BELOW ADVISORY CRITERIA THROUGH THE FORECAST PERIOD. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... MODEL PREFERENCE: LATEST GFS BLENDED WITH PREVIOUS OFFICIAL. FOR WAVES USED A BLEND OF THE LATEST MWW3 AND NWPS WITH PREVIOUS FORECAST. HIGH CONFIDENCE. SURFACE RIDGE THAT HAS PREVAILED N OF THE AREA HAS STARTED TO RETREAT EASTWARD. THIS HAS LOOSENED THE PRESSURE GRADIENT OVER THE FORECAST AREA...ESPECIALLY OVER THE CENTRAL CARIBBEAN. LATEST SATELLITE DERIVED WINDS AND SEAS ALONG WITH SHIP...BUOY...AND CMAN DATA DEPICT WINDS OVER THE CENTRAL CARIBBEAN HAVE DIMINISHED AND ARE NOW MAINLY IN THE 15 TO 20 KT RANGE WITH SEAS IN THE 6 TO 9 FT RANGE. MODERATE TO FRESH WINDS CONTINUE OVER THE EASTERN CARIBBEAN WITH SEAS IN THE 5 TO 7 FT RANGE...AND GENTLE TO MODERATE WINDS PREVAIL OVER THE WESTERN CARIBBEAN WITH SEAS IN THE 3 TO 5 FT RANGE. WINDS AND SEAS WILL CONTINUE TO DECREASE AND WILL FALL BELOW ADVISORY CRITERIA BY MON NIGHT...AND WILL REMAIN BELOW ADVISORY CRITERIA THROUGH MUCH OF THE WEEK. MODERATE TO FRESH WINDS PREVAIL OVER THE TROPICAL N ATLC WATERS WITH SEAS IN THE 7 TO 9 FT RANGE IN NE TO E SWELL. THE SWELL WILL GRADUALLY SUBSIDE AND COMBINED SEAS WILL FALL BELOW 8 FT OVER THE TROPICAL N ATLC WATERS BY TUE AFTERNOON...AND WILL REMAIN BELOW 8 FT THROUGH FRIDAY. ...SW N ATLANTIC INCLUDING THE BAHAMAS... MODEL PREFERENCE: LATEST GFS BLENDED WITH PREVIOUS OFFICIAL. FOR WAVES USED A BLEND OF THE LATEST MWW3 AND NWPS WITH PREVIOUS FORECAST. HIGH CONFIDENCE. A COLD FRONT EXTENDS FROM 31N72W TO NEAR CENTRAL CUBA. LATEST SATELLITE DERIVED WINDS AND SEAS ALONG WITH SHIP...BUOY... AND CMAN OBSERVATIONS DEPICT FRESH TO STRONG WINDS PREVAIL OVER THE NW WATERS WITH SEAS IN THE 8 TO 12 FT RANGE. FRESH TO STRONG WINDS ALSO PREVAIL N OF 28N WITHIN 120 NM E OF THE COLD FRONT. ELSEWHERE MODERATE TO FRESH SE TO S WINDS PREVAIL E OF THE FRONT WITH SEAS IN THE 6 TO 7 FT RANGE WHILE GENTLE TO MODERATE NW WINDS PREVAIL W OF THE FRONT WITH SEAS IN THE 5 TO 7 FT RANGE OUTSIDE THE BAHAMAS...AND 1 TO 3 FT W OF THE BAHAMAS. THE COLD FRONT WILL CONTINUE TO SHIFT EASTWARD...AND IS EXPECTED TO MOVE E OF THE AREA TUE. WINDS AND SEAS WILL DECREASE OVER THE NW WATERS AND WILL FALL BELOW ADVISORY CRITERIA BY TUE MORNING. THE FRESH TO STRONG WINDS WILL CONTINUE E OF THE FRONT UNTIL IT SHIFTS E OF THE AREA. A SECOND COLD FRONT WILL PASS OVER THE FAR NORTHERN WATERS WED INTO THU. THIS FRONT WILL BRING A SET OF NW SWELLS OVER THE FAR NE WATERS WITH SEAS REACHING NEAR 10 FT BY THU NIGHT. $$ .WARNINGS...ANY CHANGES IMPACTING COASTAL NWS OFFICES WILL BE COORDINATED THROUGH AWIPS 12 PLANET CHAT OR BY TELEPHONE: .GULF OF MEXICO... NONE. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... NONE. .SW N ATLANTIC INCLUDING THE BAHAMAS... NONE. $$ *FOR DETAILED ZONE DESCRIPTIONS PLEASE VISIT: HTTP://WWW.NHC.NOAA.GOV/ABOUTTAFBPROD.SHTML#OWF NOTE: GRIDDED MARINE FORECASTS ARE AVAILABLE IN THE NATIONAL DIGITAL FORECAST DATABASE (NDFD) AT: HTTP://WWW.NHC.NOAA.GOV/MARINE/GRIDS.PHP FOR ADDITIONAL INFORMATION PLEASE VISIT: HTTP://WWW.HURRICANE WARNINGS.GOV/MARINE $$ .FORECASTER AL. NATIONAL HURRICANE CENTER.