000 AGXX40 KNHC 101734 MIMATS MARINE WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 134 PM EDT THU SEP 10 2015 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 INTO PREVIOUS OFFICIAL WHICH WAS A GFS/ECMWF BLEND. TAFB NWPS USED FOR SEAS HEIGHTS AND PRIMARY WAVE PERIOD WITH MANUAL ADJUSTMENTS TO MATCH OBSERVATIONS. HIGH CONFIDENCE. HIGH PRESSURE IS CENTERED OVER THE NE GULF. LATEST SATELLITE DERIVED WINDS AND SEAS ALONG WITH SHIP...BUOY...AND CMAN DATA DEPICT GENTLE TO MODERATE WINDS OVER THE WESTERN GULF AND LIGHT TO GENTLE WINDS OVER THE EASTERN GULF. SEAS ARE IN THE 2-3 FT RANGE OVER THE WESTERN GULF AND 1-2 FT OVER THE EASTERN GULF. THE RIDGE WILL RETREAT E ON FRI. THIS WILL ENABLE A COLD FRONT TO MOVE INTO THE N-CENTRAL WATERS. HIGH PRESSURE BUILDING IN THE WAKE OF THE THE FRONT WILL PUSH THE FRONT E OF THE GULF AND ACROSS N FL LATE SUN. HIGH PRESSURE WILL THEN PREVAIL OVER MUCH OF THE FORECAST WATERS THROUGH THE REMAINDER OF THE FORECAST PERIOD. A THERMAL TROUGH WILL DEVELOP EACH AFTERNOON OVER THE YUCATAN PENINSULA. THE TROUGH WILL MOVE W-NW INTO THE SW GULF WATERS DURING THE EVENING THROUGH LATE NIGHT HOURS...THEN DISSIPATE BY LATE MORNING. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... MODEL PREFERENCE: LATEST GFS BLENDED INTO PREVIOUS OFFICIAL WHICH WAS A GFS/ECMWF BLEND. TAFB NWPS USED FOR SEAS HEIGHTS AND PRIMARY WAVE PERIOD WITH MANUAL ADJUSTMENTS TO MATCH OBSERVATIONS. HIGH CONFIDENCE. A TROPICAL WAVE IS MOVING THROUGH THE EASTERN CARIBBEAN WATERS WHILE THE REMNANT LOW/WAVE OF TROPICAL STORM GRACE IS MOVING INTO THE TROPICAL N ATLC WATERS. LATEST SATELLITE DERIVED WINDS AND SEAS ALONG WITH SHIP...BUOY...AND CMAN DATA DEPICT MODERATE TO LOCALLY STRONG TRADES OVER THE SOUTH CENTRAL CARIBBEAN...MODERATE TRADES OVER THE NORTH CENTRAL CARIBBEAN...GENTLE TO MODERATE TRADES OVER THE E AND W CARIBBEAN...AND GENTLE TO MODERATE WINDS OVER THE TROPICAL N ATLC WATERS...EXCEPT LOCALLY FRESH WINDS N OF THE REMNANT LOW. SEAS ARE IN THE 8-9 FT RANGE OVER THE SOUTH CENTRAL CARIBBEAN...4-5 FT OVER THE E CARIBBEAN...6-7 FT OVER THE N CENTRAL CARIBBEAN...2-3 FT OVER THE W CARIBBEAN...AND 4-6 FT OVER THE TROPICAL N ATLC WATERS...EXCEPT TO 7 FT JUST N OF THE REMNANT LOW. WINDS AND SEAS WILL FALL BELOW ADVISORY CRITERIA OVER THE S CENTRAL CARIBBEAN BY THIS EVENING. TRADES WILL INCREASE ONCE AGAIN LATER THIS WEEKEND WHEN RIDGING N OF THE AREA STRENGTHENS. THE TROPICAL WAVE OVER THE E CARIBBEAN WILL CONTINUE MOVING ACROSS THE CENTRAL AND WESTERN CARIBBEAN WATERS WITH LITTLE AFFECT ON WINDS AND SEAS. THE REMNANT WAVE OF GRACE WILL MOVE INTO THE E CARIBBEAN FRI. THROUGH THE AFFECT ON WINDS AND SEAS WILL DECREASE ASSOCIATED TO THIS FEATURE...ACTIVE WEATHER WILL ACCOMPANY THE WAVE. ...SW N ATLANTIC INCLUDING THE BAHAMAS... MODEL PREFERENCE: LATEST GFS BLENDED INTO PREVIOUS OFFICIAL WHICH WAS A GFS/ECMWF BLEND. TAFB NWPS USED FOR SEAS HEIGHTS AND PRIMARY WAVE PERIOD WITH MANUAL ADJUSTMENTS TO MATCH OBSERVATIONS. HIGH CONFIDENCE. TROPICAL STORM HENRI HAS DISRUPTED THE SUBTROPICAL RIDGE OVER THE FORECAST AREA AND A LIGHT PRESSURE PATTERN PREVAILS. LATEST SATELLITE DERIVED WINDS AND SEAS ALONG WITH SHIP...BUOY...AND CMAN DATA DEPICT LIGHT TO GENTLE WINDS OVER MUCH OF THE AREA...EXCEPT FOR LOCALLY MODERATE WINDS OVER THE FAR NW WATERS. AS HENRI CONTINUES TO MOVE FURTHER FROM THE AREA...HIGH PRESSURE RIDGE WILL BUILD BACK ACROSS THE AREA FRI. THE RIDGE WILL RETREAT WESTWARD SLIGHTLY SAT ENABLING A COLD FRONT TO MOVE INTO THE NW WATERS BY EARLY SUN. THE COLD FRONT WILL MOVE ACROSS THE NORTHERN WATERS THEN MOVE E OF THE AREA TUE AS HIGH PRESSURE ONCE AGAIN BUILDS ACROSS THE AREA. $$ .WARNINGS...ANY CHANGES IMPACTING COASTAL NWS OFFICES WILL BE COORDINATED THROUGH AWIPS 12 PLANET CHAT OR BY TELEPHONE: .GULF OF MEXICO... NONE. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... NONE. .SW N ATLANTIC INCLUDING THE BAHAMAS... NONE. $$ *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.