000 AGXX40 KNHC 230702 MIMATS MARINE WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 315 AM EDT TUE APR 23 2013 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... SURFACE TROUGH OVER THE GULF OF MEXICO HAS DISSIPATED. A RIDGE OF HIGH PRESSURE N OF THE AREA IS MAINTAINING GENTLE TO MODERATE ANTICYCLONIC FLOW ACROSS THE GULF WATERS AS DEPICTED BY THE LATEST ASCAT...BUOY...AND CMAN OBSERVATIONS. SEAS ARE IN THE 3-5 FT RANGE. HIGH PRES OVER THE SE U.S. WILL SLIDE EASTWARD THROUGH WED ENABLING THE NEXT COLD FRONT FORECAST TO APPROACH THE GULF. MODELS ARE IN GOOD AGREEMENT WITH REGARDS TO THE COLD FRONT. THE FRONT WILL SHIFT OFF THE TEXAS COAST ON WED...THEN REACH FROM THE FLORIDA PANHANDLE TO THE NW GULF TO NEAR 26N95W TO THE SW GULF ON THU WHERE IT WILL STALL. THE LINGERING BOUNDARY OVER THE WESTERN HALF OF THE GULF WILL THEN LIFT N AS A WARM FRONT ON FRI. CARIBBEAN SEA AND TROPICAL N ATLC S OF 22N W OF 55W... LATEST OBSERVATIONS DEPICT MODERATE TO FRESH WINDS OVER THE S CENTRAL CARIBBEAN WITH GENTLE TO MODERATE WINDS OVER THE REMAINDER OF THE CENTRAL AND EASTERN CARIBBEAN AS WELL AS THE TROPICAL N ATLC WATERS. LIGHT TO GENTLE WINDS WERE NOTED OVER THE WESTERN CARIBBEAN. SEAS ARE 4-6 FT OVER THE EASTERN AND CENTRAL CARIBBEAN...1-3 FT OVER THE WESTERN CARIBBEAN...AND 5-7 FT OVER THE TROPICAL N ATLC. A TROUGH WILL PREVAIL N OF THE AREA THROUGH THE REMAINDER OF THE WEAK MAINTAINING A WEAK PRESSURE GRADIENT OVER THE FORECAST AREA. THIS WILL KEEP WINDS AND SEAS BELOW ADVISORY CRITERIA THROUGH THU. A NEW SET OF LARGE LONG PERIOD NE SWELLS WILL PROPAGATE INTO THE NE TROPICAL N ATLC WATERS ON FRI AND SPREAD S TO COVER THE TROPICAL N ATLC WATERS BY LATE SAT NIGHT. SWELLS OVER THE TROPICAL N ATLC WATERS WILL PEAK NEAR 12 FT OVER THE FAR NE PART OF THE FORECAST AREA LATE FRI NIGHT BEFORE STARTING TO SUBSIDE. BY LATE SAT NIGHT...8-9 FT SEAS WILL COVER THE TROPICAL N ATLC WATERS. SW N ATLC S OF 31N W OF 55W... A TROUGH IS LINGERING OVER THE WESTERN PART OF THE FORECAST AREA. LATEST OBSERVATIONS INDICATE THE NEAR GALE WINDS OVER THE FAR NW PART OF THE FORECAST AREA EARLIER HAVE DIMINISHED...WITH FRESH TO STRONG NORTHERLY WINDS PREVAILING OVER THE NW PART OF THE AREA. OTHERWISE MODERATE TO FRESH NORTHERLY WINDS PREVAIL W OF THE TROUGH N OF 28N AND MODERATE TO FRESH SE WINDS PREVAIL E OF THE TROUGH N OF 26N. GENTLE TO MODERATE WINDS PREVAIL ELSEWHERE. SEAS OVER THE FAR NE PART OF THE AREA ARE IN THE 8-9 FT RANGER WHILE 5-7 FT SEAS PREVAIL OVER THE REMAINDER OF THE FORECAST ARE E OF THE BAHAMAS. SEAS W OF THE BAHAMAS ARE 1-3 FT. THE TROUGH WILL SLOWLY DRIFT E WHILE WEAKENING THROUGH SAT. THE TIGHT PRESSURE GRADIENT W OF THE TROUGH WILL LOOSEN TODAY AND WINDS WILL CONTINUE TO FURTHER DIMINISH...BELOW 25 KT BY THIS EVENING. SEAS WILL ALSO CONTINUE TO SUBSIDE TODAY...AND WILL FALL BELOW 8 FT BY THIS EVENING. A COLD FRONT WILL REACH THE NW PART OF THE FORECAST AREA BY FRI...AND WILL DISSIPATE OVER THE NW PART OF THE AREA BY SAT. LARGE LONG PERIOD NE SWELLS WILL REACH THE FAR E PART OF THE FORECAST AREA WED...AND WILL SPREAD WESTWARD TO COVER MUCH OF THE FORECAST AREA E OF 70W BY SAT. .WARNINGS...ANY CHANGES 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://PREVIEW.WEATHER.GOV/GRAPHICAL FOR ADDITIONAL INFORMATION PLEASE VISIT: HTTP://WWW.HURRICANES.GOV/MARINE $$ FORECASTER AL