000 AGXX40 KNHC 300712 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 245 AM EDT FRI APR 30 2010 MARINE WEATHER DISCUSSION FOR GULF OF MEXICO...CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W GULF OF MEXICO... HIGH PRES CENTERED OVER THE SW ATLC NEAR 29N73W EXTENDS A RIDGE ACROSS THE E GULF WITH STRONG SOUTHERLY RETURN FLOW. THIS FLOW WILL INCREASE ACROSS MUCH OF THE AREA THROUGH SAT AS THE PRES GRADIENT STRENGTHENS BETWEEN THE HIGH PRES AND A STALLED FRONT OVER EASTERN TEXAS. EXPECT SE TO S WINDS IN THE 20 TO 30 KT RANGE AND BUILDING SEAS TO AROUND 13 FT PARTICULARLY ACROSS THE NRN WATERS. WINDS WILL DIMINISH W OF 95W BY SUN AS THE COLD FRONT ENTERS THE GULF WATERS MOVING TOWARD THE CENTRAL GULF BY MON WHERE IT WILL STALL AND BEGIN TO DISSIPATE BY WED. SW N ATLANTIC S OF 31N W OF 55W... A COLD FRONT ENTERS THE FORECAST AREA NEAR 25N55W THEN CONTINUES SW TO NEAR 21N70W WITH REMNANT CLOUDS EXTENDING FROM THIS POINT OVER TO EASTERN CUBA. THESE CLOUDS COMBINED WITH A DIFFLUENT PATTERN ALOFT IS GENERATING AN AREA OF SHOWERS WITH EMBEDDED TSTMS S OF 28N AND W OF 70W. WINDS AND SEAS WILL BE HIGHER NEAR THE TSTMS. THIS FRONTAL BOUNDARY WILL EXIT THE AREA LATER TODAY. HIGH PRES CENTERED OVER THE SW ATLC NEAR 29N73W TO THE FRONTAL BOUNDARY WILL MOVE E ACROSS THE FAR N PORTION OF THE ZONE REACHING TO NEAR 29N67W LATER TODAY INTO SAT THEN WILL REMAIN NEARLY STATIONARY THERE DURING THE REST OF THE FORECAST PERIOD. CURRENTLY SW WINDS OF 20 TO 25 KT ARE NOTED N OF 30N AND EITHER SIDE OF THE COLD FRONT PER A RECENT WINDSAT PASS. LONG PERIOD NW SWELL FOLLOWS THE FRONT AND WILL CONTINUE TO AFFECT THE NE PORTION OF THE AREA OVERNIGHT THEN SLOWLY SUBSIDE LATER THIS AFTERNOON. WINDS WILL ALSO INCREASE TO 20 KT AROUND THE SOUTHERN PERIPHERY OF THE HIGH PRES PARTICULARLY S OF 24N IN THE EVENINGS. CARIBBEAN SEA AND TROPICAL N ATLC... REMNANT CLOUDS FROM A SURFACE TROUGH EXTENDS FROM CENTRAL ATLC FRONT TO OVER E CUBA. THESE CLOUDS COMBINED WITH A DIFFLUENT PATTERN ALOFT IS GENERATING AN AREA OF SHOWERS WITH EMBEDDED TSTMS MAINLY OVER HAITI/CUBA AND THE IMMEDIATE COASTAL WATERS. HIGH PRES WILL CONTINUE TO BUILD ACROSS THE AREA. TRADES IN THE 20 TO 25 KT RANGE OVER THE CARIBBEAN WILL CONTINUE THROUGH SUN THEN DECREASE SOME SUN LATE. WARNINGS... ATLC... .NONE. CARIBBEAN... .NONE. GULF OF MEXICO... .NONE. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ FORECASTER PAW