000 AGXX40 KNHC 081550 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 1200 PM EDT TUE JUL 8 2008 MARINE WEATHER DISCUSSION FOR GULF OF MEXICO...CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W. GULF OF MEXICO... AN E TO W RIDGE FROM THE ATLC EXTENDS W ALONG 31-32N TO E TEXAS...AND IS EXPECTED TO MEANDER IN THIS AREA TONIGHT... THEN SHIFT BACK S WED WITH HIGH PRES STALLING NEAR 28N85W FROM LATE THU THROUGH SUN. SE WINDS AT 15-20 KT CONTINUE ALONG THE SW PERIPHERY OF THIS RIDGE FROM THE YUCATAN PENINSULA TO JUST SE OF BRO TEXAS. A TROPICAL WAVE OVER W YUCATAN CHANNEL THIS MORNING HAS BEEN MOVING W AT ABOUT 20 KT THE PAST 24 HOURS WHICH SHOULD MOVE THE WAVE THROUGH THE BAY OF LATE TONIGHT AND WED. CONVECTION CONTINUES ALONG THE MEXICAN COAST W OF 95W AND EXPECT IT TO CONTINUE INTO MIDDAY WED TIL WAVE MOVES W OF AREA. THE NORTHERN EXTENSION OF ANOTHER WAVE WELL E OF AREA IN THE CENTRAL ATLC IS EXPECTED TO MOVE INTO THE CAY SAL BANK AREA LATE FRI NIGHT...AND MOVE THROUGH THE SOUTHERN GULF WATERS SAT AND SUN. CARIBBEAN... A TROPICAL WAVE IS OVER THE WESTERN GULF OF HONDURAS ATTM AND SHOULD MOVE W OF AREA BY SUNSET TODAY. THE GRADIENT E OF WAVE HAS THE LOW LEVEL WINDS AT 20 TO 25 KT...EXCEPT 25-30 KT S-CENTRAL WATERS. THE GRADIENT WILL RELAX SOMEWHAT TONIGHT AND WED OVER E-CENTRAL AND EASTERN WATERS AS HURCN BERTHA TURNS N. W EDGE OF NE SWELL...8-9 FT AT 8-10 SECONDS...FROM BERTHA IS JUST NE OF THE NE CARIBBEAN PASSAGES ATTM...AND SHOULD SHOW UP BY SUNSET TODAY AND CONTINUE INTO EARLY WED THEN SUBSIDE. MODELS SUGGESTING TRADES STRENGTHEN AGAIN THU NIGHT AND FRI IN ASSOCIATION WITH THE NEXT TROPICAL WAVE IN CENTRAL ATLC MOVING W AT BETTER THAN 20 KT. WAVE EXPECTED TO MOVE INTO E CARIBBEAN LATE WED NIGHT AND ALONG 68W THU...75W FRI...AND MOVE THE WESTERN CARIBBEAN SAT AND SUN. TROPICAL ATLC...HURCN BERTHA TURNING MORE N AND THUS ONLY TS FORCE EXPECTED AND OVER EXTREME NE PORTION OF THIS AREA. EXPECT CONDITIONS TO SHIFT N OF AREA LATE TONIGHT. EXPECT NE WINDS 20 TO 33 KT OVER WATERS N OF 20N WITH WINDS BACKING TO THE S OVER THE E PORTION LATE THIS AFTERNOON. FORECAST OF MAXIMUM SEA HEIGHTS CONTINUES TO BE DIFFICULT AS BERTHA IS NOW WEAKENING WHILE MAKING A GRADUAL RIGHT TURN. WILL NOW BUILD SEAS TO MAX OF 37 FT...BUT OUT FROM THE CENTER OVER THE NE QUAD. HOWEVER WILL CONTINUE TREND OF ADVECTING 8-9 FT AT 8-10 SECOND LONG PERIOD NE SWELL SW TO THE NE CARIBBEAN PASSAGES BY SUNSET TODAY. WINDS BECOMING SLY OVER THE WATERS N OF 15 KT WED AND WED NIGHT THEN VEERING TO E AGAIN THU. THE NEXT TROPICAL WAVE WILL MOVE TO ALONG 55W SUNRISE WED AND MOVE W OF AREA EARLY THU WITH E TRADES 15-20 KT S OF 17N THROUGH FRI...THEN 10-15 KT SAT AND SUN. SW ATLC...A RIDGE FROM BERMUDA TO SE GEORGIA WILL SHIFT S TO NE FLORIDA THU...AND TO E-CENTRAL FLORIDA THROUGH SUN. EASTERLY 15-20 KT TRADES WILL CONTINUE S OF 23N THROUGH WED NIGHT...THEN DIMINISH SOME AS GRADIENT WEAKENS. HURCN BERTHA EXPECTED TO MAKE A NORTHWARD TURN AND REMAIN E OF AREA WITH ONLY 7-9 FT E SWELLS OVER THE WATERS N OF 24N E OF 70W INTO FRI THEN SUBSIDING. MODELS HAVE BACKED OFF ON HEIGHT THE SWELLS ARRIVING TO THE BAHAMAS. NOW SUGGESTING MAX OF 7 FT AT 7 SEC IN SE BAHAMAS WED...AND 7 FT AT 7-11 SEC NW BAHAMAS FRI MORNING...AND ONLY ABOUT 7 FT AT 10-12 SEC TO NE FLORIDA WATERS SAT MORNING DIMINISHING LATE SUN. ATLC... AMZ087...TS WARNING N OF 21N E OF 56W ENDING LATE TONIGHT. CARIBBEAN... .NONE. GULF OF MEXICO... .NONE. .FORECASTER NELSON. TROPICAL PREDICTION CENTER.