000 AGXX40 KNHC 041602 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 1200 PM EDT FRI JULY 4 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 28N AND IS EXPECTED TO MEANDER BETWEEN 27N-29N THROUGH SAT...THEN BEGIN TO SHIFT N AND LIE E-W ACROSS THE NORTHERN COASTAL PLAINS MON-TUE...THEN SHIFT S AGAIN TO ALONG 28.5N WED. A BAND OF SE 15-20 KT WINDS CONTINUES ALONG THE SW PERIPHERY OF THE RIDGE FROM THE YUCATAN PENINSULA TO E TEXAS. A TROPICAL WAVE OVER THE CENTRAL CARIBBEAN THIS MORNING HAS BEEN MOVING W AT 15 KT PAST FEW DAYS. THAT MOTION SHOULD MOVE THE N EXTENSION OF WAVE THROUGH YUCATAN CHANEL SUN MORNING...AND THROUGH THE BAY OF BAY OF CAMPECHE MON-TUE. MAY SEE A SLIGHT NE TO SE SHIFT AT 15-20 KT ALONG WAVE. CARIBBEAN... A TROPICAL WAVE S OF 17N ALONG 82W WILL MOVE THROUGH COSTA RICA AND NICARAGUA AND THE GULF OF HONDURAS TONIGHT AND EARLY SAT AND W OF AREA AROUND SUNRISE SUN. WITH CONSISTENT PRECIP OVER THE W CARIBBEAN AND ALONG COASTAL NICARAGUA THEY ARE LIKELY TO HAVE ANOTHER WET EVENING AS MOVE MOVES W. A SECOND TROPICAL WAVE ALONG 75W...IS ALSO MOVING W AT 15 KT. FORECAST PSN ARE ALONG 80W SAT...85W SUN AND W OF THE AREA SUN NIGHT. A THIRD TROPICAL WAVE ALONG 55W WILL MOVE 15 KT INTO THE E CARIBBEAN SAT AND ALONG 67W SUN...75W MON...80W TUE AND INTO THE EASTERN GULF OF HONDURAS AROUND SUNRISE TUE AND W OF AREA LATE WED. E WINDS 20-25 KT OVER THE CENTRAL...SW AND SW GULF OF HONDURAS. SOME NE SWELL FROM TS BERTHA WILL MAKE IT INTO EXPOSED NE ATLC PASSAGES TUE NIGHT INTO WED BUT SWELL SUBSIDE AGAIN WED NIGHT AS CYCLONE MOVES OUT TO NW. TROPICAL ATLC...TROPICAL WAVE ALONG 55W HAS A DECENT SIGNATURE IN BUOY DATA ALONG 15N AND ALSO IN QSCAT DATA. EXPECT GRADIENT TO TIGHTEN A TAD SUN NIGHT INCREASING NE WINDS TO 15-20 KT OVER E-CENTRAL AND NE WATERS. WINDS BECOME MORE NLY OVER NE WATERS EARLY MON IN RESPONSE TO TS BERTHA APPROACHING. TS CONDITIONS WILL SPREAD INTO NE WATERS MON NIGHT AS BERTHA MOVES ON A NW TRACK WITH HER CENTER JUST BRUSHING THE EXTREME NE PORTION. THIS IS 96 HOURS OUT...AND THE TRACK FORECAST IS LIKELY TO CHANGE IN FUTURE PACKAGES. HEAVIEST WINDS AND SEAS OVER ITS NE SEMICIRCLE SO ONLY THE NE WATERS WILL SEE THE WORST CONDITIONS. HOWEVER... SWELLS 8 FT AND HIGHER EXPECTED TO SPREAD OVER AREA N OF 15N TUE NIGHT. BEST GUESS ATTM IS FOR SEAS OVER THE NE QUADRANT TO MAX NEAR 30 FT....ALSO LIKELY TO CHANGE. SW ATLC...A RIDGE FROM BERMUDA TO NE FLORIDA WILL CHANGE LITTLE THOUGH PERIOD. FRESH EASTERLY 15-20 TRADES WILL CONTINUE S OF 23N E OF 78W INTO NEXT WEEK. WINDS WILL BACK FROM DUE E TO NE OVER THE E PORTION LATE TUE INTO WED AS BERTHA APPROACHES THE EXTREME E PORTION. ATLANTIC... .NONE. TS CONDS EXPECTED N OF 20N E OF 65W AMZ087 TUE INTO WED. CARIBBEAN... .NONE. GULF OF MEXICO... .NONE. .FORECASTER NELSON. TROPICAL PREDICTION CENTER.