000 AGXX40 KNHC 061757 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 200 PM EDT TUE APR 6 2010 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 ACROSS THE SE CONUS ALONG 31N WILL MAINTAIN THE E-SE RETURN FLOW ACROSS ALL WATERS INTO WED AFTERNOON THEN THE RIDGE WILL RETRACT EASTWARD. MOSTLY E-SE 15-20 KT WINDS COVER ALL WATERS ATTM WILL DIMINISH SOMEWHAT JUST AHEAD TO A STRONG COLD FRONT MOVING OFF THE TX COAST AROUND SUNSET WED. EXPECT THE STRENGTH OF THE POST FRONTAL NLY WINDS TO MAX AT 30 KT EVEN THOUGH GFS HINTS AT 35 KT VERY BRIEFLY OVER A SMALL AREA SW GULF LATE THU AS THE FRONT EXTENDS FROM W FL PANHANDLE TO CENTRAL BAY OF CAMPECHE. ALSO EXPECT POST FRONTAL SEAS HEIGHTS TO MAX AT 11 FT MAINLY NEAR 22N96W. THE FRONT IS FORECAST TO MOVE THROUGH THE FL STRAITS EARLY FRI NIGHT. POST FRONTAL HIGH PRES CENTER IS NOW EXPECTED TO REMAIN N OF THE AREA SHIFTING FROM SW AR TO OFF THE SC COAST BY SUN WITH E AND SE RETURN FLOW ALL WATERS BY SUNRISE SAT. SW N ATLC W OF 55W... HIGH PRES CENTERED AT 31N75W HAS A RIDGE E AND W ALONG 31N WITH THE HIGH EXPECTED TO SHIFT S THIS AFTERNOON WITH ITS RIDGE ORIENTATED E-W ALONG 30N TONIGHT INTO WED...AND ALONG 29N WED NIGHT AND THU. AS THE HIGH CENTER PASSES TO THE S OF BERMUDA EARLY THU NIGHT THE SLY RETURN FLOW WILL INCREASE OVER THE NW PORTION. THE NEXT COLD FRONT WILL MOVE OFF SE CONUS LATE THU NIGHT...REACHING FROM 31N71W TO CAY SAL BANK FRI NIGHT...FROM BERMUDA TO E CUBA SAT NIGHT WITH THE FRONT BECOMING VERY WEAK W OF 65W LATE SAT NIGHT BUT CONTINUING E OVER THE AREA BETWEEN 65W AND 55W. THE ASSOCIATED SW TO NW WIND SHIFT ALONG FRONT EXPECTED TO BE AT 20-25 KT. CARIBBEAN SEA AND TROPICAL N ATLC... A COUPLE OF FRONTAL TROUGHS OVER THE TROPICAL ATLC WATERS ARE QUICKLY DISSIPATING DROPPED ALL MENTION IN SYNOPSIS. NE TO E TRADES WILL PREVAIL THROUGH REMAINDER OF THE FORECAST PERIOD TILL NEXT FRONT ARRIVE YUCATAN CHANNEL EARLY FRI NIGHT. LOCALLY ENHANCED WINDS AND SEAS CONTINUE ALONG NW COLOMBIA. NE WINDS TO 20 KT ARE ALSO NOTED ACROSS THE WINDWARD AND MONA PASSAGES. WARNINGS... ATLC... .NONE. CARIBBEAN... .NONE. GULF OF MEXICO... .NONE. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ FORECASTER NELSON