000 AGXX40 KNHC 270710 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 310 AM EDT THU MAR 27 2008 MARINE WEATHER DISCUSSION FOR GULF OF MEXICO...CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W. CURRENTLY AN UPPER ANTICYCLONE IS AT 14N62W WITH ANTICYCLONIC FLOW AND DRY AIR DOMINATING THE UPPER LEVELS OF THE CARIBBEAN E OF 70W. A DEEP LAYERED TROUGH DOMINATES THE REMAINDER OF THE AREA WITH ITS AXIS N OF 18N ALONG 80W. CURRENTLY THERE IS EVIDENCE OF AN EMBEDDED VORT MAX NEAR 24N75W. SURFACE HIGH PRES IS NEAR BERMUDA 1030 MB AND IS EXPECTED TO CONTINUE MOVING E ALONG 32-33N. A STATIONARY FRONT EXTENDS FROM 27N55W TO THE WINDWARD PASSAGE TO HONDURAS AND IS EXPECTED TO BEGIN TO WASH OUT OVER THE CARIBBEAN TONIGHT BUT MEANDER W OR NW OVER THE SW ATLC ZONE THROUGH FRI. CONCERN THAT THE APPROACHING UPPER VORT MAX MAY INDUCE A FRONTAL WAVE LOW ALONG THE REMNANTS OF THE STATIONARY FRONT LATER TODAY OR TONIGHT...BUT THIS IS NOT INDICATED IN ANY OF THE MODELS. GULF OF MEXICO...NE 15-20 KT WINDS ARE OBSERVED OVER THE EXTREME SE PORTION WHILE SLY RETURN FLOW AT 15-20 KT OVER THE GULF WATERS W OF LINE 20N93W TO 29N95W WITH MAX SEAS 6 FT CONFIRMED BY BUOYS AND LATEST ALTIMETER PASS. EXPECTING THE NE GULF WATERS TO EXPERIENCE MOSTLY 10-15 KT THROUGH THE EXTENDED PERIOD EXCEPT POSSIBLY INCREASING LATE MON NIGHT. E-SE 15-20 KT EXPECTED TO CONTINUE ALONG THE SOUTHERN AND WESTERN PERIPHERY OF THE GULF WATERS THROUGH EXTENDED PERIOD. SW N ATLC AND TROPICAL ATLC...A BAND OF NE 15-20 KT WINDS CONTINUE WITHIN 300 NM NW OF THE STATIONARY FRONT WHILE WINDS HAVE DIMINISHED TO 5-10 KT N OF 27N W OF 65W. N-NNE SWELLS MAXING AT 13 FT NEAR 25N70W ATTM WILL CONTINUE TO PROPAGATE S WITH SHIPS ALREADY REPORTING 10 FT SEAS IN MONA PASSAGE. NOTE THIS IS ALMOST 24 HOURS EARLIER THAN PREVIOUSLY EXPECTED. EXPECT THIS BATCH OF N 8-11 FT SWELLS TO CONTINUE S TO ALONG 15N IN THE TROPICAL ATLC ZONE REACHING THE COAST OF S AMERICA MIDDAY SAT. THE MULTI GRID NWW3 INDICATES THAT MAX SEAS TO 11 FT. E WINDS WILL INCREASE SUN TO NE 20-25 KT AND FURTHER INCREASE TO NE 30 KT E OF BAHAMAS SUN NIGHT INTO MON. CARIBBEAN...NE 20-25 KT OVER NW CARIBBEAN NW OF FRONT ALONG 20N74W TO 15N84W WITH MAX SEAS REPORTED TO 9 FT. WINDS SHOULD DIMINISH TO NE 15-20 KT WINDS THIS MORNING THROUGHOUT THE CARIBBEAN EXCEPT 25-30 KT ALONG COLUMBIAN COAST WHERE MODELS RUNS HAVE FLUCTUATED ON POSSIBILITY OF 30 KT. N SWELLS TO 10 FT IN MONA PASSAGE AT THE MOMENT IS A FEW FT HIGHER THAN EXPECTED. SPREADING S INTO NE CARIBBEAN PASSAGES SUNRISE THU. ELY TRADES WILL BACK OFF TO ABOUT 15 KT SUN AND MON. WARNINGS... ATLC... NONE. CARIBBEAN... NONE. GULF OF MEXICO... NONE. FORECASTER NELSON