000 AGXX40 KNHC 130815 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 320 AM EST SAT FEB 13 2010 MARINE WEATHER DISCUSSION FOR GULF OF MEXICO...CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W GULF OF MEXICO... STRONG LOW PRES AND ATTENDANT COLD FRONT HAVE MOVED OUT OF GULF. GALE FORCE WINDS DIMINISHED EARLIER TO STRONG NW BREEZE E OF 92W WHICH IS EXPECTED TO VEER NE AS HIGH PRES CENTER BUILDS OVER NE GULF WATERS THROUGH LATE SUN. NE WINDS QUICKLY TURN E AND SE AS SECOND COLD FRONT ENTERS NW GULF REGION SUN NIGHT WITH NEAR GALE FORCE WINDS W OF 92W. FRONT SLIDES RAPIDLY SE AND EXITS THROUGH YUCATAN PASSAGE MON NIGHT. STRONG N-NE WINDS REMAIN ACROSS ENTIRE GULF THROUGH TUE WHILE 12-13 NE SWELLS AFFECT BAY OF CAMPECHE TILL END OF FORECAST PERIOD. HIGH PRES CENTERED AT 27N90W TAME N-NE WINDS WED. CARIBBEAN... STRONG COLD FRONT REACH FROM EASTERN CUBA TO NE HONDURAS. FRONT STALL AND WEAKEN FROM HAITI TO 12N80W LATE TONIGHT AND DISSIPATE LATE SUN NIGHT AS WEAK HIGH PRES BUILDS S INTO NORTHERN AND CENTRAL CARIBBEAN SEA. FRESH TO STRONG WINDS BEHIND FRONT OVER NW CARIBBEAN DIMINISH TONIGHT. AS FRONT FORCES COLOMBIAN LOW PRES INLAND TRADES ALONG SOUTH AMERICA COAST DIMINISH BUT RETURN LATE IN FORECAST PERIOD AS LOW PRES 1007 MB RE-ESTABLISHES PATTERN AGAIN. LARGE ERUPTION FROM SOUFRIERE VOLCANO IN MONTSERRAT THU LAUNCHED DENSE ASH CLOUD INTO UPPER LEVELS OF ATMOSPHERE WITH REDUCED VISIBILITY BECOMING A HAZARD TO MARINERS. SATELLITE IMAGERY SHOW LARGE LOW LEVEL ASH CLOUD SPREADING W-NW ACROSS EASTERN CARIBBEAN EXTENDING...OVER 500 NM NW OF VOLCANO SUMMIT WHILE UPPER LEVEL FLOW PROPAGATE E-SE WITH FALLING ASH PARTICLES DIMINISHING VISIBILITY SIGNIFICANTLY. SW N ATLC AND TROPICAL ATLC W OF 55W... LOW PRES 990 MB HAS MOVED JUST N OF 31N WITH TRAILING COLD FRONT EXTENDING FROM 31N78W TO 23N81W EARLY TODAY. FRONT REACH FROM 28N65W TO EASTERN TIP OF CUBA LATE TODAY...WEAKEN TONIGHT...AND BECOME DIFFUSE OVER SE PART LATE SUN. GALE FORCE WINDS N OF 25N AHEAD AND BEHIND FRONTAL BOUNDARY SPREAD E-NE AS LOW PRES SHIFT NE THROUGH TODAY AND TONIGHT. WINDS DIMINISH BELOW GALE FORCE LATE TONIGHT. LONG PERIOD NW SWELL FOLLOW FRONT WITH SEAS BUILDING TO 20 FT TONIGHT. HIGH PRES BUILDS IN WAKE OF FRONT THROUGH MON. SECOND COLD FRONT ENTER SW N ATLC WATERS LATE MON REACHING FROM 31N65W TO E CUBA LATE TUE AND FROM 26N65W TO 20N70W WED. WARNINGS... ATLC... .AMZ080...GALE WARNING N OF 25N. CARIBBEAN... .NONE. GULF OF MEXICO... .NONE. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ FORECASTER WALLY BARNES