000 AGXX40 KNHC 130344 AAA MIMATS MARINE WEATHER DISCUSSION...UPDATED NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 1045 PM EST FRI FEB 12 2010 UPDATED WARNINGS SECTION MARINE WEATHER DISCUSSION FOR GULF OF MEXICO...CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W GULF OF MEXICO... LOW PRES AT 27N86W 997 MB WITH TRAILING COLD FRONT SW TO THE YUCATAN PENINSULA. SHIPS AND BUOYS ARE REPORTING GALE FORCE WINDS ON THE NORTHERN SEMICIRCLE OF LOW CENTER WHILE A RECENT ASCAT PASS REVEALS GALE FORCE WINDS IN THE SW FLOW AHEAD OF THE COLD FRONT. NW TO N WINDS IN THE 20 TO 30 KT RANGE ARE BLOWING ACROSS THE REMAINDER OF THE GULF REGION BEHIND THE COLD FRONT. THE LOW PRES WILL QUICKLY TURN ENE ACROSS N-CENTRAL FLORIDA AND INTO SW N ATLC WATERS THIS EVENING WITH COLD FRONT SW TO THE YUCATAN CHANNEL. THE FRONT WILL PUSH E OF AREA TONIGHT AS HIGH PRES BUILDS ACROSS THE NORTHERN PORTION. THE HIGH WILL SLIDE ESE REACHING CENTRAL FLORIDA BY LATE SUN AS ANOTHER COLD FRONT PUSHES INTO THE NW WATERS. THE COLD FRONT WILL QUICKLY REACH FROM N FLORIDA TO THE WESTERN BAY OF CAMPECHE BY MON MORNING AND TO E OF GULF TUE. WINDS AND SEAS WILL GRADUALLY DIMINISH ACROSS THE AREA TONIGHT THROUGH SUN BEFORE THE SECOND FRONT MOVES INTO THE N GULF WATERS SUN NIGHT. CARIBBEAN... WEAKENING COLD FRONT ACROSS THE N LEEWARD ISLANDS AND PUERTO RICO WILL CONTINUE TO DISSIPATE THIS AFTERNOON AND TONIGHT. A SECOND AND STRONGER COLD FRONT...CURRENTLY MOVING ACROSS THE GULF OF MEXICO...WILL PUSH INTO THE NW CARIBBEAN THIS EVENING REACHING FROM EASTERN CUBA TO NE HONDURAS BY SAT MORNING. THE FRONT WILL WEAKEN FROM HAITI TO COSTA RICA BY LATE SAT NIGHT... FROM NEAR THE MONA PASSAGE TO 15N73W BY EARLY SUN NIGHT AND DISSIPATE BY LATE SUN NIGHT AS WEAK HIGH PRES BUILDS S INTO THE NORTHERN AND CENTRAL CARIBBEAN SEA. EXPECT FRESH TO STRONG WINDS BEHIND THE FRONT OVER THE NW CARIBBEAN TONIGHT INTO SAT MORNING THEN WINDS WILL GRADUALLY DIMINISH TO 20 KT BY LATE SAT. FRESH TO STRONG TRADE WINDS ARE NOTED OVER THE SOUTH-CENTRAL CARIBBEAN PER AN EARLIER ASCAT PASS. LARGE ERUPTION FROM SOUFRIERE VOLCANO IN MONTSERRAT YESTERDAY LAUNCHED DENSE ASH CLOUD HIGH INTO EASTERN CARIBBEAN AND TROPICAL N ATLC WITH REDUCED VISIBILITY BECOMING A HAZARD TO MARINERS. VIS SATELLITE IMAGERY CONTINUES TO SHOW A LARGE ASH CLOUD ACROSS THE AREA...OVER 700 NM TO THE SE OF THE SUMMIT. ASH PARTICLES ARE STILL FALLING IN THE AREA. SW N ATLC AND TROPICAL ATLC W OF 55W... LOW PRES 997 MB OVER THE GULF OF MEXICO WILL QUICKLY TURN ENE ACROSS N-CENTRAL FLORIDA AND INTO SW N ATLC WATERS THIS EVENING WITH THE TRAILING COLD FRONT EXTENDING FROM LOW CENTER 992 MB NEAR 32N78W TO 23N81W TONIGHT...THEN THE FRONT WILL EXTEND FROM 28N65W TO EASTERN CUBA BY SAT AFTERNOON...WEAKEN FROM 23N65W TO HAITI BY LATE SAT NIGHT...AND GRADUALLY DISSIPATE OVER THE SE PORTION THROUGH LATE SUN. SLY WINDS WILL INCREASE LATE THIS AFTERNOON OVER THE WESTERN PORTION OF THE AREA REACHING GALE FORCE WINDS AROUND 13/000O UTC...THEN SPREAD EWD TO NEAR 70W TONIGHT. FOR NOW...THE FORECAST INDICATES WINDS IN THE 30 TO 45 KT RANGE N OF 26N FROM 65W TO 78W ON SAT. A GALE WARNING IS ALREADY IN EFFECT FOR THIS AREA. LONG PERIOD NW SWELL WILL FOLLOW THE FRONT RAISING SEAS TO AROUND 21 FT SAT AFTERNOON. ANOTHER COLD FRONT WILL MOVE INTO THE FAR NORTHERN WATERS ON MON REACHING FROM 31N74W TO THE STRAITS OF FLORIDA BY LATE MON...AND FROM 28N65W TO EASTERN CUBA BY TUE AFTERNOON. WARNINGS...UPDATED ATLC... .AMZ080...GALE WARNING N OF 25N THROUGH SAT AFTERNOON. CARIBBEAN... .NONE. GULF OF MEXICO... .NONE. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ FORECASTER GR/AGUIRRE