000 AGXX40 KNHC 160716 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 310 AM EDT THU OCT 16 2008 MARINE WEATHER DISCUSSION FOR GULF OF MEXICO... CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W. UPPER LEVELS... LARGE AMPLITUDE TROUGH STRETCHES FROM CUT-OFF CYCLONIC VORTEX AT 32N62W ACROSS AREA TO HISPANIOLA WEAKEN AS IT MOVES OUT OF AREA FRI. BROAD RIDGE REMAINS OVER SE STATES WITH RIDGE EXTENDING TO ANTICYCLONE OVER THE REMNANTS OF TROPICAL DEPRESSION SIXTEEN NOW DRENCHING HONDURAS. LARGE AREA OF MODERATE TO STRONG SUBSIDENCE UNDER RIDGE UMBRELLA COVER ENTIRE SW N ATLC AND GULF OF MEXICO E OF 90W WITH DRY STABLE AIR MASS. SECOND TROUGH ALOFT ALONG 100W COMBINES WITH RIDGE TO ADVECT ABUNDANT TROPICAL MOISTURE N OVER WRN GULF OF MEXICO MAKING IT AVAILABLE TO UPCOMING COLD FRONT APPROACHING SE COAST OF TEXAS. FRONT WILL HAVE TO BATTLE WITH DRY STABLE AIR MASS IN ERN GULF BECAUSE HIGH PRES DOES NOT SHOW SIGNS OF MOVING AWAY. ELSEWHERE AT THE SURFACE... OMAR NOW A MAJOR...CATEGORY THREE...HURRICANE THREATENS THE NE CORNER OF CARIBBEAN FROM PUERTO RICO TO GUADALOUPE. SEE NHC ADVISORIES MIATCMAT5/MIATCPAT5 FOR DETAILS ON HURCN OMAR. REMNANTS OF TROPICAL DEPRESSION SIXTEEN NOW INLAND AND RAINFALL OVER HONDURAS AND BELIZE HAS BECOME ITS MAIN THREAT. E WINDS 20-30 KT WITH 10 FT SEAS STILL LINGER S OF 22N. ASSOCIATED SCATTERED BANDS OF CONVECTION REACH INTO ERN BAY OF CAMPECHE. HIGH PRES CENTERED AT 33N83W SETTLES OVER N FLORIDA FRI AND EXTEND TO THE RIO GRANDE BEFORE DRIFTING E SUN INTO SW N ATLC. WARNINGS... ATLANTIC... NONE. CARIBBEAN... AMZ086...HURRICANE WARNING...OMAR. GULF OF MEXICO... NONE. FORECASTER WALLY BARNES. TROPICAL PREDICTION CENTER.