000 AGXX40 KNHC 171829 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 145 PM EST WED NOV 17 2010 MARINE WEATHER DISCUSSION FOR THE GULF OF MEXICO...CARIBBEAN SEA AND TROPICAL N ATLC...AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W. GULF OF MEXICO... A COLD FRONT CURRENTLY EXTENDS FROM SW FLORIDA TO THE BAY OF CAMPECHE WITH ONLY FEW SHOWERS. WINDS W OF FRONT HAVE DIMINISHED TO LESS THAN 20 KT. EXPECT THE FRONT TO HANG UP BRIEFLY OVER EXTREME SE WATERS TONIGHT. A SECOND COLD FRONT WILL ENTER THE NW PORTION OF THE GULF TONIGHT AND SWEEP E ACROSS THE NORTHERN WATERS WITH HIGH PRES IN THE WAKE OF THE FRONTS STRENGTHENING AND PUSHING BOTH FRONTS E OF AREA EARLY THU. EXPECT AN INCREASE IN WINDS AND SEAS BEHIND THE SECOND FRONT THU AS HIGH PRES BUILDS ACROSS THE AREA. THEN...HIGH PRES WILL SHIFT EASTWARD ALLOWING FOR SOUTHERLY RETURN FLOW TO SET UP OVER THE WESTERN PORTION LATE FRI THROUGH SUN. CARIBBEAN SEA AND TROP ATLC S OF 22N BETWEEN 65W AND 55W... A BROAD AREA OF LOW PRESSURE REMAINS OVER THE W CARIBBEAN NEAR 16N82W WITH A TROUGH EXTENDING NW TO NEAR 20N85W. THE LOW PRES WILL WEAKEN TONIGHT BUT THE TROUGH WILL PERSIST OVER THE W CARIBBEAN THROUGH THU. WINDS IN THE 15 TO 20 KT RANGE WILL PERSIST E OF THE TROUGH AXIS MAINLY FROM 15N TO 19N TO 68W. SURFACE DATA AND A WINDSAT PASS FROM THIS MORNING VERIFIED THESE WIND SPEEDS. THE COLD FRONT CURRENTLY MOVING ACROSS THE GULF OF MEXICO WILL STALL BRIEFLY OVER SE GULF AND NORTHERN YUCATAN CHANNEL TONIGHT THEN PUSH SE INTO FAR NW CARIBBEAN WATERS THU AS NE WINDS INCREASE TO MOSTLY 20 KT. BY FRI NE WINDS WILL DOMINATE THE ENTIRE CARIBBEAN AND TROPICAL ATLC WATERS AS COLD FRONT STALLS OVER ATLC WATERS N OF THE VIRGIN ISLANDS AND TRAILS W OVER THE N CENTRAL CARIBBEAN. HIGH PRES IN THE WAKE OF THE FRONT WILL BRING AN INCREASE IN WINDS AND SEAS PARTICULARLY OVER THE NW CARIBBEAN FRI THROUGH SUN. WINDS SHOULD REACH AROUND 25 KT. A SURFACE TROUGH WILL PASS W THROUGH THE WINDWARD ISLANDS THIS AFTERNOON ACCOMPANIED BY ISOLATED SHOWERS AND TSTMS...AND MODERATE WINDS. SW N ATLC S OF 31N AND W OF 65W... A RIDGE EXTENDING FROM NEAR BERMUDA TO CENTRAL BAHAMAS WILL CONTINUE TO RETRACT EASTWARD THIS AFTERNOON AS COLD FRONT MOVES ACROSS THE NW WATERS. THE FRONT ENTERED THE FAR NW PORTION OF THE AREA THIS MORNING. WINDS OF 10 TO 15 KT ARE EXPECTED EITHER SIDE OF THE FRONT THIS AFTERNOON AND TONIGHT. HOWEVER...A SECONDARY N SURGE WILL RESULT IN AN INCREASE IN WINDS AND SEAS ACROSS THE AREA LATE THU INTO FRI. ACCORDING TO THE MARINE GUIDANCE...EXPECT WINDS OF 20 TO 25 KT AND BUILDING SEAS UP TO 10 FT E OF THE BAHAMAS FRI. A BELT OF FRESH TO STRONG WINDS WILL PERSIST S OF 27N SAT AND SUN. WARNINGS... ATLC... .NONE. CARIBBEAN... .NONE. GULF OF MEXICO... .NONE. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ FORECASTER NELSON