000 AGXX40 KNHC 121751 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 200 PM EDT SAT JUN 12 2010 MARINE WEATHER DISCUSSION FOR GULF OF MEXICO...CARIBBEAN SEA AND TROPICAL N ATLC FROM 07N TO 22N BETWEEN 55W AND 65W...AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W GULF OF MEXICO... HIGH PRES CENTERED OVER SW GA HAS A RIDGE EXTENDING W ALONG 30-31N. SE RETURN FLOW OF 15-20 KT CONTINUES ALONG THE SW PERIPHERY OF THE RIDGE IN THE SW AND NW GULF ZONES. THE HIGH CENTER IS EXPECTED TO SHIFT SLOWLY W REACHING A POSITION OVER SOUTHERN LOUISIANA SUN NIGHT-MON. THIS WILL ALLOW FOR A WEAK TROUGH TO STALL OVER THE FAR NE GULF WATERS AND SEPARATE THE GULF RIDGE FROM THE ATLC RIDGE...WITH THE TROUGH DISSIPATING MON NIGHT. THE ATLC RIDGE BUILDS W ACROSS THE GULF ALONG 29-30N TUE THROUGH THU WITH WINDS DIMINISHING TO 10-15 KT OVER THE S GULF...AND GENERALLY VARIABLE 5-10 KT OVER THE N CENTRAL AND NE WATERS. CARIBBEAN SEA AND TROPICAL N ATLC... A TROPICAL WAVE S OF 15N ALONG 75W-76W IS MOVING W AROUND 13 KT AND THIS MOTION SHOULD ALLOW WAVE TO REACH 80W SUN...85W MON WITH ITS N SEGMENT MOVING W THROUGH THE GULF OF HONDURAS MON NIGHT. EASTERLY TRADES CONTINUE TO BE ENHANCED TO 15-20 KT IN THE CENTRAL CARIBBEAN NEAR THE WAVE AND EXPECT THESE WINDS TO SHIFT W WITH THE WAVE MOTION...WITH 15-20 KT PERSISTING THROUGH WED NIGHT LONG AFTER THE WAVE MOVES W OF THE AREA AS AN ATLC RIDGE CONTINUES E TO W ALONG 27N. ANOTHER WAVE OR TROUGH IS S OF 10N ALONG 56W AND WILL MOVE W AND INLAND S AMERICA LATE TONIGHT. A THIRD WAVE IS S OF 13N ALONG 38W AND ITS PAST 24 HOUR MOTION SHOULD MOVE ITS AXIS TO ALONG 55W THU. SW N ATLC... A FRONTAL TROUGH EXTENDING FROM 31N55W TO 29N61W TO 31N69W WILL GRADUALLY DISSIPATE AS A RIDGE TO ITS N SHIFTS S TO ALONG 29N SUN NIGHT...ALONG 27N MON NIGHT...AND 26N TUE NIGHT THROUGH THU. S-SW FLOW WILL INCREASE OVER THE FAR NW WATERS SUN NIGHT THROUGH MON IN ADVANCE OF A COLD FRONT WHICH WILL MOVE OFF THE GEORGIA COAST MON NIGHT. LATEST MODEL GUIDANCE SUGGEST THAT SOUTHERN EXTENT OF FRONT WILL BE ABOUT 31N WITH THE FRONT PASSING THROUGH THE BERMUDA WED. WARNINGS... ATLC... .NONE. CARIBBEAN... .NONE. GULF OF MEXICO... .NONE. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ FORECASTER NELSON