000 AGXX40 KNHC 090619 MIMATS MARINE WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 230 AM EDT SUN OCT 09 2011 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... TIGHT PRES GRADIENT BETWEEN THE STRONG ATLC HIGH TO THE E AND LOWER PRES OVER THE FLORIDA STRAITS IS GALE FORCE WIND OVER THE NE GULF N OF 27N E OF 90W. LOW PRES IS EXPECTED TO FORM IN THE FAR SW N ATLC...OR FAR SE GULF OF MEXICO WITHIN LATER TODAY. THIS LOW IS THEN FORECAST TO MOVE NORTHWARD INTO THE NE GULF BY THE EARLY THIS WEEK AS HIGH PRESSURE WEAKENS TO THE N THEN THE LOW WILL MOVE NE BY WED. WINDS DECREASE AS THE PRES GRADIENT WEAKENS TUE-THU. SW N ATLC S OF 31N W OF 65W... BROAD LOW LEVEL TROUGH OF LOW PRES IS INTERACTING WITH AN UPPER LEVEL TROUGH TO CREATE ACTIVE WEATHER OVER THE WESTERN PART OF THE AREA. WITH STRONG HIGH PRESSURE N OF THE AREA AND BROAD TROUGHING OVER THE WESTERN CARIBBEAN IS MAINTAINING A TIGHT PRESSURE GRADIENT. GALE FORCE WINDS ARE N OF 27N W OF 75W AND ARE FORECAST TO DECREASE TO BELOW GALE FORCE ON MON. THE AREA OF HIGH PRES WILL WEAKEN AND SHIFT NORTHWARD LATE MON WITH WINDS DECREASING THROUGH THE WEEK. CARIBBEAN SEA AND TROPICAL N ATLC... WEAK PRES PATTERN WILL CONTINUE OVER MUCH OF THE AREA THROUGH THE FORECAST PERIOD. A SMALL AREA OF 20 KT TRADES OVER THE MIDDLE CARIBBEAN DECREASE AS THE PRESSURE GRADIENT BETWEEN STRONG HIGH PRESSURE N OF THE SW N ATLC ZONE AND LOWER PRES OVER S AMERICA. THESE WINDS WILL DIMINISH BELOW 20 KT BY TUE. WARNINGS... GULF OF MEXICO... .GALE WARNING N OF 27N E OF 90W...GMZ084 AND GMZ086 CARIBBEAN SEA... .NONE. TROPICAL N ATLC... .NONE. SW N ATLC... .AMZ080...GALE WARNING N OF 27N W OF 75W... FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ FORECASTER DGS