000 AGXX40 KNHC 041840 MIMATS MARINE WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 200 PM EDT THU AUG 04 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... HIGH PRES IS CENTERED OVER THE MIDDLE GULF NEAR 25N88W WITH A RIDGE AXIS EXTENDING SW TO THE MEXICAN COAST NEAR 20N97W AND E-NE INTO THE SW NORTH ATLC NEAR 28N72W. SHIP AND BUOY DATA INDICATE CALM TO LIGHT WINDS WITH SEAS IN THE RANGE OF 1 TO 2 FT OVER MUCH OF THE GULF. SEAS TO 3 FT OVER THE EXTREME WESTERN GULF AND NW OF THE YUCATAN PENINSULA ARE POSSIBLE. THE HIGH PRES RIDGE IS FORECAST TO REMAIN IN PLACE ACROSS THE GULF DURING THE WEEKEND WITH RELATIVELY LIGHT WINDS AND CALM SEAS EXPECTED. SW NORTH ATLC... WEAK SURFACE RIDGE WILL SHIFT NORTHWARD TO ALONG 30N BY FRI. TROPICAL STORM EMILY IS EXPECTED TO TRACK ACROSS THE WINDWARD PASSAGE REGION THU EVENING INTO FRI MORNING AND ENTERS THE SW NORTH ATLC WATERS NEAR 21.0N 75.5W EARLY FRI THEN TO 25.0N 78.5W SAT MORNING THEN TO 29.0N 77.5W SUN MORNING WHERE WINDS ARE FORECAST TO INCREASE TO 60 KT WITH GUSTS TO 75 KT. AFTER EMILY MOVES NORTH OF THE DISCUSSION AREA BY EARLY MONDAY...THE SURFACE RIDGE IS EXPECTED TO RE-ESTABLISH ITSELF OVER THE ATLC WATERS ALONG 25N. CARIBBEAN SEA AND TROPICAL N ATLC W OF 55W... THE MAIN FEATURE OVER THE AREA REMAINS TROPICAL STORM EMILY. AT 1800 UTC EMILY WAS LOCATED NEAR 17.8N 72.8W MOVING WNW OR 290 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS ARE 35 KT WITH GUSTS TO 45 KT. MINIMUM PRES WAS 1006 MB. EMILY IS FORECAST TO TRACK W-NW INLAND ACROSS SOUTHWESTERN PORTIONS OF HAITI THIS EVENING INTO THE OVERNIGHT HOURS AND EMERGE INTO THE SW NORTH ATLC WATERS NEAR 21.0N 75.5W FRI MORNING. THE STRONGEST WINDS AND HIGHEST SEAS REMAIN OVER THE NE SEMICIRCLE...ALTHOUGH SEAS REMAIN LIMITED IN FETCH AS EMILY INTERACTS WITH THE HIGHER TERRAIN OF HISPANIOLA AND WESTERN CUBA. ELSEWHERE MODERATE TO FRESH TRADEWINDS PREVAIL ACROSS THE REMAINDER OF THE AREA. AFTER EMILY SHIFTS N OF THE FORECAST AREA...HIGH PRES IS EXPECTED TO BUILD OVER THE SW NORTH ATLC AND ALLOW FOR FRESH TO STRONG TRADES TO PREVAIL OVER THE CENTRAL CARIBBEAN THROUGH THE REMAINDER OF THE FORECAST PERIOD WITH SEAS REACHING 10 FT IN E SWELL. WARNINGS... GULF OF MEXICO... .NONE. SW NORTH ATLC... .AMZ080...TROPICAL STORM WARNING BETWEEN 74W AND 79W. CARIBBEAN AND TROPICAL N ATLC... .AMZ086...TROPICAL STORM WARNING N OF 16N W OF 71W. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ FORECASTER HUFFMAN