000 AGXX40 KNHC 051836 MIMATS MARINE WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 240 PM EDT SUN JUN 05 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... WEAK HIGH PRES CONTINUES TO PREVAIL OVER THE GULF OF MEXICO WITH LIGHT WINDS AND A LOW SEA STATE ACROSS THE AREA. A LOCALLY TIGHT PRESSURE GRADIENT BETWEEN THE HIGH PRESSURE AND BROAD LOW PRESSURE OVER THE WESTERN CARIBBEAN IS RESULTING IN NE-E WINDS OF 20-25 KT. THESE WINDS ARE FORECAST TO DIMINISH TONIGHT AS THE GRADIENT WEAKENS. CARIBBEAN SEA AND TROPICAL N ATLC W OF 55W... A BROAD AREA OF LOW PRES OVER THE WESTERN CARIBBEAN CONTINUES TO BE THE MAIN FEATURE OF INTEREST FOR THE CARIBBEAN SEA. THE LOW IS CURRENTLY CENTERED NEAR 17N80W WITH A SURFACE PRESSURE OF 1007 MB. SO FAR...THE MAIN CONCERN CONTINUES TO BE AMPLE MOISTURE OVER WHICH IS PRODUCING SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS OVER THE CENTRAL CARIBBEAN. THERE IS CURRENTLY A MEDIUM CHANCE OF THIS LOW DEVELOPING INTO A TROPICAL CYCLONE IN THE NEXT 48 HOURS. A TROPICAL WAVE ENTERING THE TROPICAL N ATLC WATERS WILL SHIFT NW IN THE MEAN SOUTHEASTERLY STEERING FLOW AND WILL MERGE INTO BROAD TROUGHING IN THE ATLANTIC WATERS N OF THE LESSER ANTILLES. SW N ATLC... THE PRESSURE GRADIENT BETWEEN HIGH PRESSURE OVER THE NW WATERS AND LOW PRESSURE OVER THE WESTERN CARIBBEAN IS MAINTAINING 20 TO 25 KT NE TO E WINDS OVER THE SW PART OF THE AREA. THE HIGH WILL SHIFT EASTWARD THROUGH TUE AS LOW PRES MOVES OFF THE MID-ATLANTIC COAST. THE LOW SHOULD REACH NEAR 31N74W AS 1012 MB BY MON EVENING...AND DISSIPATE ON TUE. HIGH PRESSURE WILL THEN BUILD ACROSS THE N PART OF THE AREA AGAIN WHERE IT WILL PREVAIL THE THE REMAINDER OF THE FORECAST PERIOD. A LOW PRESSURE TROUGH WILL PREVAIL OVER THE FAR SE PART OF THE AREA THROUGH THE FORECAST PERIOD...WITH THE CHANCE FOR A LOW PRESSURE CIRCULATION TO FORM ALONG THE TROUGH WEDNESDAY. WARNINGS... ATLC... .NONE. CARIBBEAN... .NONE. GULF OF MEXICO... .NONE. FOR ADDITIONAL INFORMATION PLEASE VISIT HTTP://WWW.HURRICANES.GOV/MARINE $$ FORECASTER AL