000 AGXX40 KNHC 280726 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 330 AM EDT FRI AUG 28 2009 MARINE WEATHER DISCUSSION FOR THE GULF OF MEXICO...CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W. GULF OF MEXICO... A LOW PRES TROUGH EXTENDS FROM 30N86W S TO THE YUCATAN PENINSULA NEAR 20N89W. AREAS OF SHOWERS AND TSTMS ARE ASSOCIATED WITH THIS BOUNDARY...MAINLY OVER THE NE GULF. THE TROUGH WILL WEAKEN TODAY AS HIGH PRES BUILDS OVER THE N GULF. A COLD FRONT WILL APPROACH THE FAR NW GULF LATE SAT NIGHT...THEN SLOWLY MOVE E TO NEAR THE FL BIG BEND BY MON. THE FRONT IS EXPECTED TO DIMINISH TUE OVER THE N GULF. WINDS SHOULD REMAIN BELOW 20 KT OVER THE N GULF ASSOCIATED WITH THIS FRONT. ELSEWHERE...LIGHT AND VARIABLE WINDS WILL PREVAIL THROUGH THE PERIOD. CARIBBEAN... A TROPICAL WAVE ALONG 82W WILL REACH CENTRAL AMERICA LATER TODAY. ASCAT PASS AROUND 0252 UTC SHOWED A BROAD AREA OF 20-25 KT WINDS BEHIND THE WAVE OVER THE CENTRAL CARIBBEAN FROM 11N-16N. A SECOND TROPICAL WAVE WILL MOVE INTO THE E CARIBBEAN SAT. WINDS WILL REMAIN 20-25 KT AND SEAS WILL BUILD TO 8 TO 12 FT THROUGH SAT...THEN DIMINISH SAT NIGHT AND SUN BEFORE REBUILDING BEHIND THIS SECOND WAVE SUN NIGHT THROUGH MON. SW N ATLC S OF 31N AND W OF 55W... TROPICAL STORM DANNY WAS LOCATED NEAR 28.4N 73.5W AT 03 UTC AND IS MOVING TO THE N-NW AROUND 7 KT. ASCAT PASS AROUND 0114 UTC SHOWED THE WINDS OVER 20 KT EXTENDING AS MUCH AS 390 NM AWAY FROM THE CENTER IN THE E SEMICIRCLE. A TIGHT PRES GRADIENT BETWEEN DANNY AND HIGH PRES OVER THE W ATLC IS ALLOWING THE STRONGEST WINDS TO REMAIN ON ITS E SIDE. DANNY IS FORECAST TO STRENGTHEN TO HURRICANE STATUS WELL NORTH OF THE FORECAST AREA ON SAT NIGHT. AT 0600 UTC BUOYS 41010 AND 41047 WERE REPORTING SEAS TO 10 FT. MOST OF THE SHOWER AND TSTM ACTIVITY IS FOCUSED ON THE E AND SE SIDES OF THE STORM. SEE LATEST NHC FORECAST/ADVISORY UNDER AWIPS/WMO HEADERS MIATCMAT5/WTPZ25 KNHC FOR MORE DETAILS ON DANNY. FOR THE TROPICAL ATLC...WEAK TRADES PERSIST. A TROPICAL WAVE ALONG 52W SHOULD PASS THROUGH THE ZONE TODAY WITH LITTLE FANFARE. WARNINGS ATLC... .AMZ080...TROPICAL STORM WARNING N OF 26N BETWEEN 69W AND 77W... CARIBBEAN... .NONE. GULF OF MEXICO... .NONE $$ FORECASTER SCHAUER CLARK