000 AGXX40 KNHC 270736 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 340 AM EDT WED AUG 26 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 TROUGH OF LOW PRES EXTENDS FROM THE NE GULF TO THE WESTERN TIP OF THE BAJA PENINSULA WITH AREAS OF SHOWERS AND TSTMS NEAR THIS BOUNDARY...MOSTLY OVER THE NE GULF. THE TROUGH WEAKENS THROUGH FRIDAY AS HIGH PRES BUILDS OVER THE NORTHERN GULF INTO EARLY NEXT WEEK. A COLD FRONT WILL APPROACH THE NW GULF COAST SAT NIGHT...SLOWLY MOVE E TO THE FL BIG BEND BY MON MORNING AND DISSIPATE OVER THE NORTHERN GULF COAST TUE. THE FRONT SHOULD BRIEFLY MOVE INTO N GULF WATERS SUN AND MON...WITH WINDS REMAINING BELOW 20 KT. THE GFS...CAN...UKMET AND NOGAPS SOLUTIONS ARE FARTHER SOUTH WITH THE COLD FRONT INTO GULF WATERS THAN THE ECMWF...AND THEIR MORE SOUTHERLY CONSENSUS WAS USED FOR THE FORECAST. ELSEWHERE...LIGHT TO MODERATE WINDS AND SEAS WILL PREVAIL THROUGH THIS PERIOD. CARIBBEAN... A TROPICAL WAVE ALONG 76W WILL MOVE THROUGH THE CARIBBEAN BASIN...REACHING THE NICARAGUAN COAST BY LATE TODAY. 2258 UTC QUIKSCAT PASS SHOWS A WELL DEFINED WIND SHIFT OVER THE N CENTRAL CARIBBEAN WITH THE WAVE AND A BROAD AREA OF 20 KT WINDS BEHIND THE WAVE OVER THE SOUTH-CENTRAL AND SOUTHEASTERN CARIBBEAN. THIS SWATH OF WINDS IS EXPECTED TO FOLLOW THE WAVE THROUGH THE SW CARIBBEAN INTO SATURDAY. SEAS OF 8 TO 12 FT CAN BE EXPECTED THROUGH SAT MAINLY ALONG THE COLOMBIAN COAST WHERE WINDS WILL REACH 25 KT IN THE WAVE OF THE AFOREMENTIONED TROPICAL WAVE. WINDS WILL DIMINISH OVER THE CENTRAL CARIBBEAN INTO THE WEEKEND...THEN INCREASE SLIGHTLY SUNDAY INTO TUESDAY AS A RIDGE OF HIGH PRES BUILDS N OF THE AREA AHEAD OF THE TROPICAL WAVE CURRENTLY ALONG 45W AS IT MOVES INTO THE EASTERN CARIBBEAN EARLY NEXT WEEK. SW N ATLC S OF 31N AND W OF 55W... TROPICAL STORM DANNY IS ALREADY N OF 27N AND MOVING TO THE NW AT 9 KT THROUGH THE SW N ATLC ZONE. ASCAT PASS FROM 0136 UTC INDICATES THE STRONGEST WINDS ARE ON THE NE SIDE OF DANNY...BETWEEN THE STORM CENTER AND HIGH PRES OVER THE WESTERN ATLC. DANNY PASSED NEAR BUOY 41047 WHICH REPORTED WINDS AROUND 35 KT FROM 0200 UTC TO 0600 UTC. WINDS ARE FORECAST TO INCREASE ON THE SOUTHERN HALF THE STORM TODAY AS IT MOVES THROUGH THE N PORTION OF THE ZONE. BUOY 41047 IS ALSO REPORTING SEAS TO 17 FT AND SEAS HAVE INCREASED IN THE SW QUADRANT AS THE SYSTEM COMPLETES ITS TURN TOWARD THE NORTH. MOST OF THE SHOWERS AND THUNDERSTORM ACTIVITY IS NOTED ON THE E SIDE OF THE STORM. SEE LATEST NHC FORECAST/ADVISORY UNDER AWIPS/WMO HEADERS MIATCMAT5/ WTPZ25 KNHC FOR MORE DETAILS ON DANNY. FOR THE TROPICAL ATLC...MODERATE TRADES PERSIST MAINLY N OF 15N. A TROPICAL WAVE W OF THE AREA WILL PASS 55W AND APPROACH THE LESSER ANTILLES FRI INTO SAT...ALTHOUGH NO SIGNIFICANT IMPACT ON WINDS...SEAS...OR CONVECTION IS ANTICIPATED. WARNINGS ATLC... .AMZ080...TROPICAL STORM WARNING N OF 25N E OF 77W... CARIBBEAN... .NONE. GULF OF MEXICO... .NONE $$ FORECASTER CHRISTENSEN/SCHAUER CLARK