000 AGXX40 KNHC 251825 MIMATS MARINE WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 245 PM EDT WED JUL 25 2012 MARINE WEATHER DISCUSSION FOR THE GULF OF MEXICO...CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W. GULF OF MEXICO... A SURFACE TROUGH EXTENDING FROM N FLORIDA TO NEAR 28N85W IS PRODUCING SOME TSTMS ACTIVITY OVER THE FAR NE PART OF THE GULF WATERS. WINDS AND SEAS WILL BE HIGHER NEAR THE TSTMS. THIS TROUGH IS FORECAST TO DISSIPATE TONIGHT AS HIGH PRES BUILDS ACROSS THE AREA. A 1020 MB HIGH PRES IS LOCATED NEAR 27N89W. THIS FEATURE WILL MOVE EWD TOWARD THE WEST COAST OF FLORIDA THROUGH SAT. AS THE HIGH PRES MOVES E...EXPECT SLY RETURN FLOW TO INCREASE TO 15-20 KT ACROSS THE W CENTRAL WATERS THROUGH THU NIGHT. ENHANCEMENT OF NE WINDS TO 15-20 KT ALONG NW YUCATAN PENINSULA WILL PREVAIL THROUGH SAT NIGHT. SW N ATLC S OF 31N W OF 65W... SUBTROPICAL RIDGE EXTENDING ALONG 26N TO CENTRAL FL WILL SHIFT S ALONG 25N TO SOUTH FL WITH LITTLE CHANGE THROUGH FRI. THE RIDGE SHIFTS N AGAIN ON FRI NIGHT REACHING ALONG 28N55W TO 27N80W. AS THE RIDGE SHIFTS S THE REST OF TODAY A COLD FRONT PASSES THROUGH OFFSHORE ZONES AMZ113 AND AMZ115 WITH SW-W WINDS INCREASING 20-25 KT AND SEAS BUILDING TO AROUND 9 FT. THE MOST RECENT SCATTEROMETER PASSES SHOWED WINDS OF 20 TO 25 KT ACROSS THE N WATERS N OF 28N BETWEEN 54W AND 74W. THESE WINDS WILL PERSIST ACROSS THE AFOREMENTIONED OFFSHORE ZONES THROUGH THU. MODERATE TO FRESH TRADE WINDS WILL CONTINUE ACROSS WATERS S OF 23N THROUGH THE FORECAST PERIOD. CARIBBEAN SEA AND TROPICAL N ATLC W OF 55W... HIGH PRES RIDGE N OF THE AREA WILL MAINTAIN FRESH TO STRONG NE-E WINDS ACROSS THE BASIN OVER THE NEXT COUPLE OF DAYS. EXPECT INCREASING WINDS TO 30 KT NEAR THE COAST OF COLOMBIA THU AND FRI WITH BUILDING SEAS OF 10-13 FT ACROSS THE SOUTH-CENTRAL CARIBBEAN. THE AREA OF FRESH WINDS WILL EXPAND WWD REACHING THE ATLC COAST OF NICARAGUA BY FRI. A TROPICAL WAVE IS OVER THE CENTRAL CARIBBEAN EXTENDING FROM 20N75W TO 12N78W. THE WAVE WILL MOVE ACROSS THE WESTERN CARIBBEAN ON THU REACHING THE YUCATAN PENINSULA FRI. A SECOND TROPICAL WAVE...WITH A WELL DEFINED INVERTED V PATTERN ON SATELLITE IMAGERY...WILL MOVE INTO THE TROPICAL ATLC WATERS ON FRI AND INTO THE EASTERN CARIBBEAN SAT. ANOTHER TROPICAL WAVE HAS MOVED OUT OF AFRICA WITH A WEAK 1012 MB LOW PRES ALONG THE WAVE AXIS NEAR 14N20W. THIS WAVE CURRENTLY WELL E OF THE FORECAST AREA WILL REACH ALONG 35W FRI...ALONG 40W SAT...AND ALONG 45W. THE GFS GLOBAL MODEL SUGGESTS THAT THE LOW PRES WILL MOVE IN TANDEM WITH THE TROPICAL WAVE. NOTE...GRIDDED MARINE FORECAST IS AVAILABLE AT WWW.NHC.NOAA.GOV/TAFB/GRIDDED_MARINE GULF OF MEXICO... .NONE. CARIBBEAN SEA... .NONE. SW N ATLANTIC... .NONE. FOR ADDITIONAL INFORMATION PLEASE VISIT WWW.HURRICANES.GOV/MARINE $$ FORECASTER GR