000 AGXX40 KNHC 280543 MIMATS MARINE WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 143 AM EDT MON JUL 28 2008 MARINE WEATHER DISCUSSION FOR GULF OF MEXICO...CARIBBEAN SEA AND SOUTHWEST NORTH ATLC S OF 31N W OF 55W. SW N ATLC... TODAY THROUGH TUE NIGHT...LONGWAVE TROUGH ALONG THE U.S. EAST COAST CONTINUES TO SEVER THE MID-LEVEL SUBTROPICAL RIDGE AXIS OVER THE W ATLC WATERS...KEEPING TWO DISTINCT PARTS OVER THE CNTRL ATLC AND ALONG THE U.S./MEXICO BORDER. RESULT HAS BEEN SFC RIDGE BEING PUSHED SWD FROM 31N65W TO SOUTH FLORIDA...WITH LIGHT WINDS ACROSS MUCH OF THE REGION EXCEPT 10-15 KT AROUND THE PERIPHERY OF THE AXIS. RIDGE MOVES VERY LITTLE THROUGH TUE NIGHT ALTHOUGH SHARPENS A BIT BY TUE AS MORE PRONOUNCED WLYS DEVELOP N OF 27N AND ELYS S OF 25N. WED THROUGH FRI...RIDGE REMAINS SUPPRESSED S FROM 25N65W TO THE STRAITS OF FLORIDA ON WED AND MOVES EVERY SO SLIGHTLY FARTHER N THU AND FRI. WITH LITTLE CHANGE TO THE PATTERN EXPECTED...WINDS WILL REMAIN LIGHT EXCEPT OCCASIONALLY BECOME SW 10-15 KT OVER THE NRN WATERS AS DISTURBANCES PASS BY TO THE N. BY FRI...N END OF A TRPCL WAVE MAY MOVE INTO THE SE WATERS AND INCREASE ELYS TO 15-20 KT WITH BUILDING SEAS N OF PUERTO RICO. CARIBBEAN... TODAY THROUGH TUE NIGHT...QSCAT MISSED THE ZONE OF HIGHEST WINDS OVER THE S/CNTRL CARIBBEAN THIS EVENING...ALTHOUGH NOAA BUOY 42058 IS REPORTING WINDS NEAR 20 KT IN LINE WITH MODEL GUIDANCE. 20-25 KT WINDS CURRENTLY LIE S OF 15N BETWEEN 70W-75W AND WILL BEGIN TO EXPAND FARTHER W TO 80W THROUGH TUE/TUE NIGHT AS THE ATLC RIDGE BUILDS W INTO THE SE GULF OF MEXICO. ELSEWHERE...S END OF A TRPCL WAVE IS MOVING INTO THE TRPCL N ATLC WATERS BUT HAS LOST MOST OF ITS ENERGY AND WILL EFFECT THE WIND FIELD VERY LITTLE. SECOND STRONGER WAVE NEAR 38W WILL APPROACH THE TRPCL ATLC WATERS WITH WINDS INCREASING TO 15-20 KT N OF 15N TUE NIGHT AHEAD OF THE AXIS. WED THROUGH FRI...TRPCL WAVE ENTERS TRPCL ATLC WATERS ON WED WITH ZONE OF 15-20 KT WINDS CONTINUING N OF 16N THROUGH FRI WITH A MORE SELY COMPONENT AS THE WAVE PASSES. OVER THE S/CNTRL CARIBBEAN...20-25 KT WIND SWATH BEGINS TO SHRINK WITH WEAKENING OF THE ATLC RIDGE. WINDS DIMINISH TO 15-20 KT THU THEN 10-15 KT FRI WITH AN OCCASIONAL 20 KT NEAR THE COAST. GULF OF MEXICO... TODAY THROUGH TUE NIGHT...SFC RIDGE AXIS FROM SOUTH FLORIDA WWD ALONG 24N/25N IS PRODUCING LIGHT 5-10 KT FLOW ACROSS MOST OF THE REGION...EXCEPT SLY 10-15 KT ALONG THE TEXAS COAST. MOST MODELS ARE HINTING AT THE DEVELOPMENT OF A WEAK LOW/SFC TROUGH OFF THE MISSISSIPPI DELTA TODAY BUT ALL THIS WILL REALLY DO IS SHARPEN THE WIND FIELD. THE TROUGH DRIFTS W TONIGHT AND TUE AS THE ATLC RIDGE BUILDS W. WINDS REMAIN LIGHT THROUGH THE PERIOD AND MAY INCREASE TO 10-15 KT OVER PARTS OF THE WRN GULF ESPECIALLY AT NIGHT. WED THROUGH FRI...RIDGE STARTS OUT ALONG 24N WED AND ONLY DRIFTS SLIGHTLY N TO 25N THROUGH FRI. THIS KEEPS THE FLOW OVER THE NRN WATERS SW/WLY AS HIGH AS 15 KT OVER THE NE PART...AND E/SELY OVER THE SRN WATERS AS HIGH AS 15 KT OVER THE SW PART. WARNINGS... ATLANTIC... NONE. CARIBBEAN... NONE. GULF OF MEXICO... NONE. .FORECASTER BERG. TROPICAL PREDICTION CENTER.