000 FZNT25 KNHC 181518 OFFN04 NAVTEX MARINE FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL ISSUED BY NWS OCEAN PREDICTION CENTER WASHINGTON DC 1118 AM EDT TUE AUG 18 2015 ...PLEASE REFER TO COASTAL WATERS FORECASTS (CWF) AVAILABLE THROUGH NOAA WEATHER RADIO AND OTHER MEANS FOR DETAILED COASTAL WATERS FORECASTS... SOUTHEAST GULF OF MEXICO .SYNOPSIS...A HIGH PRESSURE RIDGE BUILDING FROM THE W ATLC ACROSS THE N GULF WILL PREVAIL TODAY THROUGH FRI. A THERMAL TROUGH WILL DEVELOP EACH EVENING OVER THE YUCATAN. THE TROUGH WILL DRIFT W INTO THE SW GULF EACH NIGHT AND DISSIPATE EACH MORNING OVER THE SW GULF. .THIS AFTERNOON...E WINDS 10 TO 15 KT. SEAS 2 FT OR LESS. .TONIGHT...E WINDS 5 TO 10 KT...INCREASING TO 10 TO 15 KT AFTER MIDNIGHT. SEAS 2 FT OR LESS. .WED...SE WINDS 10 TO 15 KT. SEAS 2 FT OR LESS. .WED NIGHT...SE WINDS 5 TO 10 KT. SEAS 2 FT OR LESS. .THU...SE WINDS 5 TO 10 KT. SEAS 2 FT OR LESS. .THU NIGHT...E WINDS 5 TO 10 KT. SEAS 2 FT OR LESS. .FRI...E WINDS 5 TO 10 KT. SEAS 2 FT OR LESS. .FRI NIGHT...NE WINDS 5 TO 10 KT. SEAS 2 FT OR LESS. .SAT...NE WINDS 5 TO 10 KT. SEAS 2 FT OR LESS. .SAT NIGHT...NE WINDS 5 TO 10 KT. SEAS 2 FT OR LESS. WITHIN 200 NM EAST OF THE COAST OF FLORIDA .SYNOPSIS...A SURFACE TROUGH ACROSS THE SE BAHAMAS ALONG 76W WILL MOVE W ACROSS THE BAHAMAS TODAY AND ACROSS THE STRAITS OF FLORIDA TONIGHT. HIGH PRES BUILDING OVER THE N WATERS WILL ESTABLISH A RIDGE ALONG 30N TODAY THEN DRIFT S TO ALONG 27N WED THROUGH THU AS AN AREA OF LOW PRES FORMS N OF BERMUDA AND SHIFTS SE AND INTO THE NE WATERS THU INTO FRI. THE RIDGE IS EXPECTED TO CONTINUE FRI NIGHT INTO SAT NIGHT WHILE WEAKENING. .THIS AFTERNOON...E WINDS 10 TO 15 KT S OF 27N...AND SE 5 TO 10 KT N OF 27N. SEAS 2 FT OR LESS S OF 27N...AND 2 TO 4 FT N OF 27N. SCATTERED SHOWERS. .TONIGHT...SE WINDS 10 TO 15 KT. SEAS 2 FT OR LESS S OF 27N...AND 2 TO 4 FT N OF 27N. .WED...S OF 27N...E WINDS 10 TO 15 KT. N OF 27N...S WINDS 10 TO 15 KT...DIMINISHING TO 5 TO 10 KT IN THE AFTERNOON. SEAS 2 FT OR LESS S OF 27N...AND 2 TO 4 FT N OF 27N. .WED NIGHT...E WINDS 10 TO 15 KT S OF 27N...AND S 5 TO 10 KT N OF 27N. SEAS 2 FT OR LESS. .THU...SE WINDS 10 TO 15 KT. SEAS 2 FT OR LESS. .THU NIGHT...E WINDS 5 TO 10 KT. SEAS 2 FT OR LESS. .FRI...N WINDS 5 TO 10 KT. SEAS 2 FT OR LESS. .FRI NIGHT...N WINDS 5 TO 10 KT. SEAS 2 FT OR LESS. .SAT...N WINDS 5 TO 10 KT. SEAS 2 FT OR LESS. .SAT NIGHT...N WINDS 5 TO 10 KT. SEAS 2 FT OR LESS.