000 FZNT26 KNHC 181528 OFFN05 NAVTEX MARINE FORECAST NWS NATIONAL HURRICANE CENTER MIAMI FL 1128 AM EDT THU APR 18 2013 ...PLEASE REFER TO COASTAL WATERS FORECASTS (CWF) AVAILABLE THROUGH NOAA WEATHER RADIO AND OTHER MEANS FOR DETAILED COASTAL WATERS FORECASTS... .SYNOPSIS...STRONG HIGH PRESSURE WILL ENTER THE NORTHWEST ATLANTIC TODAY AND REINFORCE THE LOCAL PRESSURE GRADIENT THROUGH THE END OF THE WEEK. A PULSE OF NORTHEAST SWELL WILL SPREAD ACROSS THE LOCAL ATLANTIC WATERS TODAY AND CONTINUE INTO SATURDAY. THIS COMBINED WITH INCREASING EASTERLY TRADE WINDS WILL CREATE ROUGH AND HAZARDOUS SEAS. WEATHER CONDITIONS WILL DETERIORATE FRIDAY AND SATURDAY WITH INCREASING THUNDERSTORMS..PRODUCING HEAVY RAIN AND GUSTY WINDS. SAN JUAN ATLANTIC WATERS .THIS AFTERNOON...E WINDS 15 TO 20 KT. SEAS 7 TO 8 FT. SCATTERED SHOWERS. .TONIGHT...E WINDS 15 TO 20 KT. SEAS 7 TO 8 FT...BUILDING TO 8 TO 9 FT AFTER MIDNIGHT. .FRI...E WINDS 15 TO 20 KT. SEAS 8 TO 9 FT. .FRI NIGHT...E WINDS 15 TO 20 KT. SEAS 8 TO 9 FT. .SAT...E WINDS 15 TO 20 KT. SEAS 7 TO 9 FT. .SUN...E WINDS 15 TO 20 KT. SEAS 7 TO 8 FT. .MON...E WINDS 15 TO 20 KT. SEAS 6 TO 7 FT. SAN JUAN CARIBBEAN WATERS .THIS AFTERNOON...E WINDS 15 TO 20 KT. SEAS 4 TO 6 FT...BUILDING TO 5 TO 7 FT IN THE AFTERNOON. SCATTERED SHOWERS. .TONIGHT...E WINDS 15 TO 20 KT. SEAS 5 TO 7 FT. .FRI...E WINDS 15 TO 20 KT. SEAS 6 TO 8 FT. .FRI NIGHT...E WINDS 15 TO 20 KT. SEAS 6 TO 8 FT. .SAT...E WINDS 15 TO 20 KT. SEAS 5 TO 7 FT. .SUN...E WINDS 15 TO 20 KT. SEAS 5 TO 7 FT. .MON...NE WINDS 15 TO 20 KT. SEAS 5 TO 7 FT.