


Offshore Forecast
Issued by NWS
Issued by NWS
876 FZNT26 KNHC 190339 OFFN05 NAVTEX Marine Forecast NWS National Hurricane Center Miami, FL 1139 PM EDT Mon Aug 18 2025 ...Please refer to Coastal Waters Forecasts (CWF) available through NOAA Weather Radio and other means for detailed Coastal Waters Forecasts... .SYNOPSIS...Hurricane Erin is centered E of the central Bahamas near 24.4N 71.7W at 11 PM EDT, and is moving northwest at 7 kt. Maximum sustained winds are 110 kt with gusts to 135 kt, and the minimum central pressure is 949 mb. Erin will continue to move away of the San Juan Atlantic Waters to 25.4N 72.3W Tue morning, 27.1N 73.2W Tue evening, and near 29.2N 73.7W Wed morning. Scattered to isolated showers associated with Erin will move away of the region by Tue evening. Moderate to fresh SE to S winds across the regional waters will diminish to gentle to moderate speeds Tue morning and then become easterly Wed. Otherwise, a tropical wave located over the central tropical Atlantic is producing some disorganized showers and thunderstorms. Environmental conditions appear conducive for gradual development of this system, and a tropical depression could form toward the end of the week as the system approaches the offshore waters of Puerto Rico. Rough seas are anticipated with the passage of this system over the weekend. San Juan Atlantic Waters .OVERNIGHT...SE to S winds 20 to 25 kt. Seas 7 to 10 ft in W to NW swell. .TUE...SE to S winds 15 to 20 kt. Seas 6 to 9 ft. .TUE NIGHT...SE winds 10 to 15 kt. Seas 6 to 8 ft in NW swell. .WED...SE winds 10 to 15 kt. Seas 5 to 7 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 5 to 6 ft. .THU...E winds 10 to 15 kt. Seas 5 to 6 ft. .THU NIGHT...NE to E winds 10 to 15 kt. Seas 5 to 6 ft. .FRI...NE to E winds 10 to 15 kt. Seas 5 to 7 ft. .FRI NIGHT...NE winds 10 to 15 kt. Seas 6 to 8 ft in NW to N swell. .SAT...E to SE winds 15 to 20 kt. Seas 7 to 10 ft in NW to N swell. .SAT NIGHT...SE to S winds 15 to 20 kt. Seas 8 to 11 ft in N swell. San Juan Caribbean Waters .OVERNIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. .TUE...SE winds 10 to 15 kt. Seas 3 to 4 ft. .TUE NIGHT...E to SE winds 10 to 15 kt. Seas 3 to 4 ft. .WED...E to SE winds 15 kt. Seas 3 to 5 ft. .WED NIGHT...E winds 15 to 20 kt. Seas 4 to 5 ft. .THU...E winds 15 to 20 kt. Seas 4 to 5 ft. .THU NIGHT...NE to E winds 10 to 15 kt. Seas 4 to 5 ft. .FRI...NE to E winds 10 to 15 kt. Seas 3 to 5 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .SAT...SE winds 10 to 15 kt. Seas 4 to 6 ft. .SAT NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft.