


Coastal Waters Forecast
Issued by NWS Wilmington, NC
Issued by NWS Wilmington, NC
958 FZUS52 KILM 171759 CWFILM Coastal Waters Forecast National Weather Service Wilmington NC 159 PM EDT Sun Aug 17 2025 Surf City NC to South Santee River SC out 20 NM AMZ200-180615- 159 PM EDT Sun Aug 17 2025 .Synopsis for coastal waters from Surf City North Carolina to South Santee River South Carolina out to 20 nautical miles... A weak ridge of high pressure over the inland Carolinas will shift towards the coast as another high builds down from the north tonight through Monday behind a weak backdoor cold front. Hurricane Erin will remain offshore as it pushes northward between Bermuda and the U.S. East Coast mid- week next week. Increasing long period Erin swells will impact the waters during the upcoming work-week, with the peak occurring mid- week. $$ AMZ250-180615- Coastal waters from Surf City to Cape Fear NC out 20 nm- 159 PM EDT Sun Aug 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY EVENING THROUGH THURSDAY EVENING... .THIS AFTERNOON...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at 7 seconds and SE 1 ft at 9 seconds. .TONIGHT...SE winds 5 kt, becoming W late. Seas 2 to 3 ft. Wave Detail: E 3 ft at 7 seconds and SE 1 ft at 9 seconds. .MON...NW winds 5 kt, becoming SE in the afternoon. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 14 seconds and E 2 ft at 7 seconds. .MON NIGHT...SE winds 5 to 10 kt, becoming NE after midnight. Seas 4 to 6 ft. Wave Detail: SE 6 ft at 16 seconds and E 2 ft at 7 seconds. A slight chance of showers and tstms after midnight. .TUE...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 8 ft, building to 7 to 9 ft in the afternoon. Wave Detail: SE 7 ft at 15 seconds and E 3 ft at 5 seconds, becoming SE 9 ft at 15 seconds and E 3 ft at 6 seconds. A slight chance of showers in the morning, then a chance of showers and tstms in the afternoon. .TUE NIGHT...NE winds 15 to 20 kt. Seas 7 to 10 ft. Wave Detail: SE 10 ft at 15 seconds and E 2 ft at 6 seconds. A chance of showers and tstms in the evening. .WED...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 9 to 13 ft. Wave Detail: SE 12 ft at 16 seconds and E 4 ft at 7 seconds. A chance of showers. A chance of tstms in the afternoon. .WED NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 9 to 12 ft. A chance of showers and tstms in the evening. .THU...N winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 6 to 9 ft, subsiding to 5 to 7 ft in the afternoon. .THU NIGHT...NE winds 10 to 15 kt. Seas 4 to 5 ft. A chance of showers and tstms. .FRI...NE winds 10 kt. Seas 3 to 4 ft. A chance of showers and tstms. .FRI NIGHT...E winds 10 kt. Seas 3 to 4 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$ AMZ252-180615- Coastal waters from Cape Fear NC to Little River Inlet SC out 20 nm- 159 PM EDT Sun Aug 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY EVENING THROUGH THURSDAY EVENING... .THIS AFTERNOON...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 6 seconds and SE 1 ft at 9 seconds. .TONIGHT...SE winds 5 to 10 kt, becoming S after midnight, then becoming W 5 kt late. Seas 2 to 3 ft. Wave Detail: E 2 ft at 7 seconds and SE 2 ft at 9 seconds. .MON...NW winds 5 kt, becoming S in the afternoon. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 15 seconds and E 2 ft at 7 seconds. .MON NIGHT...SE winds 5 to 10 kt, becoming NE after midnight. Seas 4 to 6 ft. Wave Detail: SE 6 ft at 16 seconds and SE 2 ft at 4 seconds. A slight chance of showers and tstms after midnight. .TUE...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 5 to 7 ft, building to 6 to 9 ft in the afternoon. Wave Detail: SE 7 ft at 15 seconds and E 2 ft at 5 seconds, becoming SE 9 ft at 15 seconds and E 1 ft at 6 seconds. A slight chance of showers in the morning, then a chance of showers and tstms in the afternoon. .TUE NIGHT...NE winds 15 to 20 kt. Seas 7 to 10 ft. Wave Detail: SE 10 ft at 15 seconds and E 1 ft at 6 seconds. A chance of showers and tstms in the evening. .WED...N winds 15 to 20 kt with gusts up to 25 kt. Seas 8 to 11 ft. Wave Detail: SE 11 ft at 16 seconds and NE 3 ft at 7 seconds. A chance of showers. A chance of tstms in the afternoon. .WED NIGHT...N winds 15 to 20 kt with gusts up to 25 kt. Seas 8 to 11 ft. A chance of showers and tstms in the evening. .THU...N winds 10 to 15 kt. Seas 5 to 8 ft, subsiding to 4 to 6 ft in the afternoon. .THU NIGHT...NE winds 10 kt. Seas 3 to 5 ft. A chance of showers. A chance of tstms after midnight. .FRI...E winds 10 kt. Seas 2 to 4 ft. A chance of showers and tstms. .FRI NIGHT...E winds 10 kt. Seas 2 to 4 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$ AMZ254-180615- Coastal waters from Little River Inlet to Murrells Inlet SC out 20 nm- 159 PM EDT Sun Aug 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM LATE MONDAY NIGHT THROUGH THURSDAY AFTERNOON... .THIS AFTERNOON...NE winds 5 to 10 kt, becoming E late. Seas 2 ft. Wave Detail: E 2 ft at 4 seconds and SE 1 ft at 9 seconds. .TONIGHT...SE winds 5 to 10 kt, becoming S after midnight, then becoming W late. Seas 2 ft. Wave Detail: E 2 ft at 5 seconds and E 2 ft at 9 seconds. .MON...NW winds 5 kt, becoming S in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 15 seconds and E 2 ft at 7 seconds. .MON NIGHT...SE winds 10 kt, becoming E after midnight. Seas 3 to 5 ft. Wave Detail: SE 5 ft at 16 seconds and SE 3 ft at 4 seconds. .TUE...NE winds 10 to 15 kt. Gusts up to 20 kt in the afternoon. Seas 5 to 7 ft. Wave Detail: SE 7 ft at 15 seconds and E 3 ft at 6 seconds. A slight chance of showers in the morning, then a chance of showers and tstms in the afternoon. .TUE NIGHT...NE winds 15 to 20 kt. Seas 5 to 8 ft. Wave Detail: SE 8 ft at 15 seconds. A chance of showers and tstms in the evening. .WED...N winds 15 to 20 kt with gusts up to 25 kt. Seas 7 to 10 ft. Wave Detail: SE 10 ft at 16 seconds and NE 1 ft at 6 seconds. A chance of tstms in the afternoon. .WED NIGHT...N winds 15 kt with gusts up to 20 kt. Seas 7 to 10 ft. .THU...N winds 10 to 15 kt. Seas 5 to 7 ft, subsiding to 3 to 5 ft in the afternoon. .THU NIGHT...E winds 10 kt. Seas 3 to 4 ft. A chance of showers and tstms. .FRI...E winds 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. .FRI NIGHT...SE winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$ AMZ256-180615- Coastal waters from Murrells Inlet to South Santee River SC out 20 nm- 159 PM EDT Sun Aug 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM LATE MONDAY NIGHT THROUGH THURSDAY AFTERNOON... .THIS AFTERNOON...NE winds 10 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at 4 seconds and E 1 ft at 9 seconds. .TONIGHT...SE winds 5 to 10 kt, becoming S after midnight, then becoming W late. Seas 2 ft. Wave Detail: E 2 ft at 5 seconds and E 1 ft at 9 seconds. .MON...NW winds 5 kt, becoming SE in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 15 seconds and E 2 ft at 8 seconds. .MON NIGHT...SE winds 5 to 10 kt, becoming E after midnight. Seas 3 to 5 ft. Wave Detail: SE 5 ft at 16 seconds and E 2 ft at 7 seconds. .TUE...NE winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 5 to 8 ft. Wave Detail: SE 8 ft at 15 seconds and E 3 ft at 5 seconds. A slight chance of showers in the morning, then a chance of showers and tstms in the afternoon. .TUE NIGHT...NE winds 15 to 20 kt. Seas 6 to 8 ft. Wave Detail: SE 8 ft at 15 seconds. A chance of showers and tstms in the evening. .WED...N winds 15 to 20 kt with gusts up to 25 kt. Seas 7 to 10 ft. Wave Detail: SE 10 ft at 16 seconds. A chance of showers and tstms in the afternoon. .WED NIGHT...N winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 7 to 10 ft. A chance of showers and tstms in the evening. .THU...N winds 10 to 15 kt. Seas 5 to 8 ft. .THU NIGHT...SE winds 5 to 10 kt. Seas 3 to 5 ft. A chance of showers and tstms. .FRI...E winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers and tstms. .FRI NIGHT...SE winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$