


Coastal Waters Forecast
Issued by NWS Portland, ME
Issued by NWS Portland, ME
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620 FZUS51 KGYX 220542 CWFGYX Coastal Waters Forecast National Weather Service Gray ME 142 AM EDT Fri Aug 22 2025 COASTAL WATERS FROM STONINGTON ME TO MERRIMACK RIVER MA OUT TO 25 NM ANZ100-221945- 142 AM EDT Fri Aug 22 2025 .Synopsis for Stonington ME to Merrimack River Ma out to 25 NM High pressure builds in from the north and will hold over New England through Saturday while Hurricane Erin passes well southeast of the coastal waters. Long period swell from Erin will build, peaking later today into Saturday. The gradient from Erin and high pressure to the north will bring increasing north to northeast flow through the day. Winds shifts out of the south over the weekend and increase ahead of an approaching cold front. $$ ANZ154-221945- Coastal Waters from Cape Elizabeth, ME to Merrimack River, MA out 25 NM- 142 AM EDT Fri Aug 22 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING... .REST OF TONIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. Wave Detail: E 5 ft at 7 seconds and SE 4 ft at 17 seconds. .FRI...N winds 15 to 20 kt, becoming E 5 to 10 kt in the afternoon. Seas 5 to 8 ft. Wave Detail: E 6 ft at 8 seconds and SE 4 ft at 17 seconds. .FRI NIGHT...S winds 5 to 10 kt. Seas 6 to 8 ft. Wave Detail: E 8 ft at 12 seconds and SE 6 ft at 15 seconds. .SAT...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt in the afternoon. Seas 7 to 8 ft. Wave Detail: E 8 ft at 12 seconds. .SAT NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 6 to 7 ft. Wave Detail: E 7 ft at 12 seconds and S 4 ft at 5 seconds. .SUN...S winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 6 ft. Wave Detail: S 5 ft at 5 seconds and E 5 ft at 11 seconds. .SUN NIGHT...S winds 15 to 20 kt with gusts up to 30 kt, diminishing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 4 to 6 ft. A chance of showers after midnight. .MON...S winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely. .MON NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas 2 to 3 ft. Showers likely, mainly in the evening. .TUE...W winds around 10 kt, becoming SW in the afternoon. Seas 2 to 4 ft. .TUE NIGHT...W winds around 10 kt. Seas 4 to 6 ft. $$ ANZ152-221945- Coastal Waters from Port Clyde, ME to Cape Elizabeth, ME out 25 NM- 142 AM EDT Fri Aug 22 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING... .REST OF TONIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 5 to 7 ft. Wave Detail: S 6 ft at 17 seconds. .FRI...N winds 10 to 15 kt, becoming E 5 to 10 kt in the afternoon. Gusts up to 25 kt. Seas 6 to 9 ft. Wave Detail: S 7 ft at 17 seconds and SE 6 ft at 9 seconds. .FRI NIGHT...SW winds 5 to 10 kt. Seas 7 to 10 ft. Wave Detail: SE 8 ft at 12 seconds and SE 7 ft at 16 seconds. .SAT...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt in the afternoon. Seas 5 to 8 ft. Wave Detail: SE 8 ft at 12 seconds. .SAT NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft. Wave Detail: SE 7 ft at 12 seconds and S 4 ft at 5 seconds. .SUN...S winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 6 ft. Wave Detail: S 5 ft at 5 seconds and E 4 ft at 11 seconds. .SUN NIGHT...S winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 4 to 6 ft. A chance of showers after midnight. .MON...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Showers likely. .MON NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas 2 to 3 ft. A chance of showers. .TUE...W winds 5 to 10 kt, becoming SW with gusts up to 20 kt in the afternoon. Seas 3 to 5 ft. .TUE NIGHT...W winds 5 to 10 kt. Seas 5 to 7 ft. $$ ANZ150-221945- Coastal Waters from Stonington, ME to Port Clyde, ME out 25 NM- 142 AM EDT Fri Aug 22 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING... .REST OF TONIGHT...NE winds 5 to 10 kt, increasing to 10 to 15 kt towards daybreak. Seas 5 to 7 ft. Wave Detail: S 7 ft at 17 seconds. .FRI...N winds 10 to 15 kt, becoming NE in the afternoon. Gusts up to 25 kt. Seas 6 to 9 ft, building to 8 to 10 ft in the afternoon. Wave Detail: S 8 ft at 17 seconds, becoming S 8 ft at 17 seconds and SE 5 ft at 9 seconds. .FRI NIGHT...SW winds around 5 kt. Seas 7 to 10 ft. Wave Detail: SE 8 ft at 16 seconds. .SAT...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 6 to 8 ft, subsiding to 5 to 6 ft in the afternoon. Wave Detail: SE 7 ft at 12 seconds, becoming SE 6 ft at 12 seconds. .SAT NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 6 ft. Wave Detail: SE 5 ft at 12 seconds and S 4 ft at 5 seconds. .SUN...S winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 5 ft. Wave Detail: S 5 ft at 6 seconds and E 3 ft at 11 seconds. .SUN NIGHT...S winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 3 to 5 ft. A chance of showers after midnight. .MON...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Showers likely. .MON NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas 2 to 3 ft. A chance of showers. .TUE...W winds 5 to 10 kt. Seas 4 to 6 ft. .TUE NIGHT...W winds 5 to 10 kt with gusts up to 20 kt. Seas 5 to 8 ft. $$ ANZ153-221945- Casco Bay- 142 AM EDT Fri Aug 22 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING... .REST OF TONIGHT...N winds 5 to 10 kt. Seas 2 to 4 ft. .FRI...N winds 5 to 10 kt, becoming E with gusts up to 20 kt in the afternoon. Seas 3 to 5 ft. .FRI NIGHT...S winds 5 to 10 kt. Seas 3 to 5 ft. .SAT...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 3 to 5 ft. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. .SUN...S winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .SUN NIGHT...S winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 2 to 4 ft. A chance of showers after midnight. .MON...S winds around 10 kt. Seas 2 to 3 ft. Showers likely. .MON NIGHT...S winds 5 to 10 kt, becoming W after midnight. Seas around 2 ft. Showers likely, mainly in the evening. .TUE...W winds 5 to 10 kt. Seas 2 to 4 ft. .TUE NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. $$ ANZ151-221945- Penobscot Bay- 142 AM EDT Fri Aug 22 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING... .REST OF TONIGHT...N winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: S 4 ft at 17 seconds. .FRI...N winds 5 to 10 kt, becoming NE in the afternoon. Seas 3 to 5 ft. Wave Detail: S 5 ft at 17 seconds. .FRI NIGHT...SW winds around 5 kt. Seas 4 to 6 ft. Wave Detail: S 5 ft at 14 seconds. .SAT...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 4 ft. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds. .SUN...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds. .SUN NIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. A chance of showers after midnight. .MON...S winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely. .MON NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas around 2 ft. Showers likely, mainly in the evening. .TUE...SW winds 5 to 10 kt. Seas 2 to 4 ft. .TUE NIGHT...W winds 5 to 10 kt. Seas 3 to 5 ft. $$