


Coastal Waters Forecast
Issued by NWS Portland, ME
Issued by NWS Portland, ME
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617 FZUS51 KGYX 292102 CWFGYX Coastal Waters Forecast National Weather Service Gray ME 502 PM EDT Mon Sep 29 2025 COASTAL WATERS FROM STONINGTON ME TO MERRIMACK RIVER MA OUT TO 25 NM ANZ100-301000- 502 PM EDT Mon Sep 29 2025 .Synopsis for Stonington ME to Merrimack River Ma out to 25 NM High pressure remains in place across the waters through early this week. A backdoor front moves through from the north late tonight and Tuesday, with high pressure building in again for the second half of the week. Long period swells from distant Hurricane Humberto arrive on Tuesday and may last through Thursday building seas to 5 to 7 feet. $$ ANZ154-301000- Coastal Waters from Cape Elizabeth, ME to Merrimack River, MA out 25 NM- 502 PM EDT Mon Sep 29 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH WEDNESDAY EVENING... .TONIGHT...SW winds 5 to 10 kt with gusts up to 20 kt, becoming W after midnight. Seas 2 to 4 ft. Wave Detail: SE 3 ft at 14 seconds and S 2 ft at 3 seconds. .TUE...N winds 5 to 10 kt, becoming NE in the afternoon. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 14 seconds. .TUE NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. Wave Detail: NE 5 ft at 4 seconds and SE 4 ft at 14 seconds. .WED...N winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: NE 5 ft at 5 seconds and SE 4 ft at 14 seconds. .WED NIGHT...N winds 15 to 20 kt with gusts up to 35 kt. Seas 5 to 7 ft. Wave Detail: NE 6 ft at 7 seconds and SE 3 ft at 14 seconds. .THU...N winds 15 to 20 kt with gusts up to 30 kt, becoming NE 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 5 to 7 ft. Wave Detail: NE 6 ft at 7 seconds and SE 3 ft at 13 seconds. .THU NIGHT...S winds around 5 kt, becoming SW after midnight. Seas 4 to 5 ft. .FRI...SW winds 5 to 10 kt. Seas 3 to 4 ft. .FRI NIGHT...SW winds 5 to 10 kt. Seas 3 to 4 ft. .SAT...W winds around 5 kt, becoming S in the afternoon. Seas 3 to 4 ft. .SAT NIGHT...SW winds 5 to 10 kt. Seas 3 to 4 ft. $$ ANZ152-301000- Coastal Waters from Port Clyde, ME to Cape Elizabeth, ME out 25 NM- 502 PM EDT Mon Sep 29 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH WEDNESDAY EVENING... .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight, then becoming NW towards daybreak. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 3 ft at 12 seconds. .TUE...N winds 5 to 10 kt, becoming E in the afternoon. Seas 3 to 5 ft. Wave Detail: SE 5 ft at 15 seconds. .TUE NIGHT...NE winds 10 to 15 kt, becoming N 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: SE 6 ft at 14 seconds and NE 4 ft at 4 seconds. .WED...N winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: S 5 ft at 14 seconds and NE 4 ft at 5 seconds. .WED NIGHT...N winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: NE 5 ft at 6 seconds and S 5 ft at 14 seconds. .THU...N winds 15 to 20 kt, becoming NE 5 to 10 kt in the afternoon. Seas 5 to 7 ft. Wave Detail: NE 5 ft at 7 seconds and S 5 ft at 14 seconds. .THU NIGHT...SW winds 5 to 10 kt. Seas 3 to 5 ft. .FRI...SW winds 5 to 10 kt. Seas 3 to 4 ft. .FRI NIGHT...W winds 5 to 10 kt. Seas 3 to 4 ft. .SAT...W winds 5 to 10 kt. Seas around 3 ft. .SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. $$ ANZ150-301000- Coastal Waters from Stonington, ME to Port Clyde, ME out 25 NM- 502 PM EDT Mon Sep 29 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH WEDNESDAY EVENING... .TONIGHT...SW winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt with gusts up to 20 kt after midnight, then becoming N towards daybreak. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and SE 3 ft at 14 seconds. .TUE...NE winds 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: S 5 ft at 15 seconds and S 3 ft at 5 seconds. .TUE NIGHT...NE winds 10 to 15 kt, becoming N 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 5 to 7 ft. Wave Detail: S 6 ft at 15 seconds. .WED...N winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 8 ft. Wave Detail: SE 6 ft at 14 seconds and NE 4 ft at 4 seconds. .WED NIGHT...N winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 8 ft. Wave Detail: S 6 ft at 14 seconds and NE 5 ft at 5 seconds. .THU...N winds 15 to 20 kt, diminishing to 5 to 10 kt in the afternoon. Seas 5 to 8 ft, subsiding to 4 to 6 ft in the afternoon. Wave Detail: S 6 ft at 14 seconds and NE 5 ft at 6 seconds, becoming NE 4 ft at 6 seconds and S 4 ft at 12 seconds. .THU NIGHT...W winds 5 to 10 kt. Seas 3 to 4 ft. .FRI...SW winds 5 to 10 kt. Seas 3 to 4 ft. .FRI NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. .SAT...W winds 5 to 10 kt. Seas 2 to 3 ft. .SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. $$ ANZ153-301000- Casco Bay- 502 PM EDT Mon Sep 29 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY MORNING THROUGH WEDNESDAY EVENING... .TONIGHT...SW winds 5 to 10 kt with gusts up to 20 kt, becoming NW towards daybreak. Seas 2 to 3 ft. .TUE...N winds 5 to 10 kt, becoming NE in the afternoon. Seas 2 to 4 ft. .TUE NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. .WED...N winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .WED NIGHT...N winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 2 to 4 ft. .THU...N winds 10 to 15 kt with gusts up to 20 kt, becoming NE 5 to 10 kt in the afternoon. Seas 2 to 4 ft. .THU NIGHT...SW winds around 5 kt. Seas 2 to 4 ft. .FRI...SW winds 5 to 10 kt. Seas 2 to 3 ft. .FRI NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas 2 to 3 ft. .SAT...W winds around 5 kt, becoming S around 5 kt in the afternoon. Seas 2 to 3 ft. .SAT NIGHT...SW winds around 5 kt. Seas around 2 ft. $$ ANZ151-301000- Penobscot Bay- 502 PM EDT Mon Sep 29 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY MORNING THROUGH WEDNESDAY EVENING... .TONIGHT...SW winds 5 to 10 kt with gusts up to 20 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 4 seconds. .TUE...N winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 15 seconds. .TUE NIGHT...N winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at 15 seconds. .WED...N winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 2 to 4 ft. Wave Detail: S 4 ft at 14 seconds. .WED NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 5 ft. Wave Detail: S 4 ft at 14 seconds. .THU...N winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: S 4 ft at 13 seconds. .THU NIGHT...W winds around 5 kt. Seas 2 to 3 ft. .FRI...SW winds 5 to 10 kt. Seas around 2 ft. .FRI NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas around 2 ft. .SAT...W winds around 5 kt. Seas around 2 ft. .SAT NIGHT...SW winds around 5 kt. Seas around 2 ft. $$