


Coastal Waters Forecast
Issued by NWS Portland, ME
Issued by NWS Portland, ME
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191 FZUS51 KGYX 040604 CWFGYX Coastal Waters Forecast National Weather Service Gray ME 204 AM EDT Thu Sep 4 2025 COASTAL WATERS FROM STONINGTON ME TO MERRIMACK RIVER MA OUT TO 25 NM ANZ100-042015- 204 AM EDT Thu Sep 4 2025 .Synopsis for Stonington ME to Merrimack River Ma out to 25 NM Southerly winds will gradually increase today as high pressure shifts farther offshore and a cold front slowly approaches from the Great Lakes. Moisture advection ahead of the front will likely bring patchy fog tonight over the waters with chances for showers. Additional fronts approaching from the west will keep a tight southerly gradient over the waters Friday into Saturday with conditions likely to be hazardous to small craft. $$ ANZ154-042015- Coastal Waters from Cape Elizabeth, ME to Merrimack River, MA out 25 NM- 204 AM EDT Thu Sep 4 2025 .TODAY...S winds 5 to 10 kt with gusts up to 20 kt, increasing to 10 to 15 kt with gusts up to 20 kt late. Seas around 3 ft. Wave Detail: SE 3 ft at 8 seconds. Patchy fog this morning. .TONIGHT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 4 seconds and E 3 ft at 8 seconds. A chance of showers after midnight. Patchy fog after midnight with vsby 1 NM or less. .FRI...S winds 10 to 15 kt with gusts up to 20 kt, increasing to 15 to 20 kt with gusts up to 30 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: S 4 ft at 5 seconds and SE 3 ft at 8 seconds. A chance of showers in the morning. Patchy fog in the morning with vsby 1 NM or less. .FRI NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. Wave Detail: SE 5 ft at 6 seconds. .SAT...S winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Gusts up to 30 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 7 seconds. A chance of showers in the afternoon. .SAT NIGHT...SW winds 15 to 20 kt, becoming W 10 to 15 kt after midnight. Seas 2 to 4 ft. Wave Detail: SE 4 ft at 6 seconds. Showers likely. .SUN...NW winds 5 to 10 kt, becoming NE in the afternoon. Seas 2 to 3 ft. Showers likely, mainly in the morning. .SUN NIGHT...S winds around 5 kt, becoming NW after midnight. Seas 2 to 3 ft. A chance of showers. .MON...NW winds 5 to 10 kt, becoming W in the afternoon. Seas 2 to 3 ft. .MON NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas 2 to 3 ft. $$ ANZ152-042015- Coastal Waters from Port Clyde, ME to Cape Elizabeth, ME out 25 NM- 204 AM EDT Thu Sep 4 2025 .TODAY...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds. Patchy fog this morning. Vsby 1 to 3 NM early this morning. .TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 4 seconds and SE 3 ft at 8 seconds. Patchy fog. Vsby 1 NM or less. .FRI...S winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: S 4 ft at 5 seconds and SE 2 ft at 8 seconds. Patchy fog. Vsby 1 NM or less. .FRI NIGHT...S winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 5 ft. Wave Detail: S 5 ft at 6 seconds. Patchy fog in the evening with vsby 1 NM or less. .SAT...S winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 4 to 5 ft. Wave Detail: S 5 ft at 7 seconds. A chance of showers in the afternoon. .SAT NIGHT...SW winds 15 to 20 kt, becoming W 10 to 15 kt after midnight. Seas 3 to 4 ft. Wave Detail: S 4 ft at 7 seconds. Showers likely. .SUN...NW winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely, mainly in the morning. .SUN NIGHT...SW winds around 5 kt, becoming NW after midnight. Seas 2 to 3 ft. A chance of showers. .MON...N winds 5 to 10 kt, becoming W in the afternoon. Seas 2 to 3 ft. .MON NIGHT...W winds 5 to 10 kt, becoming N after midnight. Seas 2 to 3 ft. $$ ANZ150-042015- Coastal Waters from Stonington, ME to Port Clyde, ME out 25 NM- 204 AM EDT Thu Sep 4 2025 .TODAY...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 8 seconds. Patchy fog this morning. Vsby 1 to 3 NM early this morning. .TONIGHT...S winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds and SE 2 ft at 8 seconds. Patchy fog. Vsby 1 NM or less. .FRI...S winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 5 seconds and SE 2 ft at 8 seconds. Patchy fog. Vsby 1 NM or less. .FRI NIGHT...S winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 5 ft. Wave Detail: S 5 ft at 8 seconds and S 4 ft at 5 seconds. Patchy fog in the evening with vsby 1 NM or less. .SAT...S winds 10 to 15 kt, increasing to 15 to 20 kt in the afternoon. Seas 4 to 5 ft. Wave Detail: S 5 ft at 7 seconds. A chance of showers in the afternoon. .SAT NIGHT...S winds 15 to 20 kt, becoming SW 10 to 15 kt after midnight. Seas 3 to 5 ft. Wave Detail: S 5 ft at 7 seconds. A chance of showers in the evening, then showers likely after midnight. .SUN...N winds 5 to 10 kt. Seas 2 to 4 ft. Showers likely. .SUN NIGHT...W winds 5 to 10 kt. Seas 2 to 4 ft. A chance of showers. .MON...N winds 5 to 10 kt, becoming W in the afternoon. Seas 3 to 4 ft. A chance of showers in the morning. .MON NIGHT...W winds 5 to 10 kt, becoming NW after midnight. Seas 2 to 3 ft. $$ ANZ153-042015- Casco Bay- 204 AM EDT Thu Sep 4 2025 .TODAY...S winds 5 to 10 kt with gusts up to 20 kt, becoming around 10 kt with gusts up to 20 kt late. Seas 2 to 3 ft. Patchy fog this morning. .TONIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Patchy fog. A chance of showers after midnight. Vsby 1 NM or less. .FRI...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers in the morning. Patchy fog in the morning with vsby 1 NM or less. .FRI NIGHT...S winds 15 to 20 kt, diminishing to 10 to 15 kt after midnight. Seas 2 to 4 ft. Patchy fog in the evening with vsby 1 NM or less. .SAT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers in the afternoon. .SAT NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 4 ft. Showers likely. .SUN...N winds 5 to 10 kt, becoming NW in the afternoon. Seas 2 to 3 ft. Showers likely, mainly in the morning. .SUN NIGHT...SW winds around 5 kt, becoming NW after midnight. Seas around 2 ft. A chance of showers in the evening. .MON...NW winds around 5 kt, becoming W in the afternoon. Seas 2 to 3 ft. .MON NIGHT...NW winds around 5 kt. Seas around 2 ft. $$ ANZ151-042015- Penobscot Bay- 204 AM EDT Thu Sep 4 2025 .TODAY...S winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft this afternoon. Patchy fog this morning. Vsby 1 NM or less, increasing to 1 to 3 NM late this morning. .TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Patchy fog. Vsby 1 NM or less. .FRI...S winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft at 3 seconds. A chance of showers in the morning. Patchy fog. Vsby 1 NM or less. .FRI NIGHT...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 6 seconds. Patchy fog in the evening with vsby 1 NM or less. .SAT...S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at 7 seconds. A chance of showers in the afternoon. .SAT NIGHT...S winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: S 3 ft at 6 seconds. Showers likely. .SUN...NW winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely, mainly in the morning. .SUN NIGHT...W winds around 5 kt. Seas 2 to 3 ft. A chance of showers. .MON...NW winds around 5 kt, becoming W in the afternoon. Seas 2 to 3 ft. .MON NIGHT...NW winds around 5 kt. Seas around 2 ft. $$