Coastal Waters Forecast
Issued by NWS Portland, ME
Issued by NWS Portland, ME
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510 FZUS51 KGYX 201445 CWFGYX Coastal Waters Forecast National Weather Service Gray ME 1045 AM EDT Sun Sep 20 2026 COASTAL WATERS FROM STONINGTON ME TO MERRIMACK RIVER MA OUT TO 60 NM ANZ100-210445- 1045 AM EDT Sun Sep 20 2026 .Synopsis for Stonington ME to Merrimack River Ma out to 60 NM... Low pressure passes south of the waters this evening bringing rain that may be heavy at times across the southern waters. Strong high pressure north of the Great Lakes then slowly makes its way east through midweek. Broad low pressure will deepen south of the waters late week into the weekend. Depending on proximity, this could bring increasing wave heights amid persistent northwest winds. $$ ANZ151-210445- Penobscot Bay- 1045 AM EDT Sun Sep 20 2026 .REST OF TODAY...S winds 5 to 10 kt. Seas 1 foot or less. A slight chance of rain early this afternoon. A chance of rain late. .TONIGHT...SE winds around 5 kt, becoming N after midnight. Seas 1 foot or less. Patchy fog in the evening. A chance of rain in the evening, then a chance of showers after midnight. Vsby 1 to 3 NM. .MON...N winds 5 to 10 kt. Seas around 2 ft. .MON NIGHT...N winds 5 to 10 kt. Seas 1 foot or less, then around 2 ft after midnight. .TUE...NE winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...NE winds around 5 kt, increasing to 5 to 10 kt after midnight. Seas around 2 ft. .WED...NE winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft. .WED NIGHT...NE winds around 5 kt. Seas around 2 ft. .THU...NE winds 5 to 10 kt. Seas 2 to 4 ft. .THU NIGHT...NE winds around 5 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 4 ft. $$ ANZ153-210445- Casco Bay- 1045 AM EDT Sun Sep 20 2026 .REST OF TODAY...S winds 5 to 10 kt. Seas around 2 ft. A slight chance of rain late this morning, then a chance of rain early this afternoon. Rain late. .TONIGHT...E winds 5 to 10 kt, becoming N after midnight. Seas around 2 ft. Patchy fog in the evening. Rain in the evening, then a chance of showers after midnight. Vsby 1 to 3 NM. .MON...N winds 5 to 10 kt. Seas around 2 ft. .MON NIGHT...N winds 5 to 10 kt, becoming NE 10 to 15 kt after midnight. Seas around 2 ft. .TUE...NE winds 5 to 10 kt. Seas around 2 ft. .TUE NIGHT...NE winds around 5 kt, increasing to 5 to 10 kt with gusts up to 20 kt after midnight. Seas around 2 ft. .WED...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. .WED NIGHT...NE winds 5 to 10 kt. Seas 2 to 4 ft. .THU...NE winds 5 to 10 kt, increasing to 10 to 15 kt in the afternoon. Seas 3 to 5 ft. .THU NIGHT...NE winds 5 to 10 kt, becoming N 10 to 15 kt with gusts up to 20 kt after midnight. Seas 4 to 6 ft. A chance of showers after midnight. $$ ANZ150-210445- Coastal Waters from Stonington, ME to Port Clyde, ME out 25 NM- 1045 AM EDT Sun Sep 20 2026 .REST OF TODAY...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds. A slight chance of rain early this afternoon. A chance of rain late with vsby 1 to 3 NM. .TONIGHT...SE winds around 5 kt, becoming NE after midnight. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds. Patchy fog in the evening. Rain likely in the evening, then a chance of showers after midnight. Vsby 1 to 3 NM. .MON...N winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds. .MON NIGHT...N winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 4 seconds and SE 2 ft at 9 seconds. .TUE...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 4 seconds and SE 2 ft at 9 seconds. .TUE NIGHT...NE winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 4 seconds and SE 2 ft at 8 seconds. .WED...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .WED NIGHT...NE winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Seas 4 to 6 ft. .THU...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 5 to 7 ft, building to 6 to 9 ft in the afternoon. .THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt, increasing to 15 to 20 kt with gusts up to 30 kt after midnight. Seas 6 to 9 ft. A chance of showers after midnight. $$ ANZ152-210445- Coastal Waters from Port Clyde, ME to Cape Elizabeth, ME out 25 NM- 1045 AM EDT Sun Sep 20 2026 .REST OF TODAY...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds. A slight chance of rain late this morning, then a chance of rain early this afternoon. Rain likely late with vsby 1 to 3 NM. .TONIGHT...E winds 5 to 10 kt, becoming NE with gusts up to 20 kt after midnight. Seas around 2 ft. Wave Detail: SE 2 ft at 4 seconds. Rain in the evening, then a chance of showers after midnight. Vsby 1 to 3 NM. .MON...N winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds. .MON NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 4 seconds and SE 2 ft at 9 seconds. .TUE...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: NE 3 ft at 5 seconds and SE 2 ft at 9 seconds. .TUE NIGHT...NE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at 7 seconds. .WED...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. .WED NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. .THU...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 7 ft, building to 6 to 9 ft in the afternoon. .THU NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt, increasing to 15 to 20 kt with gusts up to 30 kt after midnight. Seas 7 to 10 ft. A chance of showers after midnight. $$ ANZ154-210445- Coastal Waters from Cape Elizabeth, ME to Merrimack River, MA out 25 NM- 1045 AM EDT Sun Sep 20 2026 .REST OF TODAY...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds. A slight chance of rain late this morning, then a chance of rain early this afternoon. Rain late. .TONIGHT...E winds 5 to 10 kt, becoming NE 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds. Rain. Vsby 1 to 3 NM. .MON...N winds 10 to 15 kt, becoming NE 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 4 seconds. .MON NIGHT...NE winds 5 to 10 kt, increasing to 15 to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 5 seconds and SE 2 ft at 8 seconds. .TUE...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at 5 seconds and SE 2 ft at 8 seconds. .TUE NIGHT...NE winds 5 to 10 kt, increasing to 10 to 15 kt after midnight. Gusts up to 25 kt. Seas around 3 ft. Wave Detail: E 3 ft at 7 seconds. .WED...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft. .WED NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt. Seas 5 to 7 ft. .THU...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 6 to 9 ft. .THU NIGHT...NE winds 10 to 15 kt with gusts up to 25 kt, increasing to 15 to 20 kt with gusts up to 35 kt after midnight. Seas 8 to 10 ft. A chance of showers after midnight. $$ ANZ180-210445- Waters from Stonington ME to Port Clyde ME from 25 to 60 NM- 1045 AM EDT Sun Sep 20 2026 .REST OF TODAY...S winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt late. Seas around 2 ft. Wave Detail: SE 2 ft at 3 seconds. A slight chance of rain early this afternoon. A chance of rain late. .TONIGHT...SE winds 5 to 10 kt, becoming NE with gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds. A chance of rain in the evening, then a chance of showers after midnight. Vsby 1 to 3 NM. .MON...N winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: NE 3 ft at 4 seconds. .MON NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail: N 4 ft at 4 seconds and SE 2 ft at 10 seconds. .TUE...NE winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: NE 4 ft at 5 seconds and SE 2 ft at 8 seconds. .TUE NIGHT...NE winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 3 to 4 ft. Wave Detail: E 3 ft at 6 seconds. .WED...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. .WED NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 8 ft. .THU...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 8 to 11 ft. .THU NIGHT...NE winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Gusts up to 35 kt. Seas 9 to 11 ft. A chance of showers after midnight. $$ ANZ182-210445- Waters from Port Clyde ME to Cape Elizabeth ME from 25 to 60 NM- 1045 AM EDT Sun Sep 20 2026 .REST OF TODAY...S winds 10 to 15 kt, becoming SE 5 to 10 kt late. Seas around 2 ft. Wave Detail: SE 2 ft at 3 seconds. A slight chance of rain late this morning, then a chance of rain this afternoon. .TONIGHT...E winds 5 to 10 kt, becoming NE with gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: SE 2 ft at 4 seconds. Rain likely. Vsby 1 to 3 NM. .MON...N winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave Detail: NE 3 ft at 4 seconds. .MON NIGHT...N winds 10 to 15 kt, becoming NE 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 2 to 4 ft. Wave Detail: NE 4 ft at 5 seconds and SE 2 ft at 9 seconds. .TUE...NE winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: E 4 ft at 7 seconds. .TUE NIGHT...NE winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 3 to 4 ft. Wave Detail: E 4 ft at 7 seconds. .WED...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. .WED NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 8 ft. .THU...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 8 to 11 ft. .THU NIGHT...NE winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Gusts up to 35 kt. Seas 10 to 11 ft. A chance of showers. $$ ANZ184-210445- Waters from Cape Elizabeth ME to Merrimack River MA from 25 to 60 NM- 1045 AM EDT Sun Sep 20 2026 .REST OF TODAY...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE 2 ft at 3 seconds. A slight chance of rain late this morning, then a chance of rain early this afternoon. Rain likely late. .TONIGHT...E winds 5 to 10 kt, becoming NE 10 to 15 kt with gusts up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: E 2 ft at 4 seconds. Rain likely. Vsby 1 to 3 NM. .MON...NE winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: NE 3 ft at 4 seconds. .MON NIGHT...NE winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 2 to 4 ft. Wave Detail: NE 4 ft at 5 seconds and SE 2 ft at 9 seconds. .TUE...NE winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: E 4 ft at 7 seconds. .TUE NIGHT...NE winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 3 to 4 ft. Wave Detail: E 4 ft at 7 seconds and SE 2 ft at 8 seconds. .WED...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 4 to 6 ft. .WED NIGHT...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 5 to 8 ft. .THU...NE winds 15 to 20 kt with gusts up to 30 kt. Seas 7 to 9 ft, building to 9 to 11 ft in the afternoon. .THU NIGHT...NE winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Gusts up to 35 kt. Seas 10 to 11 ft. A chance of showers. $$