Stonington ME to Port Clyde ME Marine Forecast
| Tonight...Se Winds 15 To 20 Kt With Gusts Up To 30 Kt, Becoming S 20 To 25 Kt With Gusts Up To 35 Kt After Midnight. Seas 4 To 5 Ft, Building To 5 To 8 Ft After Midnight. Wave Detail: Se 5 Ft At 7 Seconds, Becoming Se 8 Ft At 7 Seconds. Patchy Dense Fog. A Chance Of Showers This Evening. A Slight Chance Of Tstms Late This Evening And Overnight. Showers Likely After Midnight. Vsby 1 Nm Or Less. |
| Thu...Sw Winds 20 To 25 Kt, Becoming W 15 To 20 Kt In The Afternoon. Gusts Up To 35 Kt. Seas 6 To 9 Ft. Wave Detail: S 9 Ft At 8 Seconds And E 3 Ft At 7 Seconds. A Chance Of Showers In The Morning, Then Showers Likely In The Afternoon. |
| Thu Night...Nw Winds 15 To 20 Kt With Gusts Up To 35 Kt. Seas 5 To 7 Ft. Wave Detail: S 7 Ft At 8 Seconds. A Chance Of Rain And Snow Showers In The Evening With Vsby 1 Nm Or Less. |
| Fri...W Winds 15 To 20 Kt, Becoming Sw In The Afternoon. Gusts Up To 30 Kt. Seas 4 To 6 Ft. Wave Detail: Sw 5 Ft At 6 Seconds And S 4 Ft At 9 Seconds. |
| Fri Night...S Winds 20 To 25 Kt With Gusts Up To 35 Kt. Seas 5 To 8 Ft, Building To 7 To 10 Ft After Midnight. Wave Detail: Sw 7 Ft At 6 Seconds And S 4 Ft At 10 Seconds, Becoming S 10 Ft At 8 Seconds. A Chance Of Rain And Snow. Vsby 1 Nm Or Less In The Evening. |
| Sat...Sw Winds 25 To 30 Kt With Gusts Up To 35 Kt. Seas 8 To 11 Ft. Wave Detail: S 11 Ft At 9 Seconds. A Chance Of Rain And Snow In The Morning. |
| Sat Night...W Winds 25 To 30 Kt With Gusts Up To 40 Kt. Seas 8 To 11 Ft, Subsiding To 6 To 9 Ft After Midnight. |
| Sun...Nw Winds 15 To 20 Kt With Gusts Up To 30 Kt, Becoming Sw 5 To 10 Kt In The Afternoon. Seas 4 To 6 Ft, Subsiding To 2 To 3 Ft In The Afternoon. |
| Sun Night...S Winds 15 To 20 Kt With Gusts Up To 30 Kt, Becoming Se 25 To 30 Kt With Gusts Up To 40 Kt After Midnight. Seas 2 To 4 Ft, Building To 5 To 8 Ft After Midnight. A Chance Of Snow And Rain After Midnight With Vsby 1 To 3 Nm. |
| Mon...S Winds 25 To 35 Kt With Gusts Up To 45 Kt. Seas 10 To 14 Ft, Building To 13 To 17 Ft In The Afternoon. Rain. |
| Mon Night...Sw Winds 25 To 35 Kt With Gusts Up To 45 Kt. Seas 14 To 17 Ft, Subsiding To 11 To 15 Ft After Midnight. Rain. Winds And Seas Higher In And Near Tstms. |
| Area Forecast Discussion National Weather Service Gray ME 827pm EDT Wednesday Mar 11 2026 .WHAT HAS CHANGED... The forecast remains on track. Showers are moving through the area currently and temperatures are remaining well above freezing across the area. Confidence is increasing in a warm, wet, and windy storm coming through the forecast area late this weekend into early next week. .KEY MESSAGES... 1. Low pressure continues to move through the area, bringing showers through the area this evening. Some showers may fall as wintry mix along the Canadian border, but most should be seeing precipitation as rain. River flooding looks to remain relatively minor with Quantitative Precipitation Forecast not looking overly robust. Winds westerly winds may gust 20 to 40 MPH in the wake of the cold front on Thursday. 2. Low pressure exiting the Great Lakes will bring snow to the region Friday evening into Saturday afternoon. Accumulations are most likely across the mountains and foothills, with the potential for rain to mix in towards the interior and coast. 3. A larger system will take shape into the beginning of next week. This would feature another warmup, rainfall, and the potential for strong wind gusts. The main concern with this system are hydrologic, with snowmelt and rainfall potentially lifting and moving river ice. Secondary at this time are wind gusts, but there is uncertainty how strong gusts may be inland from the coast. KEY MESSAGE 1 DESCRIPTION... A low pressure system to the west of New England will continue to bring southerly winds and warm, above freezing temperatures to the region. These warmer temperatures will be accompanied by some showers this evening. Most of the showers look to be on the lighter side. If enough destabilization occurs across the eastern OH river valley this afternoon, some elevated convection may move into southern New Hampshire. As a result, some overnight showers down there do have the potential to have a few rumbles of thunder with it. Scattered showers are likely to continue into the day on Thursday as a cold front continues to move eastward. By Thursday night, any lingering showers may change over to snow as below-freezing air works into the area. KEY MESSAGE 2 DESCRIPTION... Low pressure will travel from the northern Great Lakes eastward along the St Lawrence Valley Friday night into Saturday. It will begin to spread precipitation into NH Friday afternoon or evening, gradually moving into western Maine overnight. Profile temperatures are below freezing aloft, and would expect precipitation types for this event to be between rain and snow, rather than a wintry mix with sleet and freezing rain. The low looks to maintain strength as it passes overhead into Saturday morning, broadening as some guidance hints at secondary development along the Gulf of Maine coast. Believe there is a chance for Quantitative Precipitation Forecast to trend upward should this second low take over. Improved lift from nearby jet dynamics would support this, and some model profiles also display a short but intense period of a crosshair signature of lift through a thin DGZ. At this time, the probability of greater than a quarter inch of Quantitative Precipitation Forecast is limited across the area, with the better chance north of a Portland to Lebanon, NH line. This also aligns with the quadrant we'd see potential fgen banding if low along the coast deepens. Trended the forecast to include more in the way of snow across the interior, with rain/snow along the coast. Ptypes along the coast may come down to rates via dynamic cooling (ie dependent on how the low performs along the coast). However, the combination of limited Quantitative Precipitation Forecast and mild surface temps may make it difficult to accumulate impactful snowfall outside of higher terrain. KEY MESSAGE 3 DESCRIPTION... The next system into early next week occurs as the upper pattern becomes much more amplified. As a result, strong surface low pressure deepens into the Great Lakes as incoming upper jet arrives out of the Pacific Northwest. Ridging results later this weekend over New England as the deep troughing moves into the Plains. This vigorous pattern shift will create a strong and broad southerly moisture transport through the eastern CONUS towards New England. Global ensembles unanimously agree that a plume of IVT exceeding 500 kg/m/s will push along the East Coast Monday. This would result in warming temperatures and plenty of moisture for precipitation. In combination with dynamics arriving from the west, would expect periods of widespread rainfall to occur through the day and into the evening. NBM probabilities of an inch or more of Quantitative Precipitation Forecast are focused along the coast, interior, and foothills through the forecast area (70 percent). Greater than 2 inches is not statistically significant at this time, but there is some favoritism towards the Mid-Coast. With any strong southerly jet this time of year, winds will also be a potential impact to monitor. Surface winds are of lesser confidence at this range, but aloft we can start looking at the potency of the LLJ transiting the forecast area Sunday night and Monday. The favored cluster at this time (featuring a deeper trough than the mean), brings increasing 850mb winds of 50 to 65kts through northern New England Monday afternoon. While model soundings show a low level inversion, there is also indication of instability through the profile that could mix gusts to the surface. As mentioned earlier, will hone in on timing and gust factor as confidence in the event increases. The combination of warmer temperatures and rainfall will bring additional snowmelt and runoff into area streams and rivers. As this is expected to contribute to the hydro system quicker due to the potential for greater rain rates, lifting and movement of river ice is expected. Those with interests along area rivers, especially those prone to ice jams, should remain diligent to the forecast as it evolves. Marine Southerly SCA (Small Craft Advisory) winds are expected to continue mid-day Thursday. Winds are likely to get to Gale Force over the open waters offshore from Penobscot Bay. By Thursday afternoon, a cold front moves through and will flip winds to northwesterlies. Winds look to be below SCA (Small Craft Advisory) levels again by Friday morning. Seas of 5-8ft are expected during this period. Area of low pressure nears the waters Fri night into Saturday. This will again bring a period of winds over the waters of 25 to 30 kts. A buildup of waves 6 to 11 ft is also forecast amid southerly wind direction. Can't rule out a few gusts to Gale force on the outer waters. A stronger low cuts through the Great Lakes late this weekend, with a broad southerly fetch into Monday. Strong low level winds mix down, with at least Gale conditions expected. Wave heigheights are also expected to increase above 10ft for much of the coastal waters. Winds become west Monday night. NOAA Gray/Portland ME Office - Watches - Warnings - Advisories ME...Winter Weather Advisory until 11pm EDT this evening for MEZ008-009. NH...None. Marine Small Craft Advisory until 1am EDT Thursday for ANZ150. Gale Warning from 1am to noon EDT Thursday for ANZ150. Small Craft Advisory until noon EDT Thursday for ANZ151>154. |
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