Stonington ME to Port Clyde ME Marine Forecast
| Rest Of Tonight...S Winds Around 5 Kt. Seas Around 2 Ft. |
| Wed...S Winds 5 To 10 Kt. Seas Around 2 Ft. Wave Detail: Sw 2 Ft At 3 Seconds. |
| Wed Night...Sw Winds 5 To 10 Kt, Becoming E After Midnight. Seas Around 2 Ft. Wave Detail: Sw 2 Ft At 4 Seconds. |
| Thu...E Winds Around 5 Kt. Seas Around 2 Ft. |
| Thu Night...S Winds 5 To 10 Kt, Becoming Sw After Midnight. Seas Around 2 Ft. Wave Detail: S 2 Ft At 4 Seconds. Showers. |
| Fri...Nw Winds 10 To 15 Kt. Seas 2 To 3 Ft. Wave Detail: W 2 Ft At 4 Seconds. A Chance Of Showers In The Morning. |
| Fri Night...N Winds 15 To 20 Kt, Diminishing To 10 To 15 Kt After Midnight. Seas 2 To 3 Ft. |
| Sat...N Winds 10 To 15 Kt With Gusts Up To 25 Kt, Becoming Sw 5 To 10 Kt In The Afternoon. Seas 2 To 3 Ft. |
| Sat Night...Sw Winds 5 To 10 Kt. Seas Around 2 Ft. |
| Sun...S Winds 5 To 10 Kt. Seas Around 2 Ft. A Chance Of Showers. |
| Sun Night...S Winds 5 To 10 Kt, Becoming Nw After Midnight. Seas Around 2 Ft. A Chance Of Showers. |
| Area Forecast Discussion National Weather Service Gray ME 230am EDT Wednesday September 16 2026 .WHAT HAS CHANGED... No significant changes with this forecast update. .KEY MESSAGES... 1. A stray shower is possible through morning today, but otherwise fair weather expected through tonight. 2. Lower confidence chances of rain Thursday and again to end the weekend, with near to below normal temperatures expected. KEY MESSAGE 1 DESCRIPTION... A warm front will continue to limp north thru the forecast area. Mid to high level cloudiness is likely to linger north of that boundary thru sunrise. That will keep things warmer than low temps yesterday. I do think that despite some clouds, radiation fog should still develop in the major river valleys by sun up. The earlier surge of warm advection rain/showers that tried to enter the forecast area ended up being primarily virga. Any showers moving east out of central and North Country New York will also struggle against dry air. So I may favor sprinkles over measurable precipitation in that case. In the warm sector today temps will surge well into and thru the 70s in some cases. KEY MESSAGE 2 DESCRIPTION... Over the last 24 hours ensemble guidance has shifted pretty sizable way on rain chances for the remainder of the week. The two events have largely flipped, with Thu trending towards more Quantitative Precipitation Forecast and Sunday trending drier. This is generally true of both the GEFS and ECMWF (European Centre for Medium-Range Weather Forecasts) Ens, but the GEFS remains somewhat bearish on Thu still as well. Looking at the latest NBM guidance, it has come up for Thu, including introducing some categorical PoP. It has also backed off Probability of Precipitation over the weekend. This is my preferred shift to the forecast, so at this time no changes to the NBM are planned. One of the reasons that the weekend rain chances have backed off is that guidance is coming in with stronger high pressure building down from central Canada. This is suppressing rain and the surface boundary south. ECMWF EFI is favoring Fri to be breezy behind a cold front as the high initially builds in. That will set up both Sat and Sunday to be cooler days. Right now NBM temps are 5 to 10 degrees cooler than normal during the day. Overnight will also be cool, and given the time of year that means some frost potential across the northern valleys. Marine Winds and seas are expected to remain below SCA (Small Craft Advisory) thresholds through the remainder of the week and likely into the weekend. The cold frontal passage Fri will bring some breezy conditions to the waters and maybe a few 25 kt gusts into early Sat however. NOAA Gray/Portland ME Office - Watches - Warnings - Advisories ME...None. NH...None. Marine None. |
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