Stonington ME to Port Clyde ME Marine Forecast
| This Afternoon...N Winds 5 To 10 Kt. Seas 6 To 7 Ft. Wave Detail: S 7 Ft At 9 Seconds. |
| Tonight...Ne Winds 10 To 15 Kt With Gusts Up To 25 Kt. Seas 4 To 6 Ft. Wave Detail: S 6 Ft At 9 Seconds. A Chance Of Rain, Snow And Sleet After Midnight. |
| Thu...Ne Winds 15 To 20 Kt With Gusts Up To 25 Kt. Seas 3 To 5 Ft. Wave Detail: E 4 Ft At 5 Seconds And S 4 Ft At 9 Seconds. A Chance Of Snow And Sleet In The Morning. |
| Thu Night...E Winds 10 To 15 Kt With Gusts Up To 25 Kt. Seas 3 To 5 Ft. Wave Detail: Se 4 Ft At 7 Seconds. A Chance Of Snow And Sleet In The Evening. A Chance Of Rain. |
| Fri...Se Winds 15 To 20 Kt, Becoming S 10 To 15 Kt In The Afternoon. Seas 3 To 5 Ft. Wave Detail: Se 5 Ft At 7 Seconds. A Chance Of Rain. |
| Fri Night...Sw Winds 15 To 20 Kt With Gusts Up To 30 Kt. Seas 4 To 6 Ft. Wave Detail: S 6 Ft At 7 Seconds. |
| Sat...N Winds 15 To 20 Kt, Becoming Ne In The Afternoon. Gusts Up To 30 Kt. Seas 4 To 6 Ft, Subsiding To 3 To 4 Ft In The Afternoon. |
| Sat Night...E Winds 15 To 20 Kt With Gusts Up To 30 Kt. Seas 4 To 6 Ft. A Chance Of Showers In The Evening, Then Showers Likely After Midnight. |
| Sun...S Winds 20 To 25 Kt With Gusts Up To 35 Kt. Seas 6 To 9 Ft. Showers. |
| Sun Night...Sw Winds 20 To 25 Kt, Becoming W 15 To 20 Kt After Midnight. Gusts Up To 35 Kt. Seas 7 To 10 Ft. Showers Likely, Mainly In The Evening. |
| Area Forecast Discussion National Weather Service Gray ME 232pm EDT Wednesday April 1 2026 .WHAT HAS CHANGED... PoPs were increased for southern zones tonight as confidence is higher that precipitation will be able to enter the region as a stalled frontal boundary moves back northward. The forecast for Thursday night into Friday has remained steady as some uncertainty still exists in coverage. The bottom line is that mixed precipitation looks more widespread, but light. .KEY MESSAGES... 1. A frontal boundary begins moving back north tonight bringing rain to southern New Hampshire and far Southern Maine through Thursday morning. 2. Low pressure enters the region Thursday night bringing widespread precipitation. While amounts look lighter than this previous event, mixed precipitation looks more widespread. Some slippery travel is possible Thursday night and Friday morning, but the light amounts should keep impacts minimal 3. Temperatures remain above normal over the weekend with rain likely from Saturday night into Sunday night. 4. Drier weather returns for early next week with temperatures returning to near or slightly below normal. KEY MESSAGE 1 DESCRIPTION... After a drier day, southern New Hampshire and southwestern Maine have a chance to get back into some precipitation tonight into early Thursday morning as the frontal boundary currently stalled to our south begins to move northward. This will be mostly rain, as low temperatures bottom out around 33-35F in this area. However I did allow for some wintry mix on the northern edge of the precipitation shield, basically a line from Lebanon, NH to Portland, where some snow flakes and/or sleet may begin to mix in if they drop down to 31-32F. Models are in good agreement that the majority of Thursday ends up dry after the southern precipitation tapers off. Strong high pressure noses in as it passes to our north leading to some clearer skies in the northern half of the area. Southern areas will have a harder time shaking the clouds and the result is going to be a pretty uniform day temperature wise, with it ending up in the upper 30s and 40s areawide. KEY MESSAGE 2 DESCRIPTION... Widespread precipitation enters the region again Thursday night as low pressure approaches from the west. While Quantitative Precipitation Forecast looks much lighter than what we just previously saw with this early week event, mixed precipitation look like it could be more widespread. Strong high pressure situating itself our Northeast will continue streaming cold air into the area dropping temperatures to right around the freezing mark area wide. Aloft warm southwesterly flow increases as a 500 mb ridge builds; a recipe for mixed precipitation. Hi-res guidance has some differences in what exactly this will look like, but confidence is increasing in the coastal plain seeing mainly plain rain and drizzle. The remainder of the area could see more of a mixed bag or just straight freezing rain and drizzle. The HRRR (High-Resolution Rapid Refresh) is in the camp of a more steady precipitation event Thursday night into Friday, but the NAMNest is favoring more showery/drizzly activity with some steadier bouts in the north during the day Friday. The HRRR (High-Resolution Rapid Refresh) is also colder Thursday night which would bring some light snow accumulations to the western Maine mountains and northern New Hampshire at onset. With all this uncertainty, I am ok rolling with the NBM for now until it is clearer what we will be dealing with coverage wise. Either way, the light Quantitative Precipitation Forecast should minimize impacts outside of potentially slippery travel Thursday night and Friday. Could see Winter Weather Advisories needed eventually for northern zones again, but will kick it to the next shift to see if models can come into better agreement on coverage. KEY MESSAGE 3 DESCRIPTION... A cold front crosses through New England Friday evening into Friday night with little if any precipitation expected as it passes, except for some upslope rain/snow showers in the mountains. There may be patchy fog out ahead of the front, but this should clear up once the west-northwest winds kick in behind the front. 500mb ridge builds briefly overhead Saturday bringing mostly dry conditions to the area for a good chunk of the day. Temperatures overall will run above normal with 50s to 60s in southern NH but cooler in the 40s and 50s in western ME as winds become onshore and allow a quick inland progression of the seabreeze. Later in the day and toward evening, light rain or drizzle is possible with the boundary lifting back north as a warm front. The highest chances for precipitation hold off until Saturday night as the warm front lifts north and then into Sunday-Sunday night as moisture and lift increase ahead of a cold front approaching from the west. Temperature profiles support this as a mostly rain event (except the higher elevations and northern zones could see a wintry mix) with ensembles means from the ECMWF/GFS (Global Forecast System) advertising a 0.25" to 0.50" of Quantitative Precipitation Forecast with this system. Even with clouds and precip, temps on Sunday should be able to reach the 50s-60s in NH and mostly 50s in ME. KEY MESSAGE 4 DESCRIPTION... Global models are in better agreement with the timing of the FROPA with being either Sunday night or early Monday, owing a little more confidence in Monday being cooler, breezy, and drier, except upslope rain or snow showers in the mountains. With the 500mb trough still yet to cross through, there will probably be at least an increase in diurnal cu for areas downstream of the mountains. Ensembles are generally supportive of a strong high pressure building into the Northeast U.S. toward the middle of next week which would bring mostly dry conditions but cooler temperatures...near or slightly below average for early April. Marine Low pressure moving over the waters is keeping wave heigheights elevated, and it looks like this will continue through Thursday afternoon. Winds will generally be northeasterly through this period as high pressure moves into the Canadian Maritimes. Winds then shift through the day Friday, ending up southerly by Friday afternoon, as another system moves into the region. Friday night-Wednesday...A cold front crosses the waters Friday evening into Friday night, with southwest winds out ahead of it gusting to around 25 kt. Winds switch W/NW behind the front but then quickly turn north to east on Saturday with high pressure to the north and east of the waters. These may also contain gusts to SCA (Small Craft Advisory) levels. Flow turns more southerly on Sunday as a cold front approaches from the west with SCA (Small Craft Advisory) gusts likely, but gales are possible. SCA (Small Craft Advisory) conditions continue through at least Sunday night behind the cold front and possible into Monday as winds become W/WNW. High pressure builds in from the west Tuesday into Wednesday. NOAA Gray/Portland ME Office - Watches - Warnings - Advisories ME...None. NH...None. Marine Small Craft Advisory until 6pm EDT Thursday for ANZ150-152- 154. Small Craft Advisory until 8am EDT Thursday for ANZ151. |
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