Penobscot Bay Marine Forecast
| Today...Nw Winds 10 To 15 Kt. Seas 2 To 4 Ft. Wave Detail: Sw 3 Ft At 6 Seconds. Scattered Showers Early This Morning. |
| Tonight...Nw Winds 10 To 15 Kt With Gusts Up To 20 Kt. Seas 2 To 3 Ft. Wave Detail: Nw 2 Ft At 3 Seconds. |
| Sun...Nw Winds 5 To 10 Kt, Becoming Sw In The Afternoon. Seas Around 2 Ft. |
| Sun Night...Sw Winds Around 10 Kt, Becoming S 15 To 20 Kt After Midnight. Seas 2 To 4 Ft. Wave Detail: S 3 Ft At 4 Seconds. Showers After Midnight. |
| Mon...Sw Winds 15 To 20 Kt With Gusts Up To 30 Kt. Seas 3 To 5 Ft. Wave Detail: S 4 Ft At 6 Seconds. Showers. |
| Mon Night...Sw Winds 10 To 15 Kt, Becoming W 5 To 10 Kt After Midnight. Gusts Up To 25 Kt. Seas 3 To 5 Ft. A Chance Of Showers In The Evening. |
| Tue...Nw Winds Around 5 Kt, Becoming S In The Afternoon. Seas 2 To 4 Ft. |
| Tue Night...S Winds Around 5 Kt. Seas 2 To 3 Ft. A Chance Of Showers. |
| Wed...Se Winds 5 To 10 Kt. Seas 2 To 3 Ft. A Chance Of Showers. |
| Wed Night...S Winds 5 To 10 Kt, Becoming Sw After Midnight. Seas 2 To 4 Ft. A Chance Of Showers. |
| Area Forecast Discussion National Weather Service Gray ME 652am EDT Sat April 11 2026 .WHAT HAS CHANGED... Did increase wind gusts this afternoon with a few gusts up to 40 mph possible. .KEY MESSAGES... 1. Gusty and not as warm today as northwest winds follow an exiting cold front. 2. Turning warmer next week with occasional chances for showers. KEY MESSAGE 1 DESCRIPTION... Winds will have already become northwest by daybreak, quickly shifting following a cold front. These are slated to increase through the morning and afternoon as a mid/upper trough crosses New England. Mixing deepens, up to 850 or 800mb, tapping into the broadening 30 to 35 kt wind field. This would translate to surface gusts of 25 to 35 mph for much of the area. The incoming airmass will be dry, and RH values should fall into the lower 30s along the coast and interior. The combination of gusty winds and lowering RH does create near elevated fire weather conditions towards southern NH and far southern ME. This could be magnified if southern locations skipped on wetting rain from overnight. Momentum transfer settles in the evening, with a less breezy night expected. Light winds should be enough from the surface completely becoming calm, but some valley locations may radiate well during the late night hours. KEY MESSAGE 2 DESCRIPTION... Surface high pressure will slide southeast of the region on Sunday, allowing for developing southerly flow. This will allow high temperatures to reach well into the 50s across most inland locations while areas closer to the shore remain mostly into the 40s. Clouds will increase from southwest to northeast during the course of the day but it should remain dry. Afternoon RH will once again fall into the 20-30% range in many interior locations but with lighter winds than those of Saturday. A surface warm front will lift northward on Sunday night into Monday morning, bringing with it a round of showers. The highest rainfall amounts look to be across the mountains and towards the Canadian Border with perhaps up to around 0.50" while further to the south, generally between 0.10-0.25" is the most likely outcome. Low temperatures will range from the middle 30s to lower 40s from north to south. A brief lull in showers is possible behind the warm front through mid-day Monday before shower chances increase towards the evening as a cold front drops south. High temperatures into the middle to upper 60s can be expected with a few spots in southern NH approaching 70 degrees. Monday night will be mild with lows into the 50s as any lingering showers become confined to the mountains. A mainly dry and even warmer day is likely on Tuesday as an H5 s/wv ridge axis crests overhead. High temperatures into the lower to middle 70s appear likely away from the immediate coast and south of the mountains. Rain chances will then increase once again Tuesday night into Wednesday as a series of fronts cross the area. Temperatures are forecast to remain above average through the remainder of the week with scattered showers possible at times. Marine A cold front passes over the waters through this morning with winds shifting NW. Winds and seas will be enough for SCA (Small Craft Advisory) to continue through the morning. But, the offshore wind direction should begin to knock down greater wave heigheights by early afternoon. Winds and seas should remain below SCA (Small Craft Advisory) criteria through Sunday with S flow. S-SW winds will then increase Sunday night into Monday with SCA (Small Craft Advisory) conditions likely with a low potential for gales outside of the bays through Monday night. Winds will decrease Tuesday through the middle of the week while remaining mainly out of the S with gusts up to around 20 kts at times. NOAA Gray/Portland ME Office - Watches - Warnings - Advisories ME...None. NH...None. Marine Small Craft Advisory until 2pm EDT this afternoon for ANZ150- 152-154. |
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