Marine Weather Net

Penobscot Bay Marine Forecast


TODAY

W
WINDS
5 - 10
KNOTS

TONIGHT

NW
WINDS
5 - 10
KNOTS

THU

N
WINDS
5 - 10
KNOTS

THU NIGHT

N
WINDS
5 - 10
KNOTS

The Marine Weather Forecast In Detail:
ANZ151 Forecast Issued: 359 AM EDT Wed Sep 28 2022

Today...W Winds 5 To 10 Kt, Becoming Sw Late. Seas 2 To 3 Ft. Areas Of Fog Early This Morning, Then Patchy Fog Late This Morning. Vsby 1 Nm Or Less This Morning.
Tonight...Nw Winds 5 To 10 Kt. Seas 2 To 3 Ft.
Thu...N Winds 5 To 10 Kt. Seas 2 To 3 Ft.
Thu Night...N Winds 5 To 10 Kt With Gusts Up To 20 Kt. Seas 2 To 3 Ft.
Fri...N Winds 5 To 10 Kt, Becoming Sw In The Afternoon. Seas Around 2 Ft.
Fri Night...Sw Winds 5 To 10 Kt. Seas Around 2 Ft.
Sat...W Winds 5 To 10 Kt. Seas 1 Foot Or Less.
Sat Night...W Winds Around 5 Kt, Becoming N After Midnight. Seas 1 Foot Or Less, Then Around 2 Ft After Midnight.
Sun...Ne Winds 10 To 15 Kt. Seas Around 2 Ft.
Sun Night...Ne Winds 10 To 15 Kt. Seas Around 2 Ft In The Evening, Then 1 Foot Or Less.
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Area Forecast Discussion
National Weather Service Gray ME
411am EDT Wednesday September 28 2022

Synopsis
A cold front crosses the area today, bringing a few afternoon showers. Drier weather and seasonable temps prevail behind the front into the weekend with high pressure building in from the west and settling across the Northeast. The remains of TC Ian may pass south of the region early next week.

Near Term - Today
A cold front will mix through New England today, the culmination of the gradual, several-day push of a broad upper level trough that has been parked over eastern NOAM. While the cold air advection will be gradual over the next couple days... the cold front will be felt today with lower dewpoints, a westward wind shift, and a few light rain showers. Probability of Precipitation continues to be highest across the mountains, where scattered, light rain showers are expected... but a few isolated showers could track through the foothills and toward the coast in spite of dry, well-mixed low-levels. For temperatures, strong mixing today will allow for nice warming (and drying)... with highs topping out in the 60s to around 70. With dew points in the 40s and 50s... today will feel quite comfortable with plenty of sun outside of the mountains.

Short Term - Tonight Through Thursday
The main push of cool, northwesterly flow comes tonight into tomorrow as a thermal trough pushes across the International Border and into New England. With warm Atlantic ridging holding firm... it doesn't make much inroads, however temperatures will still be noticeably cooler tonight and tomorrow. For tonight, lingering upslope showers rain showers will diminish, but clouds will likely still cling to the moutnains. Low temperatures will range from near 40 at the international border... near 50 at the coast, though any place that decouples likely cools closer to the 40 mark.

Thursday will be quite representative of the season... with a light northwesterly breeze and temperatures in the 50s and 60s. Stratocu over the mountains will gradually lift and scatter as drier air pours in through the day, with mostly sunny skies elsewhere. Lower dew points in the upper-30s to mid-40s will set the stage for a chilly night.

Long Term - Thursday Night Through Tuesday
Overview... An expansive ridge of Canadian high pressure settles across the Northeast by the end of the week and dominates the weather pattern through the weekend and into early next week. This brings an extended period of dry weather and seasonable temperatures into early next week. It also keeps what will be the remnants of Hurricane Ian by early next south of the area until at least Tuesday.

Details... As high pressure settles overhead Thursday night, good radiational cooling conditions are expected to allow temps to fall into the low to mid 30s across northern areas and favorable cooler valley locations. Frost is likely across the northern valleys, but many of these spots have already seen at least one frost so far this season. Some of these areas may see their first freeze however. Scattered frost has been observed elsewhere so far this season, but a few more spots may see their first Thursday night, so frost headlines are possible tomorrow night.

The high remains in control through the weekend, bringing highs primarily in the 60s during the day and lows in the 30s and 40s at night through the weekend. By early next week a gradual cooling trend is possible as a weak cold front brushes the area, but the bulk of the cooler air will likely remain north of the area.

After making landfall in Florida, Hurricane Ian is expected to make it's way northward into the Carolinas by Friday night and weaken into a remnant low by the weekend across the southern Appalachians. Most of the moisture from this system will be suppressed to the south by the high pressure center across New England, but some high clouds will likely manage to stream northward into our area through the weekend. By early next week some moisture from the system may get drawn northward by the approaching cold front to bring the chance for a few showers, but even this looks like a fairly low chance at this point.

Marine
Short Term
Westerly to southwesterly flow continues over the waters today with seas around 4-5 ft toward the east and closer to 2-3 ft toward the west. A cold front crosses this evening with winds strengthening to 10-20 kts out of the northwest... diminishing slightly tomorrow as seas remain around 2-4 ft on average.

Long Term
Generally tranquil conditions are expected through the weekend as high pressure settles across the waters. SCA (Small Craft Advisory) conditions are possible early next week as a strengthening northeasterly flow develops across the Gulf of Maine as a frontal boundary moves across the waters.

NOAA Gray/Portland ME Office - Watches - Warnings - Advisories
ME...None. NH...None.

Marine
None.