Marine Weather Net

Buzzards Bay Marine Forecast


THIS AFTERNOON

SW
WINDS
10 - 15
KNOTS

TONIGHT

W
WINDS
10 - 15
KNOTS

TUE

W
WINDS
10 - 15
KNOTS

TUE NIGHT

NW
WINDS
15 - 20
KNOTS

The Marine Weather Forecast In Detail:
ANZ234 Forecast Issued: 104 PM EST Mon Jan 13 2025

This Afternoon...Sw Winds 10 To 15 Kt With Gusts Up To 20 Kt. Seas Around 2 Ft. Wave Detail: Sw 2 Ft At 4 Seconds And Se 1 Foot At 9 Seconds.
Tonight...W Winds 10 To 15 Kt With Gusts Up To 20 Kt. Seas 2 To 3 Ft. Wave Detail: W 3 Ft At 6 Seconds And E 1 Foot At 11 Seconds.
Tue...W Winds 10 To 15 Kt With Gusts Up To 25 Kt. Seas 2 To 3 Ft. Wave Detail: W 3 Ft At 6 Seconds And E 1 Foot At 12 Seconds.
Tue Night...Nw Winds 15 To 20 Kt With Gusts Up To 25 Kt. Seas 3 To 5 Ft. Wave Detail: W 4 Ft At 6 Seconds And E 1 Foot At 12 Seconds.
Wed...Nw Winds 15 To 20 Kt With Gusts Up To 25 Kt. Seas 3 To 5 Ft, Subsiding To 2 To 3 Ft In The Afternoon. Wave Detail: Nw 4 Ft At 6 Seconds And E 1 Foot At 12 Seconds, Becoming N 3 Ft At 5 Seconds And E 1 Foot At 12 Seconds. A Chance Of Light Freezing Spray In The Morning.
Wed Night...Nw Winds 10 To 15 Kt. Gusts Up To 20 Kt In The Evening. Seas 2 To 3 Ft. Wave Detail: N 3 Ft At 5 Seconds And E 1 Foot At 12 Seconds.
Thu Through Fri Night...Sw Winds 10 To 15 Kt. Seas 2 To 3 Ft. Seas Are Reported As Significant Wave Height, Which Is The Average Of The Highest Third Of The Waves. Individual Wave Heights May Be More Than Twice The Significant Wave Height.
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Area Forecast Discussion
National Weather Service Boston/Norton MA
227pm EST Monday Jan 13 2025

Synopsis
Mostly dry weather today with scattered rain/snow showers this afternoon and evening ahead of a cold front. Today will also be briefly milder than normal. Temperatures will then trend below normal Tuesday through Thursday, then modify to near to above normal by Friday into the weekend. Drier weather should prevail most of the workweek, with potential for more unsettled weather by this weekend.

Near Term - Through Tonight
Key Messages... * Mostly dry with scattered rain/snow showers possible this afternoon and evening.

Clouds overspread southern New England with vigor this afternoon ahead of an advancing cold front. This front was still back in central NY and PA, and should move past our region by midnight or so. While accompanied by a modest mid level shortwave, there is not a lot of humidity to work with, especially within the dendritic snow growth region. Upstream observations did show some snow across NY state, with some visibilities as low as 1 statute mile.

Latest runs of the HRRR (High-Resolution Rapid Refresh) and RAP were more aggressive in bringing some rain or snow showers to MA late this afternoon and evening, but am leery due to the large surface dew point depressions. Did introduce a chance for measurable precipitation, but no more than 30%. Will continue to monitor the progress of showers later today, and will adjust as needed.

Clouds a likely here to stay for a while, which will help prevent strong radiational cooling. Expecting low temperatures to be near normal for mid January.

Short Term - Tuesday Through Tuesday Night
Key Messages... * Turning colder and blustery.

Colder air makes more of a push across southern New England during this time period. Low pressure over the Maritimes and a high pressure over the Plains will maintain a persistent W to NW flow. This will begin the trend for below normal temperatures. Becoming much drier, so little chance for precipitation. Ocean- effect showers are possible across the outermost coastal waters.

Long Term - Wednesday Through Sunday
Key Messages:

* Dry with below normal temps Wed-Thurs.

* Temps then modify to slightly above normal levels by Fri into the weekend, but likely to be accompanied by cloud cover.

* Next chance of widespread precipitation not until the weekend?

Details:

Dry weather with a period of below normal temperatures are expected for Wednesday and Thurs with the colder air being reinforced by the eventual passage of northern-stream shortwave trough energy coming out of the Canadian Prairies in central Canada. This airmass does not look to be as cold and also not nearly as windy as last week's shot of cold air; however, we are expecting highs in the mid 20s to near freezing with lows in the single digits to the mid teens. Temperatures then modify by Fri into the weekend as southerly flow increases with near to above normal temperatures (highs mid 30s to low 40s), although it may also be accompanied by a good amt of cloud cover.

Overall this portion of the forecast is generally a dry one. Our next chance for significant precipitation may not arrive until the weekend, as a deep 500 mb trough establishes itself across much of the central/east-central CONUS per consensus in ensemble means. There continue to be some ensemble members which bring weak/sheared-out 500 mb vort energy from the southern Plains states into the mid-Atlantic and Northeast but this is not well agreed upon. Will continue to advertise Chance Probability of Precipitation for timing-dependent snow-to-rain showers Sat and Sunday and then adjust pending trends in the guidance.

Marine
Forecaster Confidence Levels:

Low - less than 30 percent. Medium - 30 to 60 percent. High- greater than 60 percent.

High confidence.

Through Tuesday Night... A cold front moves across the waters overnight, which will bring a windshift to WNW with speeds increasing to around 20-25 kt toward early Tuesday morning. Small Craft Advisories remain in effect for the outer waters during this time.

Outlook /Wednesday through Friday/... Tuesday Night: Strong winds with gusts up to 30 kt. Areas of rough seas.
Wednesday: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Areas of rough seas. Chance of freezing spray.

Wednesday Night: Winds less than 25 kt. Areas of seas approaching 5 ft.
Thursday: Winds less than 25 kt. Seas locally approaching 5 ft.

Thursday Night through Friday: Winds less than 25 kt. Areas of seas approaching 5 ft.

NOAA Boston MA Office: Watches - Warnings - Advisories
CT...None. MA...None. RI...None.

Marine
Small Craft Advisory from 6pm Tuesday to 7am EST Wednesday for ANZ235-237. Small Craft Advisory from 1am Tuesday to 7am EST Wednesday for ANZ250. Small Craft Advisory until 7am EST Wednesday for ANZ254>256.