East of Ipswich Bay and the Stellwagen Bank Marine Sanctuary Marine Forecast
| Rest Of Tonight...W Winds 15 To 20 Kt With Gusts Up To 30 Kt. Seas 3 To 5 Ft. Wave Detail: Sw 4 Ft At 4 Seconds And Se 3 Ft At 6 Seconds. |
| Sat...Nw Winds 10 To 15 Kt With Gusts Up To 20 Kt, Becoming Ne 5 To 10 Kt In The Afternoon. Seas 2 To 4 Ft. Wave Detail: W 3 Ft At 4 Seconds And Se 2 Ft At 7 Seconds. |
| Sat Night...E Winds 15 To 20 Kt With Gusts Up To 25 Kt. Seas 2 To 4 Ft. Wave Detail: Se 4 Ft At 6 Seconds And Nw 1 Foot At 3 Seconds. Rain. Vsby 1 To 3 Nm. |
| Sun...Nw Winds 10 To 15 Kt, Increasing To 15 To 20 Kt With Gusts Up To 30 Kt In The Afternoon. Seas 3 To 4 Ft. Wave Detail: Se 4 Ft At 7 Seconds And W 2 Ft At 3 Seconds. A Chance Of Rain. Vsby 1 To 3 Nm. |
| Sun Night...W Winds 20 To 25 Kt, Increasing To 25 To 30 Kt After Midnight. Gusts Up To 45 Kt. Seas 5 To 7 Ft. Wave Detail: W 7 Ft At 5 Seconds And E 2 Ft At 6 Seconds. A Chance Of Rain In The Evening. |
| Mon...W Winds 25 To 30 Kt With Gusts Up To 40 Kt, Diminishing To 20 To 25 Kt With Gusts Up To 30 Kt In The Afternoon. Seas 5 To 7 Ft. Wave Detail: W 7 Ft At 7 Seconds And Se 2 Ft At 10 Seconds. |
| Mon Night...W Winds 15 To 20 Kt With Gusts Up To 25 Kt. Seas 3 To 5 Ft. |
| Tue Through Wed...Sw Winds 15 To 20 Kt With Gusts Up To 30 Kt. Seas 3 To 4 Ft. |
| Wed Night...Sw Winds 10 To 15 Kt With Gusts Up To 20 Kt. Seas 3 To 5 Ft. A Chance Of Showers. 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. |
| Area Forecast Discussion National Weather Service Boston/Norton MA 223am EST Sat Jan 10 2026 .WHAT HAS CHANGED... No significant forecast changes. A Winter Weather Advisory has been issued for the Berkshires and northern Worcester Hills due to the threat of freezing rain. Confidence increasing in a period of gusty NW winds of 35 to 50 mph Sunday night into early Monday. Wind Advisories remain possible for the high terrain. .KEY MESSAGES... - Widespread rain arrives late this afternoon, areas of freezing rain for locations at or above 1,000 feet in northern and western Massachusetts. Becoming dry and breezy on Sunday. - Becoming windy & turning colder Sunday night into Monday with a period of NW wind gusts of 35 to 50 mph possible later Sunday night. Low risk for a brief snow squall too. - Mainly dry conditions early next week, trending more unsettled by mid-week with periodic showers and a potential coastal system for Friday. KEY MESSAGE 1...Widespread rain arrives late this afternoon, areas of freezing rain for locations at or above 1,000 feet in northern and western Massachusetts. Becoming dry and breezy on Sunday. With a quasi-stationary front south of New England today and an area of high pressure to the north, much of the daylight hours remain dry and somewhat mild in the low to mid-40s. The sub-tropical ridge over the southeast CONUS shifts NE with an robust S/SW low-level jet shifting the front back north late this afternoon. Riding along this front is a developing area of low pressure, adding to the assent needed to ring out these above normal PWATs. PWATs (Precipitable Waters) between 1.0" and 1.2" across the coastal plain, with lower values across the interior at 0.8". Still, plenty of moisture to be had as this front pushes north. Rain totals are generally in the range of 0.3" and 0.5" N and W of I-95, areas S and E are between 0.6" and 1.0", with locally higher amounts of 1.5" mainly across the outer Cape and Islands. While majority of the region has rain, interior areas have freezing rain at or above 1,000 feet. Although surface temperatures may initially be marginally above freezing, forecast wet bulb temperatures near 0C indicate evaporative cooling will quickly lower surface temperatures to freezing once precipitation begins. Given a well defined warmnose between 900mb and 700mb, and only a shallow subfreezing layer near the surface, freezing rain appear more likely than sleet. A Winter Weather Advisory is issues for two areas across our region. First, eastern slopes of the Berkshires, with ice accumulations between 0.1" and 0.2". Second area, northern Worcester Hills, where less ice accumulation is anticipated, between 0.01" and 0.1". Both of these areas are under an advisory between 5pm today and 10am Sunday. Plan on slippery road conditions. Drying late Sunday morning into Sunday afternoon as low PWATs (Precipitable Waters) advect into the region. Will notice a shift in the wind due to the surface low passing, going from E on Saturday, to W on Sunday. Gusts begin to increase in the late afternoon, becoming strong overnight. Will have to watch out for a few Cold Air Advection snow showers or a snow squall. More on that in the next key message. KEY MESSAGE 2...Becoming windy & turning colder Sunday night into Monday with a period of NW wind gusts of 35 to 50 mph possible later Sunday night. Low risk for a brief snow squall too. Saturday's low pressure system will be exited over the Canadian Maritimes by Sunday night continuing to deepen while a cold front moves through southern New England. This will result in a fairly tight pressure gradient developing across the region. Strong Cold Air Advection should help with the mixing down of the higher gusts aloft supporting gusty northwest winds Sunday night into Monday. The LLJ in place will be moderate in magnitude around 40-50 kts. Model soundings reinforce the gust potential showing a deep well-mixed layer. All appears supportive of gusts 35-45 mph with the higher gusts in that range over the high terrain and Cape/Islands. Can't rule out a gust to 50 mph for the Berkshires which is in the 75th percentile of the NBM. With all that said, it is possible we briefly reach Wind Advisory criteria in areas with the highest probabilities for the Berkshires, Worcester Hill, and Cape/Islands. Confidence is increasing in the need for a short-lived advisory for at least the Berkshires. Stay tuned for updates on any wind headlines. The strongest gusts look to be most likely in the Sunday night to early Monday timeframe. We still continue to have a low risk for a weak snow squall or two Sunday night with the cold frontal passage and arrival of the gusty winds. Steepening lapse rates and residual mid-moisture in place should create a sufficient environment, although we are lacking in the surface moisture which is why coverage of any squally showers will likely be low. This potential is echoed by some low values in the snow squall parameter model fields. Temperatures overnight drop into the 20s for most places Sunday night and with the added strong winds will bring wind chills into the single digits and teens. KEY MESSAGE 3...Mainly dry conditions early next week, trending more unsettled by mid-week with periodic showers and a potential coastal system for Friday. Looking ahead to next week, the pattern aloft stays on the active side with a series of shortwave troughs/disturbances moving through the flow in the eastern portion of the CONUS. A weak shortwave drops south from the Great Lakes late Monday; however, it will be fairly moisture starved resulting in mainly dry conditions. A brief period of warming is likely Tuesday/Wednesday as a mid-level ridge moves through. A few scattered rain/snow showers are possible late Tuesday into early Wednesday with as a piece of weak shortwave energy moves through. There is general agreement among ensemble guidance with the upper pattern transitioning to deep troughing across the northeast late week. This should bring a return to colder temperatures (around/slightly below normal) starting Thursday. Still quite a ways out, but we are watching the potential for a coastal system for Friday. There is large amount of spread among ensemble members/solutions in the track of the surface low pressure. A chunk of solutions favors a well offshore track; however, there are solutions that also show a track closer to shore which would yield a mix precipitation and/or snow depending on the temperatures/exact track. As we head into next week, deterministic/ensemble guidance should come into better agreement in the details. Just something to watch for now. Marine Forecaster Confidence Levels... Low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent. Today through Sunday... High confidence. A quasi-stationary frontal boundary sits south of the islands this morning, but will shift north late morning into the afternoon. NE wind early, less than 10 knots, then E late afternoon 10 to 15 knots, gusts 18 to 22 knots. Rain becomes widespread from south to north, starting 2pm to 4pm across the southern waters and 6pm to 8pm across the eastern waters. Rain ends early Sunday, wind shifts to the NNW then W by Sunday afternoon, with gusts 20 to 25 knots. Strong winds anticipated overnight, Gale Watch in effect for all waters Sunday night though Monday morning. Outlook /Sunday Night through Wednesday/... Sunday Night: Moderate risk for gale force winds with gusts up to 45 kt. Rough seas up to 11 ft. Chance of rain, slight chance of snow. Monday: Low risk for gale force winds with gusts up to 35 kt. Areas of rough seas. Monday Night through Tuesday: Moderate risk for Small Craft Advisory winds with gusts up to 25 kt. Local rough seas. Tuesday Night: Strong winds with areas of gusts up to 30 kt. Areas of seas approaching 5 ft. Slight chance of rain showers. Wednesday: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Local rough seas. Slight chance of rain showers. NOAA Boston MA Office: Watches - Warnings - Advisories CT...None. MA...Winter Weather Advisory from 5pm this afternoon to 10am EST Sunday for MAZ002-004-008-009-026. RI...None. Marine Gale Watch from Sunday evening through Monday morning for ANZ230>237-251. Small Craft Advisory until 7am EST this morning for ANZ250- 254>256. Gale Watch from Sunday evening through Monday afternoon for ANZ250-254>256. |
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