East of Ipswich Bay and the Stellwagen Bank Marine Sanctuary Marine Forecast
| Today...E Winds 5 To 10 Kt. Seas 2 To 3 Ft. Wave Detail: E 3 Ft At 5 Seconds And E 2 Ft At 10 Seconds. |
| Tonight...E Winds Around 5 Kt, Becoming N Around 5 Kt After Midnight. Seas 2 To 4 Ft. Wave Detail: E 4 Ft At 7 Seconds And Se 1 Foot At 4 Seconds. Patchy Fog. A Chance Of Showers. Vsby 1 To 3 Nm. |
| Mon...W Winds 5 To 10 Kt, Increasing To 10 To 15 Kt With Gusts Up To 20 Kt In The Afternoon. Seas 3 To 5 Ft. Wave Detail: E 5 Ft At 7 Seconds And Sw 2 Ft At 13 Seconds. |
| Mon Night...Nw Winds 15 To 20 Kt With Gusts Up To 30 Kt. Seas 4 To 5 Ft. Wave Detail: Nw 4 Ft At 5 Seconds And E 4 Ft At 8 Seconds. |
| Tue...Nw Winds 15 To 20 Kt, Becoming W 10 To 15 Kt In The Afternoon. Gusts Up To 25 Kt. Seas 3 To 5 Ft. Wave Detail: Nw 4 Ft At 5 Seconds And E 3 Ft At 8 Seconds. |
| Tue Night...W Winds 5 To 10 Kt. Seas 2 To 3 Ft. Wave Detail: Nw 3 Ft At 5 Seconds And E 2 Ft At 8 Seconds. |
| Wed Through Thu Night...W Winds 10 To 15 Kt With Gusts Up To 20 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. |
| Area Forecast Discussion National Weather Service Boston/Norton MA 415am EDT Sunday Oct 4 2026 .WHAT HAS CHANGED... No significant changes to the forecast. .KEY MESSAGES... - Mostly pleasant conditions on tap today until scattered showers move in later this afternoon and linger through the night. - A sharp temperature drop is then expected for the start of the week followed by a return to dry, fall-like conditions. KEY MESSAGE 1...Mostly pleasant conditions on tap today until scattered showers move in later this afternoon and linger through the night. High pressure sitting over Maine will push into the Canadian Maritimes today, lending clear skies and cooler temperatures in the mid to low 60s for most of the day. A weak low then pushes east off the DelVarVa coast, bringing chances for showers to southern New England into the afternoon and overnight hours. Most of the latest guidance suite is indicating this will be a scattered event, with the heaviest rain bands staying offshore; however, the NAMNST and HREF are the most aggressive, not only indicating more of a stratiform rain, but in bringing some heavier bands inland. Highest confidence in heaviest rainfall remains along the south coast, Cape, and Islands, especially after 7PM and through the overnight hours. KEY MESSAGE 2...A sharp temperature drop is then expected for the start of the week followed by a return to dry, fall-like conditions. A deepening low is expected to track east across the James Bay and into Quebec Monday with a strong high pressures system over the Great Lakes following on its heels for the start of the work week. A significantly cooler airmass sinks south into New England, with the latest guidance indicating the 540mb line sinking well into northern New England, possibly as far south as southern NH, by early Tuesday morning. 850mb temperatures likely drop to near or just below 0C by Tuesday morning. Most guidance also suggests 925mb temps drop to as low at +1C or +2C. This would support surface highs near 60 degrees with nighttime lows possibly falling into the 30s through Wednesday. A brief warm-up to the low 70s may be possible late week as the high pushes east Thursday. Otherwise, prolonged west-southwest flow will mark the return of drier conditions and seasonable temperatures to southern New England for the end of the week. Marine Forecaster Confidence Levels... Low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent. Through Monday...High confidence. Calm conditons continue through the first half of Sunday. High pressure located near the Great Lakes tracks east- northeast across northern New England Sunday as weak low pressure develops near the Mid- Atlantic coast Sunday afternoon, then tracks northeast toward southern New England Sunday night. Seas are generally 2-4 feet through much of Sunday, though build to 5+ feet across the outer, ocean waters Sunday night. East to northeast winds are generally 10-15 knots, with gusts increasing to 20-25 knots Monday. SCA (Small Craft Advisory) will likely be needed for Monday night into Tuesday. Outlook /Monday Night through Thursday/... Monday Night: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Areas of rough seas. Tuesday: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Seas up to 5 ft. Tuesday Night: Winds less than 25 kt. Seas locally approaching 5 ft. Wednesday through Thursday: Winds less than 25 kt. NOAA Boston MA Office: Watches - Warnings - Advisories CT...None. MA...None. RI...None. Marine None. |
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