East of Ipswich Bay and the Stellwagen Bank Marine Sanctuary Marine Forecast
| Today...W Winds 5 To 10 Kt, Becoming Sw This Afternoon. Seas 2 To 4 Ft. Wave Detail: Se 3 Ft At 8 Seconds And W 2 Ft At 4 Seconds. |
| Tonight...Sw Winds 5 To 10 Kt. Seas 2 To 3 Ft. Wave Detail: Se 3 Ft At 8 Seconds And Sw 1 Foot At 3 Seconds. |
| Wed...Sw Winds 5 To 10 Kt. Seas Around 2 Ft. Wave Detail: Se 2 Ft At 7 Seconds And Sw 1 Foot At 3 Seconds. |
| Wed Night...Sw Winds 5 To 10 Kt. Seas Around 2 Ft. Wave Detail: Se 2 Ft At 7 Seconds And S 1 Foot At 3 Seconds. |
| Thu And Thu Night...Sw Winds 10 To 15 Kt With Gusts Up To 20 Kt. Seas Around 2 Ft. Wave Detail: Se 2 Ft At 7 Seconds And Sw 1 Foot At 3 Seconds. |
| Fri Through Sat Night...Sw Winds 5 To 10 Kt. Seas Around 2 Ft. Wave Detail: Se 2 Ft At 7 Seconds And Sw 1 Foot At 3 Seconds. 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 439am EDT Tuesday August 4 2026 .WHAT HAS CHANGED... Forecast remains on track. .KEY MESSAGES... - Dry and seasonable today, but summer heat and humidity returns Wednesday through the weekend. Diurnal scattered thunderstorms possible each day. KEY MESSAGE 1...Dry and seasonable today, but summer heat and humidity returns Wednesday through the weekend. Diurnal scattered thunderstorms possible each day. A weak high pressure builds in today in the wake of a cold front, bringing clearing skies and dry weather with high temperatures in the low to mid 80s. Dew points begin to surge into the mid 70s Wednesday, peaking Thursday and Friday, and linger into the weekend as a Bermuda high builds in across the western Atlantic Ocean. Prolonged southerly flow will advect those warmer dew points into southern New England through the second half of the week, leading to near oppressive humidity at times. 925mb temperatures surge to near +22C each afternoon this week, leading to high temps 85-90 every day. Combined with dew points of 72-76, heat headlines are being considered through the second half of the week and possibly into the weekend. Regarding the thunderstorm potential later in the week... a few weak, upper level disturbances passing through New England combining with the high heat/humidity and just enough instability will likely be enough to Probability of Precipitation a few diurnal showers/thunderstorms each day Thursday through the weekend. PWATs (Precipitable Waters) anywhere from 1.75" to 2.10" will also provide enough potential for storms to be water loaded with torrential downpours. Marine Forecaster Confidence Levels... Low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent. SCA's (Small Craft Advisories) continue for the outer waters as seas slowly subside throughout the day. Winds generally below 10 kts, except a few gusts up to 18 kts possible across the northern waters later this afternoon. A Rip Current Statement remains in effect along the southern coastal and Island communities today as rough seas and longer period swells slowly subside. Outlook /Wednesday Night through Saturday/... Wednesday Night through Thursday Night: Winds less than 25 kt. Areas of seas approaching 5 ft. Friday: Winds less than 25 kt. Seas up to 5 ft. Friday Night: Winds less than 25 kt. Seas up to 5 ft. Slight chance of rain showers. Saturday: Winds less than 25 kt. Areas of seas approaching 5 ft. NOAA Boston MA Office: Watches - Warnings - Advisories CT...None. MA...High Risk for Rip Currents through this evening for MAZ020-023-024. RI...High Risk for Rip Currents through this evening for RIZ006>008. Marine Small Craft Advisory until 2pm EDT this afternoon for ANZ235- 237-250-254. Small Craft Advisory until 8pm EDT this evening for ANZ255- 256. |
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