Rhode Island Sound Marine Forecast
| Today...Sw Winds 20 To 25 Kt, Diminishing To 15 To 20 Kt This Afternoon. Gusts Up To 30 Kt. Seas 5 To 8 Ft. Wave Detail: S 8 Ft At 9 Seconds And Sw 2 Ft At 5 Seconds. Patchy Fog. A Chance Of Showers. Vsby 1 To 3 Nm. |
| Tonight...Ne Winds 10 To 15 Kt, Increasing To 15 To 20 Kt After Midnight. Gusts Up To 25 Kt. Seas 4 To 6 Ft. Wave Detail: S 6 Ft At 8 Seconds And Ne 3 Ft At 3 Seconds. Patchy Fog. Showers Likely. Vsby 1 To 3 Nm In The Evening. |
| Thu...Ne Winds 20 To 25 Kt. Seas 3 To 5 Ft. Wave Detail: Ne 4 Ft At 5 Seconds And S 4 Ft At 7 Seconds. Patchy Fog. Showers Likely In The Morning. A Chance Of Showers In The Afternoon. |
| Thu Night...Ne Winds 15 To 20 Kt, Becoming E 10 To 15 Kt After Midnight. Seas 2 To 4 Ft. Wave Detail: Ne 4 Ft At 5 Seconds And S 2 Ft At 7 Seconds. Patchy Fog In The Evening. |
| Fri...Se Winds 5 To 10 Kt, Becoming Sw 15 To 20 Kt In The Afternoon. Seas 2 To 4 Ft. Wave Detail: Se 3 Ft At 6 Seconds. |
| Fri Night...Sw Winds 15 To 20 Kt, Increasing To 20 To 25 Kt After Midnight. Seas 4 To 6 Ft. Wave Detail: Sw 5 Ft At 6 Seconds And S 5 Ft At 10 Seconds. |
| Sat And Sat Night...Sw Winds 15 To 20 Kt, Becoming Se. Gusts Up To 25 Kt. Seas 3 To 5 Ft. |
| Sun...Sw Winds 20 To 25 Kt With Gusts Up To 35 Kt. Seas 4 To 6 Ft. A Chance Of Showers. |
| Sun Night...W Winds 25 To 30 Kt. Seas 5 To 7 Ft. Showers Likely. 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 746am EDT Wednesday April 1 2026 .WHAT HAS CHANGED... Updated Aviation section. .KEY MESSAGES... - Another day of large temperature swings. Backdoor front retreats north early this morning then drops back south this afternoon. - Colder day Thursday then a milder but unsettled pattern prevails over the weekend. KEY MESSAGE 1...Another day of large temperature swings. Backdoor front retreats north early this morning then drops back south this afternoon. Backdoor front has stalled its progress southward and was located roughly from Orange, MA to Providence, RI and the immediate south coast of MA. E/NE winds in cool sector have brought in low clouds and patchy fog and much cooler temperatures in upper 30s and 40s, while to the west southerly winds prevail along with temperatures in 60s. Severe storms that moved through central and eastern NY have slowly weakened as they encountered a less favorable airmass over southern New England, though the leading edge of the activity did show some decent signals for wind damage over western MA which prompted earlier warnings and resulted in sporadic wind damage. After an initial band of showers passes through the region early this morning, the front will gradually retreat northward as low pressure tracking across northern New England induces more of a S/SW flow. This will bring a warmup across most of region by sunrise despite cloud cover and scattered showers, and we may see some breaks of sunshine later this morning into early afternoon when highs for the day will occur. However, next short wave and high pressure to our north will force backdoor front back southward again this afternoon, this time all the way through southern New England, and offshore later in day. We're not expecting as abrupt of a temperature drop that we experienced yesterday, but it will still be noticeable. Although we may see some scattered showers this afternoon, most of showers will be focused closer to front across CT, RI, and southeast MA where models show better low level wind and moisture convergence. There is even some marginal instability there but most likely not enough to support thunder. KEY MESSAGE 2...Colder day Thursday then a milder but unsettled pattern prevails over weekend. Backdoor front will remain suppressed to our south Thursday as strong high pressure heads to Nova Scotia and maintains E/NE winds across region. Certainly looks like a cool and damp day for all, but there are some prospects for drying out in afternoon as weak wave of low pressure passes offshore. Temperatures should actually hold in 30s most of the day which could even result in a little sleet mixing in at times north of I-90 (but nothing impactful). Once the high moves farther out to sea, our front once again lifts to north in response to next low pressure system tracking through the upper Great Lakes. Temperatures will once again warm into 60s if not 70s away from ocean influence thanks to increasing S/SW flow. Pattern remains unsettled through weekend as we become sandwiched between Great Lakes trough and subtropical ridge off East Coast, leading to moist and relatively warm broad SW flow aloft. This pattern also favors showers from time to time, especially later Saturday into Sunday. We should see a return to drier and more seasonable temperatures early next week as stronger upper trough moves through Sunday and finally kicks front out to sea. Marine Forecaster Confidence Levels... Low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent. High confidence through the weekend. SCAs (Small Craft Advisories) remain posted mainly on south coastal waters for increasing SW winds today as backdoor front retreats northward early this morning, then settles over south coastal waters tonight and Thu with wind shift to NE but diminishing winds and seas. Next potential round of SCA (Small Craft Advisory) winds and seas should arrive Fri night and Sat as SW winds increase ahead of low pressure tracking through upper Great Lakes. Outlook /Thursday Night through Sunday/... Thursday Night: Winds less than 25 kt. Areas of seas approaching 5 ft. Chance of rain showers. Friday: Winds less than 25 kt. Areas of seas approaching 5 ft. Friday Night: Moderate risk for Small Craft Advisory winds with gusts up to 25 kt. Local rough seas. Saturday through Saturday Night: Winds less than 25 kt. Areas of seas approaching 5 ft. Slight chance of rain showers. Sunday: Strong winds with gusts up to 35 kt. Areas of rough seas. Chance of rain showers. NOAA Boston MA Office: Watches - Warnings - Advisories CT...None. MA...None. RI...None. Marine Small Craft Advisory until 7pm EDT this evening for ANZ232>234. Small Craft Advisory until 6pm EDT Thursday for ANZ235-237- 254>256. Small Craft Advisory until 2pm EDT this afternoon for ANZ236. Small Craft Advisory from 2am to 6pm EDT Thursday for ANZ250. |
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