Montauk NY to Marthas Vineyard out 20 NM South of Block Island Marine Forecast
| This Afternoon...W Winds Around 20 Kt With Gusts Up To 25 Kt. Seas 4 To 6 Ft. Wave Detail: W 5 Ft At 6 Seconds And E 1 Foot At 11 Seconds. |
| Tonight...Nw Winds 20 To 25 Kt With Gusts Up To 30 Kt. Seas 4 To 6 Ft. Wave Detail: W 6 Ft At 6 Seconds And E 1 Foot At 10 Seconds. |
| Thu...Nw Winds 20 To 25 Kt With Gusts Up To 30 Kt, Diminishing To 15 To 20 Kt In The Afternoon. Seas 4 To 6 Ft. Wave Detail: N 6 Ft At 5 Seconds And Se 1 Foot At 11 Seconds. Light Freezing Spray Likely In The Morning. |
| Thu Night...Nw Winds 15 To 20 Kt With Gusts Up To 25 Kt. Seas 3 To 4 Ft. Wave Detail: N 4 Ft At 5 Seconds And S 1 Foot At 9 Seconds. Light Freezing Spray After Midnight. |
| Fri...Nw Winds 10 To 15 Kt With Gusts Up To 20 Kt. Seas 2 To 3 Ft. Wave Detail: N 3 Ft At 5 Seconds And S 1 Foot At 10 Seconds. Light Freezing Spray In The Morning. |
| Fri Night...W Winds 15 To 20 Kt With Gusts Up To 25 Kt. Seas 2 To 4 Ft. Wave Detail: W 4 Ft At 5 Seconds And Ne 1 Foot At 8 Seconds. |
| Sat And Sat Night...Nw Winds 15 To 20 Kt. Seas 2 To 4 Ft. |
| Sun And Sun Night...N Winds 10 To 15 Kt, Becoming E 15 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 254pm EST Wednesday Feb 11 2026 .WHAT HAS CHANGED... No major changes to the forecast. .KEY MESSAGES... - Mainly dry through Thursday Night with the exception of a few light snow showers this evening and overnight. - Mostly dry through this weekend except a low chance for light nuisance snow Saturday. Temperatures make a return to near normal. Attention turns to late this weekend for a potential coastal storm, but forecast confidence remains low due to track uncertainty. KEY MESSAGE 1...Mainly dry through Thursday Night with the exception of a few light snow showers this evening and overnight. A mid level shortwave passes by southern New England late today into tonight. WHile this may be enough to trigger a few snow showers during this time, there is not much lift or humidity expected within the dendritic growth zone. Thus, really looking more like flurries over land. Over the coastal waters, could be a different story where some ocean effect processes can help to enhance the shower risk, which would be mainly a cold rain over the eastern MA coastal waters this evening. Colder air moves over our region late tonight, so expecting low temperatures to be 5-7 degrees lower than what we saw this morning. This trend looks to continue through Thursday night. KEY MESSAGE 2...Mostly dry through this weekend except a low chance for light nuisance snow Saturday. Temperatures make a return to near normal. Attention turns to late this weekend for a potential coastal storm, but forecast confidence remains low due to track uncertainty. High pressure builds in over the Midwest/Mid-Atlantic regions later this week, finally pushing the arctic airmass offshore, bringing southern New England back to seasonable temperatures. High temperatures rise into the mid to upper 30s, though overnight lows will still fall into the teens and low 20s, with some spots in the interior in the single digits. Another upper-level low moves through Friday night, bringing chances for another quick shot of snow showers to southern New England early Saturday morning. The latest NBM guidance indicates probabilities 20- 30% chance of seeing 0.1" of snow across eastern MA as PWATs (Precipitable Waters) remain only about 75% of normal. Heading into next week, guidance continues to indicate potential impacts from another storm moving across Texas and off the southeast Atlantic coast. Uncertainty in the timing and track only increases exponentially at that point, with the latest ensemble suite slowing the development of the low and increasing the spread of possible tracks. The Canadian ensemble indicates the closest track, passing just south of Nantucket, while the ECMWF (European Centre for Medium-Range Weather Forecasts) ensemble shows the low passing south of the 40N/70W benchmark. The GFS (Global Forecast System) ensemble struggles to resolve the low, with several members indicating the low may not remain organized as it moves offshore. Continued with low-end Probability of Precipitation for Sunday night into Monday given the high amount of uncertainty at this point. Marine Forecaster Confidence Levels... Low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent. Through Thursday Night...High Confidence. Low pressure south of the Maritimes will swing an inverted trough over the coastal waters tonight. This could trigger scattered rain showers, at least until colder air arrives after midnight, when snow showers would be favored over the eastern coastal waters. Gusty NW winds persist as well. Toward daybreak areas of freezing spray are likely, especially the nearshore waters of MA and RI. Outlook /Friday through Monday/... Friday through Saturday Night: Winds less than 25 kt. Seas locally approaching 5 ft. Sunday: Winds less than 25 kt. Sunday Night: Winds less than 25 kt. Slight chance of rain, slight chance of snow. Washingtons Birthday: Winds less than 25 kt. Seas locally approaching 5 ft. Chance of rain. NOAA Boston MA Office: Watches - Warnings - Advisories CT...None. MA...None. RI...None. Marine Small Craft Advisory from 10pm this evening to 10am EST Thursday for ANZ235-237. Small Craft Advisory from 6pm this evening to 7am EST Friday for ANZ250. Small Craft Advisory until 7am EST Friday for ANZ254-255. Small Craft Advisory until 7pm EST Thursday for ANZ256. |
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