Long Island Sound West of New Haven CT / Port Jefferson NY Marine Forecast
| Today...W Winds 10 To 15 Kt, Becoming Nw. Occasional Near Shore Gusts Up To 25 Kt. Seas Around 2 Ft. Wave Detail: Sw 1 Ft At 2 Seconds. |
| Tonight...N Winds 5 To 10 Kt. Seas 1 Ft Or Less. Wave Detail: Nw 1 Ft At 2 Seconds. |
| Sun...Ne Winds Around 5 Kt, Becoming Se In The Afternoon. Seas 1 Ft Or Less. |
| Sun Night...S Winds 10 To 15 Kt. Seas 1 Ft Or Less, Then Around 2 Ft After Midnight. Wave Detail: S 1 Ft At 2 Seconds. |
| Mon...Sw Winds 10 To 15 Kt, Increasing To 15 To 20 Kt In The Afternoon. Seas Around 2 Ft. Wave Detail: Sw 2 Ft At 3 Seconds. |
| Mon Night...Sw Winds 15 To 20 Kt, Becoming W 10 To 15 Kt After Midnight. Seas Around 2 Ft. Wave Detail: Sw 2 Ft At 4 Seconds. |
| Tue...Sw Winds 5 To 10 Kt. Seas 1 Ft Or Less. |
| Tue Night...Sw Winds 5 To 10 Kt. Seas 1 Ft Or Less. Chance Of Showers In The Evening. |
| Wed...Sw Winds 5 To 10 Kt, Increasing To 10 To 15 Kt In The Afternoon. Seas 1 Ft Or Less, Then Around 2 Ft In The Afternoon. |
| Wed Night...Sw Winds 10 To 15 Kt, Diminishing To 5 To 10 Kt After Midnight. Seas Around 2 Ft In The Evening, Then 1 Ft Or Less. |
| Area Forecast Discussion National Weather Service New York NY 436am EDT Sat April 11 2026 .WHAT HAS CHANGED... 1. Small Craft Advisories issued for today for NY Harbor and the Long Island South shore Bays, and extended for the ocean waters through this afternoon. 2. Raised temperatures for Tuesday through Thursday, with some record high temperatures possible on Wednesday, and some record high minimums possible each day. .KEY MESSAGES... 1. Dry and mild with elevated fire weather concerns for portions of the area today, then cooler on Sunday. 2. Noticeably warmer next week. .KEY MESSAGE 1... Cold front just tarting to enter Orange County as of 07Z and should be through the entire CWA (County Warning Area) by daybreak. A gusty/drying NW flow will take hold after frontal passage. with RH lowering to 25-30% over most of the area as temps rise to the upper 50s/lower 60s and dewpoints drop to 25-30, with peak wind gusts 25-30 mph this morning into early afternoon. Special weather statement already issued for NY/CT. Winds will diminish toward evening as high pressure builds in tonight into Sunday morning, then moves offshore Sunday afternoon. A return flow off the ocean will keep temperatures from getting out of the 50s on Sunday. .KEY MESSAGE 2... A noticeable warmup is still on track for next week as overnight lows and daytime highs will be at least 10 degrees to as much as 20-25 degrees above normal inland, with the warmest days Wed/Thu. Upper ridging will be in place with nearly zonal flow Monday into Tuesday as a series of warm front pass through, with reinforcing ridging Wed/Thu. H8 temperatures on Wednesday should peak near 15C and may reach 17C-18C on Thu, with inland temperatures potentially reaching into the mid/upper 80s both days per blend of NBM 90th percentile and 00Z GFS/ECMWF (European Centre for Medium-Range Weather Forecasts) MOS guidance. Inland areas will be the warmest as the low level flow remains southwest, while coastal areas will be cooler, but still well above normal levels, with a southerly sea breeze influenced flow. A surface trough developing Tue/Wednesday afternoons, along with convergence with local sea breezes, may be the focus for showers and thunderstorms each afternoon and early evening, though chance Probability of Precipitation is confined to inland sections attm. Cold fropa later this week may be delayed until Thu night per latest ECMWF. Friday is expected to be cooler behind the cold front, but with highs still reaching 75-80 inland. A few daily record highs mat be tied or broken on Wed, as well as record high minimum temperatures Tuesday through Thu. Marine Issued SCA (Small Craft Advisory) for NY Harbor and the Long Island south shore bays from 8 Am until 2pm for near shore post-frontal winds gusting to 25 kt. Meanwhile, hazardous ocean seas of 5 ft should continue through the day today, so SCA (Small Craft Advisory) has been extended there until 6 PM. A strengthening S-SW flow could bring marginal SCA (Small Craft Advisory) conditions (both wind gusts and seas) to the ocean waters Monday into Monday night, also possibly via gusts Monday afternoon to the south shore/eastern bays of Long Island and the non ocean waters E of Orient Point. Seas on the eastern ocean waters may not fall below 5 ft until early Tuesday morning. NOAA New York NY Office: Watches - Warnings - Advisories CT...None. NY...None. NJ...None. Marine Small Craft Advisory from 8am this morning to 2pm EDT this afternoon for ANZ338-345. Small Craft Advisory until 6pm EDT this evening for ANZ350- 353-355. |
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