Long Island Sound West of New Haven CT / Port Jefferson NY Marine Forecast
| Today...Ne Winds 5 To 10 Kt, Becoming E This Afternoon. Seas 1 Ft Or Less. |
| Tonight...E Winds 5 To 10 Kt, Becoming Ne After Midnight. Seas 1 Ft Or Less. |
| Tue...E Winds 5 To 10 Kt. Seas 1 Ft Or Less. |
| Tue Night...Se Winds 5 To 10 Kt, Diminishing To Around 5 Kt After Midnight. Seas 1 Ft Or Less. |
| Wed...Se Winds 5 To 10 Kt. Seas 1 Ft Or Less. Wave Detail: Se 1 Ft At 2 Seconds. Slight Chance Of Showers In The Afternoon. |
| Wed Night...Se Winds 5 To 10 Kt, Increasing To 10 To 15 Kt After Midnight. Seas 1 Ft Or Less. Wave Detail: Se 1 Ft At 2 Seconds. Showers. |
| Thu...Ne Winds 15 To 20 Kt. Seas Around 2 Ft. Showers Likely. |
| Thu Night...Nw Winds 20 To 25 Kt. Seas 2 To 3 Ft. |
| Fri...Nw Winds 20 To 25 Kt With Gusts Up To 30 Kt. Seas 2 To 3 Ft. |
| Fri Night...Nw Winds 20 To 25 Kt. Seas 2 To 3 Ft. |
| Area Forecast Discussion National Weather Service New York NY 141pm EDT Monday April 27 2026 .WHAT HAS CHANGED... No significant changes were made. .KEY MESSAGES... 1) Mostly dry with near normal temperatures through mid-week. 2) A widespread rainfall is expected Wednesday night into Thursday, with a cooler pattern then in place through the weekend. .KEY MESSAGE 1... Offshore low pressure will slowly drift east today, allowing high pressure to nose in from the north through early Tuesday. A cold front approaches late on Tuesday, but runs into ridging aloft, so not looking for too much in the way of rain Tuesday night, with just a slight chance of showers across NE NJ, and the Lower Hudson Valley. With heigheights building aloft, warmer temperatures are expected, but they are expected to be near normal, generally in the 60s. .KEY MESSAGE 2... Global dynamical and AI-based ensemble systems continue to advertise anomalously low H5 heigheights over the East late this week, with stubborn troughing thanks to strong blocking setting up between the Canadian Maritimes and Greenland. The strength and placement of these features will help drive the sensible weather locally through the weekend. Ahead of this, an advancing frontal system leads the incoming trough, with shortwave energy rounding the trough helping to instigate a surface wave of low pressure along the boundary. This will bring a widespread rainfall as the system passes through Wednesday night into Thursday morning, with potential for the rain to linger later into the day. Quantitative Precipitation Forecast has trended upwards since the last forecast update, now looking to average around one inch through Thursday, with NBM V5 90th percentile around 1.5 to 2.0 inches. Hydrological concerns appear minimal, and should largely prove beneficial with NYC, NE NJ, and the LoHud Valley in moderate drought. Thereafter, still some uncertainty with additional chances for rain into the weekend, but for now, increasing confidence in cooler than normal conditions late this week into early next, with daytime highs mid to late week largely in the 50s and low 60s, and chances for wet weather at times, though a washout appears unlikely. Marine Small Craft Advisories remain in place for ocean waters through Tuesday due to a lingering 5ft swell from an offshore low. This may continue into Tuesday night. Sub-SCA (Small Craft Advisory) conditions are then expected on Wednesday. Winds and seas may return to SCA (Small Craft Advisory) levels on Thursday and remain so into Friday. NOAA New York NY Office: Watches - Warnings - Advisories CT...None. NY...None. NJ...None. Marine Small Craft Advisory until 8pm EDT Tuesday for ANZ350-353-355. |
New York Radar
Northeast Radar
East Coast Satellite