Long Island Sound West of New Haven CT / Port Jefferson NY Marine Forecast
| Today...S Winds 20 To 25 Kt With Gusts Up To 30 Kt, Increasing To 25 To 30 Kt Late. Seas 2 To 4 Ft, Occasionally To 5 Ft. Wave Detail: S 3 Ft At 4 Seconds. Showers And Chance Of Tstms. Areas Of Fog Today. Vsby 1 Nm Or Less. |
| Tonight...S Winds 25 To 35 Kt, Becoming Sw After Midnight. Seas 3 To 5 Ft, Occasionally To 6 Ft. Wave Detail: Sw 4 Ft At 4 Seconds. Showers And Chance Of Tstms In The Evening, Then Showers And Slight Chance Of Tstms After Midnight. Areas Of Fog. Vsby 1 To 3 Nm. |
| Tue...W Winds 20 To 25 Kt With Gusts Up To 30 Kt. Seas 2 To 4 Ft, Occasionally To 5 Ft. Wave Detail: W 4 Ft At 4 Seconds. |
| Tue Night...W Winds 20 To 25 Kt, Becoming Nw 15 To 20 Kt After Midnight. Seas 2 To 4 Ft, Occasionally To 5 Ft. Wave Detail: W 3 Ft At 4 Seconds. |
| Wed...Nw Winds 10 To 15 Kt, Becoming Sw 5 To 10 Kt In The Afternoon. Seas 1 To 2 Ft In The Morning, Then 1 Ft Or Less. Wave Detail: W 2 Ft At 3 Seconds. |
| Wed Night...S Winds 5 To 10 Kt. Seas 1 Ft Or Less. |
| Thu...S Winds 5 To 10 Kt. Seas 1 Ft Or Less. |
| Thu Night...S Winds 5 To 10 Kt. Seas 1 Ft Or Less. |
| Fri...W Winds 10 To 15 Kt. Seas 1 Ft Or Less. |
| Fri Night...W Winds 10 To 15 Kt. Seas Around 2 Ft. Chance Of Rain. Winds And Seas May Be Higher In And Near Tstms. |
| Area Forecast Discussion National Weather Service New York NY 253pm EDT Monday Mar 16 2026 .WHAT HAS CHANGED... The wind advisory has been expanded to include the entire CWA. Dense fog advisory expected on the area waters through 11 pm .KEY MESSAGES... 1) A strong frontal system brings periods of rain and the potential for thunderstorms to the region this afternoon into tonight. Urban and poor drainage flooding is possible. Wind gusts 40 to 50 mph are also expected. 2) A drier and colder airmass settles into the area for Tuesday through Thursday. 3) A frontal boundary will move across the region this weekend bring another chance of precipitation. .KEY MESSAGE 1... A strong frontal system impacts the region this afternoon into tonight with strong, gusty southerly winds, moderate to locally heavy rainfall, and the potential for gusty thunderstorms, especially across inland areas. A deep low pressure system over the Great Lakes will track into eastern Canada tonight. A warm front associated with this system continues to slowly lift north across parts of the region this afternoon, which will then be followed by a strong cold front tonight. With much of the area now in the warm sector, a strong and gusty southerly flow has developed and showers are expecting to become more scattered as the afternoon moves on. A low level jet of 50-60 kt moves into the region, and these higher winds may mix to the surface, with the potential of gusts near or just over 40 kt. As a result, A wind advisory is now in effect for the entire region through 4am Tuesday. The low level jet increases further early this evening and into tonight ahead of an approaching cold front, with wind of 70-90 kt at 3K ft possible. A surface based inversion slowly weakens this evening and these higher winds may mix to the surface with any stronger convection that develops ahead of the cold front. The Storm Prediction Center keeps the area remains in a general thunderstorm risk, with the slight risk of severe thunderstorms just to the west, through western New Jersey, and a marginal risk across eastern New Jersey into Nassau county, and the Lower Hudson Valley. Any strong storms could produce severe wind gusts to around 50kt this evening in the marginal risk area, and maintained the gusty enhanced wording inland areas. While storms will be moving rather quickly moderate to locally heavy rainfall is possible in a short time, and minor urban and poor drainage flooding may result, and the entire area is in a marginal risk for excessive rainfall. Rainfall will generally be 3/4 to 1 1/2 inches, with higher amounts of 2 to locally 2.5 inches across southern CT. Given this higher rainfall potential across southern Connecticut have maintained the Flood Watch with a localized flash flood threat. Fast responding smaller rivers and stream may approach or exceed bankfull, however the larger and more widespread riverine flood threat is not expected. The front is expected to move east of the region by 4-5am. .KEY MESSAGE 2... High pressure gradually builds into the region on Tuesday, settling over the region Wednesday, then departs Thursday. The high will bring in a colder and drier airmass behind the frontal system of Monday. Temperatures Tuesday through Wednesday night will run about 10 degrees below normal for mid-March. Gusty conditions likely continue on Tuesday, and will produce wind chill values in the 30s for much of the day. Warmer temperatures return for the end of the week. Key Message 3... Another frontal system is expected to approach Friday into move across there region this weekend. Right now, there remains some timing issues with exactly when the front moves across the area. Expect at least some chance POPs this weekend, with rain across the southern half of the CWA (County Warning Area) and some light snow or a rain/snow across the northern half as the front moves through. Marine A strong frontal system will bring an increasing, and gusty, southerly flow to the forecast waters through tonight. While Small craft conditions continue on the waters into early this afternoon, southerly gusts are expected to increase and reach gale force later this afternoon. A Gale Warning remains in effect for all the waters today into tonight. Showers and thunderstorms will be likely ahead of a strong cold front late this afternoon into this evening. The thunderstorms could bring higher wind gust to the water surface with the potential of local gusts to 50 kt. Westerly winds behind the cold front passage will begin to diminish especially by late tonight, with gusts on the non-ocean waters potentially lowering to SCA (Small Craft Advisory) levels. Ocean gusts, especially on the eastern waters fall below gale force by Tuesday morning. Small craft conditions likely linger on all waters through Tuesday with 25 kt gusts, but could potentially continue into Wednesday on the ocean waters with lingering 5ft seas. Sub-SCA (Small Craft Advisory) conditions then expected thereafter. NOAA New York NY Office: Watches - Warnings - Advisories CT...Flood Watch through Tuesday morning for CTZ005>012. Wind Advisory until 4am EDT Tuesday for CTZ005>012. NY...Wind Advisory until 4am EDT Tuesday for NYZ067>075-078>081- 176>179. NJ...Wind Advisory until 4am EDT Tuesday for NJZ002-004-006- 103>108. Marine Gale Warning until 6am EDT Tuesday for ANZ331-332-335-338-340- 345-350-353-355. Dense Fog Advisory until 11pm EDT this evening for ANZ331-332- 335-338-340-345-350-353-355. |
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