Long Island Sound East of New Haven CT/Port Jefferson NY Marine Forecast
| Today...Sw Winds 5 To 10 Kt. Seas 1 Ft Or Less. Wave Detail: Sw 1 Ft At 3 Seconds. Slight Chance Of Showers Until Late Afternoon. |
| Tonight...S Winds 5 To 10 Kt, Becoming Sw After Midnight. Seas 1 Ft Or Less. Wave Detail: S 1 Ft At 2 Seconds. Chance Of Showers. |
| Thu...W Winds 15 To 20 Kt With Gusts Up To 25 Kt, Increasing To 20 To 25 Kt With Gusts Up To 30 Kt In The Afternoon. Seas 2 To 4 Ft, Occasionally To 5 Ft. Wave Detail: W 3 Ft At 4 Seconds. Slight Chance Of Rain And Snow Showers In The Morning With Vsby 1 To 3 Nm. |
| Thu Night...W Winds 20 To 25 Kt With Gusts Up To 30 Kt. Seas 3 To 5 Ft, Occasionally To 6 Ft. Wave Detail: W 5 Ft At 5 Seconds. |
| Fri...W Winds 20 To 25 Kt, Becoming Sw 15 To 20 Kt In The Afternoon. Seas 3 To 5 Ft, Occasionally To 6 Ft. Wave Detail: W 5 Ft At 5 Seconds. |
| Fri Night...Sw Winds 10 To 15 Kt. Seas 2 To 3 Ft. Wave Detail: Sw 3 Ft At 4 Seconds. |
| Sat...Sw Winds Around 10 Kt. Seas 1 Ft Or Less. Chance Of Rain. |
| Sat Night...W Winds 5 To 10 Kt. Seas 1 Ft Or Less. |
| Sun...W Winds 10 To 15 Kt With Gusts Up To 20 Kt. Seas Around 2 Ft. |
| Sun Night...W Winds 10 To 15 Kt With Gusts Up To 20 Kt. Seas 2 To 3 Ft. |
| Area Forecast Discussion National Weather Service New York NY 635am EST Wednesday Jan 14 2026 .WHAT HAS CHANGED... No major changes with the forecast. .KEY MESSAGES... 1) Airmass will trend from mild and warmer than normal today through early Thursday to colder than normal for Thursday night and Friday. Temperatures forecast to be seasonably cold Friday night. 2) Precipitation with rain showers today into tonight mixes with snow Thursday before all precipitation ends. Some light snow accumulations forecast north and west of NYC. Light precipitation event overall with less than quarter inch of rain/liquid equivalent. 3) Winds become quite breezy Thursday and Friday with frequent gusts within the 25 to 35 mph range. This is mostly a gusty westerly flow, although winds expected to become more SW late Friday. Single digit wind chills for most locations Thursday night into Friday morning. 4) A disorganized series of frontal systems move over the area this weekend which may result in chances of light snow or rain with a much colder airmass building over the area through early next week. .KEY MESSAGE 1... After more mild temperatures today and tonight, well above normal values, the strong cold air advection expected Thursday behind a cold front will make for temperatures declining during the day. The forecast highs will likely be set during the very earlyam hours. A non-diurnal trend to temperatures expected for tonight through Thursday. Thereafter, Thursday night and Friday, temperatures are forecast to be colder than normal and with some moderation in temperatures expected Friday night, lows will be close to normal values. .KEY MESSAGE 2... Precipitation will be primarily with the approaching cold front and from vertical forcing with incoming positive vorticity advection with deep trough approach. The rain showers start today into tonight but with the passage of the cold front, a much colder airmass will be ushered into the region. This will make for some mixing with snow and purely snow for far interior locations north and west of NYC. Forecast manually adjusted to account for more wet bulb cooling and to pick up on a more rapid cold air advection scenario. Total snow still looks to be less than 1 inch across interior zones with no measurable snow expected to the southeast along the coast. Highest accumulations, near half inch in NW parts of Orange County NY, and with timing of this for Thursday morning, there will be potential impacts to the morning commute with slippery travel possible. .KEY MESSAGE 3... Breezy conditions expected Thursday into early Friday in response to tightening pressure gradient. Associated with this will be a deepening area of low pressure along the cold front that is expected to pass through early Thursday and then farther to the north and east. Wind gusts mostly in the 25 to 35 mph are expected. Winds do trend down late Friday into Friday night with a decrease in the pressure gradient. The winds will make for very cold wind chills, in the single digits Thursday night into early Friday. .KEY MESSAGE 4... A trough digs west of the area with multiple pieces of mid-level energy rotating through it this weekend. These will result in a relatively weak, disorganized, and complex areas of low pressure over much of the Northeast through the weekend and into early next week. As the several weak systems move through the area, chances of light snow or initially rain closer to the coast will be possible Saturday through Sunday evening. If it occurs, as Probability of Precipitation only indicate a slight chance (20%) of precipitation, it will be light in intensity and disorganized. By Monday, a more robust area of mid-level energy sweeps through allowing in a more significant low pressure intensification as it develops and moves to the northeast of the area. This is not anticipated to impact the CWA (County Warning Area) in any meaningful way with respect to sensible weather. The most significant part of this pattern will be the rapid change in airmass that maintains over the area into next week. Temperatures on Saturday will be seasonable with highs in the upper 30s and low 40s. By Sunday, high temperatures will be below average, only in the low 30s with colder temperatures anticipated for early next week. Highs by Tuesday will only be in the 20s. Wind chills by Monday night may be in the single digits. Marine SCA (Small Craft Advisory) conditions are confined to the ocean waters. The ocean waters are expected to remain mostly with SCA (Small Craft Advisory) conditions through Thursday as seas will subside briefly this evening only to trend back up thereafter. For the non-ocean waters, they too are expected to meet SCA (Small Craft Advisory) criteria for wind gusts on Thursday. Widespread SCA (Small Craft Advisory) level wind gusts are expected Thursday through Friday for all forecast waters with the potential for gales as well Thursday night into early Friday. There is a gale watch in effect for the ocean zones for all of Thursday night as well as Friday morning where there is higher confidence for reaching gales. SCA (Small Craft Advisory) level winds likely drop off for non-ocean waters Friday night but will likely linger onward for the ocean. Seas on the ocean are also forecast to stay elevated in the SCA (Small Craft Advisory) range Thursday night through Friday night. Though wind relaxes on Saturday, elevated wave heigheights will maintain SCA (Small Craft Advisory) criteria on the ocean through the weekend. Equipment KOKX Doppler Radar remains out of service. NOAA New York NY Office: Watches - Warnings - Advisories CT...None. NY...None. NJ...None. Marine Small Craft Advisory from 6am to 6pm EST Thursday for ANZ331- 332-335-338-340-345. Small Craft Advisory until 6pm EST Thursday for ANZ350-353- 355. Gale Watch from Thursday evening through Friday morning for ANZ350-353-355. |
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