Long Island Sound West of New Haven CT / Port Jefferson NY Marine Forecast
| Today...W Winds 5 To 10 Kt, Becoming Sw Late. Seas 1 Ft Or Less. Wave Detail: Sw 1 Ft At 2 Seconds. |
| Tonight...Sw Winds Around 10 Kt. Seas 1 Ft Or Less. Wave Detail: Sw 1 Ft At 2 Seconds. |
| Sat...W Winds 5 To 10 Kt. Seas 1 Ft Or Less. Wave Detail: W 1 Ft At 2 Seconds. |
| Sat Night...W Winds Around 5 Kt. Seas 1 Ft Or Less. |
| Sun...Nw Winds Around 5 Kt, Becoming S In The Afternoon. Seas 1 Ft Or Less. |
| Sun Night...Sw Winds 5 To 10 Kt. Seas 1 Ft Or Less. |
| Mon...Sw Winds 5 To 10 Kt. Seas 1 Ft Or Less. |
| Mon Night...Sw Winds 5 To 10 Kt. Seas 1 Ft Or Less. |
| Tue...Sw Winds 10 To 15 Kt With Gusts Up To 20 Kt. Seas Around 2 Ft. |
| Tue Night...Sw Winds 10 To 15 Kt. Seas Around 2 Ft. Chance Of Showers. |
| Area Forecast Discussion National Weather Service New York NY 1035am EDT Fri Oct 3 2025 Synopsis High pressure will remain in control through early next week. A cold front will approach Tuesday night into Wednesday, then move across from late Wednesday afternoon into early Thursday. Strong high pressure will follow from the west beginning later Thursday. Near Term - Through Tonight Forecast on track thus far today with hourly temperatures and dewpoints within a few degrees of each other comparing observed to forecast values. Sky conditions are mostly sunny and are expected to remain that way through the day. A broad upper level ridge from the Plains east into the Mid Atlantic will maintain surface high pressure across the region. Expect another dry day, but a bit warmer with highs around 70. This is very close to normal. For tonight, it will also be milder with a SW flow and continued warm advection. Still weighed in some MOS to the NBM across the Pine Barrens region of LI which radiates exceptionally well. Lows will be in the upper 40s well inland and across the Pine Barrens region of LI, to mainly in the 50s elsewhere. Short Term - Saturday Through Sunday Night Upper level ridging dominating the eastern two thirds of the country will track slowly east through the period as Pac Jet energy kicks an upper trough out into the Plains. The building heigheights will allow warming across the area and continued dry weather with surface high pressure in control. High temperatures Saturday and Sunday will be around 10 degrees above normal, ranging from the upper 70s to lower 80s. Lows will be about 3 to 5 degrees above normal, ranging from the 50s across outlying areas, to around 60 for the NYC metro. Low-level moisture will also be on the increase in a light SW/S flow. Dewpoints will get back up into the 50s and possibly around 60 for Sunday night. Long Term - Monday Through Thursday NBM was followed with minimal cosmetic changes. Key Points: * High pressure remains in place through Tuesday with dry conditions. * The high slides east Tuesday night as a cold front approaches from the west. Showers are likely from Tuesday night into early Thu with the frontal approach/passage, especially daytime Wednesday into Wednesday evening. * High pressure returns to end the week. * Temperatures Monday and Tuesday will be in the middle and upper 70s to lower 80s, with highs on Wednesday slightly cooler, with highs only in the 70s. This will be 5-10 degrees above normal. At this time no record highs are expected to be set. Temperatures fall below normal on Thursday with highs only in the lower and middle 60s. Marine Sub-SCA (Small Craft Advisory) conditions expected across all marine zones today with high pressure in control. SW/WSW winds increase to 10 to 15 kt tonight with seas on the ocean waters building some, but expected to remain around 4 ft. There is a chance for a brief period of 5 ft seas east of Fire Island Inlet. Otherwise, conditions should remain below advisory criteria through Tuesday night as high pressure remains in control. The next chance of SCA (Small Craft Advisory) conditions will be Wednesday or Thursday. Hydrology Quantitative Precipitation Forecast from Tuesday night into Thu morning could be close to an inch. No accompanying hydrologic issues expected at the this time. NOAA New York NY Office: Watches - Warnings - Advisories CT...None. NY...None. NJ...None. Marine None. |
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