Long Island Sound East of New Haven CT/Port Jefferson NY Marine Forecast
| Today...N Winds 5 To 10 Kt. Seas 1 Ft Or Less. Wave Detail: N 1 Ft At 4 Seconds. |
| Tonight...N Winds 5 To 10 Kt. Seas 1 Ft Or Less. |
| Sun...Ne Winds 5 To 10 Kt, Becoming Se In The Afternoon. Seas 1 Ft Or Less. |
| Sun Night...S Winds 5 To 10 Kt, Increasing To 10 To 15 Kt After Midnight. Seas 1 Ft Or Less. Showers Likely With Slight Chance Of Tstms After Midnight. |
| Mon...S Winds 10 To 15 Kt, Becoming Nw In The Afternoon. Seas Around 2 Ft. Showers Likely With Slight Chance Of Tstms. |
| Mon Night...Nw Winds Around 10 Kt With Gusts Up To 20 Kt. Seas 1 Ft Or Less. |
| Tue...Nw Winds 5 To 10 Kt With Gusts Up To 20 Kt. Seas 1 Ft Or Less. |
| Tue Night...Nw Winds 5 To 10 Kt. Seas 1 Ft Or Less. |
| Wed...Nw Winds 10 To 15 Kt With Gusts Up To 20 Kt. Seas 1 Ft Or Less. |
| Wed Night...Nw Winds 10 To 15 Kt. Seas 1 Ft Or Less. Winds And Seas May Be Higher In And Near Tstms. |
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Area Forecast Discussion National Weather Service New York NY 1042am EDT Sat Oct 5 2024 Synopsis High pressure builds into the area today, and moves offshore Sunday. Another cold front passes through late Sunday night into Monday. A large Canadian high pressure system builds across next week. The high will settle south of the area late in the week. Near Term - Until 6pm This Evening A cold front has pushed offshore this morning and winds have shifted to the north. Any showers north of the forecast area have dissipated, leaving the forecast dry today. Otherwise, the upper trough axis moves offshore this morning with heigheights building through the afternoon with an upper ridge moving into the eastern Great Lakes and Ohio Valley. Drier air moves in with the approach of high pressure, as dew points fall into the 40s across much of the area. However, afternoon high temperatures will average nearly 5 degrees above normal. Short Term - 6pm This Evening Through Monday The upper ridge amplifies and tracks slowly east tonight, then remains over the region through Sunday. Meanwhile, the next upper closed low, and trough will be moving through southern Canada and the Northern Plain states tonight, and into the Great Lakes region Sunday. Tonight and Sunday temperatures will ne near seasonal normals. A warm front approaches the region from the southwest Sunday night, and tracks north of the area late Sunday night or early Monday morning. With good frontal forcing and increasing moisture showers will become likely across much of the region by Monday morning. With some CAPE and instability, along with the forcing, isolated thunder cannot be ruled out. With the warm air moving in, Sunday night's lows will range from 5 to near 10 degrees above normal. The closed upper low opens Monday as the upper trough become negatively tilted, slowing the eastward progression of the associated cold front. Showers and isolated thunder will continue much of the day before the cold front moves east by Monday evening. Long Term - Monday Night Through Friday An upper level trough will persist across SE Canada with troughiness across the NE US through the middle of next week. The trough will then lift out for the latter portion of next week. A cold front gets well east of the area in the beginning of the period for Monday night. In the wake of the front sprawling high pressure will build gradually and settle nearby for the remainder of the week leading to a prolonged stretch of dry weather as dew point readings lower to more fall-like levels. Temperatures will average slightly below average through the period. Look for the coolest readings at night, especially in the more rural and outlying areas as a dry fall like airmass builds across. This will lead to a good deal of radiational cooling at night away from the urban areas. Overnight minimums will be in the 40s in the outlying / rural locations, with closer to 50 or in the lower 50s in the metro areas. Daytime maxes will be in the 60s throughout the week, and towards next weekend it will likely warm closer to 70, or in the lower 70s. Marine Updated the winds across the forecast waters as winds have shifted to the north to northwest with the passage of a cold front. Sub-SCA (Small Craft Advisory) conditions remain across the forecast waters today through Sunday. Ocean seas are expected to build to SCA (Small Craft Advisory) levels Sunday night as long period swells from Hurricane Kirk (see NHC for forecast details) move into the waters. The long period swells and elevated ocean seas will continue into Monday night. Small craft conditions end early Tuesday morning for the ocean waters as seas subside closer to 4 ft. A brisk WNW flow is expected Monday night into Tuesday, but any wind gusts are expected to remain below small craft criteria. Therefore, sub small craft conditions are anticipated Tuesday and Wednesday. More marginal small craft conditions are possible towards Wednesday night with NW winds potentially gusting around 20 kt. Hydrology No hydrologic issues are expected throughout the forecast period. NOAA New York NY Office: Watches - Warnings - Advisories CT...None. NY...None. NJ...None. Marine None. |
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