Fire Island Inlet NY to Moriches Inlet NY out 20 NM Marine Forecast
| Tonight...E Winds Around 5 Kt, Becoming Ne Late. Seas Around 2 Ft. Wave Detail: S 2 Ft At 7 Seconds And E 1 Ft At 8 Seconds. Slight Chance Of Showers Early This Evening, Then Showers Late This Evening And Overnight. Vsby 1 To 3 Nm After Midnight. |
| Sun...Ne Winds 5 To 10 Kt, Becoming Sw In The Afternoon. Seas 2 To 3 Ft. Wave Detail: Se 2 Ft At 7 Seconds And Se 1 Ft At 12 Seconds. Chance Of Showers In The Morning. |
| Sun Night...Sw Winds Around 5 Kt, Becoming Nw After Midnight. Seas Around 3 Ft. Wave Detail: Se 3 Ft At 6 Seconds And Se 2 Ft At 10 Seconds. |
| Mon...Ne Winds 5 To 10 Kt. Seas 3 To 4 Ft, Occasionally To 5 Ft. Wave Detail: Se 3 Ft At 16 Seconds And E 2 Ft At 5 Seconds. |
| Mon Night...E Winds Around 5 Kt. Seas 3 To 5 Ft, Occasionally To 6 Ft. Wave Detail: Se 5 Ft At 16 Seconds And Se 2 Ft At 5 Seconds. |
| Tue...Ne Winds 5 To 10 Kt. Seas 5 To 6 Ft, Occasionally To 8 Ft. Wave Detail: Se 6 Ft At 15 Seconds. |
| Tue Night...Ne Winds 10 To 15 Kt, Increasing To 20 To 25 Kt After Midnight. Seas 6 To 9 Ft, Occasionally To 11 Ft. |
| Wed...Ne Winds 25 To 30 Kt. Seas 8 To 11 Ft, Occasionally To 14 Ft. |
| Wed Night...Ne Winds 20 To 25 Kt. Seas 7 To 10 Ft, Occasionally To 13 Ft. |
| Thu...Ne Winds 20 To 25 Kt. Seas 6 To 9 Ft, Occasionally To 11 Ft. |
| Thu Night...Ne Winds 10 To 15 Kt With Gusts Up To 20 Kt. Seas 4 To 6 Ft, Occasionally To 8 Ft. |
| Area Forecast Discussion National Weather Service New York NY 1025pm EDT Sat September 27 2025 Synopsis Weak low pressure moves east of the Delmarva tonight and moves well east of the area during Sunday as a weakening cold front approaches from the northwest. High pressure builds in next week while low pressure remains well south and southeast of the region. Near Term - Through Sunday A weak low over eastern North Carolina and eastern Virginia tracks north and east along the eastern periphery of a weak upper trough along the east coast tonight. The upper trough moves slowly eastward while weakening through tonight. The surface low will move far enough north to bring precipitation, mainly across the southern sections, to the region this evening into tonight, and depending on how quickly the low moves east with the upper trough, ending before dawn Sunday. There is a chance that a few showers remain very early Sunday morning across the far eastern areas, the Twin Forks of Long Island and over the ocean. Generally followed the NBM, with a NBM and CAMs blend for the probabilities of precipitation. Short Term - Sunday Night Through Monday Night The upper trough weakens significantly early Sunday with the flow become predominately westerly into Monday night as weak upper ridging builds. A weakening surface cold front approaches during Sunday and likely dissipates Sunday evening before passing through. High pressure then dominates into Monday night. Overnight lows, and daytime highs will remain 5 to near 10 degrees above normal through the period. Long Term - Tuesday Through Saturday A 1030s Canadian high will build SE after a dry cold frontal passage Tuesday night. At first, there will be solid NE flow locked in with the center of the high over Ontario/Quebec and Hurricane Humberto passing well to the SE over the open Atlantic. Winds could gust to 25-30 mph on Wed, all associated strictly with the pressure gradient between the two systems and not with an expanding core of winds with the hurricane as was the case with Erin back in August. As the high reaches the area by the end of the week, winds will go light. Above normal temps Tue/Tuesday night will fall to near normal on Wed, and a few degrees below normal on Thu with highs only in the 60s. Lows Thu night could be some of the coolest this far this season, with lows in the upper 30s/lower 40s well inland and near 50 in NYC. (At Central Park, the forecast high of 64 on Thu would be the coolest since June 15th, and the forecast low of 51 Thu night the coolest since June 1st). Temps should then rebound to near normal on Fri and a few degrees above normal on Sat. For specific observational and forecast information regarding Humberto and newly formed Tropical Depression Nine, see the latest forecasts from the National Hurricane Center. Marine Winds and seas remain below advisory levels across the forecast waters through the day Monday. SCA (Small Craft Advisory) cond are likely from Monday night through Thu on the ocean, first via building swell from Humberto, then with gradient flow between Humberto and strong inland high pressure from late Tuesday night into Thu morning. Max swells look to peak in the 7-10 ft range on Wed, with some occasional higher swells over 10 ft. Winds may also gusts up to 25 kt on the south shore bays and the eastern Sound/bays on Wed. Hydrology No hydrologic issues expected through next week. Tides / Coastal Flooding With a continuous NE flow during mid week along with large swells from Humberto from Tuesday through Thu, total water levels and surf will both be on the increase. Coastal flooding appears unlikely as we will be in between moon phases, but high surf, dangerous rip currents, and some minor oceanfront beach flooding/erosion may be possible Wed/Thu. There is a low rip current risk through Sunday with waves around 2 ft and light wind. The last regular surf zone forecast for the season will be issued early Sunday morning the 28th. Forecasts will resume on Thursday, May 21, 2026, before the next Memorial Day weekend. NOAA New York NY Office: Watches - Warnings - Advisories CT...None. NY...None. NJ...None. Marine None. |
New York Radar
Northeast Radar
East Coast Satellite