Stormy Weather Along the East Coast; Extended Warm-up for the West

A strong low pressure system will bring heavy rain, gusty winds, and thunderstorms along the east coast. Isolated severe thunderstorms could produce damaging winds and a few tornadoes in the Southeast. Heavy rains may result in excessive runoff and flash flooding. Building high pressure out west will produce above normal temperatures, especially, in the Pacific Northwest.
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New York, NY Local Forecast Office

12NM NW Islip NY

Marine Point Forecast

[NOTICE]
  • Tonight

    Mostly Clear

    SSE 11km/hWinds Decreasing
    < 1m
  • Tuesday

    Partly Sunny

    Winds IncreasingSE 14km/h
    < 1m
  • Tuesday
    Night

    Rain

    E 18km/h
    < 1m
  • Wednesday

    Rain

    SSE 29km/hWinds Decreasing
    < 1m
  • Wednesday
    Night

    Chance Rain

    SW 16km/h
    < 1m
  • Thursday

    Partly Sunny

    WSW 24km/h
    < 1m
  • Thursday
    Night

    Partly Cloudy

    WSW 18km/h
    < 1m
  • Friday

    Mostly Sunny

    W 13km/h
    < 1m
  • Friday
    Night

    Mostly Cloudy

    S 18km/h
    < 1m

Associated Zone Forecast which includes this point

Last Update: 3:30 pm EDT Apr 23, 2018
Forecast Valid: 8pm EDT Apr 23, 2018-6pm EDT Apr 30, 2018

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Detailed Forecast


Synopsis: ANZ300-240830- 400 PM EDT Mon Apr 23 2018 .Synopsis for the Long Island Waters and New York Harbor... High pressure track east across the western Atlantic, while low pressure over the southern states works northward through the middle of the week. The low will lift across the area on Wednesday. High pressure returns on Thursday with a wave of low pressure passing near the area on Friday. A weak frontal system on then moves through on Saturday followed by sprawling high pressure builds in thereafter. $$

Tonight
SSE wind 6 to 11 km/h becoming variable and less than 5 km/h after midnight. Mostly clear. Seas 1 m or less.
Tuesday
Variable winds less than 5 km/h becoming SE 9 to 14 km/h in the morning. Partly sunny. Seas 1 m or less.
Tuesday Night
E wind 14 to 18 km/h. Rain, mainly after 11pm. Seas 1 m or less.
Wednesday
SSE wind 26 to 29 km/h decreasing to 23 to 26 km/h in the afternoon. Winds could gust as high as 40 km/h. Rain, with thunderstorms also possible after 10am. Areas of fog. Seas 1 m or less.
Wednesday Night
SE wind 14 to 16 km/h becoming SW after midnight. A chance of rain and thunderstorms. Patchy fog before 2am. Seas 1 m or less.
Thursday
WSW wind around 24 km/h, with gusts as high as 32 km/h. Partly sunny. Seas 1 m or less.
Thursday Night
WSW wind 14 to 18 km/h. Partly cloudy. Seas 1 m or less.
Friday
W wind around 13 km/h becoming SSW in the afternoon. Mostly sunny. Seas 1 m or less.
Friday Night
S wind 13 to 18 km/h. Mostly cloudy. Seas 1 m or less.

*Notices:

  1. This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
  2. The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.
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ABOUT THIS FORECAST

Point Forecast: 40.91°N 73.39°W
Last Update: 3:30 pm EDT Apr 23, 2018
Forecast Valid: 8pm EDT Apr 23, 2018-6pm EDT Apr 30, 2018
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