Heavy rain, mountain snow and strong winds in the western U.S. this week

The western U.S. will experience active weather yet again this week as significant Pacific moisture brings rain and mountain snow to the region. This heavy rain will bring flood concerns to parts of WA, OR and CA. Very heavy snow is possible in the Sierra, Cascades, Great Basin and parts of the northern Rockies.
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Honolulu, HI Local Forecast Office

8NM ESE Waimanalo Beach HI

Marine Point Forecast

[NOTICE]
  • Today

    Mostly Sunny

    E 21kt
    7-9ft

    High: 77 °F

    Small Craft Advisory
    Small Craft Advisory

  • Tonight

    Partly Cloudy

    E 19kt
    8-9ft

    Low: 76 °F

    Small Craft Advisory
    Small Craft Advisory

  • Thursday

    Mostly Sunny

    E 18kt
    6-8ft

    High: 76 °F

  • Thursday
    Night

    Mostly Clear

    ENE 17kt
    6-7ft

    Low: 75 °F

  • Friday

    Isolated Showers

    NNE 8kt
    5-6ft

    High: 76 °F

  • Friday
    Night

    Isolated Showers

    NNE 19kt
    5ft

    Low: 75 °F

  • Saturday

    Scattered Showers

    NE 29kt
    Waves Building10ft

    High: 75 °F

  • Saturday
    Night

    Scattered Showers

    ENE 29kt
    Waves Building14ft

    Low: 74 °F

  • Sunday

    Scattered Showers

    ENE 29kt
    14-15ft

    High: 75 °F


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:48 am HST Jan 18, 2017
Forecast Valid: 5am HST Jan 18, 2017-6pm HST Jan 24, 2017

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY THURSDAY

Synopsis: A SURFACE RIDGE WILL REMAIN NORTH OF THE STATE TODAY...THEN WEAKEN THURSDAY AND FRIDAY AS A FRONT APPROACHES THE ISLANDS FROM THE NORTHWEST. THE FRONT WILL MOVE DOWN THE ISLAND CHAIN SATURDAY AND SATURDAY NIGHT USHERING IN STRONG AND GUSTY NORTHEAST WINDS AND LARGE ROUGH SEAS. A LARGE NORTHWEST SWELL WILL ARRIVE ACROSS THE COASTAL WATERS LATER TODAY...THEN CONTINUE TONIGHT INTO THURSDAY.

Today
E wind around 21 kt, with gusts as high as 27 kt. Mostly sunny. Mixed swell...NW 3 to 4 ft at 19 seconds and S 1 ft at 12 seconds. Waves 7 to 9 ft.
Tonight
E wind 16 to 19 kt. Partly cloudy. Mixed swell...NW 4 ft at 16 seconds and S 1 ft at 11 seconds. Waves 8 to 9 ft.
Thursday
E wind 16 to 18 kt. Mostly sunny. Mixed swell...NW 3 ft at 15 seconds and S 1 ft at 11 seconds. Waves 6 to 8 ft.
Thursday Night
ENE wind 12 to 17 kt. Mostly clear. Mixed swell...NNW 3 ft and S 1 ft. Waves 6 to 7 ft.
Friday
E wind around 8 kt becoming NNE in the afternoon. Isolated showers. Mixed swell...NNW 3 ft and S 1 ft. Waves 5 to 6 ft.
Friday Night
NNE wind 15 to 19 kt. Isolated showers. Mixed swell...NW 3 ft and S 1 ft. Waves around 5 ft.
Saturday
NE wind 25 to 29 kt, with gusts as high as 38 kt. Scattered showers. Mixed swell...N 3 ft and S 1 ft. Waves 5 ft building to 10 ft.
Saturday Night
ENE wind around 29 kt, with gusts as high as 38 kt. Scattered showers. Mixed swell...N 5 to 7 ft and S 1 ft. Waves 10 ft building to 14 ft.
Sunday
ENE wind around 29 kt, with gusts as high as 38 kt. Scattered showers. Mixed swell...N 7 ft and S 1 ft becoming N. Waves 14 to 15 ft.

*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: 21.27°N 157.55°W
Last Update: 2:48 am HST Jan 18, 2017
Forecast Valid: 5am HST Jan 18, 2017-6pm HST Jan 24, 2017
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