National Weather Service United States Department of Commerce

Heavy rain and mountain snow across the northwestern U.S. this weekend

A Pacific storm system will continue to impact the Pacific Northwest through late Sunday. Heavy rainfall could lead to flash flooding, river and small stream flooding, as well as mudslides and debris flows, especially over burn scars. At higher elevations, strong winds and heavy snowfall, with accumulations of 1 to 3 feet, could result in hazardous travel through mountain passes.
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8NM ESE Waimanalo Beach HI

Marine Point Forecast [NOTICE]

Today

Sunny

Light Wind
2ft

High: 79 °F

Small Craft Advisory
Small Craft Advisory

Tonight

Mostly Clear

NW 9kt
9-10ft

Low: 77 °F

Small Craft Advisory
Small Craft Advisory

Monday

Scattered Showers

NNE 18kt
10ft

High: 79 °F

Small Craft Advisory
Small Craft Advisory

Monday
Night

Heavy Rain

NNE 23kt
11ft

Low: 77 °F

Small Craft Advisory
Small Craft Advisory

Tuesday

Heavy Rain

NNE 26kt
9-10ft

High: 78 °F

Tuesday
Night

Scattered Showers

NE 25kt
9ft

Low: 76 °F

Wednesday

Scattered Showers

NE 22kt
10ft

High: 78 °F

Wednesday
Night

Isolated Showers

NE 18kt
8ft

Low: 77 °F

Christmas
Day

Isolated Showers

NE 18kt
6-7ft

High: 78 °F

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 10:02 am HST Dec 21, 2014
Forecast Valid: 11am HST Dec 21, 2014-6pm HST Dec 27, 2014

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM HST TUESDAY...

  • SynopsisAN APPROACHING FRONT WILL MOVE OVER KAUAI TONIGHT THEN STALL AND WEAKEN NEAR MAUI AND THE BIG ISLAND MONDAY AND TUESDAY BEFORE DISSIPATING WEDNESDAY. STRONG HIGH PRESSURE WILL FOLLOW ON THE HEELS OF THE FRONT.
  • Today Variable winds 5 kt or less. Sunny. . Waves around 2 ft.
  • Tonight NNW wind 7 to 9 kt becoming E after midnight. Mostly clear. Mixed swell...NW 10 ft at 17 seconds and SSW 2 ft at 14 seconds. Waves 9 to 10 ft.
  • Monday NNE wind 14 to 18 kt, with gusts as high as 24 kt. Scattered showers, with thunderstorms also possible after noon. Mixed swell...NW 11 ft at 16 seconds and SSW 2 ft at 14 seconds. Waves around 10 ft.
  • Monday Night NNE wind 21 to 23 kt, with gusts as high as 31 kt. Scattered showers and thunderstorms. Some of the storms could produce heavy rainfall. Mixed swell...NW 9 ft and S 2 ft. Waves around 11 ft.
  • Tuesday NNE wind 22 to 26 kt, with gusts as high as 35 kt. Scattered showers and thunderstorms. Some of the storms could produce heavy rainfall. Mixed swell...NW 7 ft and S 1 ft. Waves 9 to 10 ft.
  • Tuesday Night NE wind around 25 kt, with gusts as high as 33 kt. Scattered showers. Mixed swell...NW 4 to 5 ft and S 1 ft. Waves around 9 ft.
  • Wednesday NE wind around 22 kt, with gusts as high as 28 kt. Scattered showers, mainly before noon. Mixed swell...NW 7 ft and S 1 ft. Waves around 10 ft.
  • Wednesday Night NE wind around 18 kt. Isolated showers. Mixed swell...NNW 5 ft and S 1 ft. Waves around 8 ft.
  • Christmas Day NE wind 15 to 18 kt. Isolated showers. Mixed swell...NNW 4 ft and S 1 ft. Waves 6 to 7 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.