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.
Hazardous Weather Conditions
8NM ESE Waimanalo Beach HI
Marine Point Forecast [NOTICE]
...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.
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.
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.
HOURLY WEATHER GRAPH
NATIONAL DIGITAL FORECAST DATABASE