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 West Coast through 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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Last Update: 329 PM HST SAT DEC 20 2014

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Big Island Windward Waters

Marine Zone Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM SUNDAY TO 6 AM HST
TUESDAY...


  • SynopsisA SURFACE RIDGE NORTH OF KAUAI WILL MOVE SOUTH SLOWLY THROUGH SUNDAY AS A FRONT APPROACHES. THE FRONT WILL MOVE OVER THE ISLANDS SUNDAY NIGHT THROUGH TUESDAY...POSSIBLY BRINGING STRONG CONVECTION.
  • Tonight East winds 15 kt. Wind waves 6 ft. Northwest swell 3 ft. Isolated showers.
  • Sunday East winds 15 kt. Wind waves 5 ft. Northwest swell 10 ft. Isolated showers in the morning.
  • Sunday Night East winds 10 kt. Wind waves 4 ft. Northwest swell 12 ft. Scattered showers.
  • Monday East winds 15 kt. Wind waves 3 ft. Northwest swell 12 ft. Scattered showers in the morning...then isolated showers in the afternoon.
  • Monday Night Northeast winds 15 kt. Wind waves 4 ft. Northwest swell 10 ft. Scattered heavy showers through the night. Slight chance of thunderstorms after midnight.
  • Tuesday Northeast winds 20 kt. Wind waves 6 ft. Northwest swell 8 ft. Scattered heavy showers and slight chance of thunderstorms.
  • Tuesday Night Northeast winds to 25 kt. Wind waves 9 ft. Northwest swell 7 ft. Scattered heavy showers and slight chance of thunderstorms.
  • Wednesday Northeast winds 20 kt. Wind waves 8 to 9 ft. Northwest swell 5 to 6 ft. Scattered showers.
  • Thursday Northeast winds 15 kt. Wind waves 6 to 8 ft. Northwest swell 3 to 4 ft. Isolated showers.



Additional Forecasts and Information

Zone Area Forecast for Big Island Windward Waters
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