National Weather Service United States Department of Commerce

Rain, thunderstorms possible for parts of Texas and Gulf Coast; additional rain and mountain snow forecast out West

A developing storm system will bring rain and thunderstorms across parts of South Texas and the western Gulf Coast on Thursday. Some of the thunderstorms that develop late Thursday night into Friday have the potential to be severe. Meanwhile, additional rainfall and mountain snow is forecast for northern California and the Pacific Northwest.
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Last Update: 332 PM HST THU DEC 18 2014

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Big Island Windward Waters

Marine Zone Forecast

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM HST FRIDAY...



  • SynopsisHIGH PRESSURE FAR NORTHEAST OF THE ISLANDS WILL MOVE EAST THROUGH SATURDAY...WITH AN ASSOCIATED SURFACE RIDGE REMAINING ABOUT 350 NM NORTH OF KAUAI THROUGH FRIDAY. THE RIDGE WILL SHIFT SOUTH AND EAST ON SATURDAY AND SUNDAY AS A FRONT APPROACHES. THE FRONT WILL MOVE OVER THE ISLANDS FROM SUNDAY NIGHT THROUGH TUESDAY.
  • Tonight East winds 20 kt. Wind waves 8 ft. Northwest swell 8 ft. Isolated showers.
  • Friday East winds 20 kt. Wind waves 8 ft. Northwest swell 6 ft. Isolated showers in the morning.
  • Friday Night East winds 15 kt. Wind waves 6 ft. Northwest swell 5 ft. Isolated showers.
  • Saturday East winds 20 kt. Wind waves 6 ft. Northwest swell 4 ft. Scattered showers in the morning...then isolated showers in the afternoon.
  • Saturday Night East winds 15 kt. Wind waves 5 ft. Northwest swell 3 ft. Isolated showers.
  • Sunday East winds 15 kt. Wind waves 5 ft. Northwest swell 4 ft increasing to 8 ft early in the afternoon. Isolated showers through the day.
  • Sunday Night East winds 15 kt. Wind waves 5 ft. Northwest swell 9 ft. Scattered showers.
  • Monday East winds 15 kt backing north. Wind waves 4 to 5 ft. Northwest swell 10 to 11 ft. Scattered showers.
  • Tuesday North winds 15 kt. Wind waves 6 to 7 ft. Northwest swell 10 to 11 ft. Scattered showers.



Additional Forecasts and Information

Zone Area Forecast for Big Island Windward Waters
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