National Weather Service United States Department of Commerce

Heavy rain and mountain snow across the northwestern U.S. on Saturday

Another Pacific system will impact the West Coast today. Heavy rainfall could lead to flash flooding, river and small stream flooding as well as mudslides and debris flows, especially over burn scars. Strong winds and heavy elevation snowfall, with accumulations of 1 to 3 feet, could result in hazardous travel through mountain passes.
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Last Update: 300 PM CHST SAT DEC 20 2014

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Guam Coastal Waters

Marine Zone Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY WEDNESDAY
MORNING...


  • SynopsisFRESH TO STRONG TRADE WINDS AND COMBINED SEAS OF 10 TO 12 FEET WILL PRODUCE HAZARDOUS CONDITIONS FOR OPERATORS OF SMALL CRAFT FOR THE NEXT SEVERAL DAYS.
  • Tonight East wind 20 to 25 kt. Wind waves 6 ft. Mixed swell east 6 to 8 ft and north 6 ft.
  • Sunday East wind 20 to 25 kt. Wind waves 5 to 6 ft. Mixed swell east 6 to 8 ft and north 4 ft.
  • Sunday Night East wind 20 kt. Wind waves 4 to 6 ft. East swell 6 to 8 ft and north 4 ft.
  • Monday East wind 20 kt. Wind waves 4 to 5 ft. East swell 7 to 9 ft and north 4 ft.
  • Monday Night And Tuesday East wind 20 kt. Wind waves 5 to 6 ft. East swell 6 to 8 ft and north 3 ft.
  • Wednesday And Thursday East wind 20 kt. Wind waves 4 to 6 ft. East swell 6 to 8 ft.



Additional Forecasts and Information

Zone Area Forecast for Guam Coastal Waters
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