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: 852 AM PST SAT DEC 20 2014

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Monterey Bay

Marine Zone Forecast





  • SynopsisLARGE LONG PERIOD SWELLS FROM A POTENT GULF OF ALASKA STORM WILL CONTINUE TO IMPACT THE COASTAL WATERS THROUGH THE DAY. THIS SWELL WILL RESULT IN LARGE BREAKING WAVES ACROSS THE SAN FRANCISCO BAR AND OFFSHORE REEFS AND ROCK OUTCROPPINGS AS WELL AS HAZARDOUS SEAS OFFSHORE. MARINERS ARE URGED TO USE CAUTION WHILE NAVIGATING THE COASTAL WATERS THROUGH TODAY. SURFACE HIGH PRESSURE WILL BUILD OFF THE CALIFORNIA COAST TONIGHT INTO EARLY NEXT WEEK RESULTING IN INCREASING NORTHWEST WINDS OVER THE SOUTHERN WATERS BEGINNING SUNDAY.
  • Today E winds 10 kt...becoming W in the afternoon. Wind waves less than 2 ft. NW swell 13 to 16 ft at 17 seconds. Slight chance of showers.
  • Tonight W winds 5 to 15 kt...becoming SE 5 kt after midnight. Wind waves less than 2 ft. NW swell 12 to 13 ft at 16 seconds. Slight chance of showers.
  • Sun E winds 5 kt...becoming NW 5 to 15 kt in the afternoon. Wind waves less than 2 ft...becoming 3 ft in the afternoon. NW swell 9 to 12 ft at 14 seconds.
  • Sun Night NW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 10 to 11 ft at 14 seconds.
  • Mon N winds 5 kt. Wind waves less than 2 ft. W swell 7 to 9 ft at 14 seconds.
  • Tue NE winds 5 kt. Wind waves less than 2 ft. W swell 7 to 9 ft.
  • Wed E winds 5 kt...becoming NW 5 to 15 kt. Wind waves less than 2 ft. W swell 8 to 10 ft. Slight chance of rain.



Additional Forecasts and Information

Zone Area Forecast for Monterey Bay
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