National Weather Service United States Department of Commerce

Powerful snowstorm, including blizzard conditions, forecast in parts of the Northeast Monday into Tuesday

The clipper system bringing snow to the Ohio Valley and mid-Atlantic Sunday and Monday will transition to a strong nor'easter Monday into Tuesday. Heavy snow and strong wind, even blizzard conditions, are possible in parts of the northern mid-Atlantic and New England. A Blizzard Watch is in effect from coastal New Jersey to Massachusetts. Winter Storm Watches stretch from Delaware to Maine.
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Last Update: 824 AM PST SUN JAN 25 2015

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Coastal Waters from Point Reyes to Pigeon Point California out to 10 nm

Marine Zone Forecast





  • SynopsisHIGH PRESSURE SHIFTS DOWNSTREAM AND WEAKENS OVER THE COASTAL WATERS THROUGH THE NEXT 24 HOURS. OFFSHORE FLOW WILL PERSIST INTO EARLY NEXT WEEK ALONG THE COASTLINE WITH SOUTHERLY FLOW PREVAILING FURTHER OFFSHORE. NORTHERLY WINDS RETURN LATE WEDNESDAY/EARLY THURSDAY. THE LARGE LONG PERIOD SWELL HAS TAPERED OFF BUT WILL CONTINUE TO IMPACT THE COASTAL WATERS THROUGH THIS AFTERNOON. THIS LONG PERIOD SWELL WILL RESULT IN LARGE BREAKERS NEAR BARS...SHOALS AND JETTIES LEADING TO HAZARDOUS CONDITIONS ALONG THE COAST.
  • Today E winds 10 kt. Wind waves 2 ft or less. W swell 6 to 8 ft at 15 seconds.
  • Tonight E winds 5 kt. Wind waves 2 ft or less. W swell 6 to 8 ft at 15 seconds.
  • Mon E winds 10 kt. Wind waves 2 ft or less. W swell 6 to 8 ft at 15 seconds.
  • Mon Night SE winds 10 kt. Wind waves 2 ft or less. W swell 5 to 7 ft at 15 seconds.
  • Tue SE winds 5 to 15 kt. Wind waves 1 to 3 ft...becoming 2 ft or less. W swell 5 to 7 ft at 15 seconds. Slight chance of showers in the afternoon.
  • Wed N winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 3 to 5 ft.
  • Thu NW winds 10 to 20 kt. Wind waves 2 to 4 ft. W swell 3 to 5 ft.

    .....san francisco bar/fourfathom bank forecast.....

    in the deep water channel...combined seas 6 to 8 feet with a dominant swell period of 15 seconds.

    across the bar...combined seas 7 to 9 feet with a dominant swell period of 15 seconds. Maximum ebb current of 1.8 knots at 07:39 pm sunday and 2.0 knots at 08:08 am monday.




.....SAN FRANCISCO BAR/FOURFATHOM BANK FORECAST..... IN THE DEEP WATER CHANNEL...COMBINED SEAS 6 TO 8 FEET WITH A DOMINANT SWELL PERIOD OF 15 SECONDS. ACROSS THE BAR...COMBINED SEAS 7 TO 9 FEET WITH A DOMINANT SWELL PERIOD OF 15 SECONDS. MAXIMUM EBB CURRENT OF 1.8 KNOTS AT 07:39 PM SUNDAY AND 2.0 KNOTS AT 08:08 AM MONDAY.

Additional Forecasts and Information

Zone Area Forecast for Coastal Waters from Point Reyes to Pigeon Point California out to 10 nm
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