Heavy Lake Effect Snow and Bitterly Cold Temperatures

A bitterly cold airmass will settle over much of the central and eastern U.S over the next several days. Well below normal temperatures and cold wind chills will be common. In addition, heavy lake effect snow will be possible especially downwind of Lakes Erie and Ontario, where up to one foot of additional snow is forecast by Sunday morning.
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19NM S San Francisco CA

Marine Point Forecast

[NOTICE]
  • This
    Afternoon

    Mostly Sunny

    Winds IncreasingNW 8kt
    6ft
  • Tonight

    Patchy Fog

    Light Wind
    7-9ft
  • Friday

    Patchy Fog

    Winds IncreasingNW 12kt
    10ft
  • Friday
    Night

    Partly Cloudy

    NNW 15kt
    10ft
  • Saturday

    Mostly Sunny

    NNW 14kt
    10ft
  • Saturday
    Night

    Partly Cloudy

    NNW 17kt
    9ft
  • Sunday

    Mostly Sunny

    NNW 8ktWinds Decreasing
    7-8ft
  • Sunday
    Night

    Mostly Clear

    NW 6kt
    6-7ft
  • Washington's
    Birthday

    Sunny

    NE 8kt
    5-6ft

Associated Zone Forecast which includes this point

Last Update: 2:24 am PST Feb 11, 2016
Forecast Valid: 12pm PST Feb 11, 2016-6pm PST Feb 17, 2016

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Detailed Forecast


Synopsis: GREATER FARALLONES...AND CORDELL BANK NATIONAL MARINE SANCTUARIES...

NORTHWEST WINDS WILL INCREASE THROUGH THE WEEKEND WITH THE EXCEPTION OF THE NORTHERN OUTER WATERS WHERE SOUTHWEST WINDS WILL PREVAIL. A LARGE LONG PERIOD NORTHWEST SWELL WILL BEGIN TO MOVE INTO THE AREA TODAY AND PERSIST INTO THE WEEKEND. THIS LARGE SWELL WILL RESULT IN VERY LARGE BREAKING WAVES NEAR OFFSHORE REEFS AND SAND BARS.

This Afternoon
Variable winds less than 5 kt becoming NW 5 to 8 kt. Mostly sunny. Mixed swell...W 6 ft at 12 seconds and SSW 1 ft at 16 seconds. Wind waves around 1 ft.
Tonight
Variable winds 5 kt or less. Patchy fog after 10pm. Mixed swell...W 9 ft at 19 seconds and SSW 1 ft at 16 seconds. Wind waves around 1 ft.
Friday
Variable winds less than 5 kt becoming NW 7 to 12 kt in the morning. Patchy fog before 10am. Mixed swell...W 10 ft at 18 seconds and SSW 1 ft at 16 seconds. Wind waves around 1 ft.
Friday Night
NNW wind 13 to 15 kt. Partly cloudy. Mixed swell...W 10 ft and SSW 1 ft. Wind waves around 2 ft.
Saturday
NNW wind 12 to 14 kt. Mostly sunny. Mixed swell...W 10 ft and SSW 1 ft. Wind waves 1 to 2 ft.
Saturday Night
NNW wind 9 to 17 kt. Partly cloudy. Mixed swell...W 9 ft and SSW 1 ft. Wind waves 1 to 2 ft.
Sunday
NNW wind 5 to 8 kt becoming variable and less than 5 kt in the morning. Mostly sunny. Mixed swell...W 7 to 8 ft and SSW 1 ft. Wind waves around 1 ft.
Sunday Night
NW wind around 6 kt. Mostly clear. Mixed swell...W 7 ft and S 1 ft. Wind waves around 1 ft.
Washington's Birthday
NE wind 6 to 8 kt. Sunny. W swell 5 to 6 ft. Wind waves around 1 ft.

.....SAN FRANCISCO BAR/FOURFATHOM BANK FORECAST..... IN THE DEEP WATER CHANNEL...COMBINED SEAS 4 TO 6 FEET AT 12 SECONDS...INCREASING TO 6 TO 8 FEET AT 20 SECONDS. ACROSS THE BAR...COMBINED SEAS 5 TO 7 FEET AT 12 SECONDS... INCREASING TO 7 TO 9 FEET AT 20 SECONDS...OCCASIONAL BREAKERS TO 15 FEET BEGINNING THIS EVENING. MAXIMUM EBB CURRENT OF 3.1 KNOTS AT 06:13 PM THURSDAY THIS EVENING AND 3.1 KNOTS AT 06:43 AM FRIDAY MORNING.

*Notices:

  1. This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
  2. The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.
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ABOUT THIS FORECAST

Point Forecast: 37.47°N 122.47°W
Last Update: 2:24 am PST Feb 11, 2016
Forecast Valid: 12pm PST Feb 11, 2016-6pm PST Feb 17, 2016
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