National Weather Service United States Department of Commerce

Unseasonably cold temperatures spreading into central U.S.

A strong cold front will usher a much colder air mass into the central and eastern U.S. for the end of the work week. Temperatures will be 10 to 20 degrees below average in some areas. Rain and snow will be possible across the Great Lakes on Friday as the system crosses the area. Heavy snow is possible in the central Appalachians Friday night.
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10NM SE San Francisco CA

Marine Point Forecast [NOTICE]

Today

Showers

NW 14kt
< 1ft

Tonight

Showers Likely

W 9kt
< 1ft

Saturday

Chance Showers

Winds IncreasingW 20kt
< 1ft

Saturday
Night

Patchy Fog

W 15ktWinds Decreasing
< 1ft

Sunday

Patchy Fog

Light Wind
< 1ft

Sunday
Night

Mostly Clear

W 7ktWinds Decreasing
< 1ft

Monday

Mostly Sunny

Light Wind
< 1ft

Monday
Night

Partly Cloudy

W 6kt
< 1ft

Tuesday

Mostly Sunny

Light Wind
< 1ft

Associated Zone Forecast which includes this point

Last Update: 2:51 am PDT Oct 31, 2014
Forecast Valid: 5am PDT Oct 31, 2014-6pm PST Nov 6, 2014

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Detailed Forecast



  • SynopsisLIGHT WIND AND SEAS ARE EXPECTED THROUGH LATE TONIGHT. WINDS WILL GRADUALLY INCREASE EARLY FRIDAY MORNING AS A STRONG COLD FRONT APPROACHES THE NORTHERN WATERS. WINDS WILL BRIEFLY INCREASE AHEAD AND JUST BEHIND THE FRONTAL PASSAGE AS RAIN MOVES FROM NORTH TO SOUTH THROUGH THE WATERS ON FRIDAY ALONG WITH A SLIGHT CHANCE OF THUNDERSTORMS. BEHIND THE FRONT LIGHTER NW WINDS ARE FORECAST FRIDAY EVENING. ON SATURDAY STRONGER NW WINDS AND BUILDING SEAS TO AROUND 10 FEET WILL DEVELOP CREATING SOME HAZARDOUS SEAS FOR THE START OF CRAB SEASON.
  • Today S wind 7 to 14 kt becoming NNW in the morning. Showers likely, then showers and possibly a thunderstorm after 11am. . Wind waves 1 ft or less.
  • Tonight W wind 7 to 9 kt. Showers likely and possibly a thunderstorm. Some of the storms could produce small hail. . Wind waves 1 ft or less.
  • Saturday W wind 6 to 11 kt increasing to 15 to 20 kt in the afternoon. Winds could gust as high as 28 kt. A chance of showers. . Wind waves 1 ft or less.
  • Saturday Night W wind 10 to 15 kt becoming variable and less than 5 kt in the evening. Winds could gust as high as 21 kt. Patchy fog after 11pm. . Wind waves 1 ft or less.
  • Sunday Variable winds 5 kt or less. Patchy fog before 8am. . Wind waves 1 ft or less.
  • Sunday Night W wind 5 to 7 kt becoming variable and less than 5 kt in the evening. Mostly clear. . Wind waves 1 ft or less.
  • Monday Variable winds 5 kt or less. Mostly sunny. . Wind waves 1 ft or less.
  • Monday Night W wind around 6 kt. Partly cloudy. . Wind waves 1 ft or less.
  • Tuesday Variable winds 5 kt or less. Mostly sunny. . Wind waves 1 ft or less.
*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.