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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Last Update: 253 AM PDT FRI OCT 31 2014

View Nearby Observations

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

Marine Zone Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM THIS MORNING TO 2 PM
PDT THIS AFTERNOON...


  • 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 NW winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 4 to 6 ft at 12 seconds. Rain in the morning...then showers and slight chance of thunderstorms in the afternoon.
  • Tonight NW winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 5 to 7 ft at 14 seconds. Slight chance of thunderstorms in the evening. Showers likely through the night.
  • Sat NW winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 6 to 8 ft at 13 seconds. Chance of showers.
  • Sat Night NW winds 10 to 20 kt. Wind waves 2 to 4 ft. W swell 7 to 9 ft at 12 seconds.
  • Sun NW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 6 to 8 ft at 11 seconds.
  • Mon NW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 4 to 6 ft.
  • Tue NW winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 5 to 7 ft. SW swell 3 ft.

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

    in the deep water channel...combined seas 2 to 4 feet with a dominant swell period of 12 seconds.

    across the bar...combined seas 3 to 5 feet with a dominant swell period of 10 seconds. Maximum ebb current of 1.3 knots at 10:58 am friday and 1.6 knots at 10:08 pm friday.



Additional Forecasts and Information

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