National Weather Service United States Department of Commerce

Cold Front Crossing the Central U.S.

A cold front over the Northern Rockies will move eastward to the Upper Mississippi Valley/Central Plains by Monday. Rain will develop along the boundary over the Upper Midwest and move into the Upper Great Lakes by Monday. Some of the thunderstorms could become severe in portions of Texas through Monday.
Read More...

Last Update: 931 PM PDT SUN APR 20 2014

View Nearby Observations

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

Marine Zone Forecast

...SMALL CRAFT ADVISORY FOR ROUGH BAR IN EFFECT UNTIL 5 AM PDT
MONDAY........SAN FRANCISCO BAR/FOURFATHOM BANK FORECAST.....



  • SynopsisHIGH PRESSURE WILL CONTINUE TO WEAKEN OVER NORTHERN CALIFORNIA TONIGHT. LARGE NORTHWEST SWELL CONTINUE TO AFFECT THE COAST THROUGH EARLY MONDAY MORNING. AN UPPER LEVEL TROUGH WILL BRING INCREASING NORTHWEST WINDS ON TUESDAY. WINDS WILL REMAIN UP ON WEDNESDAY BEFORE DECREASING THURSDAY.
  • Tonight NW winds 10 to 20 kt. Wind waves 2 to 4 ft. W swell 8 to 10 ft at 15 seconds and SW 3 ft at 16 seconds. Patchy fog after midnight.
  • Mon NW winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 7 to 9 ft at 14 seconds and SW 3 ft at 15 seconds. Patchy fog in the morning.
  • Mon Night NW winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 6 to 8 ft at 14 seconds and SW 3 ft at 15 seconds. Slight chance of showers.
  • Tue NW winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 6 to 8 ft at 14 seconds. Slight chance of showers in the morning.
  • Tue Night NW winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 5 to 7 ft at 14 seconds.
  • Wed NW winds 10 to 20 kt. Wind waves 2 to 4 ft. W swell 6 to 8 ft.
  • Thu W winds 10 kt. Wind waves 2 ft or less. NW swell 4 to 6 ft...shifting to the W 5 to 7 ft. Slight chance of rain.
  • Fri SW winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 5 to 7 ft. SW swell 3 ft. Chance of rain...then slight chance of showers.

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

    in the deep water channel...combined seas 9 to 11 feet with a dominant period of 16 seconds becoming 7 to 9 feet with a dominant period of 13 seconds monday.

    across the bar...combined seas 10 to 12 feet with a dominant period of 16 seconds becoming 8 to 10 feet with a dominant period of 13 seconds monday. Maximum ebb current of 2.1 knots at 08:05 am monday and 1.2 knots at 10:24 pm monday.



Additional Forecasts and Information

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