National Weather Service United States Department of Commerce

Rain, thunderstorms possible for parts of Texas and Gulf Coast; additional rain and mountain snow forecast out West

A developing storm system will bring rain and thunderstorms across parts of South Texas and the western Gulf Coast on Thursday. Some of the thunderstorms that develop late Thursday night into Friday have the potential to be severe. Meanwhile, additional rainfall and mountain snow is forecast for northern California and the Pacific Northwest.
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30NM WNW San Francisco CA

Marine Point Forecast [NOTICE]

Tonight

Rain

S 16kt
6ft

Friday

Rain

S 14kt
6-7ft

Friday
Night

Chance Showers

NW 9ktWinds Decreasing
11ftWaves Subsiding

Saturday

Slight Chc Showers

Winds IncreasingSSE 9kt
8ft

Saturday
Night

Chance Showers

SW 8kt
8ft

Sunday

Partly Sunny

Light Wind
8ft

Sunday
Night

Partly Cloudy

NNW 8kt
8ft

Monday

Mostly Sunny

NNW 10kt
8ft

Monday
Night

Partly Cloudy

NNW 11kt
7ft

Associated Zone Forecast which includes this point

Last Update: 2:23 pm PST Dec 18, 2014
Forecast Valid: 9pm PST Dec 18, 2014-6pm PST Dec 25, 2014

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Detailed Forecast



  • SynopsisSOUTHERLY WINDS THIS EVENING AHEAD OF AN APPROACHING FRONT THAT WILL SPREAD RAIN OVER THE NORTHERN WATERS TONIGHT. RAIN WILL SPREAD SOUTHWARD FRIDAY MORNING AS A COLD FRONT PASSES THROUGH THE WATERS WITH WINDS TURNING WESTERLY. BEHIND THE FRONT LARGE NW SWELLS WILL BUILD INTO THE WEEKEND. BUILDING HIGH PRESSURE WILL BRING LIGHTER WINDS OVER THE WEEKEND. THE COMBINATION OF LARGE SEAS AND UNUSUALLY HIGH TIDES WILL CREATE HAZARDOUS SEAS OVER THE OCEAN AND NEAR THE COAST FOR MUCH OF THE WEEKEND.
  • Tonight S wind 14 to 16 kt. Rain, mainly after 10pm. Mixed swell...WNW 6 ft at 13 seconds and SSW 1 ft at 15 seconds. Wind waves around 2 ft.
  • Friday S wind 10 to 14 kt. Rain, mainly before 10am. Mixed swell...WNW 6 ft at 14 seconds and WSW 2 ft at 15 seconds. Wind waves 1 to 2 ft.
  • Friday Night NW wind 5 to 9 kt becoming variable and less than 5 kt in the evening. A chance of showers before 4am. WNW swell 11 ft at 13 seconds becoming 7 ft at 18 seconds . Wind waves around 1 ft.
  • Saturday Variable winds less than 5 kt becoming SSE 5 to 9 kt in the morning. A slight chance of showers after 10am. WNW swell 8 ft. Wind waves around 1 ft.
  • Saturday Night SW wind around 8 kt. A chance of showers. WNW swell 8 ft. Wind waves around 1 ft.
  • Sunday Variable winds 5 kt or less. Partly sunny. WNW swell 8 ft. Wind waves around 1 ft.
  • Sunday Night NNW wind 6 to 8 kt. Partly cloudy. WNW swell 8 ft. Wind waves around 1 ft.
  • Monday NNW wind around 10 kt. Mostly sunny. WNW swell 8 ft. Wind waves around 1 ft.
  • Monday Night NNW wind around 11 kt. Partly cloudy. WNW swell 7 ft. Wind waves around 1 ft.

.....SAN FRANCISCO BAR/FOURFATHOM BANK FORECAST..... IN THE DEEP WATER CHANNEL...COMBINED SEAS 6 TO 8 FEET WITH A DOMINANT SWELL PERIOD OF 13 SECONDS. ACROSS THE BAR...COMBINED SEAS 7 TO 9 FEET WITH A DOMINANT SWELL PERIOD OF 13 SECONDS. MAXIMUM EBB CURRENT OF 1 KNOT AT 1:10 AM FRIDAY MORNING AND 2.4 KNOTS AT 1:04 PM FRIDAY AFTERNOON.

*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.