Heavy rain, mountain snow and strong winds in the western U.S. this week

The western U.S. will experience active weather yet again this week as significant Pacific moisture brings rain and mountain snow to the region. This heavy rain will bring flood concerns to parts of WA, OR and CA. Very heavy snow is possible in the Sierra, Cascades, Great Basin and parts of the northern Rockies.
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12NM N San Francisco CA

Marine Point Forecast

[NOTICE]
  • Today

    Heavy Rain

    S 20kt

    Small Craft Advisory
    Small Craft Advisory

  • Tonight

    Heavy Rain

    SSE 34ktWinds Decreasing

    Gale Warning
    Gale Warning

  • Thursday

    Chance Showers

    Light Wind
  • Thursday
    Night

    Heavy Rain

    SSW 10kt
  • Friday

    Heavy Rain

    SE 30ktWinds Decreasing
  • Friday
    Night

    Chance Showers

    W 11kt
  • Saturday

    Chance Showers

    Light Wind
  • Saturday
    Night

    Chance Showers

    S 15kt
  • Sunday

    Rain

    SSE 18ktWinds Decreasing

Associated Zone Forecast which includes this point

Last Update: 5:15 am PST Jan 18, 2017
Forecast Valid: 7am PST Jan 18, 2017-6pm PST Jan 24, 2017

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Detailed Forecast


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

SOUTHERLY WINDS WILL INCREASE BY WEDNESDAY AHEAD OF A FRONTAL SYSTEM. WINDS WILL DECREASE LATE WEDNESDAY NIGHT AS THE LOW LIFTS NORTHEAST BUT WILL INCREASE AGAIN BY FRIDAY AS ANOTHER STORM APPROACHES. VERY LARGE WEST SWELLS WILL ARRIVE LATER THIS WEEK WITH SWELLS BUILDING AS HIGH AS 26 FEET FRIDAY AND SATURDAY.

Today
S wind 13 to 20 kt, with gusts as high as 26 kt. Rain, with thunderstorms also possible after 4pm. Some of the storms could produce heavy rainfall.
Tonight
SSE wind 24 to 34 kt becoming W 8 to 13 kt in the evening. Winds could gust as high as 44 kt. Showers and possibly a thunderstorm before 10pm, then scattered showers. Some of the storms could produce heavy rainfall.
Thursday
Variable winds 5 kt or less. A chance of showers, mainly after 4pm.
Thursday Night
SSW wind 8 to 10 kt. Rain, mainly after 10pm. The rain could be heavy at times.
Friday
SE wind 25 to 30 kt becoming WSW 14 to 19 kt in the morning. Winds could gust as high as 39 kt. Rain. The rain could be heavy at times.
Friday Night
W wind 7 to 11 kt. A chance of showers.
Saturday
Variable winds 5 kt or less. A chance of showers.
Saturday Night
S wind 12 to 15 kt. A chance of showers.
Sunday
SSE wind 13 to 18 kt becoming SSW 5 to 10 kt in the morning. Rain.

*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: 37.97°N 122.46°W
Last Update: 5:15 am PST Jan 18, 2017
Forecast Valid: 7am PST Jan 18, 2017-6pm PST Jan 24, 2017
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