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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5NM NNW San Francisco CA

Marine Point Forecast

[NOTICE]
  • Today

    Heavy Rain

    S 18kt

    Small Craft Advisory
    Small Craft Advisory

  • Tonight

    Heavy Rain

    SSE 29ktWinds Decreasing

    Gale Warning
    Gale Warning

  • Thursday

    Scattered Showers

    W 8kt
  • Thursday
    Night

    Heavy Rain

    SW 13kt
  • Friday

    Heavy Rain

    SE 22kt
  • Friday
    Night

    Chance Showers

    W 19kt
  • Saturday

    Slight Chc Showers

    W 11kt
  • Saturday
    Night

    Chance Showers

    S 16kt
  • Sunday

    Rain

    SSE 20ktWinds 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 10 to 18 kt. Rain likely, then rain and possibly a thunderstorm after 4pm. Some of the storms could produce heavy rainfall.
Tonight
SSE wind 24 to 29 kt becoming W 11 to 16 kt after midnight. Winds could gust as high as 38 kt. Showers and possibly a thunderstorm before 10pm, then scattered showers. Some of the storms could produce heavy rainfall.
Thursday
W wind 5 to 8 kt becoming SSW in the morning. Scattered showers.
Thursday Night
SW wind around 13 kt. Rain, mainly after 10pm. The rain could be heavy at times.
Friday
SE wind 18 to 22 kt becoming WSW in the morning. Winds could gust as high as 29 kt. Rain. The rain could be heavy at times.
Friday Night
W wind 14 to 19 kt, with gusts as high as 25 kt. A chance of showers.
Saturday
W wind around 11 kt. A slight chance of showers.
Saturday Night
S wind 13 to 16 kt. A chance of showers.
Sunday
SSE wind 15 to 20 kt becoming SW 8 to 13 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: 37.83°N 122.45°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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