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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Last Update: 353 AM PST WED JAN 18 2017

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3NM NNE San Francisco CA

Marine Zone Forecast


...SMALL CRAFT ADVISORY IN EFFECT FROM 1 PM PST THIS AFTERNOON THROUGH THIS EVENING...
...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH LATE TONIGHT...
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 winds 5 to 15 kt...increasing to 15 to 25 kt in the afternoon. Isolated showers early in the morning...then chance of rain in the morning. Rain in the afternoon.
Tonight
SE winds 25 to 35 kt with occasional gusts to 50 kt... Becoming SW 15 to 25 kt after midnight. Rain and slight chance of thunderstorms in the evening...then rain likely after midnight.
Thu
S winds 10 kt. Scattered showers in the morning...then isolated showers in the afternoon.
Thu Night
SW winds 5 to 15 kt. Chance of showers in the evening...then rain after midnight.
Fri
S winds 20 to 30 kt...becoming W 5 to 15 kt. Rain.
Sat
S winds 5 to 15 kt. Slight chance of showers.
Sun
SE winds 15 to 25 kt...becoming SW 5 to 15 kt. Rain.
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ABOUT THIS FORECAST

Last Update: 353 AM PST WED JAN 18 2017
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