Expanded California Fire Weather Threats; Unsettled Across the West

A storm system will impact the western third of the U.S.. Strong, gusty winds will increase Fire Weather threats across much of western and central California. Rain and mountain snows can be expected across the Pacific Northwest and Northern Rockies, with wintry conditions in the Great Basin and High Plains. Accumulating snows will also continue across the Upper Midwest to the Northeast.
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Last Update: 207 PM PST Fri Dec 15 2017

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Los Angeles/Oxnard, CA Local Forecast Office

38NM WSW Cambria CA

Marine Zone Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM PST THIS EVENING THROUGH

Synopsis: PZZ600-160730- 207 PM PST Fri Dec 15 2017 .Synopsis for the southern California coast and Santa Barbara Channel including the Channel Islands National Marine Sanctuary and National Park...at 21Z...or 1 PM PST...A 1033 MB high was centered in Colorado, and a 1036 MB high was 600 NM W of Portland. A weak trough of low pressure was located along the CA coast. Increasing NW flow is expected in the outer and northern waters tonight into the weekend as high pressure builds into the eastern Pacific. Gale force winds are expected across the outer waters late tonight through Sat night. Gusty NE winds are likely near shore from Ventura to Santa Monica Sat night and Sun. Smoke from the Thomas fire may locally reduce visibilities down to 2 NM for portions of the coastal waters S of Point Conception at least through Sat. Patchy dense fog with visibilities 1 nm or less will also be possible tonight in the outer waters. $$

Tonight
NW winds increasing to 10 to 20 kt with gusts to 25 kt in the evening, becoming 20 to 30 kt with local gusts to 40 kt after midnight. Strongest western portion. Combined seas 8 to 10 ft dominant period 15 seconds. Patchy dense fog with vsby 1 nm or less.
Sat
NW winds 20 to 30 kt with gusts to 40 kt. Strongest western portion. Combined seas 12 to 15 ft dominant period 15 seconds, building to 14 to 17 ft dominant period 11 seconds in the afternoon. patchy fog in the morning.
Sat Night
NW winds 20 to 30 kt with gusts to 40 kt, becoming N 15 to 25 kt with gusts to 35 kt after midnight. Strongest western portion. Combined seas 15 to 18 ft dominant period 11 seconds, subsiding to 13 to 16 ft dominant period 11 seconds after midnight.
Sun
N winds 15 to 25 kt with gusts to 30 kt, becoming NW 10 to 15 kt with gusts to 20 kt in the afternoon. Combined seas 12 to 15 ft dominant period 11 seconds, subsiding to 10 to 12 ft dominant period 11 seconds in the afternoon.
Sun Night
NW winds 10 to 15 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. NW swell 7 to 9 ft at 11 seconds.
Mon
Winds variable 10 kt or less. Wind waves 2 ft or less. NW swell 5 to 7 ft.
Mon Night
Winds variable 10 kt or less. Wind waves 2 ft or less. NW swell 4 to 5 ft.
Tue
NW winds 10 to 15 kt. Wind waves 2 ft or less. NW swell 5 to 7 ft.
Wed
NW winds 15 to 25 kt with gusts to 30 kt. Combined seas 8 to 11 ft.
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ABOUT THIS FORECAST

Last Update: 207 PM PST Fri Dec 15 2017
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