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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Hazardous Weather Conditions

Last Update: 833 PM PST Fri Dec 15 2017

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Los Angeles/Oxnard, CA Local Forecast Office

18NM SW Long Beach CA

Marine Zone Forecast


Synopsis: PZZ600-161145- 833 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 04Z...or 8 PM PST...A 1035 MB high was located 500 NM W of Portland Oregon. 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 is also possible tonight in the outer waters. $$

Tonight
W to NW winds 5 to 10 kt, becoming 10 to 15 kt after midnight. Wind waves 2 ft or less. W swell 2 to 4 ft at 15 seconds. areas of smoke.
Sat
NW to N winds 10 to 15 kt. Wind waves 2 ft. W swell 2 to 4 ft at 15 seconds. Patchy fog in the morning. Areas of smoke.
Sat Night
NW winds 10 to 15 kt, becoming NE 10 to 15 kt late, except 15 to 20 kt from point mugu to santa monica. Wind waves 2 to 4 ft. W swell 4 to 6 ft at 11 seconds. Areas of smoke in the evening.
Sun
From point mugu to santa monica and S of palos verdes, NE winds 15 to 25 kt becoming 10 to 15 kt in the afternoon. Elsewhere, NE winds 10 to 20 kt, becoming 5 to 10 kt in the afternoon. Combined seas 4 to 6 ft dominant period 13 seconds.
Sun Night
N to NE winds 10 to 15 kt, becoming 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 2 to 3 ft at 12 seconds.
Mon
NE winds 5 to 10 kt, becoming W 10 kt in the afternoon. Wind waves 2 ft or less. W swell 2 to 3 ft.
Mon Night
W winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. W swell 2 to 3 ft.
Tue
Winds variable 10 kt or less early, becoming W to NW kt. Wind waves 2 ft or less. W swell 2 to 3 ft.
Wed
W to NW winds 10 to 15 kt early, becoming 15 to 20 kt. Wind waves 2 to 3 ft. W swell 3 to 5 ft.
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ABOUT THIS FORECAST

Last Update: 833 PM PST Fri Dec 15 2017
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