Significant Snowfall for Washington Cascades and Northern Rocky Mountains

A cold front will linger for several days from the Pacific Northwest to portions of the northern Plains early this week. Cold temperatures and copious moisture will combine to produce several feet of snow into the mountain passes, with up to 4 feet of snow down to 4000 feet in the northern Rockies. Travel through mountain passes will be very difficult.
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Last Update: 831 PM PST Sun Dec 17 2017

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36NM SSE Point Arena CA

Marine Zone Forecast


Synopsis: PZZ500-181215- 831 PM PST Sun Dec 17 2017 .Synopsis for the Central California Coast and Bays Including the Monterey Bay...Greater Farallones...and Cordell Bank National Marine Sanctuaries... Surface high pressure 650 miles west of the Bay Area will gradually move southeast and weaken through early week. As a result winds will diminish tonight and remain mainly light Monday into Tuesday. South to southwest winds Tuesday precede the arrival of a moderate cold front Tuesday evening and early Wednesday morning. Modified arctic air and high pressure will build over the eastern Pacific and extend into the Intermountain West. Post cold frontal northwest winds will become gusty over the coastal waters and bays mid to late this week. A dry cold front will usher in a reinforcement of modified arctic air from the north and northeast beginning Saturday evening and continuing into early next week. $$

Tonight
N winds 10 kt...becoming southeast after midnight. Wind waves 2 ft or less. NW swell 4 to 6 ft at 12 seconds.
Mon
E winds 10 kt...becoming W in the afternoon. Wind waves 2 ft or less. NW swell 3 to 5 ft at 11 seconds.
Mon Night
NE winds 10 kt. Wind waves 2 ft or less. NW swell 4 to 6 ft at 13 seconds.
Tue
SW winds 10 kt. Wind waves 2 ft or less. NW swell 5 to 7 ft at 15 seconds.
Tue Night
W winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 6 to 7 ft at 15 seconds. Slight chance of rain in the evening, then rain likely after midnight.
Wed
NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 6 to 7 ft...becoming 5 to 7 ft. Slight chance of rain.
Thu
NW winds 5 to 15 kt. Wind waves 1 to 3 ft...becoming 2 ft or less. NW swell 5 to 7 ft.
Fri
NW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 3 to 5 ft.
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ABOUT THIS FORECAST

Last Update: 831 PM PST Sun Dec 17 2017
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