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: 209 AM PST Mon Dec 18 2017

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San Diego, CA Local Forecast Office

18NM SSW Oceanside CA

Marine Zone Forecast


Synopsis: PZZ700-182300- 209 AM PST Mon Dec 18 2017 .Synopsis for the far southern California coast... At 1 AM, A 1030 mb high was over Utah and a 1017 mb low was over Ensenada Mexico. Offshore flow will prevail through Tuesday except for northwest winds during the afternoons. A cold front will increase onshore flow Wednesday with winds possibly hazardous to small craft Wednesday afternoon and night. Offshore flow will quickly develop Thursday and weaken by Friday. $$

Today
Wind E to 10 kt...becoming W with gusts to 15 kt in the afternoon. Wind waves 2 ft or less. Swell W 1 to 2 ft at 12 seconds.
Tonight
Wind N to 10 kt...becoming SE after midnight. Wind waves 2 ft or less. Swell W 1 to 2 ft at 11 seconds.
Tue
Wind SE 10 kt in the morning...becoming variable less than 10 kt. Wind waves 2 ft or less. Swell W 1 to 2 ft at 13 seconds.
Tue Night
Wind variable less than 10 kt. Wind waves 2 ft or less. Swell W 1 to 2 ft at 15 seconds.
Wed
Wind NW to 10 kt...becoming 10 to 15 kt with gusts to 20 kt in the afternoon. Wind waves 2 ft or less. Swell W 1 to 2 ft at 14 seconds.
Wed Night
Wind NW 10 to 15 kt with gusts to 20 kt. Wind waves 4 ft. Swell W 1 to 4 ft. Slight chance of showers in the evening.
Thu
Wind N 10 kt. Gusts to 15 kt in the morning. Wind waves 2 ft or less. Swell NW 4 to 6 ft.
Thu Night
Wind NE 10 kt. Gusts to 15 kt in the evening. Wind waves 2 ft or less. Swell NW 2 to 4 ft.
Fri
Wind variable less than 10 kt. Wind waves 2 ft or less. Swell W 1 to 2 ft.
Fri Night
Wind W 10 kt. Wind waves 2 ft or less. Swell W 1 ft.
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ABOUT THIS FORECAST

Last Update: 209 AM PST Mon Dec 18 2017
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