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.
Read More...

Last Update: 232 AM PST Mon Dec 18 2017

View Nearby Observations

For More Weather Information:

Los Angeles/Oxnard, CA Local Forecast Office

56NM SSW Santa Maria CA

Marine Zone Forecast


Synopsis: PZZ600-181745- 232 AM PST Mon Dec 18 2017 .Synopsis for the southern California coast and Santa Barbara Channel including the Channel Islands National Marine Sanctuary and National Park...at 10Z...or 2 AM PST...There was a 1026 MB high 550 NM W of Monterey, extending inland to a 1028 high over Nevada. Smoke from the Thomas Fire may reduce visibilities down to 2 NM for portions of the inner Coastal Waters. $$

Today
Winds variable 10 kt or less. Wind waves 2 ft or less. NW swell 5 to 6 ft at 12 seconds, subsiding to 4 ft at 11 seconds in the afternoon. Areas of smoke.
Tonight
NW winds 5 to 10 kt. Wind waves 2 ft or less. NW swell 4 to 5 ft at 11 seconds.
Tue
Winds variable 10 kt or less. Wind waves 2 ft or less. NW swell 4 to 5 ft at 13 seconds.
Tue Night
Winds variable 10 kt or less, becoming W 5 to 10 kt after midnight. Wind waves 2 ft or less. NW swell 6 to 7 ft at 15 seconds. Patchy fog after midnight.
Wed
W winds 10 to 15 kt, becoming N 15 to 20 kt with gusts to 25 kt in the afternoon. Wind waves 2 to 4 ft. NW swell 6 to 7 ft at 15 seconds. Patchy fog in the morning. Slight chance of showers in the afternoon.
Wed Night
N winds 15 to 25 kt with gusts to 30 kt. Combined seas 6 to 8 ft dominant period 15 seconds.
Thu
N winds 15 to 25 kt. Combined seas 6 to 8 ft.
Fri
NW winds 10 to 15 kt. Wind waves 2 ft or less. NW swell 4 to 6 ft.
  Click Map For Detailed Forecast

ABOUT THIS FORECAST

Last Update: 232 AM PST Mon Dec 18 2017
  Forecast Discussion
   

RADAR & SATELLITE IMAGES

Link to Local Radar Data Link to Satellite Data