Forecast for West Slopes Northern Cascades and Passes
Tonight
Snow showers...heavy at times this evening. Cloudy with a chance of showers after midnight. Snow level 2000 feet. Additional snow accumulation through this evening up to 5 inches with total storm snowfall 1 to 2 feet. Breezy with west wind in the passes 15 to 25 mph diminishing overnight.
Monday
Light rain or snow developing in the afternoon. Snow level 2500 feet. Snow accumulation up to 2 inches. Afternoon pass temperatures in the mid 30s. West wind to 10 mph becoming southeast in the passes by afternoon.
Monday Night
Rain and snow at times turning to showers. Snow level 5000 feet. Snow accumulation up to 4 inches. Variable wind 10 mph in the passes.
Tuesday
Cloudy with a chance of showers. Snow level 5000 feet. Afternoon pass temperatures in the 30s. Light wind.
Tuesday Night through Wednesday Night
Mostly cloudy with a chance of rain. Snow level 5000 feet. Afternoon pass temperatures in the 30s.
Saturday through Sunday
Mostly cloudy with a chance of showers. Snow level 3000 feet.
Marine Forecast for Puget Sound And Hood Canal-
Tonight SW wind 15 to 25 kt...then becoming S 10 to 20 kt late this evening. Wind waves 2 to 4 ft...subsiding to 1 to 3 ft. Chance of showers in the evening. Chance of rain after midnight.
Mon S wind 10 to 20 kt. Wind waves 1 to 3 ft. Chance of rain in the morning...then rain in the afternoon.
Mon Night S wind 10 to 20 kt. Wind waves 1 to 3 ft. Rain likely in the evening...then scattered showers after midnight.
... Winter Storm Warning now in effect until 9 PM PST this evening...
The Winter Storm Warning is now in effect until 9 PM PST this evening.
A vigorous Pacific frontal system brought 8 to 16 inches of snow to the Cascades overnight with strong winds in some areas overnight. 6 to 12 inches of snow is expected today with increasing westerly winds. The snow will be around 2000 feet... and westerly winds 20 to 30 mph will develop as low pressure moves inland and higher pressure builds into the area. With heavy snow showers and windy conditions at times... the visibility may drop to near zero in the more exposed locations. People crossing the mountain passes should expect wintertime driving conditions. Skiers and back-country travelers can expect reduced visibility on the ridge-tops by this afternoon as westerly winds increase.
Precautionary/preparedness actions...
A Winter Storm Warning means significant amounts of snow... sleet... and ice are expected or occurring. Strong winds are also possible. This will make travel hazardous or impossible. If you plan to travel into the Cascades be prepared for hazardous driving conditions... long delays... and Road closures.
Winter Storm Warning