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© NOAA
Up to 162″ of snow (13.5-feet) is currently forecast to fall on 14,411-foot Mt. Rainer in Washington state in the next 3 days. That huge snowfall total is due to an atmospheric river that will be "slamming" into Washington this weekend.
THE PRECIPITATION BULLSEYE OVER MOUNT RAINIER IS MORE THAN 20 INCHES IN 48 HOURS IN THE WETTEST MESOSCALE MODELS. - NOAA Seattle, WA today
Even 10,000-foot Mt. Baker is forecast to get 70″ of snow in the next 3 days... This is gonna be a crazy weekend in Washington state.

Snow levels will start high but will drop to as low as 4,000-feet by Sunday.
SNOW LEVELS WILL DROP TO AROUND 4000 FEET ON SUNDAY WITH A FEW INCHES OF SNOW POSSIBLE IN THE MOUNTAINS. - NOAA Seattle, WA
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See that white spot southeast of Olympia? That’s Rainier… Over 15″ of liquid precip… crazy.
Some models are even showing up to 20-inches of liquid precipitation (which would translate to about 20-feet of snow) in only 48 hours on Sunday.
"A pair of frontal systems with a significant tap of Pacific moisture will move through western Washington this weekend. They will bring heavy rain at times with the mountains receiving 4 to 8 inches of precipitation with locally higher amounts possible near Mount Rainier. Snow levels will remain high through Saturday before falling on Sunday as a cool upper level trough digs into the region. In addition to the precipitation, windy conditions at times are expected for much of the region." - NOAA Seattle, WA
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© NOAAImage of the atmospheric river hitting Washington today.

If you live in Washington, please be careful this weekend. NOAA has issued a flood watch as up to 8″ of rain are forecast for the next 3 days. Stay away from rivers and streams.
FLOOD WATCH NATIONAL WEATHER SERVICE SEATTLE WA 404 AM PDT FRI OCT 30 2015 ...FLOOD WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH SUNDAY AFTERNOON... THE FLOOD WATCH CONTINUES FOR * PORTIONS OF NORTHWEST WASHINGTON AND WEST CENTRAL WASHINGTON... INCLUDING THE FOLLOWING COUNTIES...IN NORTHWEST WASHINGTON... CLALLAM...GRAYS HARBOR...JEFFERSON...KITSAP...MASON...SKAGIT AND WHATCOM. IN WEST CENTRAL WASHINGTON...KING...LEWIS...PIERCE... SNOHOMISH AND THURSTON.