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Timeline: Up to 5 inches of additional snow possible at Stevens Pass Tuesday

Following heavy rain and wind in the western Washington lowlands, snow levels are dropping to 2,000 feet or lower.

SKYKOMISH, Wash. — Temperatures dropped in western Washington overnight Monday, signaling the departure of the atmospheric river that brought heavy rains and flooding throughout the region.

Lowland temperatures that have been in the 50s will be much cooler for the rest of the week.

Snow levels, which have hovered between 8,000-10,000 feet recently, dropped to 2,000 feet.

Below is a timeline of what to expect:

Tuesday

Lowlands 

Temperatures in the mid- to upper-40s, cooling overnight.

Mountain snow

A secondary convergence zone brought snow to the Cascades Tuesday morning.

A Winter Weather Advisory expired at 10 a.m.

The passes received less snow than forecasted. New snowfall ranged from a trace at Snoqualmie Pass to about 6 inches at Stevens Pass.

Stevens Pass could get up to 5 more inches of snow by the end of the day.

Wednesday 

Drier weather is expected to continue Wednesday across western Washington.

Cooler weather will remain through at least the end of Wednesday, with lowland lows in the 30s and highs in the mid to upper 40s for much of the area.

The NWS said some lowland areas could see freezing temperatures Wednesday morning, “especially over the East Puget Sound lowlands, the Southwest Interior, and Lower Chehalis Valley.”

Thursday into the weekend

Another system is expected to approach the area Thursday, bringing another round of lowland rain and mountain snow. The NWS said the Puget Sound lowlands could see another half an inch of rain.

Light to moderate rain is expected to last until the end of the workweek. The weekend is looking dry with a good amount of sunshine.

High temperatures over the next seven days will mainly stay in the mid and upper 40s.