A dusting of snow could blanket higher elevations in the Twin Harbors through Saturday.
The National Weather Service forecast calls for a progressively cooler air mass to gradually spread into Western Washington, causing snow levels to fall to near sea level.
A mix of rain and snow showers could occur from Olympia south through Lewis County and also along the Pacific Coast, but air temperatures above 35 degrees should prevent more than brief localized slushy accumulations, the Weather Service said.
Although areas in Grays Harbor within 5 miles of the coast aren’t likely to see any snow, heavier amounts will occur at elevations above 300 feet, said an advisory from Charles Wallace, county deputy director of Grays Harbor Emergency Management.
The heaviest snowfall Thursday morning was reported in the Willapa Hills and higher elevations in Pacific County, where the Weather Service issued a winter weather advisory through 10 a.m. Accumulations were between 2 and 4 inches.
The Weather Service forecasts a mostly sunny day on Friday, with a high of about 40 degrees. A 30 percent chance of snow could occur again on Saturday morning starting after 4 a.m. when temperatures are expected to drop to about 29 degrees in and around Hoquiam. New snow accumulation of less than a half inch is possible, the Weather Service said.
For Saturday night, there is a 50 percent chance of snow showers, with the forecast for mostly cloudy conditions and a low of about 34 degrees.