An arctic frontal boundary pushed through Western Washington, bringing wintry precipitation in the form of snow and colder weather.

Winter Weather in SAN JUAN, WASHINGTON
From 19-DEC-22 22:00:00 to 20-DEC-22 13:00:00 (PST-8)
Reported by: CoCoRaHS

Multiple CoCoRaHS observers in the San Juans reported 11 inches of snowfall on Lopez Island, with a report of 11 inches also on Orcas Island. A report on Friday Harbor ranging from 9 to 11 inches. Wintry weather mainly ended later on the morning of the 20th.

Winter Weather in WESTERN WHATCOM COUNTY, WASHINGTON
From 19-DEC-22 15:00:00 to 20-DEC-22 11:00:00 (PST-8)
Reported by: CoCoRaHS

Multiple CoCoRaHS reports around Bellingham have reports of 9 to 11 inches of snowfall ending late morning of the 20th.

Winter Weather in WESTERN SKAGIT COUNTY, WASHINGTON
From 19-DEC-22 18:00:00 to 20-DEC-22 11:00:00 (PST-8)
Reported by: Social Media

A facebook report lists 8 to 9 inches of snow in Sedro-Wooley.

Winter Weather in EVERETT AND VICINITY, WASHINGTON
From 19-DEC-22 16:00:00 to 20-DEC-22 11:00:00 (PST-8)
Reported by: CoCoRaHS

CoCORaHS reports 3 inches of snow 2 miles north of Everett and 6 inches 6 miles south of Everett, with 4.7 of snow 2 miles NW of Arlington.

Winter Weather in WESTERN WHATCOM COUNTY, WASHINGTON
From 19-DEC-22 15:00:00 to 20-DEC-22 11:00:00 (PST-8)
Reported by: Social Media

A twitter report has near 12 inches of snowfall South of Lake Whatcom. Another twitter report has 15 inches of snow in Semiahmoo. A spotter report (Snohomish 95) reported 10.75 inches of snow in Lynden, while Whatcom 139 spotter reported 12 inches in Bellingham. Further east near Glacier, a social media plus a spotter report confirmed 14 inches of snow.

Winter Weather in WESTERN SKAGIT COUNTY, WASHINGTON
From 19-DEC-22 18:00:00 to 20-DEC-22 11:00:00 (PST-8)
Reported by: CoCoRaHS

CoCoRaHS reports 10.5 inches of snow 3 mils North of Anacortes. Another report from CoCORaHS lists 6.3 inches of snow 3.4 miles W of Mount Vernon, and 6.7 inches of snow 8 miles north of Burlington. Another report indicates 9.5 inches of snow 5.4 miles W of Bow.

Winter Weather in EVERETT AND VICINITY, WASHINGTON
From 19-DEC-22 16:00:00 to 20-DEC-22 11:00:00 (PST-8)
Reported by: Social Media

A user on twitter reported 5 inches of snow in Stanwood and Lynnwood. A user also reported 4 inches in Martha Lake and 3 inches in Marysville. Another report details 4.75 inches in Monroe.

Winter Weather in EASTERN STRAIT OF JUAN DE FUCA, WASHINGTON
From 19-DEC-22 18:00:00 to 20-DEC-22 11:00:00 (PST-8)
Reported by: CoCoRaHS

CoCoRaHS reports 10 to 11 inches in Port Angeles. Further east around Seqium, 4 to 6 inches were reported.

Winter Weather in EASTERN STRAIT OF JUAN DE FUCA, WASHINGTON
From 19-DEC-22 18:00:00 to 20-DEC-22 11:00:00 (PST-8)
Reported by: Social Media

Facebook report in Clallam Bay of around 9 inches. Another facebook report in Joyce reported about 12 inches. A spotter (Clallam 2) east of Neah Bay reported 12.5 inches of snow, while a twitter report in the Port Angeles foothills reported 9 inches.

Winter Weather in BREMERTON AND VICINITY, WASHINGTON
From 19-DEC-22 18:00:00 to 20-DEC-22 11:00:00 (PST-8)
Reported by: Social Media

A facebook report in Hansville reported 3 inches while another report in Poulsbo reported 4 inches on the morning of the 20th.

Winter Weather in SEATTLE AND VICINITY, WASHINGTON
From 19-DEC-22 17:00:00 to 20-DEC-22 11:00:00 (PST-8)
Reported by: Social Media

Twitter reports 3-4 inches of snow in Bothell, 3 inches in Kenmore, 1 inch in Bellevue, 1.5 inches in Wallingford, 1 inch in West Seattle, 1.75 inches in Golden Gardens, 1.5 inches in Woodinville, and 2.25 inches in Bitter Lake.

Winter Weather in SEATTLE AND VICINITY, WASHINGTON
From 19-DEC-22 17:00:00 to 20-DEC-22 11:00:00 (PST-8)
Reported by: CoCoRaHS

Reports from CoCoRaHS report 2 inches of snow 2.1 miles ESE of Seattle. 0.8 inches was also reported on Mercer Island, with 2.4 inches in Redmond.
Going further east, CoCoRaHS in North Bend reported 4 inches of snow and 5.4 miles ESE of North bed, 7 inches was reported.

Winter Weather in BREMERTON AND VICINITY, WASHINGTON
From 19-DEC-22 18:00:00 to 20-DEC-22 11:00:00 (PST-8)
Reported by: CoCoRaHS

CoCoRaHS reports 4.8 inches of snowfall in Indianola, with 3.9 inches just south of Indianola. About 2.5 inches of snow was reported 2.8 miles east of Bremerton. A report of 5.9 inches was received 0.9 miles South of Seabeck - while another spotter report of 7.5 inches was reported in Seabeck. At 11am, spotter (kitsap 58) reported 9.6 inches of snow has fallen since midnight.