Southwest flow aloft increased over the region as a Pacific low and a frontal boundary approached the Washington coast. Southerly winds increased, especially across
the Columbia Basin and Palouse on Sunday afternoon with gustiness continuing Sunday night. Snow spread into northeastern Washington on Sunday night with significant snowfall and increasing winds impacting the region on Monday.

Heavy Snow in WENATCHEE AREA, WASHINGTON
From 02-JAN-22 21:00:00 to 03-JAN-22 12:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Snow began to accumulate at 2100PST and taper off around 1200PST the following day. A total of 6 to 8 inches of snow fell overnight across the Wenatchee area including Cashmere, Wenatchee, and Entiat.

Heavy Snow in OKANOGAN VALLEY, WASHINGTON
From 02-JAN-22 20:00:00 to 03-JAN-22 11:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Light snow began in the early evening hours and began to accumulate around 2000PST. Snowfall rates picked up overnight and tapered off around 1100PST the following day. Heavy snow fell overnight with an accumulation of 5 to 9 inches across the Okanogan Valley.

Winter Storm in WASHINGTON PALOUSE, WASHINGTON
From 03-JAN-22 00:00:00 to 03-JAN-22 15:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Numerous state routes across the Washington Palouse were closed due to blowing and drifting snow. Fresh snow and strong winds led to white conditions throughout the morning.

Heavy Snow in CENTRAL CHELAN COUNTY, WASHINGTON
From 02-JAN-22 21:00:00 to 03-JAN-22 12:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Snow began to accumulate at 2100PST and taper off around 1200PST the following day. A total of 6 to 10 inches of snow fell overnight across the eastern Cascade slopes, from Leavenworth to Plain.

Heavy Snow in WESTERN OKANOGAN COUNTY, WASHINGTON
From 02-JAN-22 16:00:00 to 03-JAN-22 10:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Light snow began in the late afternoon hours and began to accumulate around 1700PST. Snowfall rates picked up overnight and tapered off around 1000PST the following day. Heavy snow fell overnight with an accumulation of 6 to 12 inches down the Methow Valley.

Winter Storm in WESTERN CHELAN COUNTY, WASHINGTON
From 02-JAN-22 16:00:00 to 03-JAN-22 15:00:00 (PST-8)
Crop damage: 0.00K
Reported by: Department of Highways

US Highway 2 was closed at Stevens Pass for avalanche control at 0500PST. There was additional closure due to spin outs, blowing and drifting snow, and strong winds. Stevens Pass recorded 12 inches of snow accumulation in the morning of January 3rd.

Heavy Snow in OKANOGAN HIGHLANDS, WASHINGTON
From 02-JAN-22 19:00:00 to 03-JAN-22 16:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Light snow began in the early evening hours and began to accumulate around 1900PST. Snowfall rates picked up overnight and tapered off around 1600PST the following day. Heavy snow fell overnight with an accumulation of 7 to 11 inches across the Okanogan Highlands, including 6.5 inches at Sherman Pass.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 02-JAN-22 17:00:00 to 03-JAN-22 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Light snow began in the early evening hours and continued off and on over the next 24 hours. Snowfall rates picked up overnight with an accumulation of 6 to 12 inches across the northeast mountains. 49 North Ski Resort recorded 10 inches at the base in the morning of January 3rd.