A multi-day snow event lead to heavy snow accumulations from late January 26th into the early hours on the 28th. The first mid-level wave brought snow to most areas into the early afternoon January 27th. Enhanced lift brought a boundary of heavy snow from the Wenatchee area into the Okanogan Valley and across southern Ferry, Stevens, and Pend Oreille counties. Morning reports showed snow accumulations of 4-8 inches fell across that area. Light snow, with accumulations 1-3 inches, fell across much of the remaining eastern Washington low lands.
The second mid-level wave arrived the evening of January 27th and departed by the early morning hours of the 28th. Not quite a strong as the first, this next round of snowfall accumulated another 3-6 inches across much of the northern Washington counties. Two day snow total ranged from 5 inches in the valleys to 8 to 10 inches in higher elevations of Cascades and northeastern WA mountains.

Heavy Snow in EAST SLOPES NORTHERN CASCADES, WASHINGTON
From 26-JAN-21 21:00:00 to 27-JAN-21 16:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The Mission Ridge Ski Resort reported 8.0 inches of new snow accumulation.

Heavy Snow in WENATCHEE AREA, WASHINGTON
From 26-JAN-21 21:00:00 to 28-JAN-21 07:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

A CoCoRaHS observer, 12 miles northwest of Entiat, recorded 10.3 inches of new snow accumulation.

Heavy Snow in EAST SLOPES NORTHERN CASCADES, WASHINGTON
From 26-JAN-21 21:00:00 to 28-JAN-21 12:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

A CO-OP observer, 8 miles west of Lucerne, recorded 11.9 inches of new snow accumulation.

Heavy Snow in EAST SLOPES NORTHERN CASCADES, WASHINGTON
From 26-JAN-21 21:00:00 to 28-JAN-21 12:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

A CO-OP observer in Stehekin recorded 7.0 inches of new snow accumulation.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 27-JAN-21 04:00:00 to 28-JAN-21 07:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

A CoCoRaHS observer, 10 miles northwest of Kettle Falls, recorded 8.5 inches of new snow accumulation.

Heavy Snow in UPPER COLUMBIA BASIN, WASHINGTON
From 27-JAN-21 04:00:00 to 28-JAN-21 12:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

A CO-OP observer in Wilbur recorded 4 inches of new snow accumulation.

Heavy Snow in SPOKANE AREA, WASHINGTON
From 27-JAN-21 04:00:00 to 28-JAN-21 07:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

A CoCoRaHS observer, 9 miles north of Davenport, recorded 5.0 inches of new snow accumulation.

Heavy Snow in EAST SLOPES NORTHERN CASCADES, WASHINGTON
From 26-JAN-21 21:00:00 to 27-JAN-21 16:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter near Carlton recorded 7.0 inches of new snow accumulation.

Heavy Snow in EAST SLOPES NORTHERN CASCADES, WASHINGTON
From 26-JAN-21 21:00:00 to 28-JAN-21 12:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

A CO-OP observer near Mazama recorded 7.9 inches of new snow accumulation.

Heavy Snow in EAST SLOPES NORTHERN CASCADES, WASHINGTON
From 26-JAN-21 21:00:00 to 28-JAN-21 07:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

A CoCoRaHS observer near Twisp recorded 9.5 inches of new snow accumulation.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 27-JAN-21 21:00:00 to 28-JAN-21 12:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

A CO-OP observer, 9 miles north of Metaline Falls, recorded 5.0 inches of new snow accumulation.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 27-JAN-21 04:00:00 to 28-JAN-21 12:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter in Springdale recorded 7.5 inches of new snow accumulation.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 27-JAN-21 04:00:00 to 28-JAN-21 06:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

A CoCoRaHS observer near Clayton recorded 5.7 inches of new snow accumulation.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 27-JAN-21 04:00:00 to 28-JAN-21 07:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

A CoCoRaHS observer near Evans recorded 7.0 inches of new snow accumulation.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 27-JAN-21 21:00:00 to 28-JAN-21 12:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A member of the public, near Northport, reported 4.0 inches of new snow accumulation.

Heavy Snow in WENATCHEE AREA, WASHINGTON
From 26-JAN-21 21:00:00 to 28-JAN-21 07:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Two mid-level waves brought an impressive two day snow accumulation. Enhanced lift brought a boundary of heavy snow on January 27th. Light snow fell on the following day, but there was a two-day total snow of 9 to 11 inches in the Wenatchee area along the Columbia River.

Heavy Snow in EAST SLOPES NORTHERN CASCADES, WASHINGTON
From 26-JAN-21 21:00:00 to 28-JAN-21 12:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Two mid-level waves brought an impressive two-day snow accumulation. Enhanced lift brought a boundary of heavy snow on January 27th. Light snow fell on the following day, but there was a two-day total of 7 to 12 inches across the Methow Valley.

Heavy Snow in OKANOGAN VALLEY, WASHINGTON
From 26-JAN-21 21:00:00 to 27-JAN-21 16:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A boundary of heavy snow moved through eastern Washington late January 26th into the 27th. It brought a 24 hour total snow accumulation of 4 to 6 inches of snow in the southern Okanogan Valley.