A deep and slow moving storm system, with a deep fetch of Pacific moisture, delivered widespread moderate to heavy snow to the Inland Northwest tonight into Thursday. The winter storm severely impact transportation for almost one week. During the event, numerous school districts cancelled school due to the hazardous winter driving conditions.

Heavy Snow in MOSES LAKE AREA, WASHINGTON
From 06-JAN-22 00:00:00 to 06-JAN-22 14:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Across the Columbia Basin, in Moses Lake, Quincy, and Ephrata, heavy snow began falling overnight that accumulated to 5 to 10 inches by mid-morning. Quincy School District cancelled school due to the poor weather conditions.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 05-JAN-22 22:00:00 to 07-JAN-22 07:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Moderate to heavy snow fell across northeastern Washington with an overnight, 12 hour accumulation of 4 to 5 inches in Newport, Kettle Falls, and Elk. Light snow continued off and on throughout the day with an additional 2 to 5 inches over the following 24 hours and ending around 0700PST on the 7th. Elk and Newport received a 48 hour total 7 to 10 inches of snow. There were several power outages due to the weather conditions on the 6th.

Winter Weather in WATERVILLE PLATEAU, WASHINGTON
From 07-JAN-22 12:00:00 to 07-JAN-22 18:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Sustained strong winds and fresh snow created drifting snow and near zero visibility across the Waterville Plateau. There were numerous road closures and cars stranded on U.S. Highway 2.

Winter Storm in CENTRAL CHELAN COUNTY, WASHINGTON
From 05-JAN-22 18:00:00 to 06-JAN-22 20:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

There was a major winter storm that led to a state of emergency in the city of Leavenworth. Light snow early January 5th intensified overnight and continued into the early evening hours of the following day. Locations, such as Leavenworth, Coles Corner, and Plain, received 20 to 30 inches of snow in less than 24 hours. A two-day total snow accumulation of 27 inches was measured at Blewett Pass. The heavy snowfall led to numerous roof slides with widespread road closures and power outages. With the fresh snow, strong winds created blowing snow and snow drifts.

Heavy Snow in UPPER COLUMBIA BASIN, WASHINGTON
From 05-JAN-22 22:00:00 to 06-JAN-22 10:00:00 (PST-8)
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A strong winter storm brought moderate to heavy snow across the upper Columbia Basin. Snow began around 2200PST bringing 4 to 6 inches of snow overnight in locations such as Ritzville, Odessa, and Davenport. Due to the heavy snow and slick road conditions, there was a slide off on Interstate 90 near Sprague. No injuries were reported.

Winter Storm in SPOKANE AREA, WASHINGTON
From 05-JAN-22 22:00:00 to 07-JAN-22 08:00:00 (PST-8)
Property damage: 10.00K
Crop damage: 0.00K
Reported by: ASOS

A strong winter storm brought moderate to heavy snow across the Spokane County. From midnight to 1600PST, there were 4 to 8 inches snow accumulation, with 5 inches measured at the Spokane International Airport. With rising daytime temperatures, the snow turned to sleet and freezing rain around 1600PST. There were 0.19 inches of ice measured at the airport from 1600 to 2000PST. Gusty winds, with a peak gust of 46 mph at the airport, led to tents collapsing at the county fair grounds and testing site.

Heavy Snow in OKANOGAN HIGHLANDS, WASHINGTON
From 06-JAN-22 00:00:00 to 07-JAN-22 08:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Moderate to heavy snow fell in Republic, and surrounding areas, with an overnight 12 hour accumulation of 4 to 6 inches. Light snow continued off and on throughout the day with an additional 1 to 2 inches over the following 24 hours and ending around 0700PST on January 7th.

Winter Storm in WESTERN CHELAN COUNTY, WASHINGTON
From 05-JAN-22 16:00:00 to 07-JAN-22 08:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

A major winter storm dumped 30 to 40 inches of snow across Stehekin and Stevens Pass over 48 hours. Large avalanches, with blowing and drifting snow, led to a seven day closure of US Highway 2 at Stevens Pass. There were more than 200 snow slides in Tumwater Canyon, east of the pass. Some slides measured 30 to 35 feet in height.

Heavy Snow in OKANOGAN VALLEY, WASHINGTON
From 05-JAN-22 23:00:00 to 06-JAN-22 16:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Moderate to heavy snow fell in the Okanogan Valley, with an overnight, 12 hour accumulation of 5 to 11 inches in Okanogan, Malott, and Tonasket. Light snow continued off and on throughout the day with an additional 1 to 2 inches in parts of the valley.

Winter Storm in WENATCHEE AREA, WASHINGTON
From 05-JAN-22 18:00:00 to 06-JAN-22 20:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

A strong winter storm brought moderate to heavy snow, with some freezing rain, across the Wenatchee area along the Columbia River. Snow accumulations were significant - 24 hour totals from 15 to 25 inches and 48 hour totals reaching 20 to 30 inches. There were reports of 2 inches of snow per hour for the first 12 hours of the storm. Near Chelan and Ardenvoir, there were numerous large snow slides leading to the closure of State Route 97. Blowing snow, due to strong winds, create poor visibility and difficult driving conditions.

Winter Storm in WASHINGTON PALOUSE, WASHINGTON
From 06-JAN-22 00:00:00 to 07-JAN-22 14:00:00 (PST-8)
Reported by: Law Enforcement

A major winter storm brought heavy, fresh snow, and freezing rain followed by strong winds to the Washington Palouse. There were 24 hour snow accumulations of 5 to 10 inches in Pullman, Colfax, and Oaksdale on January 6th. Blowing and drifting snow closed roads and led to accidents due to poor visibility and strong winds. A semi-truck rolled over on US Highway 195 shortly after the Pullman Airport and ASOS site reported a peak gust of 58 mph on the 7th. There was one minor injury.

High Wind in LOWER GARFIELD & ASOTIN, WASHINGTON
From 07-JAN-22 11:30:00 to 07-JAN-22 12:45:00 (PST-8)
Magnitude: 56.00 MG
Crop damage: 0.00K
Reported by: COOP Observer

Gusty winds peaked at 1200PST with a gust of 64 mph measured in Pomeroy. There were reports of downed trees and roofs damaged due to the strong winds.

Heavy Snow in WESTERN OKANOGAN COUNTY, WASHINGTON
From 05-JAN-22 22:00:00 to 07-JAN-22 08:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Light snow began in the early evening hours on January 5th and heavy snow began to accumulate around midnight. Snowfall rates picked up overnight with an accumulation of 15 to 23 inches across the Methow Valley, including Twisp, Winthrop, and Carlton, by the morning. Snow began to taper off that evening with Twisp receiving a 36 hour snow accumulation of 30 inches ending 0700PST January 7th.