A complex early winter storm moved through the region on October 23rd as a deep low tracked southeast over the region. This kept most of the Inland Northwest on the cold side of the storm bringing low snow levels and temperatures at or below freezing. There was heavy wet snow, many with snow up to 6-8, across much northern Washington and into the West Plains, including the Spokane area.
There were numerous collisions and spin outs due to the snow and poor visibility.  Washington State Patrol reported that there was 129 crashes. Trees down and collisions closed many roadways and highways for hours. Power outages were common due to trees on power lines.
This was a record breaking event in Spokane. With 6.8 inches on the 23rd, this was the greatest single day snowfall in October.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 23-OCT-20 06:00:00 to 23-OCT-20 21:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

There were numerous reports on social media of 7.0 inches of new snow accumulation in Kettle Falls from this storm.

Heavy Snow in SPOKANE AREA, WASHINGTON
From 23-OCT-20 10:00:00 to 23-OCT-20 21:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A member of the public in Five Mile Falls reported 7.5 inches of new snow accumulation from this storm.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 23-OCT-20 06:00:00 to 23-OCT-20 21:30:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A member of the public 5 miles east of Colville reported 7.3 inches of new snow accumulation from this storm.

Heavy Snow in SPOKANE AREA, WASHINGTON
From 23-OCT-20 10:00:00 to 23-OCT-20 16:20:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

A National Weather Service employee in Spokane recorded 4.7 inches of new snow accumulation from this storm.

Heavy Snow in SPOKANE AREA, WASHINGTON
From 23-OCT-20 10:00:00 to 23-OCT-20 21:45:00 (PST-8)
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter in northwest Spokane reported 5.8 inches of new snow accumulation from this storm. A large tree branch fell in their yard due to heavy wet snow.

Heavy Snow in SPOKANE AREA, WASHINGTON
From 23-OCT-20 14:50:00 to 23-OCT-20 15:00:00 (PST-8)
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Social Media

There was a report on social media of a large tree down in south Spokane due to heavy snow.

Heavy Snow in SPOKANE AREA, WASHINGTON
From 23-OCT-20 14:50:00 to 23-OCT-20 15:00:00 (PST-8)
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Social Media

There was a report on social media of a large tree down in southeast Spokane due to heavy snow.

Heavy Snow in SPOKANE AREA, WASHINGTON
From 23-OCT-20 16:50:00 to 23-OCT-20 17:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

There was a report on broadcast media of tree brought down in central Spokane by heavy snow.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 23-OCT-20 06:00:00 to 23-OCT-20 18:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A member of the public in Chewelah reported 7.0 inches of new snow accumulation from this storm.

Heavy Snow in OKANOGAN HIGHLANDS, WASHINGTON
From 23-OCT-20 06:00:00 to 23-OCT-20 21:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A member of the public 5 miles south of Republic reported 9.5 inches of new snow accumulation from this storm.

Heavy Snow in OKANOGAN HIGHLANDS, WASHINGTON
From 23-OCT-20 06:00:00 to 23-OCT-20 16:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A member of the public 1 mile north of Republic reported 9.5 inches of new snow accumulation from this storm.

Heavy Snow in OKANOGAN HIGHLANDS, WASHINGTON
From 23-OCT-20 06:00:00 to 23-OCT-20 20:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A member of the public 7 miles south of Wauconda reported 8.0 inches of new snow accumulation from this storm.

Heavy Snow in OKANOGAN HIGHLANDS, WASHINGTON
From 23-OCT-20 06:00:00 to 23-OCT-20 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A member of the public 1 mile northeast of Malo reported 9.0 inches of new storm accumulation from this storm.

Heavy Snow in OKANOGAN HIGHLANDS, WASHINGTON
From 23-OCT-20 06:00:00 to 23-OCT-20 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A member of the public 4 miles southwest of Malo reported 8.5 inches of new storm accumulation from this storm.

Heavy Snow in SPOKANE AREA, WASHINGTON
From 23-OCT-20 00:00:00 to 23-OCT-20 23:59:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

The National Weather Service in Spokane measured 8.4 inches of new snow accumulation from this storm.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 23-OCT-20 06:00:00 to 23-OCT-20 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A member of the public 3 miles west of Orin reported 8.0 inches of new snow accumulation from this storm.

Heavy Snow in EAST SLOPES NORTHERN CASCADES, WASHINGTON
From 23-OCT-20 06:00:00 to 23-OCT-20 18:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A member of the public in Conconcully reported 8.0 inches of new snow accumulation from this storm.

Heavy Snow in OKANOGAN HIGHLANDS, WASHINGTON
From 23-OCT-20 06:00:00 to 23-OCT-20 17:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A member of the public 2 miles west of Wauconda reported 8.0 inches of new snow accumulation from this storm.

Heavy Snow in SPOKANE AREA, WASHINGTON
From 23-OCT-20 10:00:00 to 23-OCT-20 17:00:00 (PST-8)
Crop damage: 0.00K
Reported by: Department of Highways

There were numerous collisions on Interstate 90 and US Highway 2 in Spokane due to heavy snow, rapidly deteriorating conditions, and poor visibility.

Heavy Snow in SPOKANE AREA, WASHINGTON
From 23-OCT-20 10:00:00 to 23-OCT-20 18:30:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A member of the public in Rockford reported 6.0 inches new snow accumulation from this storm.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 23-OCT-20 06:00:00 to 23-OCT-20 17:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A member of the public in 3 miles southwest of Arden reported 6.5 inches of new snow accumulation from this storm.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 23-OCT-20 06:00:00 to 23-OCT-20 17:45:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A member of the public in Deer Park reported 7.0 inches of new snow accumulation from this storm.

Heavy Snow in OKANOGAN HIGHLANDS, WASHINGTON
From 23-OCT-20 06:00:00 to 23-OCT-20 23:59:00 (PST-8)
Reported by: Department of Highways

The highway department sensor at Sherman Pass reported 12.0 inches of new snow accumulation from this storm. There were reports by the Department of Highways of multiple collisions while ascending Sherman Pass.

Heavy Snow in SPOKANE AREA, WASHINGTON
From 23-OCT-20 10:00:00 to 23-OCT-20 18:45:00 (PST-8)
Reported by: Department of Highways

The Department of Highways reported northbound State Route 25, north of Davenport, closed due to several collisions from heavy snow.

Heavy Snow in SPOKANE AREA, WASHINGTON
From 23-OCT-20 20:15:00 to 23-OCT-20 21:45:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

The Department of Highways reported State Route 27, south of Freeman, closed due to a collision from heavy snow.

Heavy Snow in SPOKANE AREA, WASHINGTON
From 23-OCT-20 11:00:00 to 23-OCT-20 23:59:00 (PST-8)
Property damage: 200.00K
Crop damage: 0.00K
Reported by: Local Official

The City of Spokane had over 200 reports of downed trees and branches blocking roadways and/or entangled in power lines. Many broke overnight due to heavy snow sitting on tree limbs the previous day.