On September 28th and 29th a cold and deep upper level low descended into the region from Canada. A persistent band of wrap around precipitation began during the day of September 28th and continued into the morning of September 29th impacting mostly the Northeast Mountains and Okanogan highlands zones. During the late afternoon and overnight hours of September 28th precipitation from this system fell as early season accumulating snow in the valleys of northeastern Washington. Heavy wet snow caused broken tree limbs on trees which had not shed their leaves. Gusty northeast winds aggravated the situation by breaking tree branches and in some cases toppling heavy snow laden trees around the region.  Numerous power outages occurred.
The mountains and higher elevation valleys of northeast Washington received their first heavy snow accumulations of the year from this system. The highest amount reported occurred above 6000 feet in the north Cascades with a spotter on Cooper Mountain measuring 26.5 inches of snow from this storm, however the valleys of the East Slopes of the Cascades received only minor accumulations.
The hills and benches around the Spokane area received light to moderate snow accumulations which also contributed to scattered power outages from broken tree branches into power lines with over 1500 customers affected.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 28-SEP-19 09:00:00 to 28-SEP-19 14:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

The road leading up to Mount Spokane was closed due to fallen trees from heavy wet snow and gusty winds. At the lower elevations an estimated 3 inches of snow was reported as of 3:00 pm September 28th.

Winter Weather in SPOKANE AREA, WASHINGTON
From 28-SEP-19 13:00:00 to 28-SEP-19 22:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

One to 2 inches of heavy wet snow and gusty winds caused tree damage and branches into power lines with an estimated 150 customers loosing power on Spokane's South Hill neighborhood.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 28-SEP-19 09:00:00 to 28-SEP-19 22:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Wet heavy snow and gusty winds damaged trees and power lines over much of Stevens County with an estimated 650 customers without power between Northport and Hunters.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 28-SEP-19 09:00:00 to 29-SEP-19 08:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A member of the public reported 4.5 inches of storm total snow accumulation at Elk.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 28-SEP-19 09:00:00 to 29-SEP-19 08:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Staff at the Mount Spokane State Park reported 14.0 inches of storm total snow accumulation.

Winter Weather in SPOKANE AREA, WASHINGTON
From 28-SEP-19 13:00:00 to 29-SEP-19 03:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

The observer at Davenport recorded 1.7 inches of new snow accumulation from this storm.

Winter Weather in SPOKANE AREA, WASHINGTON
From 28-SEP-19 13:00:00 to 29-SEP-19 03:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

An observer 6 miles south of Spokane recorded 2.0 inches of new snow accumulation.

Heavy Snow in OKANOGAN HIGHLANDS, WASHINGTON
From 28-SEP-19 06:00:00 to 29-SEP-19 05:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter at Boyds reported 19.0 inches of storm total snow fall from this storm.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 28-SEP-19 09:00:00 to 29-SEP-19 08:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A member of the public reported 5.0 inches of storm total snow accumulation near Rice.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 28-SEP-19 09:00:00 to 29-SEP-19 08:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A member of the public reported 8.5 inches of storm total snow accumulation 6 miles northeast of Colville.

Heavy Snow in OKANOGAN HIGHLANDS, WASHINGTON
From 28-SEP-19 06:00:00 to 28-SEP-19 15:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Highway crews reported an estimated 6.0 inches of snow at Sherman Pass with several trees toppled from heavy wet snow and gusty winds.

Winter Weather in SPOKANE AREA, WASHINGTON
From 28-SEP-19 13:00:00 to 29-SEP-19 03:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The observer at the Spokane international Airport recorded 3.3 inches of storm total snow accumulation from this storm.