A persistent area of low pressure along the boundary of a stalled Arctic front set the stage for another round of heavy snow accumulations over north Idaho and northeast Washington during the third week of January. Moist air feeding into the area of low pressure impacted primarily the Northeast Mountains zone where the low level wind flow was favorable for upslope enhancement.  Areas on the periphery of the mountains including the Upper Columbia Basin and the Spokane Area zones received generally 1 to 3 inches of snow from this round of precipitation in this active pattern.
Heavy orographic snow also impacted the Blue Mountains of southeast Washington during this period. The western Columbia basin and the East Slopes of the Cascades zone benefited from a precipitation shadow with largely dry conditions or minor accumulations from scattered snow showers.

Heavy Snow in NORTHEAST BLUE MOUNTAINS, WASHINGTON
From 12-JAN-20 09:00:00 to 13-JAN-20 10:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

An observer 6 miles east of Anatone reported 10.0 inches of snow accumulation from this storm.

Heavy Snow in NORTHEAST BLUE MOUNTAINS, WASHINGTON
From 12-JAN-20 09:00:00 to 13-JAN-20 10:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The Bluewood Ski Resort reported 31 inches of snow accumulation from this storm.

Heavy Snow in NORTHEAST BLUE MOUNTAINS, WASHINGTON
From 12-JAN-20 09:00:00 to 13-JAN-20 10:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A member of the public in Anatone reported 24.0 inches of snow accumulation from this storm.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 12-JAN-20 05:00:00 to 13-JAN-20 04:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The COOP observer at Boundary Dam recorded 14.0 inches of new snow accumulation from this storm.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 12-JAN-20 05:00:00 to 13-JAN-20 04:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The COOP observer at Chewelah recorded 5.5 inches of new snow accumulation from this storm.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 12-JAN-20 05:00:00 to 13-JAN-20 04:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The COOP observer at Colville recorded 11.0 inches of new snow accumulation from this storm.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 12-JAN-20 05:00:00 to 13-JAN-20 04:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The COOP observer at Newport recorded 12.0 inches of new snow accumulation from this storm.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 12-JAN-20 05:00:00 to 13-JAN-20 04:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The COOP observer at Northport recorded 6.7 inches of new snow accumulation from this storm.

Heavy Snow in NORTHEAST BLUE MOUNTAINS, WASHINGTON
From 12-JAN-20 09:00:00 to 13-JAN-20 10:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The COOP observer 14 miles south of Asotin recorded 5.0 inches accumulation from this storm.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 12-JAN-20 05:00:00 to 13-JAN-20 04:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter at Metaline Falls reported 10.5 inches of new snow accumulation from this storm.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 12-JAN-20 05:00:00 to 13-JAN-20 04:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter 8 miles southeast of Northport reported 11.5 inches of new snow accumulation from this storm.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 12-JAN-20 05:00:00 to 13-JAN-20 04:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter 3 miles north of Loon Lake reported 6.5 inches of new snow accumulation from this storm.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 12-JAN-20 05:00:00 to 13-JAN-20 04:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The 49 North Ski Resort reported 24 inches of new snow accumulation from this storm.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 12-JAN-20 05:00:00 to 13-JAN-20 04:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The Mount Spokane Ski Resort reported 25 inches of new snow accumulation from this storm.

Heavy Snow in NORTHEAST MOUNTAINS, WASHINGTON
From 12-JAN-20 05:00:00 to 13-JAN-20 04:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

An observer near Diamond Lake recorded 7.0 inches of new snow accumulation from this storm.