A complex weather pattern across the Eastern Pacific led to region-wide light to moderate snow.  A closed upper-level high was positioned over southeastern Alaska.  The high steered modified Arctic air southward into the Inland Northwest.  Meanwhile, a moist westerly jet undercut the Alaskan high bringing a source of moisture into the region.  A combination of a stalled frontal boundary, topography, and isentropic processes resulted in region-wide snow.  The heaviest snow was delivered in two main waves; the first occurred from the evening hours of the 22nd through the evening of the 23rd with a second surge of moderate to heavy snow during the day on the 24th.  The heaviest snow accumulations were concentrated across the East Slopes of the Washington Cascades and Central Panhandle Mountains of Idaho which received between one to three feet of snow.  Nearly all other valley locations received between four to ten inches over the multi-day period.

Heavy Snow in SPOKANE AREA, WASHINGTON
From 24-FEB-14 10:00:00 to 24-FEB-14 20:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Snowfall amounts across the Spokane Area ranged between four and six inches from heavy snow on the 24th.  The previous day, the same area received between two and four inches resulting in two day totals of six to nine inches.

Heavy Snow in EAST SLOPES NORTHERN CASCADES, WASHINGTON
From 22-FEB-14 17:00:00 to 25-FEB-14 04:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The East Slopes of the Washington Cascades experienced nearly three days of light to moderate snow and occasionally periods of heavy snow from February 22nd through the morning hours of the 25th.  Snowfall totals over the three day period ranged from eight inches across the eastern reaches of Chelan County to forty inches along and near the Cascade Crest.  Mazama, located in the western reaches of the Methow Valley received seventeen inches of snow.

Winter Weather in WASHINGTON PALOUSE, WASHINGTON
From 23-FEB-14 16:00:00 to 24-FEB-14 23:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall amounts on the 23rd were in the two to four inch range.  A second round of snow on the 24th brought an additional two inches leading to two day totals in the four to seven inch range.

Heavy Snow in OKANOGAN VALLEY, WASHINGTON
From 22-FEB-14 19:00:00 to 24-FEB-14 22:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Valley snowfall amounts over the three day period ranged between seven and ten inches. Three to four inches of snow fell between the 22nd and morning of the 24th. An additional three to six inches fell on the 24th.

Heavy Snow in OKANOGAN HIGHLANDS, WASHINGTON
From 22-FEB-14 19:00:00 to 24-FEB-14 22:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall amounts over the three day period ranged between seven and ten inches. Three to four inches of snow fell between the 22nd and morning of the 24th. An additional three to six inches fell on the 24th.

Winter Weather in UPPER COLUMBIA BASIN, WASHINGTON
From 22-FEB-14 23:00:00 to 24-FEB-14 23:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Snowfall amounts from the 22nd to the 23rd were near two inches in northern Lincoln County to half an inch in Adams County.  A second round of snow on the 24th brought an additional two to three inches across southern reaches of the zone to four inches across northern Lincoln County.