Heavy Snow in Upper Koyukuk Valley, Alaska

Heavy snow developed along a slow moving warm front as it moved across the Lower, Middle, and Upper Koyukuk Valleys to the Southern Slopes of the Eastern Brooks Range. The heaviest snow fell near Bettles (Zone 219) where 11 inches of new snow was measured by the ASOS Augmenting Observer. The CO-OP Observer at Galena (Zone 216) measured 8 inches and reported via phone that near white out conditions occurred for short periods as the heaviest snow fell. Farther north the Department of Transportation at Chandalar Lake (Zone 218) reported 6 inches had fallen over a 24 hour period.