Heavy Snow in Lower Koyukuk Middle Ykn Vlys, Alaska

An inverted surface trough extended north into the Lower Koyukuk and Middle Yukon Valley from a 978 mb low along the Alaska Peninsula at 0300AKST on the morning of the 10th. The low moved north and weakened to 994 mb in the western interior by 0300AKST on the 11th. Heavy snowfall was observed in parts of the lower and middle Yukon Valleys.

Zone 215: Approximately 12 inches of snow was observed at the Anvik Post Office. The snow began during the evening hours on the 9th and continued until the evening hours on the 10th.

Zone 216: Heavy snowfall was observed near Ruby. The cooperative observer 14 miles northeast of Ruby observed a total of 12.8 inches of snow from approximately 2000AKST on the 9th through 0800AKST on the 11th.