Yancy Flair, 35, was reported missing and possibly buried in the avalanche about 3 p.m., said troopers spokeswoman Megan Peters.
A Chugach Powder Guides helicopter and 14 rescuers on the ground with probes searched for Flair on Saturday afternoon but were unable to find him, she said.
At about 5 p.m., a volcanic ash plume from Mount Redoubt began to hamper the search, Peters said.
The search was postponed on Sunday due to bad weather and ash but may resume today depending on weather conditions, she said.
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