SNOQUALMIE PASS — The King County Sheriff’s Office says a backcountry skier has been injured in an avalanche near Snoqualmie Pass.

Initial reports suggested the skier may have suffered two broken legs.

Search-and-rescue crews arrived at the skier’s location Sunday afternoon. Authorities told KOMO-TV that the rescue effort could take all night.

Weather conditions have made a helicopter rescue impossible, the sheriff’s office said.

The avalanche was reported near Alpental, which includes expert backcountry terrain and is part of The Summit at Snoqualmie, a ski area east of Seattle.