Oregon ? Rescue workers searching for three lost climbers on Oregon’s highest peak confronted stormy weather again Thursday and planned to search lower elevations in hopes that some climbers had managed to descend that far.

An attempt on Mount Hood to use small, unmanned planes carrying devices that can detect body heat was stymied when lenses fogged up.

One climber is believed to be holed up in a snow cave near the top, and the other two are thought to have tried to descend for help.

Forecasters said rescuers’ next shot would probably be Saturday.

Also Thursday, authorities said a cell phone belonging to the climber believed to be in the snow cave was on briefly as recently as Tuesday. But for more than two days the phone has not responded to engineers’ signals, sent every five minutes.