PORTLAND — An Eastern Oregon teenager who spent two nights in a snow cave under a few small trees in the Wallowa Mountains is in good spirits, but his toes are tinged with purple, his snowmobiling partner said Tuesday.

Brennan Anderson, 18, and Sam Bowman, 50, got out of the woods Monday after getting trapped by one of a series of storms across Oregon. Another round of snow was expected Tuesday night.

After blinding snow grounded a rescue helicopter that had flown in a nurse and a paramedic, a tracked snow machine bore Brennan to safety. He was taken to a hospital for treatment of hypothermia and frostbite.

The two were in the Eastern Oregon mountains on Saturday and got separated in heavy snow.

Bowman said he looked for Anderson for four hours and then made it back to a cabin where they’d had lunch.

“The cabin wasn’t too cold, not much below freezing,” he said. “Then the cold snap hit ... I kept looking out the door for him.”

Meanwhile, searchers from two counties were out, but were defeated by wind and snowfall of up to 4 feet.

But on Monday, searchers in the air spotted Bowman, rescued him and then retraced his steps to where the two were separated. A half hour later, they came across Brennan’s snow cave, and he popped out waving a bright orange shovel.

Authorities said the two were well clothed and equipped, with survival gear, matches and an avalanche beacon.

In Eastern Oregon Tuesday, highway officials said that the eastbound lane of Interstate 84 was closed between Pendleton and La Grande as a result of a weather-related truck accident — the fourth day in a row that traffic on the highway had been impeded by storm closures.

Forecasts Tuesday night and today said the heaviest snow would be in the central part of the Cascade Range and in the Wallowas, with total accumulations of nearly 2 feet of new snow.