Two planes scoured the area Monday and three could go out Tuesday if the group isn't found, Maj. Thomas Cooper said. Several inches of snow was on the ground in the area, but the black top on the silver 2005 Jeep should help make it easier to spot from the air, authorities said.

While the cold made for dangerous conditions, the clear weather was working in the pilots' favor. The forecast called for mostly sunny again on Tuesday with clouds moving in Tuesday night.
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"It's remote, and it's rocky," Nevada Department of Wildlife spokesman Chris Healy said. "There are good dirt roads into the place, but they are dirt roads, and it is cold and snow so it's not ideal."