A trio of skiers is likely buried under an avalanche near Anchorage, Alaska, that occurred Tuesday afternoon, but dangerous backcountry conditions have so far stymied recovery operations, officials announced.

Alaska State Troopers say three skiers who had flown by helicopter to a remote mountain range were swept away by an avalanche and likely killed under the weight of dozens of feet of snow

If the deaths are confirmed, it would be the deadliest U.S. avalanche since three climbers were killed in a slide in Washington’s Cascade Range two years ago. While Alaska State Troopers had ...