An avalanche on Alaska’s Kenai Peninsula killed one backcountry skier and injured two others, prompting warnings for people to stay away from steep slopes as warm weather and high winds raise the risk of more snowslides around the state. The avalanche occurred Tuesday afternoon between the communities of Cooper Landing and Moose Pass in the Chugach National Forest, about 90 miles (145 kilometers) south of Anchorage. It occurred as the three men hiked up a mountain about a mile (1.6 kilometers) east off the Seward Highway, the main thoroughfare between Anchorage and Seward, so they could ski back down, Alaska State Troopers wrote in an online report Wednesday.