Wildfires in US West Explode in Size, Driven by Heat, Wind

SAN DIEGO —  Wildfires in California and Montana exploded in size overnight amid windy, hot conditions and were quickly encroaching on neighborhoods, forcing evacuation orders for more than 100 homes Saturday, while an Idaho blaze was spreading. In California’s Klamath National Forest, the fast-moving McKinney fire, which started Friday, went from charring just more than…