As you read this, the Dixie Fire in Northern California rages on, having scorched more than half a million acres of land and becoming the second-largest blaze in California history—its noxious smoke unfurling as far east as Denver, more than 1,000 miles away. For Idaho wine growers, like Mike Williamson of Williamson Orchards and Vineyards, the heat and smoke of the past few summers are a growing concern. “I kind of obsess a little bit over the 10-day forecast,” he says. “So, if something’s on the horizon, we start taking action to get ready for it now.”