Across the West, megafires are no longer uncommon, and unprecedented fire behavior is no longer unexpected. Welcome to the California of climate change, where the new normal is extreme weather and terrifying consequences. Already, the 2021 fire season has confounded expectations. Before this year, no fire was known to have burned from one side of the Sierra Nevada to the other. Now it’s happened twice — with the Dixie fire in the northern Sierra and now the Caldor fire near Lake Tahoe.