A ‘catastrophic’ start to wildfire season in Oregon sparks alarm

State's wildfires have already torched more than 1m acres, and experts say heat, dryness and lightning are to blame

Oregon's wildfire season is off to an explosive start with more than 1m acres (405,000 hectares) charred in less than a month, as experts warn that extreme heat and unusual lightning strikes are creating catastrophic conditions" for fires to ignite and spread.

The state is currently home to the largest wildfire burning in the US. By Friday afternoon, the Durkee fire had burned nearly 290,000 acres (117,000 hectares) and was only 20% contained. The fire had forced evacuations, shut down a major interstate highway and even produced its own weather system.