A Line of Fire South of Portland and a Yearslong Recovery Ahead

A 36-mile-wide line of flames edged into the towns around Portland, Ore., and cities along the West Coast were smothered in acrid smoke and ash on Friday as history-making wildfires remained unchecked, killing at least 17 and leaving dozens of people missing.

“We are preparing for a mass fatality incident based on what we know and the numbers of structures that have been lost,” Andrew Phelps, director of the Oregon Office of Emergency Management, said as firefighters struggled to contain blazes that have spread across millions of acres of the...