Wildfires that began Saturday near Spokane, Washington, have burned for three days as of August 3, destroying at least 700 buildings and scorching more than 8,000 acres. Evacuation orders rose from 4,000 to 64,000 residents, with no injuries or fatalities reported and the cause still under investigation. Smoke has affected air quality in Puget Sound and the Front Range, while Spokane Mayor Lisa Brown described the event as the region's worst natural disaster.