NASA image of Washington State wildfires
The passage of thunderstorms across the east slopes of the Cascade Range ignited numerous wildfires. Forest fires on the east slope of the Cascades are a common event. In rural residential areas within the dry forests home loss is also not uncommon. I am fairly cognizant of fire hazard areas, but have to admit a bit of surprise at the damage that directly hit Pateros, a town on the Columbia River outside the forest zone and with orchards on the hillsides above.
I marked up a couple of burned areas on Google earth via images from the Wenatchee World.