(CNN) — Wildfires spanning almost 170,000 acres are driving hundreds of people from their homes in Washington state and across the border in Canada, officials said.
Washington authorities say the fires surged to 168,713 acres in the state. The flames have encroached on towns.
Janet Pearce of the Washington state Department of Natural Resources said the four fires had not been contained as of Friday morning. An estimated 100 homes were destroyed and cell phone service was knocked out.
There were no reports of injuries or missing persons.
Pateros on the Columbia River was hit particularly hard, when flames came over a hill and spilled into the town’s valley Thursday, Okanogan County Sheriff Frank Rogers said.
The entire town of roughly 650 people was evacuated, he said, and most of the homes caught fire.
“We were sitting down below the hill and the wind shifted, and within half of an hour the backside of the town was burning,” Rogers said.
The winds are fanning flames in many parts of the county, which borders British Columbia, Canada, he said.
Oregon has at least 15 active wildfires, including the Buzzard Complex fire about 150 miles west of Boise, Idaho. That set of fires also started Monday and has grown to more than 425 square miles, according to InciWeb.