SPOKANE, Wash. -- A large, wind-whipped wildfire in rural north-central Washington destroyed an estimated 100 homes, forced the evacuation of a small town and cut power to most of the scenic Methow Valley.

Fire spokesman Jacob McCann, said Friday that the Carlton Complex fire "ran quite a bit" Thursday and officials were also able to get a better handle on its size. It scorched 260 square miles by Friday morning, up dramatically from the previous estimate of 28 square miles.

"Mother Nature is winning here," Don Waller, chief of Okanogan County Fire District 6, told The Wenatchee World.

Officials say no injuries have been reported.

Authorities say the wildfire already has burned about 100 homes and prompted the evacuation of the small town of Pateros, home to about 650 people in Okanogan County. A hospital in nearby Brewster was also evacuated as a precaution.

"There's nobody in Pateros" except a few "stragglers" who stayed, Okanogan County Sheriff Frank Rogers said, adding the fire was burning in the town, although the small business district was believed intact.

Rogers said Friday morning that his team counted 30 homes and trailers destroyed in Pateros, another 40 in a community just outside the town at Alta Lake and about 25 homes destroyed elsewhere in the county of about 40,000 people.

"Two of my people lost their homes," Rogers said.

Rogers said the fire had jumped U.S. 97 between Brewster and Pateros and was burning along the Columbia River. Sections of several highways were closed in the county.

Early Friday, the Okanogan County sheriff's dispatch office said the roughly 300 residents of the Chiliwist Valley, about 15 miles north of Pateros, evacuated late Thursday night.

Two major power lines, one feeding Pateros and one feeding Winthrop and Twisp, have burned, causing a widespread power failure in the county, said Scott Miller, the county's emergency manager.

Most of the Methow Valley from Carlton to Mazama was without power after utility poles burned. The Methow Valley, about 180 miles east of Seattle, is a popular area for hiking and fishing.

About 100 miles to the south, the Chiwaukum Creek fire chased people from nearly 900 homes as it burned near the Bavarian-themed village of Leavenworth.

That fire sent a light dusting of ash over Leavenworth, and the fire's smoke plume rose 25,000 feet into the air. The blaze closed 15 miles of U.S. 2.

Residents of 860 homes were told they should leave immediately, fire officials said. Another 800 homes were less seriously threatened.

Authorities said Thursday that the Chiwaukum Creek fire has grown to more than 10 square miles. It was first detected Tuesday.

"The weather and winds are not in our favor," said fire spokesman Mary Bean. She said the cause of the fire is under investigation.

Worsening wildfire activity has prompted the governor's offices in both Washington and Oregon to declare states of emergency, a move that allows state officials to call up the National Guard.

Information for this article was contributed by Donna Gordon Blankinship of The Associated Press.

A Section on 07/19/2014