By Deborah Bloom and Sergio Olmos

KLAMATH FALLS, Ore. (Reuters) – A growing wildfire in a bone-dry Oregon forest had forced hundreds of people from their homes by Wednesday as it charred more than 200,000 acres (80,940 hectares) and showed no signs of slowing, officials said.

The so-called Bootleg Fire, which has spread through the Fremont-Winema National Forest about 250 miles (400 km) south of Portland since July 6, has destroyed 21 homes and threatened 1,926 more, according to the Northwest Interagency Coordination Center in Portland.

By Wednesday morning, the fire had left a thick haze over nearby Klamath Falls, where the local fairgrounds were turned into a Red Cross evacuation center.

Tim McCarley, one of the evacuees, told Reuters earlier this week that sheriff’s deputies and state troopers showed up at his home just as “sparks and embers were coming down” and told his family “if you don’t leave, you’re dead.”

“This is my first wildfire and I’m going to tell you, it is scary,” another evacuated resident, Sarah Kose, added this week. “You don’t know if you’re going to be the one that loses your house, or you sit there and you watch your neighbor lose their house, and there’s nothing you can do about it.”

The Bootleg Fire is the biggest of several wildfires scorching parts of Western states, where a drought and a recent record-setting heat wave have left brush and timber highly flammable.

So far, it has burned more than 212,000 acres (330 square miles), including about 50,000 acres (20,230 hectares) on Monday alone, and crews have managed to put containment lines around only 5% of it.

In all, 60 large fires have consumed more than 1 million acres (404,680 hectares) across 12 states this season, according to the National Interagency Fire Center in Boise, Idaho, a firefighting group combining eight federal agencies.

Last year, numerous late summer wildfires, fueled by gusty winds and hot, dry terrain, killed more than three dozen people and charred more than 10.2 million acres (4.1 million hectares) in California, Oregon and Washington.

Earlier in the week, flames burning along a high-voltage power corridor connecting Oregon’s electricity grid with California’s affected power supplies, prompting the agency that manages California’s power grid to issue temporary conservation alerts. But as the worst of the heat wave abated, the alerts were withdrawn.

(Reporting by Sergio Olmos in Portland, Oregon and Peter Szekely in New York; Additional reporting by Deborah Bloom and Mathieu Louis-Rolland in Klamath County, Oregon; editing by Jonathan Oatis)