BOISE, Idaho — A wind-driven wildfire burned its way through sage and pine trees near the Idaho mountain resort community of Sun Valley as sheriff’s deputies expanded evacuation orders to 1,600 homes

The evacuation orders for the 100-square-mile Beaver Creek Fire included homes in drainages and foothills west of the towns of Hailey and extending to north of Ketchum in central Idaho.

More than 600 state and federal firefighters were working to get the blaze under control and protect property in the affluent resort region that’s a second home to celebrities such as Arnold Schwarzenegger, Tom Hanks and Bruce Willis.

Another 1,000 firefighters were expected to report to the scene, said Shawna Hartman, spokeswoman for the Beaver Creek Fire.

Fire managers say the fire grew rapidly Friday thanks to wind gusts topping out at 30 mph, low humidity and tinder-dry ground fuels.

Managers at the Sun Valley Ski Resort turned on water cannons that are normally used for wintertime snowmaking.

In addition, some private insurers have sent in their own crews to provide structural protection for homes with values that can stretch into the millions of dollars.