BOISE, Idaho — Efforts to contain a large wildfire in southern Idaho by Sunday evening were dashed as winds picked up and the region’s grass and sagebrush provided readily available fuel for a blaze estimated at 117 square miles.

But conditions improved elsewhere in the West, helping crews gain ground on wildfires in Colorado and Utah.

The fast-moving fire west of Twin Falls, Idaho, was first spotted Saturday afternoon and grew to 75,000 acres within 24 hours. The wildfire initially threatened a handful of homes near the hamlet of Roseworth, 25 miles southwest of Twin Falls, but winds shifted and moved the blaze north.

By Sunday morning, no structures were being threatened by the fire, which was 20 percent contained. Crews had hoped to have the wildfire fully contained Sunday evening but weren’t expected to hit that goal, said Kyli Gough with the Bureau of Land Management.

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