ELK SPRINGS, Colo. (CBS4) – A wildfire burning in Moffat County has exploded in size.

The Winter Valley Fire is now larger than 6,400 acres, growing almost 3,000 acres since Thursday.

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The Winter Valley Fire (credit: BLM)

It’s burning near Elk Springs, which is just south of Dinosaur National Monument.

Strong wind gusts of up to 50 mph are hampering firefighting efforts.

(credit: CBS)

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Fire officials said more than two dozen structures are threatened, but all recommended residential evacuations were lifted Friday night.

The cause of the fire is unknown, and under investigation.

Wildfire Resources

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Wildfire Photo Galleries

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– See images from the most destructive wildfires (Black Forest, Waldo Canyon, High Park and Fourmile), the deadliest (Storm King) and largest wildfire (Hayman) in Colorado history.