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CNF photo shows helicopters at work on the fire earlier Wednesday before gusts sent the Slide Fire to 4,500 acres.

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Wind whips Slide Fire to 4,500 acres; new fire reported at Woods Canyon

The Slide Fire has now billowed to 4,500 acres even as 500 fire personnel are on the scene in Oak Creek Canyon.Winds have been coming from the southeast and gusting around 32 mph. Now, up to 300 structures are potentially in the path of the fire. "Extreme fire behavior" has been observed.