The Sunflower Fire south of Payson is now 80 percent contained, and the number of firefighters battling the blaze has dropped to 45.
Officials said Tuesday's flight over the fire revealed dispersed hot spots within the fire perimeter.
The fire, which started May 12, has reached 17,618 acres.
Incident Commander Brian Achziger said the dead trees do not pose an immediate threat and will likely continue to smolder and burn until the area gets precipitation.
Fire crews are working closely with members of the Burned Area Emergency Response (BAER) team to remove brush from drainages.
Management of the fire is expected to be transferred to the Tonto National Forest this weekend.
The Sunflower Fire area remains closed. Fire restrictions in the Tonto National Forest are also still in effect.
The cause of the fire is under investigation.
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