FLAGSTAFF, Ariz.  — Firefighters are anticipating strong gusts as they try to fully contain a wildfire south of Flagstaff near the Canyon Vista Campground.

Coconino National Forest officials say crews have maintained 50 percent containment on the 175-acre Fisher Fire and no structures are threatened.

The National Weather Service has issued a red flag warning that will take effect from noon until 8 p.m.

Forecasters say the high temperature is expected to reach 71 degrees with winds at 45 mph and humidity levels between 10 and 15 percent.

Fire spokeswoman Heather Noel says firefighters are spending the day mopping up any hot spots and strengthening perimeter lines around the blaze.

The fire was first reported near the Fisher Canyon area on Friday afternoon.

A wildfire burned in the same area last year.