Firefighters in Southern California say hot, dry winds have died down and they're making great progress against a wildfire that's burned 27 square miles of farmland.

Ventura County fire spokesman Bill Nash says the 17,500-acre blaze near Moorpark is 75 percent contained Friday morning. Crews nearly doubled the level of containment since Thursday and are concentrating on the eastern and western flanks.

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Full containment is expected Saturday.

Nash says only 25 homes remain threatened, and those are mainly scattered farmhouses.

A red flag warning of extreme fire danger remains in effect for triple-digit temperatures and low humidity, but winds that could have pushed the blaze through tinder-dry grass have eased.

About 2,700 firefighters are combating the blaze.

More on this story from MyFoxLA.com

More on this story from the Ventura County Star