The Carstens fire, which began Sunday afternoon, has burned about 1 1/2 square miles. It is burning in an area about six miles northeast of Mariposa off Highway 140, said California Department of Forestry and Fire Protection spokesman Daniel Berlant.
"The strong winds and dry conditions have been major factors," Berlant said. "The fire moved quickly."
The Red Cross has set up a shelter in Mariposa. The fire has not been contained at all.
Berlant said winds will again be a factor on Monday, with the forecast estimating gusts of up to 20 miles per hour.
Meanwhile, a smaller fire near the Madera County city of Friant has burned 482 acres. The Rolling Hills fire is 80 percent contained.