Wildfire near Yosemite National Park explodes in size

Flames consume a home on Triangle Road as the Oak Fire burns in Mariposa County (AP)

A wildfire near Yosemite National Park in California has exploded in size, prompting evacuation orders for thousands of people and shutting off power to more than 2,000 homes and businesses.

The Oak Fire, which began on Friday afternoon south-west of the park near Midpines in Mariposa County, grew to 10.2 square miles by Saturday morning, according to the California Department of Forestry and Fire Protection (Cal Fire).