WINTERS, Calif. — Authorities have ordered evacuations of homes on two rural roads after a wildfire in Northern California quickly surged to 1.5 square miles (4 square kilometers).

California Department of Forestry and Fire Protection says evacuations were ordered Thursday.

It blaze forced the closure of State Route 128 near Lake Berryessa. It is 15 percent contained.

The state’s largest current wildfire has grown to more than 16.5 square miles in the rugged southern Sierra Nevada.

The U.S. Forest Service says the blaze in Sequoia National Forest about 17 miles north of Kernville is 8 percent contained.

The fire has been burning in brush and timber in the Schaeffer Mountain region near the Kern River since it was ignited by lightning on June 24.

Several other small wildfires were burning around the state.