A wildfire has burned through nearly 46,000 acres and closed two highways north in Lake County, north of San Francisco, The Guardian reports. A firefighter was killed in a second fire, near the border with Oregon.

According to The Guardian, the Rocky fire, along northern California’s inland coastal range, had grown in size by about 20,000 acres since Saturday. It has destroyed 50 buildings, including 24 homes, and still threatens more than 6,000.

The fire broke out on Wednesday and was only 5% contained by Sunday. Around 12,000 people are being evacuated or have been evacuated from the area.

The Frog fire, which killed a firefighter on Thursday and has grown to 3,000 acres, is also about 5% contained.

The firefighter, 38-year-old David Ruhl, died in the Modoc National Forest. Forest spokesman Ken Sandusky said Ruhl died alone, which, as an incident commander on the fire, was not unusual. He declined to release further details on Ruhl’s death.

All photo credits: AP Images. Contact the author of this post: brendan.oconnor@gawker.com.