The Siskiyou County Sheriff's Office is asking for the public's help in locating a missing at-risk woman.

78-year-old Sally Nolan was last seen Monday in the Lumgrey Creek area near Highway 96.

She was wearing white pants and a multi-colored blouse.

Nolan was driving a 2000 white Chevy Malibu with California license plate number 4TVS244.

She is 5-feet, 3-inches tall and weighs 170 pounds with brown hair and blue eyes.

If you know anything, call the Siskiyou County Sheriff's Office at (530) 842-8303.