UPDATE: Lou Vanmeter has been found safely. She is currently with deputies, according to the Dewey County Sheriff's Office.
Below is the original story.
Authorities in Dewey County issued a Silver Alert for a missing woman late Friday morning.
89-year-old Lou Vanmeter was last seen at 7 a.m. Friday at her residence on Jennyville Road in Oakwood.
Vanmeter's clothing description is unknown, but her vehicle is described as a white 2011 Chevrolet Suburban with the Oklahoma license plate HOQ938.
The Dewey County Sheriff's Office said Vanmeter has dementia and may be driving herself to the Edmond/Oklahoma City area, possibly to Mercy Hospital.