MariLouise Johnson, 57, who is believed to be suffering from dementia or some other cognitive impairment, was reported missing Friday.
She was found safe Saturday afternoon, police said.
Developed in 2007, Silver Alert is a system that quickly notifies the public about missing endangered adults who suffer from dementia or other cognitive impairments, such as Alzheimer's disease.
It also allows caregivers and nursing homes to report a person missing. In the past, only a family member could report an adult missing.