Alyce Schorle, 74, was last seen on Thursday, Jan. 26 at about 10:15 p.m. near the Galilee Pavilion on Penn Valley Road in Falls Township, police said in a statement.
Investigators said Alyce typically uses a walker but left it at home. They have also expressed concerns about her mental state.
"She expressed thoughts of self-harm and is believed to be in considerable danger, given her age and environmental conditions," said Falls police.
Alyce is 5-foot-5 and weighs about 125 pounds, authorities said. She may be wearing a black sweater dress with white stripes.
Anyone with information should call the department at 215-328-8519 or 911.
Click here to follow Daily Voice Bristol and receive free news updates.