According to Edmonds police spokesman Sgt. Shane Hawley, the suspect entered the bank around 4 p.m. and presented a note to a bank teller, then fled on foot with an undetermined amount of cash.
The suspect is described as a white male, 35-45 years old, 220-250 pounds, with short brown hair and a long chin beard but no mustache. He was wearing a gray zippered sweatshirt.
Police will release a photo of the suspect on Wednesday, Hawley said.