Missing woman, 5 ft 6 in, red jacket

I lost my sister yesterday around 3pm near the Medford Public Library on Central Avenue in Medford-Ashland. She's about 28 years old, 5'6" tall with shoulder-length brown hair and a bright red windbreaker. She was wearing a light gray scarf, black jeans, and white sneakers. She has a small crescent-shaped tattoo on her inner left forearm and a silver hoop earring in her left ear. She tends to be shy but is friendly once you talk to her, and this is really scary — I'm worried sick and just want her back safe. If you've seen her or have any information, please contact me as soon as you can.