Gray tabby with white paws, missing since yesterday

I lost my gray tabby cat, medium-sized and short-haired with green eyes and a tiny heart-shaped white patch on his chest. He was last seen yesterday around 3pm near the Riverfront Park entrance on West Yakima Ave, by the playground. He’s wearing a blue collar with a small silver bell. If you’ve seen him, please let me know—this cat is my constant companion and means the world to me; I really need him back.