Orange tabby cat with blue collar

I lost my orange tabby cat yesterday around 6pm. It’s a short-haired guy, about the size of a medium loaf, with bright green eyes and white paws. He’s wearing a blue collar with a tiny silver heart-shaped tag, and there’s a small notch in the left ear from a past scuffle. Last seen near the Bay City Central Library on Center Avenue in Saginaw-Midland-Baycity. This cat is part of our family and has sentimental value—my younger daughter adopted him from the shelter last year, and we’re worried sick. If anyone has seen him or knows where he went, I’d really appreciate a heads up.