There are public ones. I used to live on the south side of town, and the two closest were diventures and the library center.

What side of town do you live on?

I imagine there's one close by. As far as I'm aware I think our greatest risk is earlier on, so most businesses should be open in the event we have a tornado.

https://sgfcitizen.org/weather/public-tornado-shelters-in-springfield-who-can-use-them-how-to-get-there/