Calling cps on my own family

To start this off I want to say that I love my family a lot and even thinking about this is hard.

I’m 19 now, I’m no longer a child, I have an 11 year old brother and toddler twin sisters that have a disability. I love them so so much.

About two months ago I finally left and moved out of my family home, it was forced/my choice to leave after my dad had put his hands on me. It was the first time it had ever happened, but it happened. In the past he has only broken things, and it happened a lot.

I don’t live there anymore, but the problems of him drinking and breaking things have not gotten better. My brother told me how he broke something last night and had made my stepmom cry all day today because of how mean he was being and he took her phone. That was today but there were other arguments that I know of that have happened since I’ve been gone.

The legal part that I’m questioning right now that’s really hard for me to figure out is whether or not I should call cps. I want my siblings to live a happy life and I do want my stepmom be able to get away too, but at the same time I don’t know what would happen if I call. What if he just gets mad and things get worse? What if cps comes and my siblings have to go to foster homes? (My sisters have a disability so this worries me a lot) What if things just get better in time? Would my mom lose her job?

Despite everything, I’m also scared of what would happen to my dad. He’s still my dad. I’m just at a loss and I don’t know what to do or if this even falls into a category where legal action can take place.

Edit: this is in California