I do believe you hve just given yourself the answer:
"just mind my own business and focus on my life"
I know it will be hard to 'mind your own business', however I do believe that his 'anger' is directed really at himself, in that he is not yet ready to see 'how' his life has gone to 'hell in a hand basket.' 'How' is life has become so unmanageable. So the anger flares.
And the fact that he starts drinking at noon, that is just when the alcohol level in his body gets down to a level where he NEEDS more alcohol. Thus even trying to talk to him in the morning you would still be talking to the bottle.
Stay focused on you! Whether you are using Alanon and/or one on one counseling, or some other means, maybe 'up' the meetings, and find some face to face folks that you can talk to when needed.
I believe that each of these 'episodes', although you end up feeling intimidated, you are also getting closer to the point where you will leave, to get some peace and serenity in your life.
Remember, you are not alone, we are walking with you in spirit, and are here for you!
Love and hugs,