"Almost". That's the important thing.
If you had hit him you could be given a ticket. If you hit him and injured him you could be arrested. But a near miss, with no cop seeing it. Just count yourself lucky and be more careful in the future.
If you didn't hit him, you don't have anything to worry about. On the off chance that you get contacted (I really doubt this will happen), all you have to say is that it was snowing and you didn't see someone but you stopped before hitting him.
You missed him. You can't get arrested for "almost" hitting a pedestrian.
Almost hitting someone is not against the law.
YER FINE.....IF YOU DIDN'T HIT HIM IT'S HISTORY.....GOD BLESS!!!!