weather and attendance

Hi all, I've been transferred in another office for help the last 3 weeks about 5-6 miles away.Where I stay the snow is a bit heavier than the city centre where my office is located. Contacted my manager who told me its up to me but he thinks its manageable to drive there. Took the van (they give me the van to go back and forth from my place) but honestly it was too dangerous to move so after 10 mins of drive and 2 near misses I returned home. Called them and they told me to take the bus which I did. On my way three buses where stuck unable to move. Called the manager in my local office and he told me to sort it with the other manager. So after 1.5 hours outside trying to make it to the office I called them and told them i wouldn't make it. My manager said that i could make up my hours at my day off but I feel a bit worried since im on probation period and dont know how it will count towards my attendance. Where do I stand. Whats your opinion? Honestly did my best to go to work today but here I am. Sorry for the long post.