I'm not sure how to ask my boss if I can leave early because of weather (specifically snow). I came in this morning, to get some work done before it got worse. Well it's worse now and the roads are starting to get really bad. Not to mention, I live a half hour away in good weather; I'm already expecting a long trip home.
How should I ask my boss if I can leave early? He doesn't seem to be in a rush to leave himself, but I'm pretty sure he lives closer. Some co-workers haven't come in at all today. I can't seem to find a policy on my company's intranet regarding weather.