We get some bad winter weather out here also, we tend to call them Nor'easter, that is when we get way more than just 6" of snow.
At our church we have been running busses for almost 8 years now. We go out no matter the condition, rain,snow,ice,sleet,hail,or even sunny. When it snows outside none of the church members expects a phone call, and we don't make one either, we know their is going to be church. The way we see it as God controls the weather, God wants us to be in church every Sunday, so God is not going to hinder us from attending, it is all about faith,God is testing our faith. We never had any accidents in the snow, RELAX GOD IS IN CONTROL! We did however have alot of services start really late, but we still were there and God has blessed.