For me, its always scariest when driving in fog or white out conditions and not so much about what is in front of me because I will slow down but because of those people who come at you, driving too fast from behind. Good to know you came out of it okay.
The worst time are the first snow storms, at least down here. Seems everyone has forgot how to drive in ice and snow! Takes a second and third storm to get them back into slipping and sliding frame of mind. Good luck this season!