Here in the arctic northeast we have lots of dangerous driving conditions in the winter. Meetings used to be cancelled maybe once a year. The night meetings were the worst b/c it's so dark and the snowplows aren't out.
They said reminders from the platform each yr. they hesitated to cancel mtgs and people should just stay home if it was really bad in their neighborhood. But then they were looked down upon if they didn't show and the mtg hadn't been officially cancelled.
The mtgs were cancelled by a phone relay system--each book study host would call all those in his/her group. They said it was practice for the big A--so we would know how to contact each other to signify it was time to go into hiding.
I don't remember making up the missed sessions. FS was never cancelled. If they cancelled FS every time there was bad weather, there'd be no FS.