You wouldn't believe how cold it's been in Australia some nights. Nothing like the changes occurring in the Northern hemisphere, which is a reason I am glad I live here. We don't get glaciation in Australia which means even if the worst Vault-Co predictions come true, we'll still be able to survive relatively intact as a society, because others have done it in previous Little Ice Ages and perhaps even major Ice Ages. This is the reason it is so important to me to get my permaculture underground lab going, to grow food in.
You won't survive, however, if Robert Felix is right and you suddenly wake up one morning under seventy stories of snow in North America.