The main causes are... Either loss power cause it is a blizzard out there... So, I'm pretty sure most people have lost their power.
The elderly that live alone they usually don't survive (at least around here they don't) in the winter.
and sometimes yes... Car accidents cause people can be stupid and not think about the weather and how dangerous and deadly it really can be. It's not just homeless and lack of shelters... It's the blizzard in general, and people being stupid trying to be super heroes.