Why would someone on Daily Kos make a group like this?
Simple, disasters happen. No amount of wishing and hoping is going to stop that. Until we can control the weather, Hurricanes, Tornados, Ice Storms, Wind events, Floods, are all going to happen. So will man made events - pollution spills, massive store house fires, de-railed trains, fires and economic downturns.
Since they will happen, it makes sense to take efforts to 1) prevent them, and 2) get yourself and family ready to reduce the effects of the disasters. We can't, as individuals do much about the first part. (yes, join groups that are trying to get laws changed and such)
But we can do a lot about the second.
This will be advice on getting read for a disaster, in a rational and realistic manor with out the paranoid "the black helicopters are coming to take your guns and lock you in a FEMA Camp" Bovine Fecal mater you see spouted to often on social media (more from he right, but from the left too)
More below the squiggle.