This type of evacuation is beyond the limits of a BOB. This is where you pack for in case there's no home to which you can return. For wildfires here I start packing the truck with the knowledge that if I need to evacuate it's because there's a real possibility that the house will not be standing when I return. You start packing early knowing that anything you leave may be gone forever. Beautiful homes will turn to glowing embers -- sad.