You have probably seen pictures in which a cone of debris was visible that was created by a landslide or an avalanche. Enormous amounts of material are set in motion and then stop at some point. At best, they leave no damage other than changes to the landscape; at worst, they cause great destruction and claim human lives. As far as I know, it is only possible to estimate in advance where this mass will end up and how great the threat will be. Preparations can therefore only be made to the extent that a potentially endangered area is warned in advance, sensitised and, where possible, sensible safety precautions are taken. You can't control the rest, neither the timing nor the extent. But an alert awareness is the best preparation in this case. It is precisely this comparison that Jesus needs when he speaks of his return. Are you appropriately alert for this event?
I wish you an extraordinary day!