>>509877852but it wouldn't stop tragedies like this, because people have a tendency to be misinformed, or out of reach of messages, or simply 'take their chances' either out of ignorance, arrogance or out of necessity because of their situation.
so many elderly or the infirm can't even do anything to 'evacuate themselves', much less get the energy to care, they always take their chances.
Even in the most advanced society with warning systems, you'd still need to physically remove people and if they don't want to be removed you have to deal with that implication as well.