This means people dying. To move people to a community hall you need enough transportation, clear roads, working communication, and many other things that are indirectly relying on power being available or the disaster plans working properly. (Which they sometimes won't) Also this would have to work for everyone at risk - not for the number of deaths we know about, but likely 100x that.
You can't ignore the effects of that once-a-decade failure and hope things will work fine.
This means people dying. To move people to a community hall you need enough transportation, clear roads, working communication, and many other things that are indirectly relying on power being available or the disaster plans working properly. (Which they sometimes won't) Also this would have to work for everyone at risk - not for the number of deaths we know about, but likely 100x that.
You can't ignore the effects of that once-a-decade failure and hope things will work fine.