Well, we know that the NWS produced the warnings about an hour in advance, that the staff who communicate with local officials had been fired, that Texas abused their emergency alerts on phones so people largely disabled them, and that local politicians were unwilling to invest in a local alert system because of anti-tax sentiment.

So its pretty clear the key problem was getting the warning to people. And that requires investing in systems to do that and having the discipline to limit their use when not life-critical