This is just me totally speculating, but in regards to the “the severity of this flood threat didn’t reach people ahead of time” discussion, I wonder how much of that comes from most people now getting their weather from Apple weather app and the like. I’m sure local broadcasters and NWS were appropriately warning ahead of time, but how many people does that reach now? People look at their app and think “oh bummer, rainy week ahead” but maybe didn’t get anything related to the seriousness?