Mastodon bots which mirror the NWS warnings back them up
What failed was local officials not succeeding in alerting people — in large part because they had plan or mechanism available to do so with the roughly one-hour warning that current meteorology can provide for specific flash floods like this.
Archived copies of the article:
Foam mattresses float. Just keep a bottle of water and a hand axe under your pillow 👍
I sleep in a hammock, but I’ll keep a pool noodle nearby. If my second floor bedroom on a hill floods then I might actually be able to get out of my not-to-modern-code high bedroom windows without using my step stool.