I spent a dozen years as a certified trainer for first responders/incident commanders and still am one sometimes. Let me break my comments into micro and macro.
Micro: the recent Kerrville incident. The NWS did its job and did it in a timely manner -- despite reckless cuts by Trump/DOGE/etc. The issued an urgent flash flood warning at 1:26 AM, which should have been taken very seriously because that area has a long history of flash flooding. Local officials should have woken
everyone up any way they could: tornado sirens, local and state police cars with full sirens and lights, fire trucks, civilian pickup trucks with horns, anything, everything. If possible they should have brought in a helicopter with a loudspeaker.
The river was already rising at that point, but slowly, and rose only moderately (per the USGS gauge, linked below) until 5:15 AM. That's when the flow went exponential. So they had the better part of 4 hours to wake people up and get them moving away from the river. That includes the girls camp that's been so often discussed: local officials knew it was there and knew it was full. And yet they didn't even manage to send a squad car over there to wake up everyone. If they'd done that, those girls could have
WALKED to safety in the time they had available. (And of course if there were buses or other vehicles, it'd have been faster.)
Here's the gauge -- note that the left-hand vertical axis is logarithmic.
Guadalupe Rv at Kerrville, TX – 08166200
Every responsible locality has plans for this, doubly so if it's something that's happened before -- which in this case, it has. While there's always some improvisation in emergency response, most of this should have come down to "pull out the red binder, open to page 1, and start working through the checklist -- you know, the one we've rehearsed every 4 months for the last 6 years." Every person should already know what they're going to do, like "wake up every school bus drivers, tell them to drive to the X high school, start the buses, and head to their assigned locations to pick up people" or "get someone on the bridge upstream with a spotlight on the river so that we can see the flood coming before it gets here and registers on the gauge". The incident commander should supervise all of this pre-planned activity, making on-the-fly modifications as necessary...and if the plan is a good one, and if it's been kept updated, and if it's been rehearsed well, then there shouldn't be too much improvisation needed.
This by no means guarantees success. Things go wrong, equipment breaks, miscommunications happen. But it gives the best chance, and if even half of this had happened in Kerrville, it would have saved a lot of lives.
Macro: There is never money or time for disaster preparation, avoidance, training, mitigation. There is usually money for disaster cleanup. Oh, and there are "thoughts and prayers", which are (a) useless and (b) an attempt by the cheap, lazy, and incompetent to excuse their complicity in all the death and destruction that just happened. We don't need thoughts. We don't need prayers. We need science (like the NWS and NOAA do), we need data (e.g. the best forecasts they can possibly give us), we need training and equipment, we need plans, we need cooperation, we need clear messaging, and we need the money required to do all these things. Give us that and we have a fighting chance -- and our historical record when given that chance is damn good. Deny us that and you're going to get Kerrville on a regular basis. (Doubly so given global warming and its effect on locally-intensified weather events.)
This is already long, but I want to ask you all to consider one more thing. Right now, as you're reading this, there are people out there who are trying to recover all the bodies. (They know it's not a rescue. Not any more.) They would have much rather been there to evacuate all those people
which they could have done if all the stuff I said above had happened. They could have met those little girls and comforted them as they moved them the hell out of the way of the wall of water that came down the Guadalupe River. But they didn't, because they couldn't. And now they're looking for them, and pulling their battered little bodies out of the mud. One...after another. I have done this work, and I hated it. I don't sleep well any more and probably never will again. But it had to be done. And now all those people working on site are going through the same thing. They're doggedly trying to provide closure to all those waiting families, and they're pushing themselves to physical and psychological exhaustion to do it. They're paying the price. So spare a kind thought for them, please. They're going to need it.