Under the “principles of burning man” (which are largely not known or ignored by a sizable portion of of attendees in 2023), you should be prepared for this so

Under the “principles of burning man” (which are largely not known or ignored by a sizable portion of of attendees in 2023), you should be prepared for this sort of event with enough extra food and water to wait it out. And I think a large fraction of the attendees are. If this was the camp I used to run with, the collective response to this would be to view it as an annoyance, but not life threatening - everyone was on top of their shit and had enough food, water, and shelter to last out something like this. And in fact, people would give you shit if you came around asking for help saying that you didn’t expect rain like this. You’re very explicitly told when buying a ticket that shit like this can happen and you should be prepared to deal with it yourself. Whether this turns into something requiring external help or evacuation depends on what portion of the attendees really are on top of their shit in 2023.