Comment by fwlr

In Australia we have some experience with this scenario (usually with higher temperatures) and some of the measures we have found effective are “total fire bans”, “jail the arsonists for extended periods of time”, and for negligent companies whose insufficient vigilance caused the fire specifically, “levy steep fines” and “find in favor of the plaintiff in class-action lawsuits for significant fractions of the company’s net worth”. Perhaps these measures could be of use here!