One of the problems with these kind of cases is that often the authorities put out warnings of dubious value that people have learned to ignore because in most cases there is not anywhere near the risk that the warning might have you believe.

Sort of like the "extreme cold" warnings now being issued. It is not more cold than people are generally used to and know how to handle already. It seems pointless to issue the warning in the first place since it will just teach people to ignore the warnings.