How can a 50-year storm event happen twice in one year?
A 50-year storm event does not mean that a storm of this magnitude will only occur once every 50-years. Rather, it is a statistical representation of historical rainfall records. It means that there is a 2% chance that a storm of this magnitude will occur in a given year. It is therefore possible, although not probable, that a 50-year storm event could happen twice in one year.
