100 year storm

A little factoid I learned today that I thought you all may be interested to know - well those who live in a flood zone will probably be more interested to know this than those who don't.. A 100 year storm does not mean that statistically you are only likely to experience that storm once in 100 years. In fact you could experience a 100 year storm three years in a row. What it does mean is that statistically you have 1% chance of experiencing that storm each year. And, FEMA defines it as meaning you have 26% chance of experiencing that storm during your 30 year mortgage. Kinda changes the meaning of 100 year storm, eh?