National Weather Service United States Department of Commerce

Tropical Storm Milton Strengthening in the Gulf of Mexico; Dangerous Heat in the Southwest

A late season heat wave will continue across portions of California into the Desert Southwest. Meanwhile, Tropical Storm Milton is strengthening in the southwest Gulf of Mexico. Milton is expected to become a major hurricane and bring significant impacts to Florida this upcoming week. Read More >

Flood Return Period Calculator

Though this calculator is worded for the flood event return period it would work for any extreme weather event.

 

Enter the return period (ie..100 year flood)

Percent chance of occurrence

year flood %
Enter the number of years (ie..over the next 10 years)
There is a % chance that a year flood will occur over the next year(s)
year(s)