It depends on what area you're in.
Really depends on the place you are looking at.
A 100-year flood is a flood of a given size for a particular area that has a 1% chance of happening in any given year. On average such an event will happen once per century. Remember, though, that this is merely an average; it is entirely possible for two 100-year floods to happen within a year of each other or for none to happen for thousands of years.
Tornadoes can happen at any time of year but they are most common in sprind and early summer.
august - october
There is no set time of year that they happen. They can happen at any time. It is better when they happen during the southern hemisphere's winter, as the nights are longer and darker then, so they are more spectacular.
Tornadoes are most likely to occur in the spring and early summer, but they can happen at any time of year.
Tornadoes can happen at any time of year but occur most frequently in spring an early summer.
Tornadoes can happen at any time of year but most often occur ins spring and early summer.
Friday night because get the most drunk
Tornadoes can occur any time of year but it is most likely to happen during a thundery and harsh spring.
No. Contrary to popular belief a 100 year flood does not occur once a century. The term means that there is a 1% or one in a hundred chance of such a flood occurring in any given year. It's quite possible to have two 100 year floods in a row.
Yes they can. They can happen at any time of year. Spring is actually the most likely time of year to have tornadoes.