what is the criteria used in naming the torential rains and storms like.....catrina,hurricain felix etc?

Answer 1

. " ...Since 1953, Atlantic tropical storms have been named from lists originated by the National Hurricane Center. They are now maintained and updated by an international committee of the World Meteorological Organization." ...
"...Tropical Storm--A depression becomes a tropical storm when shower and thunderstorm activity moves over the closed circulation, and sustained winds reach at least 35 knots, or 39 mph. At this point, the system is capable of causing minimal damage.
Hurricane--A tropical storm becomes a hurricane when the closed circulation becomes an eye, and sustained winds reach at least 65 knots, or 74 mph. At this point, the system is capable of causing significant damage. "

Answer 2

every year, when it's quiet, like in winter, the best weathermen get together and pick names, put them in alphabetical order and that list is how each storm is named as it happens.... if they run out of names in years when there's lots of storms, they go to other means... numbers or Alpha, Beta, etc.... not sure on that part... need to look that up....