hurricane season in the
Atlantic Basin, which includes the North Atlantic Ocean, Caribbean Sea
and Gulf of Mexico, runs from June 1 to November 30 each year. In the
eastern Pacific, the season begins on May 15 and ends November 30. Of
course, hurricanes and tropical storms can and do form outside these
time periods, albeit rarely.
tropical systems are
named from lists maintained and updated by an international committee of
Meteorological Organization. Six lists are used in rotation. Thus,
the 1999 list of names will be used again in 2005. At the beginning of
each season, the first storm is always the A storm no matter how many
storms formed in the previous season. A seperate set of six name lists
is used for Eastern Pacific storms. For storms that form elsewhere in
the Pacific Ocean, around Australia and Papua New Guuinea, or in the
Indian Ocean, names are used sequentially. In other words, if the last
storm of the 1999 season was the M storm, the first storm of the 2000
season will have a name beginning with N. When the bottom of one list is
reached, the next name is taken from the top of the next list.The only
time that the name lists are changed is if a storm is so deadly or
costly that the future use of its name on a different storm would be
inappropriate for reasons of sensitivity. To see the various name lists
for the world's tropical systems and to learn more about the retirement
of hurricane names, please see the National Hurricane Center's page on
the topic at http://www.nhc.noaa.gov/aboutnames.html.
& hurricanes categorized in terms of strength?
tropical system first
begins to organize, it is initially called a tropical depression. Once
sustained wind speeds reach 39 mph, the system is upgraded to a tropical
storm and given a name. If a tropical storm intensifies to the point
where sustained winds reach 74 mph or greater, it is classified as a
hurricane. The strength of a hurricane is categorized by the Saffir-Simpson
scale. There are five categories on the scale which are used to estimate
the storms potential for property damage and flooding were it to make
landfall. Details about the Saffir-Simpson scale can be found at http://www.nhc.noaa.gov/aboutsshs.html.
can I find out more
about tropical storms and hurricanes?
to an abundant
collection of Frequently Asked Questions are available on the National
Hurricane Center's web site. The information is available in both English