The late summer news has been dominated by hurricanes in the Caribbean
and the Gulf of Mexico: first there was Hurricane Harvey, which caused
devastating flooding in the US city of Houston, Texas, and now Hurricane
Irma has wheeled through the Caribbean and will strike Florida over the
weekend.
One of the questions that have arisen has concerned the naming of the hurricanes. Why Harvey? Why Irma?
The
task of naming the storms falls upon the World Meteorological
Organisation, the highest authority of weather experts in the world, who
meet on a regular basis to discuss the patterns of
weather and the
effects that extreme weather have.
They have created zones in
which regional organisations under their auspices pick the names:
Atlantic hurricanes such as Harvey and Irma are named by the United
States National Hurricane Center.
When they name hurricanes and
tropical storms, they go through a list of accepted names, both male and
female, before choosing one.
They begin at A as the hurricane
season begins, working through the Latin alphabet. If there are more
than 21 hurricanes in one season, they move on to the Greek alphabet.
They alternate between male and female names while skipping the letters
Q, U, Y and Z.
Hurricane names can be retired if they are
suitably catastrophic or destructive. Hurricane Mitch, the second
deadliest Atlantic hurricane ever, killed over 10,000 people in Honduras
and Nicaragua in 1998 and resulted in the name Mitch being taken from
the register permanently. It was replaced by Matthew, though that again
was retired after 2016's Hurricane Matthew which struck Haiti.
It is as yet unclear whether the names Harvey and Irma will end up retired.
Previously,
hurricanes were named after the places where they struck - the
Galveston hurricane of 1900, for example - or the day on which they
occurred, usually using the Saints Day that was most appropriate, such
as the Santa Ana hurricane that struck Puerto Rico in 1825.
It
isn't always so serious: in Scotland in 2011, an extratropical cyclone
(as hurricanes can be known in non-tropical areas) was named Friedhelm
by weather authorities but was popularly known as Hurricane Bawbag after
the Scottish dialect word for 'scrotum' or more idiomatically, for a
coward.
While it was initially a joke trend on Twitter, it later
was used by authorities and widely in the media, with politicians
mentioning in Parliament
Source: Ladbible.com
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