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Weather scientists say we need a
category for hurricanes. This is because
change is causing more
storms. The scientists want to extend the
1 to 5 scale used to measure hurricanes. A category 5 is
the strongest. This is when
reach 252 kph. The scientists say a
category of 6 is needed for winds of over 309 kph. They say that in the
decade, there have been
hurricanes and
that would be a category 6. Hurricanes start in the Atlantic Ocean, while typhoons develop in the north-western Pacific Ocean.
