Reliable global records of hurricane intensity only go back about four decades, when weather satellites began scientists to accurately estimate the strength of storms. In the years since, hurricanes appear to be getting stronger, according to a 2020 paper from researchers at NOAA and the University of Wisconsin. They found that the likelihood that a cyclone will reach Category 3 wind speeds — the threshold to be designated a “major hurricane” — has risen about 25% since 1979, as extra heat in the oceans and atmosphere gives storms more fuel to grow.
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