The maximum wind velocity for hurricanes over the Atlantic Ocean in 1940-1993 has decreased by 5 km per hour, that is, by approximately 12%. The dotted line shows the linear trend.
Source Adapted from C.W. Landsea et al., 1996. "Downward Trends in the Frequency of Intense Atlantic Hurricanes during the Past Five Decades." Geographical Research Letters, Vol. 23, No. 13, pp. 1697-1700