Analysis: Hurricane Ian and the new era of rapidly accelerating storms
Ian’s rapid intensification as it neared Florida, something that is relatively unusual from a historical perspective but clearly linked to factors correlated to climate change.As he noted, that storms like Ian are getting stronger faster provides a very real and immediate risk to areas in the hurricane’s path.
“The danger of a rapid intensification shortly before landfall is that people will be caught off guard by the stronger storm,” Freedman wrote, “and get stuck in a vulnerable spot for storm surge flooding, damaging winds or both.”on the speed and location of hurricanes near the United States. Using this data, segmented into six-hour observation periods, we can get a sense of how the number of rapidly intensifying storms is increasing.
The most a hurricane’s wind speeds have increased over a six-hour window in NOAA’s records was 63 mph. There are 12 storms, though, where speeds have increased by at least 35 mph over that period. Of those 12, seven have occurred since 2000. If we look at the hurricane data by time periods, we can see the rise in the number of storms in which wind speeds increased rapidly. As a function of the percentage of all six-hour periods catalogued in the NOAA data set, the density of periods in which wind speeds picked up by only 9 mph is down. The percentage in which wind speeds increased by 23 mph or more is up.
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