The most destructive hurricanes hitting more often

(12 Nov 2019) FOR CLEAN VERSION SEE STORY NUMBER: apus126533



Big, destructive hurricanes are hitting the U.S. three times more frequently than they did a century ago, according to a new study.

Experts generally measure a hurricane's destruction by adding up how much damage it did to people and cities.

That can overlook storms that are powerful, but that hit only sparsely populated areas.

A Danish research team came up with a new measurement that looked at just the how big and strong the hurricane was, not how much money it cost.

They call it Area of Total Destruction.

"According to the study, we should see more of these extreme storm footprints, extreme what they call area of total destruction is there. The way they measured this, so we should be seeing be seeing more of these or actually should also be seeing fewer of the weakest storms, overall the study found, couldn't find a much of a change in the number of total storms, it's the just the bigger, badder ones are becoming more frequent and the wimpier ones are becoming less frequent," said Associated Press' Seth Borenstein.

Looking at 247 hurricanes that hit the U.S. since 1900, the researchers found the top 10 percent of hurricanes, those with an area of total devastation of more than 467 square miles (1,209 square kilometers), are happening 3.3 times more frequently, according to a study in Monday's

Proceedings of the National Academy of Sciences.

Eight of the 20 storms with the highest area of total destruction since 1900 have happened in the last 16 years, a much larger chunk than would randomly occur, Grinsted said.

Two storms stood out from the rest: 2017's Hurricane Harvey, with an area of total destruction of 4,570 square miles (11,835 square kilometers), and 2005's Katrina, at 2,942 square miles (7,621 square kilometers). The average was 159 square miles (411 square kilometers) - which means

Harvey's destructive footprint was 30 times larger than average.

Climate scientists have predicted and shown that higher temperatures in the oceans and the atmosphere, a result of burning coal, oil and other fuels, is creating more extreme weather and storms.



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