Published: Fri, June 08, 2018
Sci-tech | By Brandy Patterson

Unhurried hurricanes: Study says tropical cyclones slowing

Unhurried hurricanes: Study says tropical cyclones slowing

Scientist James Kossin said as little as a 10 per cent slowdown could double local rainfall and flooding impacts caused by 1C of warming.

"The slower a storm goes, the more rain it's going to dump in any particular area", Kossin told the Associated Press. To help, the Texas General Land Office partnered up with the University of Texas to conduct a survey for Texans who live in the affected areas, asking if they are still displaced and how much damage to their homes still need to be fixed.

And at the same time, a hotter atmosphere can hold more moisture.

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Christina Patricola, a scientist with the climate and ecosystem sciences division of California's Lawrence Berkeley National Laboratory, called Kossin's work "important and new" and says she found it "pretty convincing".

Atlantic Basin storms have slowed down by 6 percent over water but by 20 percent over land. "The storms will stay in your neighborhoods longer".

That's the real risk of a slower storm.

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Kossi hopes that scientists will begin building models that show which communities are likely to face the most risk. The storms, in effect, are sticking around places for a longer period of time. "These are not good things to be combining", he says.

The U.S. National Hurricane Center said Tropical Storm Aletta was centered about 425 miles (680 kilometers) southwest of Manzanillo, Mexico, late Wednesday.

The research, published today in the journal Nature, measured cyclones from 1949 to 2016 and found that the speed at which they move has slowed by 10 percent. "That has serious implications for inland flooding and urban infrastructure". "Not quite like a cork in a stream, but similar", he said.

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Therefore, it would make sense that if the flow around the hurricanes and typhoons is moving slowly, the storms will also be moving slower, which Kossin believes is what he is observing in the data. "And, unfortunately, this signal would point to more freshwater flooding".

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