On Monday, a paper published in the journal Proceedings of the National Academy of the Sciences, or PNAS, concluded that large Katrina-sized hurricanes were twice as likely to form off the United States’ southeast coast in hotter years than they were in colder years.

The analysis, which focused only on the North Atlantic, also concluded that the frequency of hurricanes with large storm surges has been increasing since 1923.
The study is unique in that it relies primarily on storm surge data taken from tide gauges along the Gulf Coast and Eastern Seaboard of the United States.
This story was provided by Monte Morin of the Los Angeles Times.