How Is Climate Change Fueling Hurricanes?

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NASSAU, BAHAMAS – As Hurricane Melissa carved a destructive path through the Caribbean this week, scientists say it’s another stark reminder that climate change is making hurricanes stronger, wetter, and slower.

Research continues to show that warming oceans and rising greenhouse gas emissions are fueling more intense and longer-lasting storms. According to the latest data, climate change has increased rainfall rates in hurricane-force storms by 8% to 11%, and experts warn that future storms could become even more powerful.

Over the last 40 years, the ocean has absorbed nearly 90% of the excess heat trapped by greenhouse gas emissions. Much of that heat is now stored near the surface, where it acts as fuel for hurricanes, strengthening winds and increasing rainfall.

“The intensity of a cyclone is driven by ocean temperature,” said Ralf Toumi, Director of the Grantham Institute. “The warmer the ocean, the more moisture it drives into the atmosphere, and that moisture is the real fuel for hurricanes, cyclones, and typhoons.”

Scientists also warn that the traditional hurricane season is shifting. As global temperatures rise, conditions favorable for storms are lasting longer and expanding into regions that historically never faced major hurricane threats.

Perhaps the most alarming example is Hurricane Melissa’s rapid intensification, with wind speeds surging by 70 miles per hour in just 24 hours, transforming it from a tropical storm into a Category Five monster.

Climate experts say Melissa’s explosive growth is part of a broader trend: storms are getting stronger, faster, and harder to predict.

As the Caribbean begins to recover from Melissa’s impact, researchers say the message is clear, climate change isn’t just reshaping our environment; it’s rewriting the rulebook on hurricanes.