Climate Change Is Making Hurricanes More Intense

Scientists warn that hurricanes are growing more powerful as global temperatures rise. These storm systems draw their energy from warm ocean water. Hotter oceans are driving stronger storms that intensify faster.

In October 2025, Hurricane Melissa tore through the Caribbean, making landfall in Jamaica as a Category 5 storm and killing at least 30 people. The death toll is still rising. Researchers say that warmer-than-average ocean waters and other climate-change-related factors increased the storm’s potential damages by up to 50%.

This follows the devastating hurricane season of 2024, when Hurricane Helene caused historic flooding across the Southeast United States, leading to at least 250 deaths and leaving millions without power.

Why is this happening?

Human activity is causing rapid changes to our global climate that are contributing to extreme weather conditions.

When fossil fuels are burned for electricity, heat, and transportation, carbon dioxide, a greenhouse gas that traps solar radiation, is released into our atmosphere.

Over the past century, massive increases in carbon dioxide, methane, and other greenhouse gas emissions have caused the temperature on our planet to rise. That spike in global temperatures is fueling climate disasters that will only get worse unless we take action. Experts warn that we are running out of time to dramatically cut pollution to avoid climate catastrophe.

What is Earthjustice doing to help?

Americans across the political spectrum are feeling the urgency of our climate deadline and calling for action on a scale that matches the threat. We need bold and equitable climate solutions to move towards a pollution-free, 100% clean energy future.

Our attorneys use the law and partner with communities on the frontlines to tackle the climate crisis. Here are a few examples of the goals we’re working on and the progress we’ve achieved:

• Move beyond fossil fuels. Earthjustice has secured the retirement of coal plants generating more than 65,000 megawatts a year and stopped the buildout of more than 8,500 megawatts of methane gas. This work has prevented $16.9 billion a year in climate-related costs.
• Clear the way for clean energy. We level the playing field and ensure that utilities, regulators, and grid operators don’t discriminate against clean energy. We have driven more than 150 coal-fired power units into early retirement and are pushing state regulators to make a faster, more affordable transition to clean energy. We are also challenging the Trump administration’s false invocation of emergency powers to prop up costly, polluting fossil fuel plants and stick consumers with the bill.
• Electrify our economy. Transportation generates more greenhouse gas emissions than any other economic sector in the U.S. Advocacy by Earthjustice and our partners has pushed 10 states home to 100 million people to adopt a zero-emission trucks rule. California, which has the power to shape national industry standards, has also committed to electrifying locomotives and public buses. And at the federal level, we’ve helped secure billions in funding to electrify ports, school buses, and USPS mail trucks.
• Make sure everyone benefits by centering environmental justice and expanding access to clean energy in every community. We supported Puerto Rican advocates in securing $1 billion in federal funding to bring rooftop solar power to low- and moderate-income communities across the territory. This investment will help households keep the power on when hurricanes strike — and we’re fighting for additional funding so that everyone in Puerto Rico can have reliable, safe, and affordable energy.
• Take on the next frontiers. To name just a few efforts, we’re protecting climate forests, promoting climate-smart agriculture, stopping the petrochemical buildout, and challenging dirty hydrogen and carbon capture projects that prolong the use of fossil fuels.

This fight to preserve a livable planet touches everyone. Together, we can drive transformative change in service of the earth and justice for its people.

Learn more about how climate change is fueling extreme weather.