As Hurricane Melissa roars through the Caribbean, the devastating impact of this powerful storm has become a stark reminder of the growing influence of climate change. A recent study highlights how human activities have significantly amplified the storm’s intensity, making such extreme weather events increasingly common.
This week, Hurricane Melissa, fueled by warm ocean waters, became one of the strongest storms ever recorded in the Atlantic. After colliding with Jamaica, the storm left a trail of destruction in Haiti and Cuba. Initially a Category 5, the hurricane has weakened to Category 2 as it approaches Bermuda, with landfall anticipated on Thursday, as reported by the National Hurricane Center.
Reports from western Jamaica reveal catastrophic damage, with winds reaching 185 miles per hour flattening neighborhoods and destroying large areas of farmland. Over 25,000 residents and tourists sought refuge in shelters. The attribution study from Imperial College London suggests that climate change increased Melissa’s wind speeds by 7%, leading to a 12% rise in the resultant damages.
Economic losses from the storm could total tens of billions of dollars, according to experts.
Similar reports have emerged, indicating that global warming has escalated the probability and severity of Hurricane Melissa. This aligns with growing research suggesting that climate change is creating conditions for stronger tropical storms.
“Hurricane Melissa is kind of a textbook example of what we expect in terms of how hurricanes respond to a warming climate,” commented Brian Soden, a University of Miami atmospheric sciences professor not involved in the study. “We know that the warming ocean temperatures are being driven almost exclusively by increasing greenhouse gases.”
The devastation has impacted all aspects of life across the Caribbean.
“There’s been massive dislocation of services. We have people living in shelters across the country,” stated Dennis Zulu, United Nations resident coordinator in Jamaica, during a press conference. “What we are seeing in preliminary assessments is a country that’s been devastated to levels never seen before.”
The Climate Connection
The rapid attribution study utilized the IRIS model from Imperial College, analyzing millions of synthetic tropical cyclone tracks. This model compared the likelihood of such storms in pre-industrial times versus today, revealing that human-induced warming increased Hurricane Melissa’s wind speeds by 7%.
In the cooler pre-industrial climate, a storm of this magnitude would have been a once-in-8,000-years event in Jamaica. Now, with a 2.3-degree Fahrenheit rise in temperatures, such an event is expected once every 1,700 years, the study found.
The model also estimated that climate change is responsible for 12% of the economic damage during a storm like Melissa, compared to pre-industrial times.
Damages and economic losses across the Caribbean could reach $52 billion, according to AccuWeather. For Jamaica, with a GDP of around $20 billion, the impact could have long-lasting economic repercussions, noted study co-author Ralf Toumi from Imperial College London.
“If any of these numbers come anywhere near the truth, it’s going to be extremely difficult for them to deal with,” Toumi remarked. “I hope those numbers are wrong.”
As more rapid climate attribution studies emerge, they help to clarify the role of climate change in extreme weather events, reducing misinformation. Soden emphasized the importance of quantitative analysis to convey climate impacts effectively.
“I’m glad to see groups doing more of this kind of work,” Soden said. “Rather than me saying, ‘Yeah, these things are kind of qualitatively consistent with what we expect in a warming climate,’ they can put numbers on it. … That, I think, carries more weight with the general public, scientists and policymakers.”
A Turbocharged Storm
Hurricane Melissa has set records as it blazed a destructive path through the Caribbean. It’s the strongest storm to ever make landfall in Jamaica and the most intense storm recorded this late in the Atlantic hurricane season.
In the days leading up to landfall, the storm underwent two rapid intensifications, a process where wind speeds increase by at least 35 miles per hour in 24 hours. This phenomenon can occur due to warm waters, low wind shear, and high atmospheric moisture.
Earlier, Hurricane Melissa gathered strength over unusually warm waters in the central Caribbean. The water temperatures were 2.5 degrees Fahrenheit above average, conditions made up to 700 times more probable by human-induced climate change, as per Climate Central’s analysis.
Uniquely, the warmth extended deep below the ocean surface, providing substantial energy for the hurricane, explained Brian Tang, an atmospheric science professor at the University at Albany.
The complexities of forecasting storm paths, like Melissa’s, are generally well-handled by NOAA and similar organizations. However, predicting rapid intensification remains challenging, with research indicating that climate change might be making such conditions more likely.
“From a science perspective, it’s amazing to see such a strong storm in the Atlantic,” Tang noted, emphasizing that such intensity is usually seen in Asian waters prone to typhoons. Warm waters “the energy for the storms, so that certainly helped turbocharge and accelerate that process so it was not only a rapid intensification, it was an extreme version of a rapid intensification.”
Though Jamaica bore the brunt, with extensive preparations in place, Cuba experienced home collapses and widespread flooding. Haiti reported the highest casualties, with at least 25 fatalities attributed to the storm.
The U.S. is dispatching disaster response teams to affected Caribbean nations, according to the State Department. Concerns have arisen over the Trump administration’s cuts to disaster relief agencies, which may hinder recovery efforts. The U.S. Agency for International Development, previously crucial in coordinating such efforts, was dismantled and officially merged with the State Department earlier this year.
“It was not only a rapid intensification, it was an extreme version of a rapid intensification.”
— Brian Tang, University at Albany
Dana Sacchetti from the World Food Programme’s Jamaica office told NPR that U.S. government funding had been secured earlier in the year, aiding in the provision of food assistance. However, further support from donors and governments is needed.
The New York Times reported that due to a government shutdown, NOAA’s “Hurricane Hunter” missions operated with smaller crews, though volunteers stepped in to assist. Tang noted the dedication of NOAA employees, which ensured forecast accuracy, but he expressed concerns about the long-term impact of limited federal resources on U.S. hurricane forecasting.
Federal employees are “under a lot of stress and I worry, how long are they going to be able to keep up?” Tang stated. “While this season I don’t think we’ve seen any lapse … in the services they provide, I do worry going forward. Whenever a system is stressed like that, there’s a greater risk for a failure to occur, particularly if things get really busy.”
Original Story at insideclimatenews.org