New study reveals growing risk for mid-latitude regions
A new study led by Yale University warns that hurricanes and typhoons could expand into mid-latitude regions during the 21st century, potentially impacting major cities such as New York, Boston, Beijing, and Tokyo.
Published in Nature Geoscience, the research suggests that as the planet continues to warm due to human-driven greenhouse gas emissions, tropical cyclones may shift both northward and southward beyond their traditional zones.
Recent unusual events, such as Subtropical Storm Alpha making landfall in Portugal and Hurricane Henri reaching Connecticut, may already signal the beginning of this trend.
Climate change could reshape storm patterns
According to the study, future tropical cyclones may occur across a broader range of latitudes than at any point in the past three million years.
Researchers highlight that warming temperatures are reducing the difference between the Equator and the poles, a change that could weaken or alter the jet stream.
This shift may allow storms to form and intensify in regions that historically have been less exposed to such extreme weather.
“This represents an important, under-estimated risk of climate change,” said lead author Joshua Studholme, a physicist at Yale and contributor to the United Nations climate assessment.
Stronger storms and new threat zones
While scientists still debate whether the total number of tropical cyclones will increase, there is strong evidence that storm intensity is already rising.
Experts warn that even if the number of storms remains stable, their expansion into more densely populated mid-latitude regions could significantly increase global risk.
“This implies higher risks due to tropical cyclones in Earth’s warming climate,” said co-author Alexey Fedorov.
Why hurricanes may move beyond the tropics
Typically, tropical cyclones form over warm ocean waters near the Equator, where atmospheric conditions allow them to develop without interference from strong wind shear.
However, as global temperatures rise, these conditions may extend further toward higher latitudes.
During warmer periods in Earth’s history, such as the Eocene and Pliocene epochs, similar patterns were observed, with storms forming at higher latitudes.
Researchers believe that weakening jet streams and shifts in large-scale atmospheric circulation, such as the Hadley cells, may open new pathways for storm development.
Uncertainty remains, but risks are increasing
Despite advances in climate science, predicting the future behavior of hurricanes remains complex.
Current climate models lack the resolution needed to fully simulate tropical cyclones, forcing scientists to rely on indirect methods that sometimes produce conflicting results.
However, multiple lines of evidence now point toward a future where powerful storms could affect regions previously considered relatively safe.
The study highlights the urgent need for improved forecasting models and increased preparedness, as climate change continues to reshape global weather patterns.
