Hurricane Erin has regained strength, returning to a Category 4 storm over the weekend.
The recent hurricane activity has led to the formation of one of the most rapidly intensifying Atlantic hurricanes on record, suggesting that climate change is elevating the threat of quickly strengthening storms.
Erin was the first hurricane of this Atlantic season, rapidly escalating from a Category 1 to a Category 5 storm in just over 24 hours. Even after fluctuations in intensity, Erin’s transformation back to a Category 4 storm is among the five fastest transitions from Category 1 to Category 5.
The hurricane is anticipated to grow stronger on Monday as it moves east of the Bahamas. For more information, refer to the National Hurricane Center’s latest advisory. Heavy rainfall is expected in Hispaniola on Monday, as well as in parts of the Turks and Caicos, and the southeastern and central Bahamas until Tuesday.
However, experts are focusing closely on the phenomenon of the storm’s “rapid strengthening.”
The National Hurricane Center defines rapid strengthening as an increase in sustained wind speed of at least 35 mph within 24 hours.
In Erin’s case, its maximum sustained wind speed surged by approximately 75 mph over a 24-hour period from Friday morning to Saturday.
Climate change is heightening the risk of rapidly intensifying storms, primarily due to elevated sea surface temperatures and increased moisture in the atmosphere.
As Erin approaches the Bahamas on Monday, it is expected to further intensify in the warm waters that are above 80 degrees Fahrenheit. A warmer atmosphere caused by global warming is capable of holding more moisture, allowing the storm to gain strength and enhance rainfall.
Research published in 2023 in the Journal Scientific Reports indicates that the likelihood of rapid intensification for tropical cyclones in the Atlantic has increased by about 29% from 2001 to 2020 compared to the 1971 to 1990 period.
Rapid intensification has been well-documented in recent years, with Hurricane Dorian reaching peak winds of 150 mph to 185 mph in just nine hours in 2019. Additionally, Hurricane Ian experienced rapid strengthening before making landfall in Florida in 2022.
Last year, Hurricane Milton’s sustained wind speed astonishingly rose by 90 mph over approximately 25 hours. Other notable instances of rapid strengthening include Hurricanes Harvey (2017), Laura (2020), Ida (2021), and Ian (2023).
Despite these observations, predicting rapid intensification remains a challenge. Scientists understand that warm sea surface temperatures, high humidity, and favorable atmospheric conditions play crucial roles, but further research is essential to comprehend the specific mechanics at play in individual storms.
In the coming days, the National Hurricane Center indicated that Erin will track between Bermuda and the US East Coast.
While the storms are not forecasted to make direct landfall, they can still generate dangerous surf, strong currents, and other hazardous conditions affecting the Bahamas, Bermuda, the US East Coast, and Canada’s Atlantic region.
Source: www.nbcnews.com
