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Hurricane Beryl’s rapid intensification was alarming: Here’s why more tropical storms are exploding in strength

Brian Tang, University at Albany, State University of New York, The Conversation on

Published in Science & Technology News

In addition to the high ocean heat content, research has shown other environmental factors need to typically align for rapid intensification to occur. These include:

Low vertical wind shear, where the winds steering the hurricane do not change much in strength or direction over the depth of the storm. Strong wind shear makes it difficult for a storm to stay organized and maintain its strength.

A moist atmosphere surrounding the storm, with heavy precipitation encircling the developing eye.

My research has shown that when this combination of factors is present, a hurricane can more efficiently take advantage of the energy it gathers from the ocean to power its winds, versus having to fight off drier, cooler air being injected from around the storm. The process is called ventilation.

Simultaneously, there is an increase in air being drawn inward toward the center, which quickly increases the strength of the vortex, similar to how a figure skater pulls their arms inward to gain spin. Rapid intensification is akin to a figure skater pulling in both their arms quickly and close to their body.

As oceans warm and ocean heat content gets higher with climate change, it is reasonable to hypothesize that rapid intensification might be becoming more common. Evidence does suggest that rapid intensification of storms has become more common in the Atlantic.

Additionally, the peak intensification rates of hurricanes have increased by an average of 25% to 30% when comparing hurricane data between 1971–1990 and 2001–2020. That has resulted in more rapid intensification events like Beryl.

 

This increase in rapid intensification is due to those environmental factors – warm waters, low vertical wind shear and a moist atmosphere – aligning more frequently and giving hurricanes more opportunity to rapidly intensify.

The good news for anyone living in a region prone to hurricanes is that hurricane prediction models are getting better at forecasting rapid intensification in advance, so they can give residents and emergency managers more of a heads-up on potential threats. NOAA’s newest hurricane model, the Hurricane Analysis and Forecast System, shows promise to further improve hurricane forecasts, and artificial intelligence could provide more tools to predict rapid intensification.

This article is republished from The Conversation, a nonprofit, independent news organization bringing you facts and trustworthy analysis to help you make sense of our complex world. It was written by: Brian Tang, University at Albany, State University of New York

Read more:
Hurricane forecast points to a dangerous 2024 Atlantic season, with La Niña and a persistently warm ocean teaming up to power fierce storms

We’re decoding ancient hurricanes’ traces on the sea floor – and evidence from millennia of Atlantic storms is not good news for the coast

La Niña is coming, raising the chances of a dangerous Atlantic hurricane season – an atmospheric scientist explains this climate phenomenon

Brian Tang receives funding from the National Science Foundation, the Office of Naval Research, and the National Aeronautics and Space Administration.


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