A powerful force is tearing Bertha apart. It’s a hallmark of El Niño

A powerful force is tearing Bertha: El Niño's Influence Shapes Atlantic Hurricane Season as Bertha Faces Powerful Wind Shear Cybersecarmor.com – As

El Niño’s Influence Shapes Atlantic Hurricane Season as Bertha Faces Powerful Wind Shear

Cybersecarmor.com – As Tropical Storm Bertha continues its journey along the Gulf Coast on July 22, 2026, a formidable atmospheric force is actively dismantling the weather system. Upper-level winds are ripping through the storm, maintaining it at a considerably weaker intensity than it might otherwise achieve under different conditions.

These upper-level winds, scientifically termed wind shear, may signal what awaits the remainder of the 2026 Atlantic hurricane season. This particular season is anticipated to experience substantial influence from a powerful El Niño phenomenon, which has historically altered storm development patterns across the Atlantic basin.

Understanding Wind Shear and El Niño

Wind shear represents one of the most significant markers of El Niño conditions, according to Michael Lowry, a Miami-based hurricane specialist who broadcasts with WPLG-TV. Speaking with CNN, Lowry explained that this atmospheric pattern serves as “the number one calling card of El Niño.”

El Niño’s most visible impact on hurricane activity involves elevating vertical wind shear. This scissor-like wind pattern effectively removes the tops of developing storm systems before they can mature into powerful hurricanes. The shearing action disrupts the vertical structure that tropical cyclones require for organization and intensification.

However, meteorologists note that the specific winds currently affecting Bertha over the Gulf of Mexico have not been directly connected to El Niño conditions. Several pieces of evidence suggest this particular weather pattern may operate independently from the Pacific warming phenomenon.

Regional Variations in El Niño’s Impact

El Niño typically exerts its strongest influence on winds across the Caribbean Sea and the tropical Atlantic Ocean, rather than the Gulf of Mexico region. This geographical distinction helps explain why Bertha’s situation differs from broader Atlantic patterns.

“I think it’s a bit difficult to tie in the stronger shear that Bertha is currently experiencing to El Niño,” said Colorado State University hurricane researcher Phil Klotzbach in an email to USA TODAY. “That’s because El Niño tends to have its strongest shear impacts at lower latitudes (for example, the Caribbean or the tropical Atlantic).

“The driver of the strong shear that Bertha is currently experiencing is high pressure in the Midwest,” he continued. “The circulation around that high-pressure system is causing strong northeasterly shear over Bertha.”

Wind shear, as defined by CNN meteorologist Mary Gilbert in an online report, encompasses changes in wind direction or speed between different atmospheric levels. This variation can either tear apart existing tropical systems or prevent new formations from developing entirely.

“It can tear apart tropical systems or prevent them from forming in the first place — and it’s established a firm grip over the Caribbean Sea and the western Atlantic Ocean,” Gilbert noted earlier this week. “June and July are typically the quietest months of the season, but this shear has been a major roadblock and could have implications for the peak months, too,” she added.

How El Niño Alters Global Atmospheric Circulation

The mechanism behind El Niño’s influence on Atlantic wind patterns begins with natural warming of tropical Pacific sea water. According to the National Oceanic and Atmospheric Administration (NOAA), this Pacific warming alters global atmospheric circulation patterns. These modifications strengthen upper-level winds across the Caribbean and tropical Atlantic regions, consequently increasing wind shear throughout those areas.

NOAA emphasizes that hurricanes develop most effectively when the atmosphere remains relatively calm from surface levels through the upper atmosphere. Strong wind shear tilts developing storms, disrupts their core structure, and interferes with the upward transport of heat and moisture that powers tropical storms and hurricanes.

Consequently, when El Niño generates wind shear, developing tropical disturbances face increased likelihood of weakening, failing to organize properly, or struggling to intensify into major hurricane status, according to NOAA reports.

Accelerated El Niño Effects in 2026

Typically, the connection between eastern Pacific ocean warming and atmospheric changes requires time to fully develop. The ocean phenomenon defining El Niño must link with the atmosphere and modify global circulation patterns before ultimately reshaping winds across the tropical Atlantic, Lowry explained.

“This year, however, it appears we’re seeing that atmospheric feedback to the strengthening El Niño earlier than usual, which could be a result of the record-setting pace of the warming so far in the eastern equatorial Pacific,” Lowry said in an e-mail to USA TODAY.

The wind shear increase reaches its peak intensity in the western portion of the tropical Atlantic, particularly across Caribbean waters. This regional pattern also contributes to reducing the frequency of U.S. hurricane landfalls during El Niño years.

Forecasts for the 2026 Atlantic hurricane season predominantly predicted below-normal activity due to El Niño’s storm-suppressing effects. Colorado State University, in a recent forecast projection, estimated only nine named storms would form—significantly below the historical average of fourteen storms.

Klotzbach further noted that predicted ongoing strong wind shear across the Caribbean and Atlantic should continue suppressing hurricane development. “Vertical wind shear is currently running even higher than we typically see in below-average Atlantic hurricane seasons,” he observed, emphasizing the exceptional nature of current conditions under the strong El Niño currently underway.