A rare combination of two major ocean climate patterns—the Atlantic Niña and a strengthening Super El Niño—is drawing attention from meteorologists this year. The Atlantic Niña, a cooling event in the tropical Atlantic, is coinciding with an exceptionally strong El Niño in the Pacific, potentially creating atmospheric conditions that suppress hurricane formation in the Atlantic. Experts suggest this pairing may reduce the risk of hurricanes making landfall in the United States, though they caution that a quieter season does not eliminate the possibility of dangerous storms.
How These Patterns Affect Hurricanes
The Atlantic Niña is characterized by cooler sea-surface temperatures in the equatorial Atlantic, which can alter wind and rainfall patterns. When combined with the Super El Niño—a very intense warming event in the Pacific—these patterns may create higher atmospheric pressure, more sinking air, and drier conditions in the middle levels of the atmosphere. These factors suppress thunderstorm formation and reduce the moisture tropical systems need to intensify.
Why the Risk is Lower, But Not Gone
While the atmospheric conditions created by these climate patterns may lower the overall risk of hurricanes, experts emphasize that the season could still produce damaging storms. Historical data shows that even during El Niño-suppressed seasons, outliers can cause significant destruction. The current cooling in the Atlantic is rare, with strong summer Atlantic Niña events occurring only six times in over 40 years of historical data.
Could This Influence Winter Weather Too?
Scientists are monitoring these climate patterns closely, as they may also impact winter weather. The Super El Niño has historically been associated with major disruptions to global weather, including increased flooding in some regions and drought in others. The interplay between the Atlantic Niña and Super El Niño could further influence weather patterns beyond the hurricane season.