El Niño, the periodic warming of the central and eastern Pacific Ocean, has entered a particularly strong phase that is already reshaping weather patterns around the globe. While the phenomenon is a natural part of the climate system, its current intensity is amplifying extremes—from raging wildfires in Southeast Asia to an unusually busy hurricane season in the Pacific.
Dryness and fire in Indonesia
Indonesia’s 2024 wildfire season illustrates how El Niño can turn a normal dry spell into a disaster. Since January, more than 895,657 hectares—roughly six times the size of Greater London—have burned, a figure that is double the area burned the previous year when El Niño was not a factor. The smoke has forced school closures and driven a surge in hospital admissions, with around 175,000 people experiencing respiratory illnesses, including over 40,000 toddlers suffering from coughs, bronchitis or pneumonia. The combination of hotter, drier air and weakened atmospheric winds creates conditions that allow fires to spread rapidly and resist suppression.
Storms that grow stronger
In the eastern Pacific, El Niño is providing the “ingredients” for more powerful tropical cyclones. To date, the season has produced 22 named storms and 12 hurricanes, including 10 major hurricanes—well above the average for an entire season. Warmer ocean waters and reduced upper‑level wind shear enable storms to intensify quickly; one hurricane recorded wind gusts of 180 mph (285 km/h). The simultaneous presence of three hurricanes—Lowell, Karina and Marie—marks the first such triple in the central and eastern Pacific since 2015, underscoring how El Niño can fuel rapid storm development.
Conversely, in the North Atlantic, El Niño tends to increase wind shear, which can tear apart developing storms. This season, only a single hurricane, Isaias, made landfall in the Florida Panhandle and Alabama, reflecting the suppressive influence of heightened shear on Atlantic cyclogenesis.
Monsoon disruption in India
El Niño’s reach extends to South Asia, where the Indian monsoon has been unusually weak. Rainfall across the country is 13 % below average, with eastern and north‑eastern regions experiencing a 26 % deficit—classified as an “exceptional” drought. Southern states are also about 24 % drier than normal. Even where totals appear near average, the rainfall pattern has become erratic, alternating between prolonged dry spells and intense downpours. While the Indian Meteorological Department still labels the season as “normal,” scientists caution that El Niño is a key driver of the observed variability, though other regional patterns also play a role.
Typhoons and floods in East Asia
In the western Pacific, El Niño is shifting storm tracks eastward, keeping cyclones farther from Japan and eastern China during formation. This longer journey over warm waters allows storms to accumulate more energy, resulting in a record‑high 10 tropical cyclones forming this season—the most since 1966. Recent systems such as Maysak and Dujuan have already caused widespread flooding and landslides in China and Japan, highlighting the dual threat of intensified storms and the heavy rains they bring.
What the future may hold
The World Meteorological Agency projects that this record‑breaking El Niño will persist until at least 2027, suggesting that the current wave of extreme weather could continue or even intensify. Regions already feeling the strain—Indonesia, the United States, India, and parts of East Asia—may face compounded challenges as the phenomenon interacts with other climate drivers.
Uncertainty and the need for vigilance
While the link between El Niño and the highlighted weather events is clear, scientists note that many regions experience overlapping influences from other climate patterns, such as the Indian Ocean Dipole or the Madden‑Julian Oscillation. Consequently, attributing every extreme event solely to El Niño would oversimplify a complex system. Ongoing monitoring and flexible preparedness plans remain essential, especially as the phenomenon’s projected longevity raises the stakes for disaster response and mitigation.
In short, El Niño is acting as a catalyst for a range of weather extremes—from drought‑driven fires to hyper‑active hurricane seasons—underscoring the interconnected nature of our planet’s climate system and the importance of coordinated global observation.