Scientists Warn of Potential Super El Niño in Pacific

Climate scientists and agencies, including the Copernicus Climate Change Service, are monitoring a potentially "super El Niño" developing in the Pacific Ocean [1, 2].

This phenomenon is significant because the convergence of natural cycles and human-driven warming may amplify sea-surface temperatures beyond typical thresholds. Such a shift often triggers extreme weather events worldwide, ranging from severe droughts to catastrophic flooding [2, 3].

To be classified as a "super" El Niño, sea-surface temperatures in the central and eastern Pacific must exceed 2 °C above normal ^[2]. Current data suggests the event is gaining momentum, with 75% of climate models predicting a 2.5 °C warming associated with the upcoming cycle ^[1].

Forecasters said they are confident that a very strong El Niño could form later this year ^[1]. While some analysts suggest it is too early to forecast a super event with absolute certainty, they said preparation is necessary given the projected intensity ^[3].

The impacts of such an event vary by region. In the U.S., an El Niño could result in a rainier Southwest and warmer winters in the North ^[3]. Additionally, this pattern typically leads to reduced hurricane activity in the Atlantic ^[3]. However, other regions may face opposite extremes, as the phenomenon can drive flooding on one continent while causing drought on another ^[4].

The strongest phase of this warming is expected to occur during the coming months of 2026 [1, 2]. Scientists continue to monitor the Pacific to determine if the temperature anomalies will sustain the thresholds required for a record-breaking classification ^[1].