El Niño Officially Forms, Expected to Be Strong

El Niño has officially formed in the Pacific Ocean, with forecasts indicating an 88% chance it will become strong or very strong by late fall. According to NOAA's announcement, there is a 63% chance that El Niño will intensify significantly this late fall and early winter, ranking among the largest events since records began in 1950.

The warm waters associated with El Niño are expected to affect weather patterns globally, potentially leading to extreme weather events such as heat waves, floods, droughts, tornadoes, and wildfires. The pattern's effects vary by region: it often dampens Atlantic hurricane season activity but increases it in the Pacific.

Experts warn that El Niño could have significant economic impacts due to temperature increases. Several climate scientists forecast that 2027 will be the hottest year on record because of lagging effects from this El Niño, which is expected to peak in fall or winter. The weather extremes caused by an El Niño also depend on when it develops.

While intense El Niño conditions could hurt harvests in much of the world, the climate phenomenon is likely to boost agricultural production in Argentina in the second half of 2026. According to climate specialists, the warm ocean waters associated with El Niño are expected to increase the frequency and intensity of rainfall in Argentina, which generally favors crop development.

In Minnesota, a strong El Niño could deepen drought conditions due to warmer-than-average temperatures and slightly drier than normal seasons. The last strong El Niño winter season was between 2023 and 2024, often referred to as the 'Lost Winter,' dominated by bare ground and title holder of the warmest winter on record for the state.

California may face several significant impacts due to the strong El Niño event expected this year. There's a 63% chance it could be “very strong” toward the end of the year, with an 88% chance it will be either “very strong” or “strong.” The phenomenon is likely to bring more rain to Southern California and potentially cause high-tide flooding due to elevated sea levels.

Australia's Bureau of Meteorology has confirmed El Niño is underway, signaling a 'strong to very strong' climatic pattern. One clear indicator is the significant drop in air pressure across the Pacific, measured by the Southern Oscillation Index at around -23.3, well beyond the El Niño benchmark of -7. Ocean temperatures in the central Pacific are rising rapidly, not seen since 1943.

The Bureau forecasts drier and hotter conditions for parts of Australia, particularly in winter and spring 2026, with less rainfall in the south and east, and higher temperatures across most areas except parts of the north. Climate experts warn that El Niño is linked to heatwaves, droughts, and increased bushfire risks later in the year as conditions dry out.

The Bureau notes that past patterns may not reliably predict future outcomes due to climate change. Each El Niño event varies, with different impacts on rainfall and temperatures. For example, winter-to-spring rainfall in 2002 differed significantly from 2015. The confirmation comes amid warnings of extreme weather later this year, potentially reaching 'Godzilla' scale.

Physicist Dr Gail Isles warns that El Niño could bring drier winds to Australia, increasing bushfire risks by drying out foliage and creating tinderbox conditions. Additionally, the Independent Commodity Intelligence Services (ICIS) predicts global gas shortages due to increased energy demand in Asia and Europe as El Niño triggers extreme weather events.