Developing El Niño becomes strongest on record

Scientists monitoring Pacific Ocean temperatures have announced that the developing El Niño climate phenomenon has officially become the strongest on record. Daily sea surface temperatures in a critical region of the central-eastern Pacific reached 3.05 degrees Celsius above average on 19 September, surpassing the previous record of 3.02 degrees Celsius set during the exceptionally strong El Niño event in 2015.

Although certain longer-term metrics of El Niño have not yet reached record thresholds, that trajectory is expected to shift as the phenomenon's peak is not anticipated until later this year. El Niño is a naturally occurring cycle recurring every two to seven years and lasting roughly a year, where trade winds typically blowing east-to-west weaken or reverse, allowing warm water to spread eastward and release heat into the atmosphere to alter global weather.

Professor Adam Scaife, Head of Long Range Prediction at the Met Office, emphasized the sheer magnitude of the ongoing event by stating:

"We have been signalling for months that the developing El Niño will be an unprecedented event. The fact that it has already exceeded previous records – with several weeks to go before it peaks later this year – shows the enormity of this El Niño."

Professor Adam Scaife

While every El Niño behaves differently and record-shattering strength does not automatically guarantee proportional weather impacts, expected disruptions are already being observed worldwide. Elevated risks of storms and flooding accompany heightened threats of drought and wildfires across vulnerable regions, with Indonesia's health ministry noting that El Niño-fuelled wildfires have already impacted roughly 12.5 million people across the country.