Met Office predicts 'unprecedented' sea surface temperature rise of 3C (5.4F) plus will heighten extreme weather risks.

El Niño is declared when sea temperatures in the tropical eastern Pacific rise 0.5C above the long-term average, impacting global rainfall patterns and temperatures.

After a summer of heatwaves and drought across the UK Brits could be battered by storms and rain due to an 'unprecedented' El Nino event - as the notorious weather event plays a…

The weather event is predicted to be the largest since the 1800s