Every report in this developing story, from the first to the latest.
Federal forecasters have upgraded the probability of a historically strong El Niño event peaking this winter, projecting Pacific Ocean temperatures could rise more than 2.5 degrees Celsius above average.
The National Oceanic and Atmospheric Administration has officially recorded sea surface temperature anomalies exceeding 2°C in the equatorial Pacific, cementing the current El Niño as a 'super' event.
The current El Niño has reached a sea surface temperature anomaly of 3.05°C, breaking the previous 2015 record.