June Climate Briefing: El Niño Still Finalizing its Summer Plans
Read our ENSO Essentials & Impacts pages for more about El Niño and La Niña.
Tony Barnston provides his last overview of the briefing:
See below for tweets summarizing the current El Niño situation.
To predict ENSO conditions, computers model the SSTs in the Niño3.4 region over the next several months. The plume graph below shows the outputs of these models, some of which use equations based on our physical understanding of the system (called dynamical models), and some of which use statistics, based on the long record of historical observations.
The probability for El Niño conditions to continue is above 50% for the remainder of the year. The El Niño odds are somewhat lower in the official probabilistic forecast issued by CPC and IRI in early June than in this mid-month CPC/IRI forecast. This early-June forecast uses human judgement in addition to model output, while the mid-month forecast relies solely on model output. More on the difference between these forecasts in this IRI Medium post.
ENSO in context: Resource page on climate variability
IRI’s Global Seasonal Forecasts
Each month, IRI issues seasonal climate forecasts for the entire globe. These forecasts take into account the latest model outputs and indicate which areas are more likely to see above- or below-normal temperatures and precipitation.
All forecast maps, including temperature in addition to precipitation, and also including a description of the methodologies, are available on our seasonal forecast page. Additional forecast formats, such as our flexible forecast maproom, are available in the IRI Data Library.