National Weather Service United States Department of Commerce
News Headlines

El Niño/La Niña Information


El Niño conditions have ended, and ENSO neutral conditions are expected to prevail during the upcoming cold season.


ENSO Diagnostic Discussion

This monthly summary is prepared by the experts at the Climate Prediction Center (CPC).

The discussion is also available in pdf and Word formats.


All About ENSO


  An Introduction to the El Niño/Southern Oscillation

The above link provides a basic overview of ENSO (El Niño/Southern Oscillation).  Various links to other summaries and tutorials are also provided.

 An Explanation of ENSO Indices

Descriptions of various ENSO indices are accompanied by an explanation of how the indices are used to detect/declare an El Niño or La Niña event.


El Niño and La Niña primarily affect the weather during the cold season.  What effects does the ENSO phase have on North Texas?  Click the Teleconnections link to find out!


Current Data


Sea Surface Temperatures

 El Niño Observations (from NOAA)

 Today's El Niño/La Niña Information (from PMEL-TAO)

 Latest El Niño Data (from PMEL-TAO)

 Current State of the Tropical Pacific (from CDC)






IRI/CPC Model ENSO Predictions



CPC/IRI Probabilistic ENSO Forecast



 CPC's El Niño Diagnostic Discussion

 CFS Model Forecasts (from CPC)

 Forecasts from the Tropical Atmosphere Ocean Project (TAO)

  Earth System Research Laboratory (ESRL) - El Niño Forecasts

 CDC Model Forecasts (technical)

 Summary of ENSO Model Forecasts (from IRI)




Quick Links


 NOAA El Niño Page

 NOAA El Niño Theme Page (PMEL-TAO)

 Climate Prediction Center (CPC) - El Niño/La Niña Home

 CPC's Weekly ENSO Update (available in pdf or ppt)

  Earth System Research Laboratory (ESRL) - ENSO Information

  International Research Institute for Climate and Society (IRI)