ENSO is a complicated thing to model. What are the challenges, and how can we overcome them?
El Nino conditions strengthened in March. Where do forecasters think we're going from here?
You're not the only one wondering if we will see El Niño grow or continue into this coming winter 2015. How useful are March winds and subsurface temperatures across the tropical Pacific Ocean in predicting winter El Niño or La Niña states?
How do we verify forecasts that use probabilities? Read on to find out.
The model predictions during 2014 were not that shabby. A major, strong El Niño was not well justified by the predictions.
For more than 6 months, NOAA has been issuing El Niño watches, but never an advisory. Here we show whether recent patterns in precipitation resemble those expected during El Niño.
At the beginning of February, the atmosphere was looking a little bit like El Niño. Is this just another rolling stone?
ENSO blogger Tony Barnston explains why climate forecasters can't get by with just a single indicator for predicting El Niño and La Niña.
The tropical Pacific Ocean sloshes around like water in your bathtub. These waves are as important as the vortex of water that spirals down the drain.
Blogger Tom Di Liberto explains the math behind some of the tests that seasonal forecasters use to check forecast skill, and then shows how skillful the past decade's winter forecasts have been.