two maps of tropical Pacific ocean temperature anomalies. Top shows typical El Niño pattern and bottom shows typical La Niña patter
May 27, 2021

One La Niña winter is often followed by another. El Niño winters seldom double-dip. The ENSO Blog explains why.

February 25, 2021

La Niña has been going strong this winter, but the Northern Hemisphere doesn't appear to be paying attention. Our blogger discusses what may be going on.

May 28, 2020

NOAA scientists are using advances in global climate modeling to improve our ability to make seasonal predictions of Atlantic hurricane activity.

Map of the indian ocean showing  cold temperatures in the eastern basin and warm temperatures in the western basin
February 27, 2020

There’s more than just ENSO in the tropical climate neighborhood.  Our blogger discusses an Indian Ocean climate pattern that had an important impact on Australia’s catastrophic 2019 bushfire season.

August 8, 2019

El Niño has ended, bringing a transition to ENSO-neutral conditions. How long can we expect neutral conditions to last?

May 30, 2019

The major El Niño of 2015-16 affected disease occurrence throughout the globe.  Our blogger discusses new efforts to use ENSO forecasts to issue early warning alerts for global disease outbreaks. 

February 28, 2019

Why did atmospheric El Niño conditions fail to develop this past fall?  Our blogger tries to unravel the mystery of the missing central Pacific rainfall. 

July 3, 2018

The NOAA Climate Prediction Center began issuing Week 3-4 Temperature and Precipitation Outlooks in May of 2017.  Our blogger discusses the challenges and successes that led to this development. 

February 1, 2018

Dry conditions have dominated large portions of the United States so far this winter.  Is the current double-dip La Niña to blame? 

SST anomalies in June 2017 (rotator)
July 13, 2017

Our newest ENSO blogger provides the latest scoop on what is going on with ENSO.