The Climate Prediction Center defines El Niño conditions as existing when a one-month positive sea surface temperature anomaly of 0.5C or greater is observed in the Niño-3.4 region of the equatorial Pacific Ocean, an expectation that the 3-month Oceanic Niño Index (ONI) threshold will be met (see graphs below), and an atmospheric response typically associated with El Niño is observed over the equatorial Pacific Ocean. Please visit the Climate Prediction Center website for El Niño status and predictions.
Monthly summaries of recent climate conditions provided by Southwest Fisheries Science Center. Please contact Jerrold Norton for more information.| Sep 2018 | Oct 2018 | Nov 2018 | Dec 2018 | Jan 2019 | Feb 2019 | Mar 2019 | Apr 2019 | May 2019 | Jun 2019 | Jul 2019 | Aug 2019 | Sep 2019 | Oct 2019 |
The NOAA 1/4° daily Optimum Interpolation Sea Surface Temperature data (https://www.ncdc.noaa.gov/oisst).