Thursday, NOAA’s Climate Prediction Center (CPC) sounded the death knell for the 2016-17 La Nia. SSTs in the benchmark Nio 3.4 region (in the equatorial Pacific) warmed to 0.3°C below average during early February; SSTs of 0.5°C or more below average in this region are required to be classified as weak La Nia conditions.
http://robinwestenra.blogspot.com/2017/02/farewell-to-la-nina-hello-el-nino.html