![Map showing sea surface temperatre in Pacific Feb 2015](/sites/default/files/styles/900x/public/sosstsst_H_global_1m_20150228_anom_slider_6.jpg?itok=hZw3Uwb4)
El Niño set to strengthen but longer-term trend uncertain
Weak El Niño conditions observed since October 2014 are expected to strengthen over the next few months and may turn into a substantial event, but there is a great deal of uncertainty beyond June 2015, current forecasts suggest.