Daily Mail: A spike in Pacific Ocean sea temperatures and the rapid movement of warm water eastwards have increased fears that this year's El Nio could be one of the strongest yet.
El Nio - a warming of sea-surface temperatures in the Pacific - affects wind patterns and can trigger both floods and drought in different parts of the globe.
Although previous research has suggested extreme El Nio events could occur later this year, experts claim this recent rise hints they are likely to be more significant...