Ocean temperature changes predicted to start this during spring could ‘significantly’ increase the risk of severe weather in the US. Meteorologists have in the past week confirmed a La Nina transition from El Nino is almost certain from next month. An unusually powerful El-Nino warming of ocean waters around South America, which set in last year, is expected to end next month. The US Climate Prediction Centre has issued an ‘El Nino Advisory’ and ‘La Nina Watch’ stating a transition to La Nina is possible before August. This could increase the risk of storms during summer and a more active autu…