America could be facing hurricane hell later this year with changes in ocean temperatures threatening a spate of deadly storms. As the super El-Nino which set in last year wanes, sea waters will cool, possibly triggering a more active hurricane season, experts warn. A rapid drop in temperatures would see El Nino, the result of ocean warming near South America, pendulum swing into La Nina. Meaning ‘little girl’, La Nina is the opposite of El Nino and builds cooler waters off the South American coast. However, it is linked to unstable atmospheric conditions in the United States with fears it cou…