Reuters: Japan's weather bureau said on Friday there was a high possibility that a La Nina weather pattern would emerge during the country's summer, which runs from around June to August, and continue through autumn. The Japan Meteorological Agency also said the El Nino, which had emerged in summer 2014, has ended. El Nino - a warming of sea-surface temperatures in the Pacific - can trigger drought in Southeast Asia and Australia and floods in South America, hitting production of key foods such as rice,...