Hong Kong should prepare for stronger storms and a warmer, wetter winter this year as the current El Nino phenomenon is likely to intensify into a super event, a local green group and a leading meteorologist have said. Typhoons heading for Hong Kong this year were set to grow more powerful, as El Nino raised sea temperatures and provided storms with more moisture and energy, Friends of the Earth (HK) said on Monday. The forecast, which is based on international and local data, came after the...