Yu Jia-yuh, head of Chinese Culture University's Atmospheric Sciences Department, avers that this is because this year there was a La Nina effect in the central Pacific: ocean water temperatures were low, which is not conducive to typhoon formation, so that this year most typhoons took shape in warmer waters east of the Philippines. Given the locations where they formed, the proportion to hit Taiwan consequently increased.
文化大學大氣系主任余嘉裕認為，這是因為今年在中太平洋已有「反聖嬰」現象逐漸成形，海溫偏冷，不利颱風生成，致使今年颱風多半在較暖海溫的菲律賓東方海面出現，相對位置接近我國，侵台機率也隨之增大。