Weather information indicates that the region was affected by a broad rain band with vigorous convective activities at that time . it is estimated that the height of the clouds associated with the thunderstorms reached 45000 feet ( 15000 meters ) 天气资料显示，当时该区正受到一度广?雨带影响，而且对流活动强烈，云带顶部高度估计达到45000尺（ 15000米） 。
