AgI-seeding should be done before the activation of most ice nuclei start, so as to enhance rainfall through increasing ice crystals content, and deleting super-cooled cloud water. 結果表明，該地區秋季對流雲降水主要為冷雲降水，冰晶是霰產生的主要來源，冰霰自動轉化是霰產生的最主要方式，冰晶與霰的碰並又促進了霰的進一步增長，霰是雲中過冷水消耗的主要因素。
The visible satellite imageries on the day gradually revealed a low-level circulation centre drifting to the northeast, leaving the cloud bands near southeastern Hainan. 當天的可見光衛星雲圖可見天鵝的低層環流中心向東北飄移，而對流雲帶則停留於海南西南部。
