At 1730 hours, the team released the first GPS-equipped Dropsonde over the sea off the northeast coast of Taiwan. Then, moving around the peripheral circulation in a counterclockwise direction, they deployed the remaining 14 devices. These would measure data like wind velocity, wind direction, humidity, and barometric pressure, and immediately relay this data to the CWB and early-warning agencies in various countries.
下午 5 時 30 分，研究人員在台灣東北角外海投下第一枚具有定位功能的「投落送」大氣探空儀，並以逆時針方式，飛繞韋帕颱風的外圍環流，繼續投下其餘 14 枚，以量測颱風環流的風速、風向、溼度、氣壓等大氣資料，並即時回傳給中央氣象局及各國的預報單位。