中文摘要：

利用广东省闪电探测系统资料、卫星云图资料、探空资料及雷击点附近的风廓线雷达、多要素自动站等资料，对发生在湛江市东海岛气象综合探测基地内的一次强雷暴天气过程进行综合分析。结果表明：该次强雷暴天气发生在受高空槽和弱冷空气共同影响的天气过程中，雷击电流强度一54．46366kA，雷电流上升陡度28．66508kA／μs。雷击点在低涡云团内，雷击点雷达回波强度超过45dBZ，风向从底层向上随时间顺转，雷击发生前后雷击点附近的降雨量、风向风速、本站气压和能见度等气象要素产生了明显的突变。发生雷击的当日是处在大气层结由不稳定转变为稳定的过渡时段，弱冷空气、强降水和雷暴的共同作用消耗了大气中的能量和水汽，使大气层结回复到相对稳定状态。

英文摘要：

Based on the data from a lightning detection system, weather satellites and radiosonde in Guangdong province as well as data from wind profilers and multi-elements automatic weather stations in the proximity of the sites hit by thunder, this paper studies the process of an intense thunderstorm inside an inte- grated observation base on Donghai Island, Zhangjiang City. The result is shown as follows. Due to the com- bined effect of an upper-level trough and weak cold air, the thunderstorm weather took place and the light- ning flashes had current intensity of - 54. 463 66 kA and rising current steepness of 28. 665 08 kA/μs. The sites of lightning were within a cloud cluster of vortexes and the radar echoes were more than 45 dBZ. The wind direction turned clockwise in an upward direction. Prior to and after the lightning attack, the rainfall a- mount, wind direction and speed, single-station pressure and visibility all experience significant and abrupt changes near the sites of lightning. The day of lightning was with an atmosphere transforming from unstable to stable stratification and the joint effect of weak cold air, intense rain and thunderstorm consumed the ener- gy and water vapor in the atmosphere and restored the atmospheric stratification back to the state of relative stability.