“弱雷电”环境下雷击致灾形成机制及特征分析

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Abstract Based on lightning casualty data and highresolution lightning monitoring and radar echo observations in Jiujiang,Jiangxi Province from 2001 to 2024,this study investigates the characteristics of lightning strikes occurring under macroscale "weak lightning"conditions (density ≤ 2.5 flashes/km²).The results indicate that these events are predominantly triggered by localized severe convective systems,such as isolated thunderstorm cells and short echo bands.Highrisk areas are concentrated in "weak echo"zones,including the southwestern or eastern edges of thunderstorm cells and the rear or junctions of short echo bands,with topographic lifting in mountainous and hilly regions significantly amplifying local risks.The article highlights the limitations of traditional risk assessments based solely on largescale lightning density and emphasizes the urgent need to establish a comprehensive early warning system that integrates highprecision monitoring,topographic features,and localized convective structures to enhance protection against lightning strikes in weak lightning environments.

Key words： lightning strike event radar echo weak lightning Jiujiang City

Received: 07 September 2026

ZTFLH:

P427.32

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	Articles by authors
	Xu Wang
	Duan Heping
	Xia Xue
	Deng Hongxia

Cite this article:

Xu Wang,Duan Heping,Xia Xue等. Analysis of the formation mechanism and characteristics of lightninginduced disasters under "weak lightning" conditions[J]. Meteorological Hydrological and Marine Instrument, 2026, 43(5): 65-69.

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http://www.qxswhy.com/EN/ OR http://www.qxswhy.com/EN/Y2026/V43/I5/65

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