Lightning activities are distributed asymmetrically over the globe. Satellite images show that the Himalayan region is one of the prone zones of lightning activity. We do not understand such an uneven distribution of lightning activities as of today. To elaborate on the present-day understanding of lightning flashes over the Himalayan region, we have analyzed various atmospheric factors in association with Lightning Flash Density (LFD). For this purpose, we divided the Himalayan Range into three sections, namely, eastern, middle, and the western Himalayas. We explored the possible association of monthly mean Convective Available Potential Energy (CAPE), Surface Air Temperature (SAT), thermodynamic temperature of the top of the cloud; Cloud Top Temperature (CTT), Relative Humidity (RH), and Specific Humidity (SH) with LFD over the three sections of the Himalayan range. We observed that CAPE and SAT play a vital role in creating instability over that region. In contrast, moderate moisture (i.e., RH) is the most suitable condition for lightning activities over all three sections. The analysis shows that 50–60% RH at 700hpa is the most favorable condition for lightning over the Himalayan region.

闪电活动在全球范围内分布不对称。卫星图像显示，喜马拉雅山地区是雷电活动易发区之一。到目前为止，我们还不了解雷电分布如此不均匀。为了详细说明当今对喜马拉雅地区闪电的了解，我们分析了与闪电密度（LFD）相关的各种大气因素。为此，我们将喜马拉雅山脉分为三个部分，即东部，中部和西部喜马拉雅山脉。我们探索了月平均对流可用势能（CAPE），地表气温（SAT），云层顶部的热力学温度之间的可能联系；云顶温度（CTT），相对湿度（RH），和LFD在喜马拉雅山脉的三个部分的比湿度（SH）。我们观察到，CAPE和SAT在造成该地区不稳定方面起着至关重要的作用。相反，中等湿度（即RH）是在所有三个部分进行雷电活动的最合适条件。分析表明，在700hpa下50-60％的相对湿度是喜马拉雅地区闪电的最有利条件。