Explaining the phenomenon from a meteorological perspective, Vo Van Hoa, Director of the Northern Vietnam Meteorological and Hydrological Station, said that the main cause was strong thunderstorms that triggered lightning strikes in Hanoi during that period. Furthermore, this is the transitional season, so lightning strikes during thunderstorms are common in recent times.
At 7:30 AM on October 11th, the National Center for Meteorological and Hydrological Forecasting issued a warning about thunderstorms, tornadoes, lightning, hail, and localized heavy rain in Hanoi's inner city. At the time of the warning, a strong convective cloud system was developing and causing thunderstorms in the Chuyen My, Dai Xuyen, and Ung Hoa areas of Hanoi. This cloud system continued to move and expand towards the inner city. The warning indicated the possibility of tornadoes, lightning, and strong gusts of wind during the thunderstorm.
Regarding further information on lightning strikes caused by thunderstorms, Dr. Truong Ba Kien, Deputy Director of the Center for Hydrometeorological Research, Institute of Hydrometeorology and Climate Change, Ministry of Agriculture and Environment, stated that lightning strikes often occur during thunderstorms because when thunderstorm clouds undergo strong electrical polarization, they create a large potential field between the clouds and the ground. The continuous discharge process can cause lightning to appear in rapid succession at the same location or in nearby areas. The discharge of electricity from the clouds and the discharge of electricity from the clouds to the ground also create lightning. In addition, the interaction between warm, humid air masses and cold air, along with the rapid formation of thunderstorm clouds, further increases the intensity of thunderstorms and lightning.
Source: https://baotintuc.vn/xa-hoi/set-danh-xuong-ha-noi-la-do-dong-manh-20251011135553968.htm
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