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In the early part of May 2026, the phenomenon of hail appearing heavily in both mountainous, midland and plain areas is a rare thing. Download Hail has caused serious damage in many localities in the Northern and North Central regions. On the afternoon of May 4, Mr. Nguyen Van Huong, Head of Weather Forecasting Department, National Center for Hydro-Meteorological Forecasting, Department of Hydro-Meteorological Forecasting (Ministry of Agriculture and Environment) informed about the phenomenon of hail continuously occurring in the Northern region in recent days, warning of signs of recognition and response when hail occurs. According to the report of the National Center for Hydro-Meteorological Forecasting. On May 2-4, thunderstorms, tornadoes, lightning and especially hail caused heavy damage in many localities in the Northern and North Central regions, especially in the Northern mountainous provinces. Recorded data as well as updated reports from localities show that in the evening and night of May 2 alone, thunderstorms, tornadoes, and hail occurred in the provinces of Dien Bien, Lai Chau, Lao Cai, Tuyen Quang, Phu Tho, Thai Nguyen and the capital Hanoi. On the evening and night of May 3, Nghe An and Ha Tinh provinces also recorded thunderstorms, lightning and hail. In addition to thunderstorms, tornadoes and hail, in the period from the evening of May 2 to this morning (May 4), widespread thunderstorms occurred in the Northern and North Central provinces, locally there were places with heavy to very heavy rain such as: Tan Pheo station (Phu Tho) 171 mm, Lam Thao (Phu Tho) 168 mm, Ky Giang (Ha Tinh) 156 mm,... Mr. Nguyen Van Huong commented: The phenomenon of thunderstorms and lightning cyclones appearing during the changing seasons (April and May and the period September-October) in the Northern provinces is not unusual and not rare. However, in the early period of May 2026, according to preliminary assessment, the phenomenon of hail appears concentrated. Many in the mountainous, midland and plain areas is a rare thing. According to Mr. Nguyen Van Huong, the phenomenon of large-sized hail, with stones the size of chicken eggs or tennis balls, occurring in recent days in provinces such as Phu Tho and Thai Nguyen may be because in recent days, this area has continuously maintained a hot and humid state, with daytime sunshine, accumulating convective energy in the atmosphere. Besides, there exists a low trough in the strong westerly wind zone at an altitude of about 5,000 m; At the same time, in the north, there is a weak cold air segment moving south, compressing the low pressure trough passing through the North. In the afternoon, due to rising temperatures, hot and humid air masses are pushed up strongly, forming thunderclouds that grow very quickly in the vertical direction. It is in this highly unstable environment that the updraft is so strong that it keeps ice chunks in thunderclouds longer and causes them to grow larger before falling; If these ice particles melt into water before reaching the ground, they will form normal rains. If they do not melt in time, they will form hailstorms. Forecasting natural disaster trends and some signs to recognize when hail occurs, Mr. Nguyen Van Huong said that in the coming time, there is a very high possibility of El Nino appearing (80-90%) from mid-2026, which can reach very strong intensity at the end of the year (20-25%) and last. extending into 2027. This year, hot weather is forecast to be more intense and intense than average, rain and storms are less, but thunderstorms, tornadoes, hail during the transition period and local heavy rains may also appear a lot. Localized, high-intensity heavy rain in a short period of time can cause flash floods, landslides and urban flooding, especially in mountainous areas and steep terrain. It is forecasted that a new wave of cold air will impact near May 8-9, so this weekend the North will continue to have thunderstorms and face the risk of storms, tornadoes, hail and strong winds. In addition, around May 5-7, 2026, there is also a possibility of widespread showers and thunderstorms in the southern areas of the Central and Southern Highlands. Raining time is concentrated from afternoon to evening. During thunderstorms, you also need to be wary of lightning, hail and strong winds. Signs of recognizing and responding to hail Hail is a very small-scale phenomenon that often accompanies strong thunderstorms during the changing season. Hail often comes with quite specific signs that people can actively recognize, such as the sky appearing with strongly developed thunderclouds, the air changing from hot to cool very quickly, strong gusts of wind, and heavy showers accompanied by thunder. When these signs appear, people should quickly find a safe shelter, avoid being outdoors or under large trees. Recommendations for responding to thunderstorms, tornadoes, lightning and hail: People need to regularly closely monitor warning bulletins, during the changing seasons (April-May and October-November), when observing dark skies and strong thunderstorm clouds developing, that is when there is a risk of thunderstorms, tornadoes and rain. If there are rocks, people should limit going out on the streets, find a safe shelter, wait for the storm to pass before continuing to move, avoid standing under large trees, electricity poles, billboards or temporary structures. When there is hail, you should stay indoors, close the door, and stay away from glass doors.To limit breakage and injury. For strong wind gusts, it is necessary to reinforce the roof, brace against objects susceptible to wind, and do not stay near areas at risk of collapse. In addition, turn off electrical equipment when there is lightning, limit the use of phones outdoors to reduce the risk of being struck by lightning. Thu Cuc See moreWarning of thunderstorms, risk of tornadoes, lightning and hail in the North See moreProactively respond to thunderstorms, cy
