According to data from the National Center for Hydro-Meteorological Forecasting, from the morning of March 29 to the early morning of March 30, the northern provinces experienced 2 widespread showers and thunderstorms. The first wave occurred from the morning to noon on March 29. The second wave was heavy thunderstorms starting at about 1 am on March 30 and lasting until about 7-8 am on the same day. Thunderstorms occurred in many places, including heavy rain in some places.
Rainfall measured from 7:00 p.m. on March 29 to early afternoon on March 30 at some stations exceeded 50mm such as: Ben Temp (Hai Phong) 72.4mm; Co Phap (Bac Ninh) 70.4mm; Grapefruit (Hanoi) 54.3mm…
Also during this time, some provinces/cities such as Hanoi, Lao Cai, Phu Tho, Son La recorded phenomenons of hailstorms causing damage to people and property. Strong thunderstorms accompanied by hailstorms and tornadoes are still common phenomena during the transitional season, due to clashes between different hot and cold air masses, along with strong activity of the West wind zone over 3000 - 5000m.
It is forecasted that on March 30 and March 31, hot weather will occur in the Northwest region and provinces/cities from Thanh Hoa to Hue with the highest temperature possibly reaching 35 - 38 degrees C. The capital area of Hanoi and the Northeast provinces on March 30 will have localized hot weather, and on March 31, it may occur on a large scale.
Then, from the night of March 31st to April 1st, the North may be affected by a weak cold air wave. Therefore, in the period April 1st - April 2nd, the weather will be cool, and the mountainous areas will be chilly.
The National Center for Hydro-Meteorological Forecasting warns that due to this weather change, there will be a conflict between weak cold air and hot air mass, causing the mountainous areas of the Northern and North Central regions to be likely to experience strong thunderstorms, accompanied by the risk of tornadoes, lightning, hail and strong gusts of wind.
These phenomena often occur quickly and unexpectedly, can cause roofs to be blown off, trees to fall, and affect people's lives, production, and lives.
The meteorological agency recommends that people closely monitor weather forecasts, limit going out when there are thunderstorms, and proactively reinforce houses, protect property and vehicles to minimize damage.