According to the National Center for Hydro-Meteorological Forecasting, currently, the cold air mass in the north is moving southward. In the North, there is rain in some places, the common temperature is 28 - 31 degrees C, in some places above 31 degrees C.
Ms. Le Thi Hong Van, Weather Forecast Department, National Center for Hydro-Meteorological Forecasting, on April 22, the weather in the Northern region is generally with light rain in some places, sunny in the afternoon with temperatures of 30 - 34 degrees C, locally hot weather above 35 degrees C. Hot weather is concentrated in some mountainous provinces and the Northwest.
Around the night of April 22, the cold air mass will affect the Northeast region, then affect some places in the Northwest and North Central regions. On land, the wind will turn northeast at level 2-3, coastal areas at level 3-4.
From tomorrow night, April 22nd, due to the influence of weak cold air combined with wind convergence at high atmospheric levels, the Northern region will have showers and thunderstorms again, with locally heavy rain. On April 23rd, thunderstorms will spread down to the Thanh Hoa to Ha Tinh areas. From April 23rd, the North will turn cool, with a temperature of only about 26 - 29 degrees Celsius. From the evening of April 23rd to April 25th, the Central Central region will have scattered showers and thunderstorms" - Ms. Hong Van said.
According to Ms. Van, the lowest temperature in this cold air wave in the Northern region and Thanh Hoa is commonly from 21 - 24 degrees C, mountainous areas have places below 20 degrees C.
Hanoi area from the night of April 22 to April 23 will have showers and scattered thunderstorms; from April 23 the weather will turn cool. The lowest temperature in this cold air wave is commonly 22 - 24 degrees C.
Rainstorms occurring in the transitional months often come with dangerous weather phenomena such as tornadoes, lightning, hail and strong gusts of wind. Especially hail often appears in the areas of Lao Cai, Tuyen Quang, Cao Bang, Son La, Phu Tho or the western mountainous areas of Thanh Hoa, Nghe An" - a representative of the Weather Forecast Department added.
The meteorological agency warns that thunderstorms accompanied by tornadoes, lightning, hail and strong gusts of wind can affect agricultural production, causing trees to fall, damage to houses, traffic works, and infrastructure. Strong winds and gusts of wind, and large waves at sea are likely to affect the operation of ships and other activities.
At sea, from near dawn on April 23, in the sea area north of the Gulf of Tonkin, the wind will turn northeast at level 5, sometimes level 6, gusting at level 7, rough seas, waves 1.5 - 2.5m high.
