According to the National Center for Hydro-Meteorological Forecasting, around the evening and night of November 17, the cold air mass is forecast to affect some places in the Northeast region of the North; then affect other places in the Northeast and North Central regions, some places in the Northwest and North Central regions.
Northeast wind inland level 3, coastal area level 4.
From November 18, in the Northeast and Thanh Hoa, the weather will turn cold at night and early morning; from November 20, in the North and North Central regions, the weather will be cold at night and early morning.
The lowest temperature in this cold air mass in the North and North Central regions is generally from 18-20 degrees Celsius, in mountainous areas it is below 15 degrees Celsius.
Specifically, on the day and night of November 18, the lowest temperature in the Northeast and Thanh Hoa is forecast to be around 20-22 degrees Celsius, with some mountainous areas below 17 degrees Celsius.
On the day and night of November 19, in the Northern and North Central regions, the lowest temperature is from 19-21 degrees Celsius, in mountainous areas 15-17 degrees Celsius.
In the Gulf of Tonkin, on the night of November 17, the wind will change direction to Northeast, from November 18, it will gradually increase to level 6, gusting to level 7-8; rough seas; waves from 2.0-3.5m high. Tourists planning to explore the islands, Ha Long Bay, Bai Tu Long Bay and Lan Ha Bay in the next few days should pay attention to prepare warm clothes when traveling and doing outdoor activities in the early morning and late evening.
In the North East Sea area, the Northeast wind (including the Hoang Sa archipelago) is strong at level 6-7, gusting at level 8-9; the sea is rough; waves are 2.0-4.0m high.
Due to the influence of disturbances in the upper easterly wind zone combined with cold air, from early morning on November 18 and 19, in the North and Central Central regions, there will be rain, showers and thunderstorms, locally heavy rain in some places. During thunderstorms, there is a possibility of tornadoes, lightning and strong gusts of wind.
Thunderstorms accompanied by tornadoes, lightning and strong gusts of wind can affect agricultural production, cause trees to fall, damage houses, traffic works and infrastructure.
Localized heavy rains may cause flooding in low-lying areas. Residents and visitors should be on guard against flash floods in small rivers and streams and landslides on steep slopes.
Strong winds and large waves at sea are likely to affect boating and other activities.
