According to the National Center for Hydro-Meteorological Forecasting, currently, cold air has affected the entire Northeast region, some places in the Northwest and North Central regions. The North and Thanh Hoa have had moderate rain, heavy rain and thunderstorms, locally very heavy rain; the temperature dropped by about 7 - 10 degrees Celsius. The north of the Gulf of Tonkin has had strong northeast winds at level 5, sometimes level 6.
On June 9, cold air will continue to affect some other places in the Northwest and North Central regions. On land, northeast wind level 2 - 3, coastal areas level 3.
The Northeast region and Thanh Hoa are cool. The lowest temperature in this cold air wave in the Northeast region and Thanh Hoa is commonly from 22 - 25 degrees C, the Northern mountainous region has places below 21 degrees C. The average temperature is about 24 - 26 degrees C, the mountainous region has places below 24 degrees C.
Hanoi area on June 9 has rain, showers; cool weather. The lowest temperature in this cold air wave is commonly 23 - 25 degrees C.
Regarding rain developments, on the day and night of June 9, the Northwest region will have moderate rain, heavy rain and thunderstorms, with locally very heavy rain.
In thunderstorms, there is a high possibility of tornadoes, lightning, hail and strong gusts of wind.
Rainstorms accompanied by tornadoes, lightning, hail and strong gusts of wind affect agricultural production, causing trees to fall, houses, traffic works, and infrastructure to be damaged. Heavy rain is likely to cause flash floods on small rivers and streams, landslides on slopes, and flooding in low-lying areas.
At sea, the north of the Gulf of Tonkin has strong northeast winds of level 4 - 5, gusts of level 6, sea waves 1.5 - 2.5m high.
Strong winds and gusts, large waves at sea are likely to affect the operation of ships and other activities.
