Cold air affected the North from the night of September 9, with heavy rain in the Central and Southern regions

The National Center for Hydrometeorological Forecasting said a cold front is moving south. Around the night of September 9, cold air will affect the northern mountains of the North, then spread to the Northeast, some places in the Northwest and North Central.

During this period, the lowest temperature in the North and North Central region is commonly 21-24 degrees Celsius, with some places in the Northern mountainous region below 19 degrees Celsius.

Particularly on the night of September 9 and 10, the Northeast and North Central regions had the lowest temperature of 22-25 degrees Celsius, in some places in the Northern mountainous region it was below 20 degrees Celsius. The common average temperature was 24-26 degrees Celsius, in some mountainous areas it was below 23 degrees Celsius.

This is the first cold air wave affecting Vietnam in the winter of 2026-2027. On average in many years, the first cold air of the season usually appears from September 12 to October 4. The earliest episode ever recorded was on August 16, 2003.

Due to the impact of cold air combined with the tropical convergence zone, from September 10 to the night of September 11, the area from Thanh Hoa to Hue City, the Central and Southern Highlands had 70-150 mm of rain each time, locally over 250 mm. Heavy rain of over 100 mm can occur in 3 hours, causing the risk of flash floods, landslides and local flooding. From September 12, heavy rain in the Central region is likely to continue for a long time and become complicated.

From the night of September 9, the northern Gulf of Tonkin turned to strong northeast winds at level 4-5. From noon and afternoon of September 10, the Gulf of Tonkin and the northern waters of the North East Sea region had strong northeast winds at level 6, with gusts at level 7-8. Sea waves are 1.5-2.5 m high; Particularly in the northern sea area of ​​the East Sea, it is 2-3 m high.

Faced with the risk of heavy rain, tornadoes, lightning, flash floods, landslides and local flooding in the Central region, the National Civil Defense Steering Committee requires localities to closely monitor weather forecasts and warnings and proactively respond.

Grassroots authorities need to promptly inform people about natural disaster developments; Review and evacuate people in areas at risk of deep flooding, flash floods, and landslides to a safe place. Localities also prepare forces and means on the spot to support people and overcome consequences when situations occur.