Storm No. 12 gradually weakens, warning of prolonged heavy rain and widespread flooding

(Chinhphu.vn) – Storm No. 12 is not too strong but its developments are complicated due to interaction with cold air; the main risk lies not in wind strength but in prolonged heavy rain and widespread flooding.

Location of storm No. 12 at noon on October 21

According to the National Center for Hydro-Meteorological Forecasting, at 1 p.m. on October 21, the storm center was at about 17.5 degrees North latitude - 112.2 degrees East longitude, in the sea north of the Hoang Sa archipelago, about 450 km east-northeast of Da Nang . The strongest wind near the storm center was level 9-10 (75-102 km/h), gusting to level 12. The storm moved southwest at a speed of 10-15 km/h.

1:00 p.m. October 22: The storm moves in a West-Southwest direction at a speed of 10-15 km/h, with its center at about 16.2 degrees North latitude - 109.6 degrees East longitude, about 145 km east-northeast of Da Nang. Wind force is level 8, gusting to level 10, gradually weakening.

13:00 October 23: The storm continues to move in a West-Southwest direction at a speed of 10-15 km/h, moving inland through the area from Quang Tri to Da Nang, then gradually weakens into a tropical depression and then a low pressure area over the Southern Laos area (15.0 degrees North latitude - 107.1 degrees East longitude). Wind force below level 6.

Due to the influence of storm circulation No. 12 combined with cold air and easterly winds, and topographic effects, from noon on October 22 to October 27, the area from Ha Tinh to Quang Ngai will have heavy to very heavy rain, most concentrated from the afternoon of October 22 to the end of October 23: Ha Tinh - North Quang Tri and Quang Ngai: 200-400 mm, some places >500 mm. South Quang Tri - Da Nang: 500-700 mm, some places >900 mm.

Warning of very heavy rain (>200 mm/3 hours). Heavy rain in the Central region is likely to last until the end of October 2025. There is a very high risk of flash floods and landslides in mountainous areas; flooding in low-lying and urban areas.

Localities need to proactively operate hydroelectric and irrigation reservoirs safely and prepare response plans when river water levels from Quang Tri to Quang Ngai are likely to reach or exceed alert level 3.

According to the National Center for Hydro-Meteorological Forecasting, although storm No. 12 is not too strong, its development is complicated due to interaction with cold air. The main risk is not wind power but prolonged heavy rain, widespread flooding, and special attention should be paid to the risk of landslides and flash floods in the mountainous areas of the Central Central region.

The North is dry and sunny, getting cold at night and in the morning.

According to the National Center for Hydro-Meteorological Forecasting, from October 20-21, a cold spell affected the North and North Central regions. Northeast winds at monitoring stations in the Gulf of Tonkin increased sharply, such as Bach Long Vy recorded winds of level 6-7, gusting to level 8; Con Co wind of level 6.

The cold air is expected to continue to strengthen in the next 1-2 days, expanding its influence to the Central Central region. The North and Thanh Hoa are forecast to be cold at night and in the morning, and cold in the mountainous areas. The lowest temperature is between 19-21°C, in the mountainous areas 17-19°C, and in the high mountains below 16°C.

Hanoi area: no rain at night, sunny during the day. Lowest temperature at night and morning is around 19-21°C.

At sea, northeast winds combined with storm circulation No. 12 cause the northern East Sea (including Hoang Sa archipelago) to have strong winds of level 7-8, near the storm center of level 9-11, gusts of level 13, waves 5-7m high, and rough seas.

In the Gulf of Tonkin, strong northeast wind level 6-7, gust level 8-9, waves 2-4 m high, rough sea.

Thu Cuc

Source: https://baochinhphu.vn/bao-so-12-suy-yeu-dan-canh-bao-mua-lon-keo-dai-ngap-lut-dien-rong-102251021145121343.htm