Storm No. 12's circulation causes widespread heavy rain from Ha Tinh to Quang Ngai.

(Chinhphu.vn) – Storm No. 12 will make landfall in the area from Da Nang to Quang Ngai around October 23, then weaken into a tropical depression on land. The storm circulation combined with cold air and East wind disturbances will cause widespread heavy rain in the provinces from Ha Tinh to Quang Ngai.

Path of storm No. 12 on the afternoon of October 20

According to the National Center for Hydro-Meteorological Forecasting, at 4:00 p.m. on October 20, the eye of the storm was located at about 18.5 degrees North latitude; 115.3 degrees East longitude, about 380 km east-northeast of Hoang Sa special zone. The strongest wind near the eye of the storm was level 9-10 (75-102 km/h), gusting to level 12. Moving west-northwest, speed about 20 km/h.

Immediately after entering the East Sea, the storm moved west-northwest at a speed of about 20 km/hour and tended to strengthen, reaching level 11, gusting to level 13 in the next 24 hours.

From October 22 onwards, when approaching the northwest sea area of ​​Hoang Sa, the storm began to gradually shift to the southwest, slowing down, and gradually weakening before making landfall.

Thus, it can be seen that storm No. 12 moves in a curved trajectory, initially moving west-northwest, then gradually moving southwest as it approaches the Central region.

Discussing the scenarios of storm No. 12 that may impact mainland Vietnam, Deputy Director of the National Center for Hydro-Meteorological Forecasting Hoang Phuc Lam said that according to the latest forecast, storm No. 12 will make landfall in the area from Da Nang to Quang Ngai around October 23, with strong winds of level 6, gusting to level 8, then weakening into a tropical depression on land.

Notably, the storm circulation combined with cold air and East wind disturbances will cause widespread heavy rain in the provinces from Ha Tinh to Quang Ngai. Common rainfall: Ha Tinh to North Quang Tri and Quang Ngai: from 200-400 mm, some places over 500 mm; South Quang Tri to Da Nang: 500-700 mm, some places over 900 mm. Prolonged heavy rain can cause flash floods, landslides in mountainous areas, deep flooding in low-lying and urban areas.

This is the main scenario considered - although the storm weakens quickly after reaching the shore, the circulation combined with cold air will cause widespread rain and floods that will last until the end of October.

Mr. Hoang Phuc Lam further analyzed that cold air from the north flowing down to the East Sea while the storm moves close to shore will strongly affect the direction and intensity of the storm.

Specifically, the cold air flow causes the storm to gradually shift to the southwest and weaken rapidly as it approaches land. However, the interaction between the storm circulation, cold air and the East wind causes heavy rain to increase over a wide area of ​​the Central region. In other words, the cold air reduces the storm's wind strength but increases the risk of flooding, especially in the provinces from Quang Tri to Quang Ngai .

When making landfall in the Da Nang - Quang Ngai region on October 23, storm No. 12 is forecast to be at level 6, gusting to level 8, then weakening into a tropical depression. From the night of October 22 to October 26, heavy rain will continue.

Regarding floods, from October 23 to 30, a major flood will occur on rivers from Quang Tri to Quang Ngai, with peak water levels reaching or exceeding alert level 3, causing deep and widespread flooding, along with a high risk of flash floods and landslides. The disaster risk level is forecast at level 3.

Therefore, people in the Central region, especially provinces from Ha Tinh to Quang Ngai, need to proactively prepare plans to prevent heavy rain, flooding and landslides, ensuring safety for people and property.

Thu Cuc

Source: https://baochinhphu.vn/hoan-luu-bao-so-12-gay-mua-dien-rong-rat-lon-tu-ha-tinh-den-quang-ngai-102251020175540087.htm