According to the National Center for Hydro-Meteorological Forecasting, at 1:00 p.m. on October 20, the center of storm No. 12 Fengshen was at about 18.3 degrees north latitude - 115.9 degrees east longitude, about 460 km east-northeast of Hoang Sa Special Zone. The strongest wind near the storm center is level 9-10 (75-102 km/h), gusting to level 12. The storm is moving west-northwest at a speed of about 20 km/h.
It is forecasted that in the next 24 hours, the storm will move westward at a speed of about 10-15 km/h and is likely to strengthen. At 1:00 p.m. on October 21, the center of the storm was at about 18.1 degrees north latitude - 112.6 degrees east longitude, about 170 km north of Hoang Sa Special Zone. Strong wind level 11, gust level 13.
The danger zone in the East Sea is from 16.5-20.5 degrees north latitude - 110.5-118.0 degrees east longitude. The natural disaster risk level is level 3 for the northern East Sea area, including the Hoang Sa special zone.
It is forecasted that in the next 48 hours, the storm will change direction due to interaction with cold air; moving southwest at a speed of about 10 km/h and likely to weaken. At 1:00 p.m. on October 22, the center of the storm was at about 16.9 degrees north latitude - 110.6 degrees east longitude, in the northwest sea of Hoang Sa special zone. Strong wind level 9, gust level 11.
The danger zone is from 15.5-20.5 degrees north latitude - 109-115 degrees east longitude. Level 3 natural disaster risk for the western sea area of the northern East Sea (including Hoang Sa special zone) and the sea area from southern Quang Tri to Quang Ngai.
It is forecasted that in the next 72 hours, the storm will move southwest at a speed of 10-15 km/h. At 1:00 p.m. on October 23, the center of the storm was at about 15.4 degrees north latitude - 108.2 degrees east longitude, on the mainland from Da Nang city to Quang Ngai. The storm intensity is likely to gradually weaken into a tropical depression, with strong winds of level 6, gusting to level 8.
The danger zone is from 14.5-19.0 degrees north latitude, west of 113.0 degrees east longitude. Level 3 natural disaster risk for the western sea area of the northern East Sea (including Hoang Sa special zone) and the sea area from southern Quang Tri to Quang Ngai (including Ly Son special zone).
Warning in the next 72 to 84 hours, the tropical depression will move mainly southwest, traveling about 10 km per hour, moving deep into the mainland and gradually weakening into a low pressure area.
Regarding the impact of the storm at sea, the northern East Sea area (including Hoang Sa special zone) has strong winds of level 7-8, the area near the storm's eye has strong winds of level 9-11, gusts of level2; waves 3-5 m high, the area near the storm's eye is 5-7 m high; the sea is very rough. All ships and boats operating in the above-mentioned dangerous areas are likely to be affected by thunderstorms, whirlwinds, strong winds and large waves.
On land, due to the influence of storm circulation and cold air combined with easterly wind disturbances, terrain effects and easterly winds after the storm, from the night of October 22 to October 26, the area from Ha Tinh to Quang Ngai is likely to experience widespread heavy rain.
There is a high risk of flash floods and landslides in mountainous areas, flooding in low-lying areas and urban areas. Localities need to pay attention to safe operation of hydroelectric and irrigation reservoirs before, during and after the storm; prepare response plans for flood scenarios on rivers from Quang Tri to Quang Ngai that are likely to reach alert level 3 and exceed alert level 3. The forecast level of natural disaster risk due to floods and inundation is level 3.
