Updated from the National Center for Hydro-Meteorological Forecasting, at 10:00 a.m. on September 23, the center of super typhoon No. 9 Ragasa was at about 20.2 degrees north latitude; 117.7 degrees east longitude, in the northeastern sea of the northern East Sea. The strongest wind near the center of the super typhoon is level 16-17 (184-221 km/h), gusting over level 17. Moving west-northwest at a speed of about 20 km/h.
It is forecasted that in the next 24 hours, the super typhoon will move west-northwest at a speed of 20-25 km/h and gradually weaken.
At 10:00 on September 24, the center of the storm was at about 21.7 degrees north latitude; 113.4 degrees east longitude, about 340 km east of Zhejiang Peninsula (China). Strong intensity level 15-16, gust above level 17.
The danger zone is north of latitude 18 degrees north, east of longitude 111 degrees east. The natural disaster risk level is level 4 for the northern sea area of the North East Sea, level 3 for the east of the northern Gulf of Tonkin.
It is forecasted that in the next 48 hours, the storm will move west at a speed of 20-25 km/h, continuing to weaken.
At 10:00 on September 25, the center of the storm was at about 21.5 degrees north latitude; 108.5 degrees east longitude, in the waters of Quang Ninh - Hai Phong. Strong intensity level 10, gust level 12.
The danger zone is north of latitude 19 degrees north, west of longitude 116.5 degrees east. The natural disaster risk level is level 4 for the northwestern sea area of the northern East Sea, level 3 for the Gulf of Tonkin and the northeastern coastal areas.
It is forecasted that in the next 60 hours, the storm will move west-southwest at a speed of about 25 km/h, weakening into a tropical depression. At 10:00 p.m. on September 25, the center of the tropical depression was at about 21.1 degrees north latitude; 105.9 degrees east longitude, on the mainland of the Northern Delta and midlands. Strong intensity level 6, gust level 8.
The danger zone is 19.5 degrees north latitude north of the latitude, 110.5 degrees east of the longitude west of the longitude. Level 3 natural disaster risk for the Gulf of Tonkin, the northeastern region of the Ministry and Thanh Hoa.
It is forecasted that in the next 72 hours, the tropical depression will move west-southwest at a speed of about 25 km/h, weakening into a low pressure area.
At 10:00 on September 26, the center of the low pressure area was at about 20.6 degrees north latitude; 103.3 degrees east longitude, in the Upper Laos area. Intensity below level 6.
Forecast of the impact of the storm at sea, the sea area north of the northern East Sea will have strong winds of level 10-14, the area near the center of the super typhoon will have winds of level 15-17, gusts above level 17, waves above 10 m high, and rough seas.
From September 24, the eastern sea area of the Gulf of Tonkin (including Bach Long Vy special zone) will have winds gradually increasing to level 6-7, gusting to level 9. From the evening and night of September 24, the Gulf of Tonkin (including Bach Long Vy, Van Don, Co To, Cat Hai and Hon Dau island) will gradually increase to level 8-9, waves 2-4 m high, near the storm center will have level 10-12, gusts of level 14, waves 4-6 m high, and rough seas.
Storm surge in coastal and coastal areas of Quang Ninh - Hai Phong provinces will have storm surge of 0.5-1.0 m. There is a high risk of landslides, sea dykes, and destruction of aquaculture areas and coastal boats due to strong winds, rising sea water and big waves.
On land, from the morning of September 25, coastal areas from Quang Ninh to Thanh Hoa will have winds gradually increasing to level 6-7, then increasing to level 8, near the storm center level 9-10, gusting to level 12. The deep inland area northeast of the Ministry has strong winds of level 6-7, gusting to level 8-9.
Regarding heavy rain, from the night of September 24 to the end of the night of September 26, in the Northern region, Thanh Hoa and Nghe An, there will be heavy to very heavy rain with common rainfall of 100-250 mm, locally over 400 mm. Beware of heavy rain causing urban flooding. Heavy rain is likely to cause flooding in low-lying areas; flash floods on small rivers and streams; landslides on steep slopes.
Due to the influence of a wide storm circulation, it is necessary to be on guard against the risk of thunderstorms, tornadoes and strong gusts of wind both before and during the storm's landfall.
