Tropical low pressure in the South China Sea intensifies, Hainan launches level 4 emergency response for flood and wind prevention
Quick Look
- The tropical disturbance in the South China Sea intensified into a tropical depression on the morning of the 12th.
- The Hainan Provincial Meteorological Bureau issued a Level 4 typhoon warning and a Level 4 heavy rain warning.
- The Hainan Provincial Disaster Prevention, Reduction and Relief Committee initiated a Level 4 flood and wind prevention emergency response, requiring some cities and counties to immediately initiate emergency response.
AI-generated summary
Why It Matters
The tropical disturbance in the South China Sea intensified into a tropical depression on the morning of the 12th. The center was located on the South China Sea about 330 kilometers south of Sanya City, Hainan Province. The maximum wind force near the center was level 6.
China News Service, Haikou, September 12 (Reporter Wang Ziqian) The tropical disturbance in the South China Sea intensified into a tropical depression on the morning of the 12th. The Hainan Provincial Meteorological Bureau issued a level 4 typhoon warning (sea) at 9:30 that day, and the Hainan Provincial Disaster Prevention, Reduction and Relief Committee launched a level 4 flood and wind prevention emergency response at 10:00.
Meteorological monitoring shows that the center of the South China Sea Tropical Depression was located at 8:00 on the 12th on the South China Sea about 330 kilometers south of Sanya City, Hainan Province (15.3 degrees north latitude, 109.4 degrees east longitude). The maximum wind force near the center was level 6 (13 meters/second).
It is expected that the low pressure will move slowly north-west at a speed of 5-10 kilometers per hour, with little change in intensity, and will make landfall on the coast of central Vietnam from the afternoon to night of the 13th.
Affected by this, the sea surface of Beibu Gulf, the sea surface around Hainan Island, and the sea surface near Xisha and Zhongsha Islands will have wind force of level 6 to 7 and gust level 8 to 9 from the 12th to the 14th; the sea surface near Nansha Islands will have wind force of level 5 to 6 and gust level 7, and gust level 8 to 9 during thunderstorms. It is recommended that passing ships and offshore platforms take shelter from the wind.
The Hainan Provincial Disaster Prevention, Reduction and Relief Committee requires Qionghai, Wanning, Qiongzhong, Baoting, and Lingshui to immediately launch an emergency response no lower than the provincial response level. Other cities and counties must strengthen consultation and judgment, launch emergency response in a timely manner based on the forecast and warning conditions of the meteorological department, and urge relevant responsible departments to do a good job in defense.
The Hainan Provincial Meteorological Bureau also issued a level four heavy rain warning at 09:30 on the 12th: Affected by the tropical low pressure and cold air in the South China Sea, it is expected that from day to night on the 12th, some towns and villages in five cities and counties, including Qionghai and Wanning, will experience rainstorms of 100-150 mm and localized rainstorms. For heavy rainfall of more than 250 mm, some towns and villages in three cities and counties including Sanya will experience rainfall of 50-100 mm and locally more than 150 mm. The remaining cities and counties will experience rainfall of 30-80 mm. Relevant units and personnel are requested to take precautions. (over)
What to Watch
AI outlook — possibilities, not facts
The low pressure will make landfall along the coast of central Vietnam from the afternoon to night of the 13th.
Very likely · Within days
Affected by it, the sea surface of Beibu Gulf, the sea surface around Hainan Island, and the sea surface near Xisha and Zhongsha Islands will have winds of level 6 to 7 and gusts of level 8 to 9 from the 12th to 14th.
Very likely · Within days
Some towns and villages in five cities and counties including Qionghai and Wanning will experience heavy rainfall of 100-150 mm and more than 250 mm locally.
Likely · Within hours
Open Questions
- Will the tropical depression weaken or dissipate after landing in central Vietnam?
- Have cities and counties in Hainan Island actually experienced the heavy rainfall in the warning?
- Are there any reports of vessels or offshore platforms being affected?




