The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) said that at 3:00 a.m. on December 20, the location of low pressure 12a (weakened from tropical depression Querubin) was at about 9.2 degrees north latitude, 124.8 degrees east longitude, over the waters of Mahinog and Camiguin.
According to the storm/low pressure information of the Japan Meteorological Agency (JMA), the low pressure will reach level 6, gusting to level 8, in the next 2-3 days, the low pressure will move slowly to the west and west-southwest, weakening after crossing the mainland and islands in the South Philippines and is likely to strengthen again when entering the eastern area of Truong Sa archipelago.
According to the Storm page on the Northwest Pacific, the development of the low pressure is unpredictable due to the impact of the northeast wind flowing in, however, with a large circulation, it will cause bad weather for most areas of the southern sea with strong winds and rough seas, so ships should limit their activities or escape from the danger zone.
From December 23-26, due to the impact of the low pressure west and northwest circulation combined with the northeast wind of cold air, a widespread rainstorm will occur in the provinces from Hue to Ninh Thuan, the Central Highlands and the South, with many places having heavy rain with common rainfall of about 150-250 mm, locally over 350 mm.
According to the weather forecast of the Vietnam National Center for Hydro-Meteorological Forecasting, on December 20, at Huyen Tran station, there were strong winds of level 7, gusting to level 9; Phu Quy island had strong gusts of level 7-8; Truong Sa island station had strong winds of level 6, gusting to level 8.
Forecast for the day and night of December 20, in the North East Sea (including the Hoang Sa archipelago), from Binh Dinh to Ca Mau, between the East Sea and the western sea area of the South East Sea (including the western Truong Sa archipelago), strong winds of level 6, sometimes level 7, gusting to level 8-9. Strong seas. Wave height from 3-6m.
From Da Nang to Quang Ngai, there will be winds of level 6, gusting to level 7-8. Rough seas. Waves are 2-4.5m high.
On the day and night of December 20, the South China Sea (including the Truong Sa archipelago) will have scattered showers and thunderstorms. During thunderstorms, there is a possibility of tornadoes and strong gusts of wind of level 7-8.
On the same day, December 20, the US Joint Typhoon Warning Center (JTWC) is also monitoring Depression 97W south of Guam.
This low pressure is still weak and unorganized, but is expected to strengthen in the next few days as the low pressure moves northwest into the Philippine Sea.
Another low pressure area on the northwest coast of Borneo has increased coverage and organization over the past 24 hours. However, the circulation of the low is not clearly defined and the system only generates light winds. Environmental conditions could support the formation of a tropical depression on December 23.