Today (August 21), the Northeast region and from Thanh Hoa to Nghe An will have moderate rain, heavy rain and thunderstorms, locally very heavy rain in some places.
According to the National Center for Hydro-Meteorological Forecasting, rainfall from 7 am to 2 pm on August 21 in some places exceeded 70mm such as the monitoring stations of Ban Chat (Lang Son) 92.3mm, Ban Sen (Quang Ninh) 75.9mm, Kien Xuong (Hung Yen) 90.6mm, Binh Hoa (Ninh Binh) 82.3mm...
The cause of the rain is due to the influence of a tropical convergence zone with its axis passing through the Northern Delta connecting to a tropical depression in the Gulf of Tonkin area, which is likely to strengthen into storm No. 4.
The Northeast region, the south of Phu Tho and Thanh Hoa provinces from the evening of August 21st to August 23rd, will have moderate rain, heavy rain and thunderstorms with common rainfall from 70 - 150mm, locally very heavy rain over 300mm.
In which, the Northeast region includes Tuyen Quang, Cao Bang, Thai Nguyen, Lang Son, Quang Ninh, Hai Phong city, Bac Ninh, Hung Yen, Ninh Binh, Hanoi city; the northern area of Phu Tho province (Vinh Phuc and former Phu Tho provinces)
Especially in the Lang Son, Bac Ninh, Quang Ninh and Hai Phong city areas, there will be heavy to very heavy rain with common rainfall of 150 - 250mm, locally over 400mm. Warning of the risk of heavy rain with rainfall greater than 120mm within 3 hours.
From the night of August 23 and the day of August 24, the Northeast region, the south of Phu Tho and Thanh Hoa provinces will continue to have moderate rain, heavy rain and thunderstorms with common rainfall of 30-60mm, locally very heavy rain over 120mm.
Total rainfall from the evening of August 21st to the 24th is commonly 100-200mm, locally over 400mm; especially Lang Son, Bac Ninh, Quang Ninh, and Hai Phong city are commonly 200-300mm, locally over 500mm. Rain developments are forecast to likely continue after August 24th.
Nghe An, Central Highlands and Southern regions in the afternoon and night of August 21, there will be showers and scattered thunderstorms with rainfall of 15-30mm, locally heavy rain over 60mm.
In thunderstorms, there is a possibility of tornadoes, lightning and strong gusts of wind. Warning level of natural disaster risk due to heavy rain, tornadoes, lightning, and hail is level 1.
Heavy rain is likely to cause flooding in low-lying areas, urban areas, and industrial parks; flash floods on small rivers and streams, and landslides on slopes.
