Last night and this morning (August 18), the mountainous and midland areas of the Northern region, the Central Highlands and the Southeast region had rain, moderate rain and thunderstorms, with locally heavy to very heavy rain.
Rainfall calculated from 7 pm on August 17 to 8 am on August 18 in some places over 100mm such as the Central Monitoring Station 1 (Lao Cai) 153.8mm, Cam Khe (Phu Tho) 133.8mm, Lao Bao (Quang Tri) 139.4mm, Bach Dang (Cao Bang) 100.5mm...
Warning of extreme rain risk
The Midlands and Northern Delta region from August 18 to the night of August 19, from Thanh Hoa to North Quang Tri, will have moderate rain, heavy rain and thunderstorms, with common rainfall of 70 - 160mm, locally very heavy rain over 250mm.
On the day and night of August 20, the Northern Delta region will have moderate to heavy rain with common rainfall of 30 - 60mm, locally very heavy rain over 100mm.
The intertropical convergence zone with its axis passing through the Northern and North Central regions is the cause of this widespread heavy rain. Rain concentrates in the afternoon and night.
The Northern mountainous region from August 18 to the night of August 19, will have moderate to heavy rain with common rainfall of 50 - 110mm, locally very heavy rain over 200mm. Warning of the risk of heavy rain with rainfall greater than 100mm within 3 hours.
The Central Highlands and Southern regions on the day and night of August 18, will have showers and scattered thunderstorms with rainfall of 15-30mm, locally heavy rain over 60mm (rain concentrated in the afternoon and night).
The area from Thanh Hoa to North Quang Tri from August 18 to the night of August 19, will have moderate rain, heavy rain and thunderstorms, with common rainfall of 70 - 160mm, locally very heavy rain over 250mm.
From August 20 to August 21, from Thanh Hoa to North Quang Tri, there will be moderate to heavy rain with common rainfall from 60 - 140mm, locally very heavy rain over 200mm.
Warning level of natural disaster risk due to heavy rain, tornadoes, lightning, and hail is level 1.
Flood warning on rivers in the Northern and North Central regions
Regarding the hydrological situation, currently, the water level on rivers in the Northern region, from Thanh Hoa to Quang Tri, changes slowly and is below alarm level 1.
From tonight (August 18) to August 21, on rivers in the Northern region, rivers from Thanh Hoa to Quang Tri are likely to experience a flood, with flood amplitudes rising above rivers from 2 - 5m.
During this flood, the flood peak on small rivers in the North, upstream of rivers from Thanh Hoa to Ha Tinh will reach alarm level 1-alerte level 2; the flood peak in the upstream of the main rivers of the North, rivers in Quang Tri is likely to reach alarm level 1 and above alarm level 1; the flood peak downstream of the main rivers of the North, from Thanh Hoa to Ha Tinh, is still below alarm level 1.
High risk of flash floods and landslides in mountainous and midland provinces; flooding in low-lying areas along rivers, urban areas in the Northern region, from Thanh Hoa to Quang Tri.
Warning level of natural disaster risk due to floods is level 1. Floods on rivers and streams can cause flooding in low-lying areas along rivers, affecting activities such as waterway traffic, aquaculture, agricultural production, people's livelihoods and socio-economic activities.
