Widespread flooding in Gia Lai, Dak Lak and Khanh Hoa provinces continues after rain and floods have decreased.
Discussing the unusual features of the ongoing flood in the South Central region, Mr. Hoang Phuc Lam, Deputy Director of the National Center for Hydro-Meteorological Forecasting, said that this is a very heavy rain that has lasted for many days in the South Central region (from November 17), right after consecutive heavy rains in October and early November.
With cold air combined with East wind, there have been periods of very extreme rain in short periods of time in localities from Quang Tri to Khanh Hoa .
For example, Son Thanh Tay and Son Thanh Dong, Hoa My Tay, Son Long, Son Dinh, Song Hinh (communes of old Phu Yen , now Dak Lak) all recorded rain from 1,000-1,200 mm.
"Due to the impact of heavy rain, right after the previous floods, hydroelectric reservoirs operated to release water combined with the high water level on rivers in the area, so during this flood, many rivers exceeded historical levels," said Mr. Hoang Phuc Lam.
Regarding the development of floods in the coming time, Mr. Lam said that from now until the night of November 21, rain is forecast to concentrate in the east of Dak Lak and the north of Khanh Hoa with common rainfall of 100-200 mm, in some places over 350 mm.
This makes the risk of flash floods and landslides in coastal areas and the South Central Highlands remain very high.
Floods are gradually receding on most rivers in the South Central region, except for Dinh Ninh Hoa River, Cai Phan Rang River (Khanh Hoa), and Krong Ana River (Dak Lak) which are rising.
It is forecasted that after November 21, the rain will gradually decrease and floods on rivers will decrease faster. However, widespread flooding in Gia Lai, Dak Lak, and Khanh Hoa provinces will continue after the rain and floods decrease.
Flood and rain forecast in the Central region in the next 3 days
On the afternoon of November 20, according to updated information from the National Center for Hydro-Meteorological Forecasting, from the evening of November 20 to the end of November 21: The eastern provinces and cities from Da Nang to Dak Lak and the northern part of Khanh Hoa province will have moderate to heavy rain with common rainfall of 70-150 mm, locally very heavy rain over 250 mm.
From the night of November 21 to the end of November 22: The eastern provinces and cities from Da Nang to Dak Lak will have moderate rain, heavy rain, and locally very heavy rain with common rainfall from 50-100 mm, locally over 200 mm.
In addition, on the night of November 20 and November 21, the Central Highlands and the South will have scattered showers and thunderstorms, with some places experiencing heavy rain with rainfall of 10-30 mm, and some places experiencing over 50 mm (rain concentrated in the afternoon and evening).
On the night of November 22 and on November 23, the eastern provinces and cities from Da Nang to Dak Lak will have moderate to heavy rain with common rainfall from 30-60 mm, locally very heavy rain over 120 mm. From November 24, heavy rain in the Central region will tend to decrease rapidly.
Regarding the current flood situation, the flood on Ba River (Dak Lak) has peaked and is receding. The flood peak at Cung Son station is 40.99 m (1am on November 20), on BĐ3 is 6.49 m, exceeding the historical flood level (in 1993) by 1.09 m; at Phu Lam station is 5.4 m (3am on November 20), on BĐ3 is 1.7 m, exceeding the historical flood level in 1993 (5.21 m) by 0.19 m.
Floods on Cai Nha Trang River have peaked and are receding. The flood peak at Dong Trang station was 13.14 m (at 5:00 a.m. on November 20), 2.14 m above level 3, 0.20 m below the historical flood level in 2003 (13.34 m); floods on Dinh Ninh Hoa River, Cai Phan Rang River (Khanh Hoa), Krong Ana River (Dak Lak) are rising; Huong River, Bo River (Hue), Kon River (Gia Lai) and other rivers from Da Nang to Khanh Hoa are receding.
In the next 6 hours, the flood on Ba River will fluctuate at a high level and above level 3 (equivalent to the historical flood level in 1993 of 5.21 m), then slowly decrease.
In the next 6-12 hours, flood on Ba River will decrease and remain at high level above BĐ3; flood on Kon River will continue to decrease and stay above BĐ2; Krông Ana River will continue to increase and stay above BĐ3; flood on Thu Bon River will decrease below BĐ2.
In the next 12-24 hours, flood on Ba River will continue to decrease and remain at high level from BĐ3 to above BĐ3; flood on Kon River will continue to decrease and stay below BĐ2; Krong Ana River will continue to increase and stay above BĐ3; flood on Thu Bon River will decrease and stay above BĐ1.
In the next 24 hours, floods on Huong River, Bo River, Vu Gia River, Thu Bon River will fluctuate at level 1 to above level 1; Tra Khuc River will fluctuate at level below level 1; other rivers in Dak Lak and Khanh Hoa will decrease and be at level 2-3, some rivers above level 3.
Widespread flooding occurred in provinces and cities from Hue to Khanh Hoa. There is a high risk of flash floods on rivers and streams and landslides on slopes in provinces and cities from Hue to Khanh Hoa.
Thu Cuc
Source: https://baochinhphu.vn/nguyen-nhan-mua-lu-cuc-doan-tai-mien-trung-dien-bien-cu-the-trong-nhung-ngay-toi-102251120162135166.htm
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