Attachments
Key Messages
Key messages for this weekly report are presented below.
Rainfall monitoring and forecast
- In the period of 16 – 22 July 2024, light to heavy rainfall has been observed over the LMB. Especially, heavy to very heavy rainfall has been observed over the LMB including Nong Khai, Muong Mai, Paksane, Khong Chiam, Saravanne, Kratie…
- From 23 – 29 July 2024, the accumulated rainfall over the entire Lower Mekong Basin is distributed with light to heavy rain. Moderate rainfall is expected in the central parts of the LMB, the northeastern part of Cambodia, and the 3S Basin of Sekong, Sesan, and Srepok. Heavy rainfall is likely to occur in certain areas such as Paksane, Thakhek, and Pakse (Lao PDR); and the upper part of the 3S Basin (Sekong Basin).
Water level monitoring and forecast
- At 22 key monitoring stations along the Mekong mainstream from 16 – 22 July 2024, water levels are normal, and the flow threshold (PMFM 6C) are under normal conditions. It is also the same condition for Tan Chau and Chau Doc monitoring stations, which are significantly influenced by sea tidal fluctuation.
- In the period of 23 – 27 July 2024, Water levels at all station are forecasted to be increasing. At Tan Chau and Chau Doc stations, the water levels are predicted to be also fluctuated, resulting from the influence of sea tidal patterns. Almost all stations from Vientiane stations downward are expected to reach above their long-term average (LTAs).
Drought condition and forecast
- During 16-22 July 2024, the LMB was generally normal in all parts of the region. No significant impact of drought was detected for the current work.
- From July to September 2024, it is expected to bring drought conditions to certain areas of the LMB. In July, eastern Cambodia, 3S area, and northern Lao PDR are the most severe areas. In August, severe and exceptional droughts are forecasted for the upper part of the LMB. Other areas are likely normal or wet. In September, moderate to severe drought is forecasted for the northern Cambodia and 3S area, while other areas are likely normal or wet.