The Mae Sai River near the Thai-Myanmar border is forecast to breach banks again by 8 AM on August 2 despite recent level drops, with heavy monsoon rainfall (133-163mm) in Myanmar pushing water levels toward the 397.59m embankment limit. Experts warn of seepage into riverside communities and difficult drainage in areas like Ban Hua Fai and Koh Sai, while the Thai Meteorological Department has issued flood alerts for 18 provinces through August 4 as the monsoon strengthens across the north and northeast.