The eastern and southern regions of Thailand will face isolated torrential rains on Saturday and Sunday (August 10-11) due to the intense southwest monsoon across the Andaman Sea and the Gulf of Thailand and the monsoon across the upper North to the low-pressure cell over upper Laos, the Thai Meteorological Department said. 
In its forecast, the department urged residents to beware of the severe conditions that may cause flash floods and water runoffs. 
The affected areas are: 
Saturday: Isolated heavy to very heavy rain&nbsp; 
East: Rayong, Chanthaburi, Trat. 
South: Phetchaburi, Prachuap Khiri Khan, Chumphon, Surat Thani, Ranong, Phangnga, Phuket, Krabi, Trang. 
Sunday: Isolated heavy rain. 
East: Chanthaburi, Trat. 
South: Ranong, Phang Nga, Prachuap Khiri Khan, Chumphon. 
Strong winds could bring waves 2-4 metres high in the upper Andaman Sea, 2-3 metres high in the upper Gulf and above 4 metres in the thundershower areas. 
All ships should proceed with caution, and small boats should stay ashore, the weather department said.

Torrential rains predicted for East, South