By The Nation
In its third warning issued at 5am on Monday, the department said people should beware of heavy rains causing possible flash floods and lowland drainage floods in the North, the Northeast, the Central, the East, the upper South including Bangkok and its vicinity.
It said the heavy rains would be unleashed by a monsoon trough lying across the lower Central, the upper South and the East coupled with an active low pressure area covering the middle South China Sea.
The low pressure zone is expected to move to the middle of Vietnam by Monday and then on to cover the Northeast, the East, the Central and the North on Tuesday and Wednesday.
Abundant rains are expected over Thailand with isolated heavy to very heavy rains in the North, the Northeast, the East and the Central. Affected areas are as followings:
Monday and Tuesday:
North: Mae Hong Son, Chiang Mai, Chiang Rai, Lamphun, Lampang, Phayao, Nan, Phrae, Uttaradit, Sukhothai, Phitsanulok, Phetchabun, Phichit, Kamphaeng Phet and Tak.
Northeast: Loei, Nong Bua Lam Phu, Nong Khai, Udon Thani, Bueng Kan, Sakon Nakhon, Khon Kaen, Chaiyaphum, Nakhon Ratchasima, Buri Ram, Surin, Si Sa Ket and Ubon Ratchathani.
Central: Nakhon Sawan, Uthai Thani, Chai Nat, Lop Buri, Saraburi, Kanchanaburi, Suphan Buri, Nakhon Prathom and Ratchaburi including Bangkok and its vicinity.
East: Chachoengsao, Nakhon Nayok, Prachin Buri, Sa Kaeo, Chon Buri, Rayong, Chanthaburi and Trat.
South: Phetchaburi, Prachuap Khiri Khan, Chumphon, Surat Thani, Ranong, Phangnga and Phuket.
North: Mae Hong Son, Chiang Mai, Chiang Rai, Lamphun, Lampang, Phayao, Nan, Phrae, Uttaradit and Tak.
Northeast: Loei, Nong Bua Lam Phu, Udon Thani, Khon Kaen, Chaiyaphum and Nakhon Ratchasima.
Central: Nakhon Sawan, Lop Buri, Chai Nat, Uthai Thani, Kanchanaburi, Suphan Buri and Ratchaburi.
East: Chon Buri, Rayong, Chanthaburi and Trat.
South: Ranong, Phangnga and Phuket.