Daily Forecast Distribution On May 21, 2008 General Situation at 04:00 AM local Time The moderate low pressure trough lies across northern and northeastern Thailand, and southwest monsoon prevails over the Andaman Sea, southern Thailand and the Gulf. These cause abundant rain and isolated heavy fall in upper Thailand. People in northeastern Thailand should beware disaster of heavy rain condition during the period such as Khon Kaen, Maha Sarakham, Roi Et, Kalasin, Surin, Srisaket, Yasothon, Amnat Charoen and Ubon Ratchathani provinces. Weather Forcast For Thailand From 6:00 AM Wednesday To 6:00 AM Thursday. Northern Part Scattered thundershowers mainly in Chiang Rai, Chiang Mai, Tak, Sukhothai, Kamphaengphet, Phichit and Phetchabun. Minimum temperature 21 C. Maximum temperature 34 C. Variable winds 10-25 km/hr. Northeastern Part Fairly widespread thundershowers and isolated heavy rain in Khon Kaen, Maha Sarakham, Roi Et, Kalasin, Surin, Srisaket, Yasothorn, Amnat Charoen and Ubon Ratchathani. Minimum temperature 21C. Maximum temperature 33C. Southwesterly winds 10-30 km/hr. Central Part Scattered thundershowers and isolated heavy rain mainly in Utghai Thani, Kanchanaburi and Ratchaburi. Minimum temperature 24 C. Maximum temperature 35 C. Southwesterly winds 15-30 km/hr. Eastern Part Scattered thundershowers and isolated heavy rain mainly in Chanthaburi and Trat. Minimum temperature 24 C. Maximum temperature 34 C. Southwesterly winds 15-35 km/hr. Wave height 1-2 meters and about 2 meters in the thundershowers areas. Southern Part (East Coast) Scattered thundershowers mostly in Phetchaburi, Prachuap Khiri Khan, Chumphon, Surat Thani, Nakhon Si Thammarat and Songkhla. Minimum temperature 25 C. Maximum temperature 34 C. Southwesterly winds 15-35 km/hr. Wave height 1-2 meters. Southern Part (West Coast) Scattered thundershowers with isolated heavy rain in Ranong and Phangnga. Minimum temperature 24 C. Maximum temperature 34 C. Southwesterly winds 15-35 km/hr. Wave height 1-2 meters and about 2 meters in the thundershowers areas. Metropolitan Scattered thundershowers and isolated heavy rain mainly in the afternoon to evening. Minimum temperature 25 C. Maximum temperature 35 C. Southwesterly winds 15-30 km/hr. Thai Meteorological department (02) 398-9874