Warning "" No. 20 (336/2551) Time Issued : September 15, 2008 A trough of rather active low pressure lies across the North and the Northeast through the low pressure cell in the coast of central Vietnam, and the rather strong southwest monsoon remains over the Andaman Sea, the South and the Gulf. Abundant rain is likely over the North and the Northeast with heavy rains in many areas such as Mae Hong Son, Chiang Rai, Chiang Mai, Phayao, Nan, Lamphun, Lampang, Phrae, Uttaradit, Tak, Sukhothai, Phitsanulok, Phichit, Phetchabun, Sakon Nakhon, Mukdahan, Maha Sarakham, Kalasin, Roi Et, Yasothon, Amnat Charoen, Si Saket and Ubon Ratchathani. People in lowland and foothill of these areas should beware of flooding conditions during 1-2 days. Wave height in the Andaman Sea and the Gulf is likely about 2 meters, and all ships should proceed with caution during 15-16 September 2008. Thai Meteorological department (02) 398-9874