Heavy Rain Warning for Bangkok and Upper Thailand
Heavy rain and thunderstorms are forecast across northern, central, and eastern Thailand through August 24, with flash flooding risks in foothill and low-lying areas. Tropical Storm Narra will not directly impact Thailand but rough seas up
On August 23, the Thai Meteorological Department forecasts thunderstorms and heavy rain in northern, upper northeastern, central, and eastern Thailand over the next 24 hours. A monsoon trough is moving across upper northern Thailand and northern Laos, coinciding with Tropical Storm Narra in the Gulf of Tonkin and strong southwest monsoon winds over the Andaman Sea and Gulf of Thailand. The public is urged to be cautious of hazards from heavy and accumulated rainfall, which may cause flash flooding, flash floods, and overflowing banks, particularly in foothill areas and low-lying regions.
Northern seas near the upper Andaman see fairly strong conditions with waves 2-3 meters high, and over 3 meters during thunderstorms. Upper Gulf of Thailand waves reach approximately 2 meters, exceeding 2 meters in thunderstorm areas. Fishermen in the Andaman and Gulf of Thailand are advised to navigate carefully, avoid thunderstorm zones, and small vessels in the upper Andaman should remain ashore during this period. Tropical Storm Narra is expected to move ashore near southern Guangdong, China on August 24-25 and will not enter Thailand, causing no direct impact on Thai weather conditions.
Regional forecasts for Thailand from 6 p.m. today to 6 p.m. tomorrow:
Northern Region: 60% thunderstorms with some heavy rainfall in Mae Hong Son, Chiang Mai, Chiang Rai, Phayao, Nan, Uttaradit, Phitsanulok, Phetchabun, and Tak. Low 22-26°C, high 31-34°C. Southwest wind 10-20 kph.
Upper Northeastern: 40% thunderstorms with some heavy rainfall in Nong Khai, Bueng Kan, and Nakhon Phanom. Low 23-25°C, high 31-33°C. Southwest wind 10-20 kph.
Central Region: 60% thunderstorms with some heavy rainfall in Nakhon Sawan, Uthai Thani, Kanchanaburi, and Ratchaburi. Low 23-25°C, high 31-33°C. Southwest wind 10-25 kph.
Eastern Region: 60% thunderstorms with some heavy rainfall in Nakhon Nayok, Prachuap Khiri Khan, Sa Kaeo, Rayong, Chanthaburi, and Trat. Low 24-27°C, high 31-33°C. Southwest wind 20-35 kph. Seas 2 meters high, exceeding 2 meters in thunderstorm areas.
Southern Region (East Coast): 30% thunderstorms mainly in Phetchaburi, Prachuap Khiri Khan, Chumphon, and Surat Thani. Low 23-26°C, high 31-37°C. From Surat Thani northward: southwest wind 20-35 kph. Waves 1-2 meters, approximately 2 meters offshore, exceeding 2 meters in thunderstorm areas. From Nakhon Si Thammarat southward: southwest wind 15-35 kph. Waves approximately 1 meter, 1-2 meters offshore.
