Meteorological Department Issues Alert No. 15: Southwest Monsoon Intensifying with Heavy Rainfall
Thailand's Meteorological Department warns of heavy to very heavy rainfall across 56 provinces through May 21 as the southwest monsoon intensifies, with risks of flash flooding in hillside and low-lying areas and rough seas in the Andaman S
On May 20, 2569, the Thai Meteorological Department issued alert No. 15 regarding heavy to very heavy rainfall across Thailand and strong winds in the Andaman Sea (affecting through May 21). The alert indicates that during May 20-21, rainfall will increase significantly with heavy to very heavy rain expected mainly on the western side of the country, including the northern, upper northeastern, central, eastern, and western southern regions due to an intensifying southwest monsoon covering the Andaman Sea, Thailand, and the Gulf of Thailand, combined with a low-pressure system over northern Vietnam's coast.
Residents are urged to be cautious of heavy rainfall and accumulated water, which may cause flash flooding and flash floods, especially in hillside areas near water channels and low-lying areas. Approximately 56 provinces are expected to experience heavy rainfall.
Sea conditions: The Andaman Sea and Gulf of Thailand face moderately strong waves. The upper Andaman (from Phuket northward) has waves 2-3 meters high, with thunderstorm areas exceeding 3 meters. The lower Andaman (from Krabi southward) and upper Gulf of Thailand have waves approximately 2 meters high, with thunderstorm areas exceeding 2 meters.
Fishermen are advised to exercise caution and avoid sailing in thunderstorm areas. Small boats in the upper Andaman should remain ashore during this period.
The public is encouraged to monitor updates from the Meteorological Department via their website (http://www.tmd.go.th) or by calling 0-2399-4012-13 and 1182 (24-hour service). The next alert will be issued on May 20 at 5:00 PM.
