Tropical Depression and heavy to very heavy rain in Thailand No.1 (204/2025)

Weather Advisory

Subject: Tropical Depression

and heavy to very heavy rain in Thailand

No.1 (204/2025)

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            At 4.00 p.m. LST (22 August 2025), tropical depression over the Philippines was centered at latitude 17.0 degrees north and longitude 121.0 degrees east with maximum sustained winds about 55 km./hr. This storm is moving west-northwest with a speed of 20 km/hr. It is expected to move into the upper South China Sea by tomorrow (23 August) and is likely to intensify into a tropical storm. During 25-26 August, the storm is forecast to make landfall over upper Vietnam and upper Loas. Meanwhile, the southwest monsoon prevailing over the Andaman Sea, Thailand and the Gulf will strengthen. More rain and isolated heavy to very heavy rain with strong winds in the North, the upper Northeast, the Central and the East including Bangkok and vicinity during 24–27 August. People in the country should beware of heavy to very heavy rain and accumulation that may cause flash floods and overflows especially along the waterways near foothills and lowlands.

The wind force waves in the upper Andaman Sea up to 2-3 meters high and above 3 meters high in thundershowers. All ships in the Andaman Sea should proceed with caution. Small boats in the upper Andaman Sea should keep ashore

This advisory is in effect on 22 August 2025, at 5.00 p.m.

This next issue will be on 22 August  2025, at 11.00 p.m.

            (Signed)  Sugunyanee Yavinchan

              (Miss Sugunyanee Yavinchan)

               Director-General

                     Thai Meteorological Department