| | General Situation | at 22:00 September 21, 2021 | | | | | | |  The low-pressure covers the Central with the monsoon trough lies across the Central, the East and the lower Northwest regions. The southwest monsoon prevails over the Andaman Sea, the South and the Gulf of Thailand. Thundershowers will be likely over the country with isolated very heavy rains in the Central, the South (west coast) including Bangkok and its vicinity and isolated heavy rain in the North, the Northeast and the South (east coast). People in the risk areas should beware of severe rain and its accumulation that may cause over flows and flash flood.
The moderate southwest monsoon prevails over the Andaman Sea and the Gulf of Thailand, about 2 meters high in the Andaman Sea and the upper Gulf of Thailand, 1-2 meters high in the lower Gulf of Thailand, and above 2 meters high in thundershowers. All ships proceed with caution and keep off thundershowers.
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| | Bangkok Metropolis and Vicinity Forecast  | From 23:00 today To 23:00 tomorrow | | | | | | | | Fairly widespread thundershowers and isolated heavy to very heavy rains.
Minimum temperature 23-24 °C. Maximum temperature 30-32 °C.
Southwesterly winds 10-20 km/hr.
| | | | | | | | More Details | Issued Date September 21, 2021 | | |
| | 7 days Weather Forecast | September 21, 2021 - September 27, 2021 | | | | | | | During 21 - 24 Sep, the monsoon trough lies across the lower North, the Central, the East and the Northeast. The strengthening southwest monsoon prevails over the Andaman Sea, Thailand and the Gulf of thailand. Thundershowers with isolated heavy to very heavy rains are likely over the country. During 25 - 27 Sep, the active low pressure cell over the South China Sea is forecast to move to middle Vietnam as well as move follow the monsson trough lying across the Cental, the East and the lower Northeast. Continuous rains with isolated heavy to very heavy rain remains over the country.
The moderate winds will rise the wave in the Andaman Sea and the upper Gulf up to about 2 meters, 1-2 meters in the lower Gulf while above 2 meters in thundershowers throughout the period.
Cautions
People over the risk areas in the North, the Northeast, the Central, the East and the South should beware of the severe conditions. All ships should proceed with caution and keep away from thundershowers areas. | | | | | | | | | Issued Date September 21, 2021 | | |
