Heavy Rain Risk Area
The southwest monsoon prevails over the Andaman Sea, Thailand and the Gulf while the southerly and the southeasterly wind prevails over the lower Northeast, the East and the Gulf. The high-pressure system from China that has already extended over upper Vietnam, it is expected to move cover the upper Northeastern region tonight (October 4, 2026) with thundershowers and gusty wind including lightning strikes in the upper country and isolated heavy rains in the lower South.
For the Andaman Sea and the Gulf, waves will be higher than 2 meters high in thundershower areas.
In addition, during 9-13 October 2026, the another high pressure system from China will extend to cover the Northeast and the South China Sea leading to the monsoon trough move down to lies across the East, the upper South. Meanwhile the moderate southwest monsoon prevailing over the Andaman Sea, Thailand and the Gulf. More rain with isolated heavy to very heavy rains are forecast in the East, the Central including Bangkok and vicinity and the South.
People in the country should beware of thundershowers with gusty wind and heavy rains. In addition, people should avoid staying in open areas, under large trees, or near unstable billboards.
All ships in the Andaman Sea and the Gulf should keep off thundershowers.
During this period, people are advised to closely monitor weather forecasts and people in the affected areas should beware of heavy to very heavy rains and accumulated rains that may cause flash floods, overflows and landslides especially along the waterways near foothills and lowlands.
Varoitus voimassa su klo 14:00 - ma klo 2:00
