Weather
Advisory
Subject:
Heavy to Very Heavy Rains in Thailand
No.1
(260/2026)
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During
18–20 October 2026, continuous rain with isolated heavy to
very heavy rain is expected over the South and the East. After that, during
21–25 October 2026, rainfall will increase, bringing isolated heavy to very
heavy rains along with gusty winds to the lower Northeast, the Central region
including Bangkok and vicinity, the East, and the upper South.
During
this period, people are advised to closely monitor weather forecasts and people
in the affected areas should beware of gusty wind and heavy to very heavy rains
and accumulated rainfall that may cause flash floods, overflows and landslides
especially along the waterways near foothills and lowlands.
This
is because during the first period the monsoon trough will lie across the lower
South while the southwest monsoon prevails over the lower Andaman Sea. After
that, the monsoon trough will move up to lie across the upper South, the upper
Gulf and the East. Meanwhile another high-pressure system from China will
extend to cover the upper North, the upper Northeast and the South China Sea.
The
winds force the wave in the Andaman Sea and the Gulf up to above 3 meters high
in thundershowers. All ships should proceed with caution and keep off
thundershowers.
The advisory is in effect on 17 October
2026, at 5.00 a.m.
This next issue will be on 17 October 2026, at 5.00 p.m.
(Signed)
Nattawut
Dandee
(Mr. Nattawut Dandee)
Deputy Director-General
Acting Director-General, Thai Meteorological Department