Weather
Advisory
Subject:
Heavy to Very Heavy Rain in upper Thailand
No.4
(171/2026)
----------------------------
During 29
August – 2 September 2026, the monsoon trough will move to lies
across the North and the upper Northeast into the active low pressure cell over
the coast of upper Vietnam and the Gulf of Tonkin. Meanwhile, the rather strong
southwest monsoon prevails over the Andaman Sea, Thailand and the Gulf with more
rain and isolated heavy to very heavy rains mostly in the upper North, the
upper Northeast and the East including the windward side. People in the country
should beware of heavy to very heavy rains and accumulation that may cause
flash floods, overflows and landslides especially along the waterways near
foothills and lowlands.
The rather
strong wind forces the waves in the upper Andaman Sea and the upper Gulf up to 2-3
meters high and above 3 meters high in thundershowers. In the lower Andaman
Sea, the waves are expected about 2 meters high and above 2 meters high in
thundershowers. All ships in the Andaman Sea and the Gulf should proceed with
caution and keep off thundershowers, small boats in the upper Andaman Sea and
the upper Gulf keep ashore.
The advisory is in effect on 28 August
2026, at 5.00 a.m.
This next issue will be on 28 August 2026, at 5.00 p.m.
(Signed) Sugunyanee
Yavinchan
(Miss
Sugunyanee Yavinchan)
Director-General
Thai
Meteorological Department