Weather Advisory
Subject: Heavy to very heavy rains in
Thailand,
Strong Wind-Waves in the upper Andaman Sea
No. 15 (75/2026)
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During 20–21 May 2026 the rather strong southwest monsoon prevails
over the Andaman Sea, Thailand and the Gulf while the low-pressure cell covers
the coast of upper Vietnam. More rain and isolated heavy to very heavy rains
are forecast in the western part of country, the North, the upper Northeast,
the Central, the East and the South (west
coast) regions. People in the areas should beware of heavy to
very heavy rains and accumulations that may
cause flash flood and overflows, especially along foothills near waterways and lowlands.
The rather strong wind forces the waves in
the upper Andaman Sea up to be 2–3 meters high and above 3 meters high in
thundershowers. In the lower Andaman Sea and the upper Gulf, the waves are
expected about 2 meters high and above 2 meters high in thundershowers. All ships should proceed with caution and keep off
thundershowers, small boats in the upper Andaman Sea keep ashore.
This
advisory is in effect on 20 May 2026, at 5.00 a.m.
This next issue will be on 20 May 2026, at 5.00 p.m.
(Signed) Sugunyanee Yavinchan
(Miss Sugunyanee Yavinchan)
Director-General
Thai Meteorological Department