Weather Advisory
Subject: Heavy to very heavy rains in
Thailand,
Strong Wind-Waves in the upper Andaman Sea
No. 16 (76/2026)
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During
20–21 May 2026 the rather strong southwest monsoon prevails over
the upper Andaman Sea and Thailand while the low-pressure cell covers the lower
North and the upper Northeast regions. Continuous rainfalls and isolated heavy
rains are forecast in the country while isolated very heavy rains are possible in
the North, the upper Northeast and the South (west coast) regions. People
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 p.m.
This next issue will be on 21 May 2026, at 5.00 a.m.
(Signed) Sugunyanee Yavinchan
(Miss Sugunyanee Yavinchan)
Director-General
Thai Meteorological Department