Weather Advisory
Subject: Storm “RAGASA”
and heavy to very heavy rain in Thailand
No.10 (258/2025)
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At 07.00 p.m. LST (24 September
2025), typhoon “RAGASA”, made landfall over the south of Guangdong, China. At
10.00 p.m. was centered at latitude 21.9 degrees north and
longitude 110.1 degrees east with
maximum sustained winds about 140 km./hr.
This storm is moving west with a speed of 20 km/hr. It is expected to move into the Gulf of Tonkin on 25 September
2025. It
is expected to weaken into tropical storm before making landfall over upper
Vietnam. Storm “RAGASA” is forecast to downgrade rapidly due to the extending
of the high-pressure system of China during 25-26 September. This storm is not
move to Thailand.
The
storm “RAGASA” effects to the monsoon through which lie across the North and
the upper Northeast and southwest monsoon which prevail over the Thailand more
strength. Heavy to very heavy rain will occur in the North, the Northeast, the
Central and the East during 25-26 September 2025. People in the country should beware of heavy
to very heavy rain and accumulation that may cause flash floods and overflows
especially along the waterways near foothills and lowlands. The wind force
waves in the upper Andaman Sea up to 2-3 meters high and above 3 meters high in
thundershowers. All ships in the Andaman Sea should proceed with caution. Small
boats in the upper Andaman Sea should keep ashore during 25-26
September 2025.
This
advisory is in effect on 24 September 2025, at 11.00 p.m.
This
next issue will be on 25 September 2025, at 05.00 a.m.
(Signed) Sugunyanee Yavinchan
(Miss Sugunyanee
Yavinchan)
Director-General
Thai Meteorological Department