Weather Advisory
Subject: Storm “RAGASA”
and heavy to very heavy rain in Thailand
No.13 (261/2025)
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At 01.00 p.m.
LST (25 September 2025), tropical storm “RAGASA” over
Guangxi, China was downgrade to the tropical depression. At 04.00 p.m. was
centered in Bac Kan, Vietnam or at latitude 22.0 degrees north and longitude 106.0
degrees east with maximum sustained winds about 55 km./hr. This storm is moving west with a speed of 30 km/hr.
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 upper 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.
The
final advisory is in effect on 25 September 2025, at 05.00 p.m.
(Signed) Sugunyanee Yavinchan
(Miss Sugunyanee
Yavinchan)
Director-General
Thai Meteorological Department