Tropical Cyclone Seeds 91S: Indonesia’s BMKG Urges Calm
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BMKG Monitors Tropical Cyclone 91S, Warns of Increased Rainfall in Sumatra
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Sibolga, Indonesia – December 10, 2025 – The Meteorology, Climatology and Geophysics Agency (BMKG) is closely monitoring Tropical Cyclone 91S in the Indian Ocean west of Lampung Province, Indonesia, and has issued warnings for potential increased rainfall across parts of Sumatra.
Cyclone 91S: Current Status and Potential Impacts
According to BMKG analysis, Tropical Cyclone 91S currently poses an indirect threat to rainfall intensity in several regions of Sumatra. The agency reports active atmospheric dynamics are already influencing rainfall patterns in the area, and the cyclone could exacerbate these conditions.
Teuku Faisal Fathani, head of BMKG, urged the public to remain calm but vigilant. He emphasized the potential for moderate to heavy rainfall in Aceh, North Sumatra, West Sumatra, Bengkulu, and Lampung provinces. The BMKG is prioritizing effective communication and collaboration with all relevant parties to mitigate risks and ensure public safety, as stated by Andri, a BMKG spokesperson.
BMKG’s Ongoing Monitoring and information Dissemination
BMKG is committed to providing continuous updates on the development of Cyclone 91S. This includes issuing high wave warnings, daily weather information, and week-long weather forecasts through all official BMKG channels. The agency strongly advises the public to regularly consult these official sources for the latest information.
Official BMKG Channels: