BMKG Weather Forecast for Saturday, 20 June 2026: Heavy Rain Alert for North Sumatra and South Sulawesi
The Meteorology, Climatology and Geophysics Agency (BMKG) has issued an early warning regarding the potential for extreme weather forecast to hit several regions of Indonesia on Saturday, 20 June 2026. Today’s weather phenomena are triggered by the emergence of a cyclone seed and cyclonic circulation affecting the pattern of air mass convergence.
Based on the latest atmospheric dynamics analysis, the BMKG weather forecast has identified the presence of Tropical Cyclone Seed 92W, which is predicted to form in the Pacific Ocean east of the Philippines. This system creates elongated areas of convergence and confluence, significantly increasing the growth of rain clouds.
In addition, BMKG monitoring indicates a cyclonic circulation in the Indian Ocean west of Sumatra. The combination of these two atmospheric systems strengthens the potential for rain of varying intensity across most of Indonesia.
North Sumatra and South Sulawesi have been asked to exercise extra vigilance against the potential for heavy to very heavy rainfall that could trigger hydrometeorological disasters.
The public is urged to be aware of the impacts of high rainfall, such as flooding, landslides, waterlogging, and fallen trees. Areas with steep topography or river basins are the most vulnerable points to this extreme weather.
BMKG recommends independent mitigation measures, including avoiding outdoor activities during heavy rain accompanied by lightning, and staying away from landslide-prone areas and large trees at risk of falling.
BMKG reminds transport operators, whether by land, sea, or air, to continuously monitor weather information updates regularly. Road users are expected to be cautious of reduced visibility during heavy rain, while fishermen are asked to be alert to the potential for high waves around the cyclonic circulation area.
Official and up-to-date information can be accessed via the official BMKG info website or verified social media channels to ensure safety and smooth daily activities amidst dynamic weather conditions.