Thunderstorms and heavy rainfall are forecasted to occur starting from 11 December 2025, 18:35 WIB in parts of Sumatera Barat especially in: Batang Gasan, Kinali, Ranah Batahan, Siberut Barat Daya, Siberut Tengah, Sungaiberemas, Tanjung Mutiara. These conditions may lead to reduced visibility, strong winds, and localized flooding. The public is strongly advised to remain vigilant during this period, limit outdoor activities, and take all necessary precautions to ensure safety. Conditions are expected to gradually improve by 11 December 2025, 20:30 WIB.