Thunderstorms and heavy rainfall are forecasted to occur starting from 15 May 2026, 17:30 WIB in parts of Sumatera Barat especially in: Ampek Nagari, Batang Anai, Bayang, Bungus Teluk Kabung, Gunungtuleh, Iv Koto Aur Malintang, Kinali, Koto Tangah, Koto Xi Tarusan, Kuranji, Lubuk Basung, Lubuk Kilangan, Mapat Tunggul Selatan, Rao, Rao Selatan, Rao Utara, Sungai Garingging, Talamau, Tanjung Raya. 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 15 May 2026, 19:30 WIB.