Thunderstorms and heavy rainfall are forecasted to occur starting from 20 September 2026, 15:50 WIB in parts of Sumatera Barat especially in: AKABILURU, DUO KOTO, HARAU, KAPUR IX, LAMPOSI TIGO NAGORI, MAPAT TUNGGUL SELATAN, MATUR, PAYAKUMBUH, PAYAKUMBUH BARAT, PAYAKUMBUH SELATAN, PAYAKUMBUH TIMUR, PAYAKUMBUH UTARA. 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 20 September 2026, 17:50 WIB.