Thunderstorms and heavy rainfall are forecasted to occur starting from 19 December 2025, 00:30 WIB in parts of Sumatera Barat especially in: 2 X 11 Kayu Tanam, Batang Gasan, Iv Koto Aur Malintang, Lareh Sago Halaban, Luak, Lubuk Basung, Lubuk Sikaping, Malalak, Mapat Tunggul Selatan, Matur, Nan Sabaris, Panti, Pariaman Selatan, Pariaman Tengah, Pariaman Timur, Pariaman Utara, Patamuan, Pelembayan, Sumpur Kudus, Sungai Garingging, Sungai Limau, Tanjung Mutiara, Tanjung Raya, V Koto Kampung Dalam, V Koto Timur, Vii Koto Sungai Sarik, X Koto. 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 19 December 2025, 03:30 WIB.