Thunderstorms and heavy rainfall are forecasted to occur starting from 12 November 2025, 22:20 WIB in parts of Riau especially in: Bagan Sinembah, Bangkinang Kota, Gunung Sahilan, Kampar, Kampar Kiri, Kampar Kiri Hilir, Kampar Kiri Hulu, Kampar Kiri Tengah, Kampar Timur, Langgam, Logas Tanah Darat, Pangkalan Kuras, Simpang Kanan, Singingi Hilir, Tambang, Tampan, Tapung, Xiii Koto Kampar. 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 13 November 2025, 01:00 WIB.