Thunderstorms and heavy rainfall are forecasted to occur starting from 20 December 2025, 01:00 WITA in parts of Kalimantan Selatan especially in: Amuntai Selatan, Amuntai Tengah, Amuntai Utara, Angkinang, Angsana, Babirik, Bakumpai, Banjang, Banua Lawas, Barabai, Batang Alai Selatan, Batang Alai Timur, Batang Alai Utara, Batu Benawa, Batu Mandi, Bintang Ara, Candi Laras Utara, Daha Barat, Daha Selatan, Daha Utara, Danau Panggang, Halong, Hampang, Hantakan, Haruai, Haruyan, Haur Gading, Kandangan, Kelua, Kelumpang Barat, Kelumpang Hulu, Kuranji, Kuripan, Kusan Hulu, Labuan Amas Selatan, Labuan Amas Utara, Lampihong, Limpasu, Loksado, Mantewe, Muara Harus, Murung Pudak, Padang Batung, Paminggir, Pamukan Barat, Pamukan Selatan, Pamukan Utara, Pandawan, Paringin, Paringin Selatan, Pugaan, Sampanahan, Satui, Simpang Empat, Sungai Pandan, Sungai Tabukan, Sungaidurian, Tabukan, Tanjung, Tanta, Tebing Tinggi, Telaga Langsat. 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 December 2025, 04:00 WITA.