Thunderstorms and heavy rainfall are forecasted to occur starting from 20 December 2025, 03:30 WITA in parts of Kalimantan Timur especially in: Babulu, Balikpapan Barat, Balikpapan Kota, Balikpapan Selatan, Balikpapan Tengah, Balikpapan Timur, Balikpapan Utara, Barong Tongkok, Batu Engau, Batu Sopang, Bongan, Damai, Jempang, Kenohan, Kota Bangun, Kuaro, Laham, Linggang Bigung, Loa Janan, Loa Kulu, Long Apari, Long Bagun, Long Hubung, Long Ikis, Long Iram, Long Kali, Long Pahangai, Melak, Mook Manaar Bulatn, Muara Jawa, Muara Komam, Muara Lawa, Muara Muntai, Muara Pahu, Muara Samu, Muara Wis, Nyuatan, Paser Belengkong, Penajam, Penyinggahan, Samboja, Sekolaq Darat, Sepaku, Siluq Ngurai, Tabang, Tanah Grogot, Tanjung Harapan, Tenggarong Seberang, Tering, Waru. 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, 06:00 WITA.