Thunderstorms and heavy rainfall are forecasted to occur starting from 22 July 2026, 17:40 WITA in parts of Kalimantan Utara especially in: Kayan Hilir, Lumbis, Lumbis Ogong, Malinau Barat, Malinau Selatan Hulu, Malinau Utara, Mentarang, Mentarang Hulu, Muruk Rian, Peso, Peso Hilir, Sebuku, Sei Menggaris, Sembakung Atulai, Sesayap, Tanjung Palas Barat, Tarakan Timur, Tulin Onsoi. 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 22 July 2026, 20:30 WITA.