Thunderstorms and heavy rainfall are forecasted to occur starting from 06 April 2026, 12:50 WIB in parts of Sumatera Utara especially in: Adian Koting, Afulu, Alasa, Alasa Talumuzoi, Amandraya, Andam Dewi, Aramo, Arse, Baktiraja, Bandar Khalifah, Barus Utara, Barusjahe, Batang Kuis, Bawolato, Berastagi, Beringin, Boronadu, Botomuzoi, Deli Tua, Dolat Rayat, Dolok Masihul, Dolok Panribuan, Dolok Sanggul, Fanayama, Galang, Garoga, Gido, Girsang Sipangan Bolon, Gomo, Gunung Meriah, Gunungsitoli, Gunungsitoli Alo'Oa, Gunungsitoli Barat, Gunungsitoli Idanoi, Gunungsitoli Selatan, Gunungsitoli Utara, Hamparan Perak, Harian, Hiliduho, Hilimegai, Hilisalawa'Ahe, Hiliserangkai, Huruna, Idanogawo, Idanotae, Juhar, Kabanjahe, Kerajaan, Kolang, Kuala, Kutalimbaru, Labuhan Deli, Lahewa, Lahewa Timur, Lahomi, Lahusa, Lintong Nihuta, Lolofitu Moi, Lolomatua, Lolowau, Lotu, Luahagundre Maniamolo, Lubuk Pakam, Ma'U, Mandrehe, Mandrehe Barat, Mandrehe Utara, Manduamas, Maniamolo, Mazino, Mazo, Medan Amplas, Medan Area, Medan Barat, Medan Baru, Medan Belawan, Medan Deli, Medan Denai, Medan Helvetia, Medan Johor, Medan Kota, Medan Labuhan, Medan Maimun, Medan Marelan, Medan Petisah, Medan Polonia, Medan Selayang, Medan Sunggal, Medan Tembung, Medang Deras, Merdeka, Merek, Moro'O, Naman Teran, Namohalu Esiwa, Namorambe, O'O'U, Onan Ganjang, Onohazumba, Onolalu, Pagar Merbau, Pagaran, Pagindar, Pahae Jae, Pahae Julu, Pakkat, Pandan, Pangaribuan, Pantai Cermin, Pantai Labu, Paranginan, Parbuluan, Parlilitan, Parmonangan, Pasaribu Tobing, Patumbak, Pegagan Hilir, Pegajahan, Perbaungan, Percut Sei Tuan, Pergetteng Getteng Sengkut, Pollung, Purba Tua, Raya Kahean, Saipar Dolok Hole, Salak, Sarudik, Sawo, Sei Bamban, Sei Bingei, Sei Suka, Sei. Rampah, Serba Jadi, Sianjar Mula Mula, Siatas Barita, Sibolangit, Sibolga Kota, Sibolga Sambas, Sibolga Selatan, Sibolga Utara, Siborong-Borong, Sidikalang, Sidua'Ori, Siempat Nempu Hulu, Siempat Rube, Sijamapolang, Silahisabungan, Simangumban, Sipahutar, Sipoholon, Sirandorung, Sirombu, Sitahuis, Sitelu Tali Urang Jehe, Sitinjo, Sitio-Tio, Sitolu Ori, Sogae'Adu, Somambawa, Somolo-Molo, Sorkam, Sorkam Barat, Sosor Gadong, Stm Hulu, Sumbul, Sunggal, Susua, Tanah Pinem, Tanjung Beringin, Tanjung Morawa, Tapian Nauli, Tarabintang, Tarutung, Tebing Tinggi, Teluk Dalam, Teluk Mengkudu, Tigalingga, Tigapanah, Tinada, Toma, Tugala Oyo, Tuhemberua, Tukka, Ulu Idanotae, Ulu Moro'O, Ulugawo, Ulunoyo, Ulususua, Umbunasi. 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 06 April 2026, 15:50 WIB.