North Sumatra province has been hit by floods, landslides, and extreme weather since November 22, 2025, causing deaths and infrastructure damage. The Regional Disaster Management Agency (BPBD) of North Sumatra deploys teams to affected areas like South Tapanuli to Mandailing Natal. BNPB states the disaster was triggered by Tropical Cyclone KOTO and Cyclone Seed 95B.
Hydrometeorological disasters struck seven districts/cities in North Sumatra due to heavy rain from November 22 to 25, 2025. Affected areas include South Tapanuli, Central Tapanuli, Sibolga City, Mandailing Natal, North Tapanuli, South Nias, and Padangsidimpuan.
According to BPBD North Sumatra, as of November 26, 2025, at 08:00 WIB, there were 13 deaths, with nine in South Tapanuli (six in Batangtoru Subdistrict, one in Sipirok, and two in West Angkola) and four in Central Tapanuli, Mardame Village, Sitahuis Subdistrict, buried by landslides. However, BNPB reports eight deaths in four districts: Sibolga, North Tapanuli, Central Tapanuli, and South Tapanuli. There are 37 injuries, three missing in South Tapanuli, and one in Padangsidimpuan.
Damage includes 330 houses in South Tapanuli (12 heavily, six moderately, 312 lightly damaged) and one school damaged. In Mandailing Natal, 561 families or 2,244 people are evacuated, 13 houses heavily damaged, one school damaged, and 85 hectares of farmland flooded. North Tapanuli reports 19 families evacuated, five houses heavily damaged, 64 lightly, four road sections damaged, and one bridge cut. South Nias has one house heavily damaged and one road disrupted, while Padangsidimpuan reports 220 people evacuated.
Head of Emergency Handling Division of BPBD North Sumatra, Sri Wahyuni Pancasilawati, stated, "As of 08:00 WIB this morning, there are 13 people declared dead in seven districts/cities." BPBD deploys two teams with 14 personnel to South Tapanuli, 17 to Central Tapanuli and Sibolga (though delayed), and three teams to Mandailing Natal, carrying logistics and equipment.
BNPB's Abdul Muhari explained that the extreme weather was triggered by Tropical Cyclone KOTO in the Sulu Sea and Cyclone Seed 95B in the Malacca Strait, forming widespread convective clouds and heavy rain. Hundreds of joint personnel are deployed for evacuation and sheltering. Potential extreme rain persists for the next 24 hours, with close monitoring in Tapanuli Raya.
