Jakarta, ThedailyID — A magnitude 6.0 earthquake struck Sumba, East Nusa Tenggara, on Sunday morning, October 4, 2026. Several smaller aftershocks followed the main earthquake over the next few hours.
According to Indonesia’s Meteorology, Climatology and Geophysical Agency (BMKG), the main earthquake occurred at 5:55 a.m. Jakarta time. The epicenter was located 10 kilometers south of Kodi, Southwest Sumba, at a depth of 14 kilometers.
The earthquake occurred at coordinates 9.68°S and 118.96°E. Several aftershocks followed just minutes later.
The first aftershock occurred at 5:59 a.m. with a magnitude of 4.4. It was recorded at a depth of 11 kilometers.
At 6:06 a.m., BMKG recorded another earthquake with a magnitude of 3.3. The quake occurred at a depth of 16 kilometers.
A third aftershock followed at 6:08 a.m. It had a magnitude of 3.0 and occurred at a depth of 12 kilometers.
Two more aftershocks occurred at 6:10 a.m. and 6:12 a.m. They registered magnitudes of 2.4 and 3.2, respectively.
Another earthquake occurred at 6:17 a.m. with a magnitude of 2.7 and a depth of 23 kilometers.
At 6:22 a.m., BMKG reported a magnitude 2.0 earthquake about 50 kilometers east of Bima City, West Nusa Tenggara. The location was on the northern side of Sumba.
Seismic activity around Sumba continued into the morning. At 7:47 a.m., BMKG recorded another magnitude 2.2 earthquake at coordinates 9.25°S and 118.93°E.
The earthquake was also located in the northwestern part of Sumba. The series of smaller earthquakes followed the magnitude 6.0 mainshock earlier that morning.
