M6.4 earthquake in Indonesia on October 28, 2025

A magnitude 6.4 earthquake struck on October 28, 2025 at 14:40 UTC. According to USGS the epicenter was 389 km southeast of Ambon City, at a depth of 142 km. The focus was at intermediate depth, which softens the shaking at the surface compared with a shallow quake of the same size.

6.4magnitude
142 kmdepth
14:40time UTC
greenUSGS alert
Live earthquake map →

Key facts

17 people reported feeling it to USGS. The USGS PAGER system issued a green alert, expecting little impact.

Nearest cities

  • Ambon City (Indonesia)389 km
  • Dili (Timor-Leste)529 km
  • Sorong (Indonesia)662 km
  • Timika (Indonesia)776 km
  • Manokwari (Indonesia)791 km

Did you feel an earthquake?

Report it to seismologists. These reports help work out quickly where the shaking was strongest. It takes a minute.

Report to USGS (Did You Feel It?)Report to EMSC (LastQuake)

Aftershocks

Since then USGS has recorded 60 quakes of magnitude 4.5 or more within 150 km, the strongest M6.2.

  • M6.2 · May 14, 17:53 UTC75 km
  • M5.9 · Sep 11, 11:56 UTC131 km
  • M5.7 · Feb 6, 21:20 UTC111 km
  • M5.2 · Dec 7, 04:55 UTC118 km
  • M5.1 · Jun 27, 14:50 UTC43 km
  • M5.1 · Jan 25, 06:22 UTC86 km
  • M5.1 · Jan 21, 05:49 UTC49 km
  • M5.1 · Jan 12, 21:59 UTC145 km

Regional history

Since 1976 there have been 85 earthquakes of magnitude 6 or more within 300 km. The strongest was M7.6 (January 9, 2023).

  • M7.6 · January 9, 202340 km
  • M7.6 · January 27, 2006247 km
  • M7.3 · December 29, 2021282 km
  • M7.3 · December 20, 199247 km
  • M7.3 · November 24, 1983219 km

See also

Live earthquake mapAll earthquakes todayEarthquakes in IndonesiaWeather in Ambon CityEvent details at USGS

Source: USGS Earthquake Hazards Program (public domain). Seismologists may still revise the data. Data from Jan 15, 22:46 UTC.