M6.6 earthquake 249 km NW of Sabang, Indonesia
A magnitude 6.6 earthquake struck 249 km NW of Sabang, Indonesia on Sat, Mar 5, 1921, 1:31 PM GMT+7:07:12 (06:24 UTC), 20 km (12 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.6 (mw), strong
- Local time
- UTC
- 1921-03-05 06:24:18 UTC
- Depth
- 20.0 km (12.4 mi), shallow
- Epicenter
- 7.401° N, 93.638° E
- Region
- Indonesia
- Strongest shaking
- VII, very strong shaking
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Shaking
The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.
- Strongest estimated
- VII, very strong shaking
- Peak ground acceleration
- 25.9% of gravity
- Peak ground velocity
- 3.3 cm/s
- Map
- Automatic
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Magnitude uncertainty
- ±0.59
- Depth from
- From location
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.5 and up: 0 in the 60 days after this one and 0 in the 30 days before it.
None recorded.
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem912177. Read Tue, Sep 22, 2026, 5:39 AM UTC.