M6.0 earthquake 251 km WSW of Altai, Mongolia
A magnitude 6.0 earthquake struck 251 km WSW of Altai, Mongolia on Tue, Sep 21, 1920, 5:35 AM GMT+6 (23:35 UTC), 10 km (6 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.0 (mw), strong
- Local time
- UTC
- 1920-09-20 23:35:30 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 45.373° N, 93.350° E
- Region
- Mongolia
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
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
- ±0.20
- 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 iscgem912621. Read Mon, Sep 21, 2026, 3:27 PM UTC.