M4.8 earthquake 280 km WSW of Altai, Mongolia
A magnitude 4.8 earthquake struck 280 km WSW of Altai, Mongolia on Sat, Jan 7, 1984, 4:57 AM GMT+6 (22:57 UTC), 33 km (21 mi) below the surface.
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Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.8 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1984-01-06 22:57:42 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 45.450° N, 92.890° E
- Region
- Mongolia
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Magnitude estimates
Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.
| Mag. | Scale | Computed by | Notes |
|---|---|---|---|
| 4.8 | mb, body-wave | USGS National Earthquake Information Center | Preferred · Reviewed · 23 stations |
| 5.2 | Mw, moment | ISC-GEM global catalog | Final · ±0.2 |
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Depth from
- OPERATOR_ASSIGNED
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.8 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 usp000212r (also filed as iscgem560549). Read Sat, Oct 3, 2026, 6:00 AM UTC.