M7.3 earthquake 148 km ESE of Altay, China
A magnitude 7.3 earthquake struck 148 km ESE of Altay, China on Tue, Aug 18, 1931, 8:21 PM GMT+6 (14:21 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
- 7.3 (mw), major
- Local time
- UTC
- 1931-08-18 14:21:04 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 47.254° N, 89.898° E
- Region
- China
- Strongest shaking
- VIII, severe 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
- VIII, severe shaking
- Peak ground acceleration
- 31.5% of gravity
- Peak ground velocity
- 3.6 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
- ±0.47
- 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: 1 in the 60 days after this one and 3 in the 30 days before it.
After
Before
Earthquakes todayChina earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem906951. Read Tue, Sep 22, 2026, 7:23 AM UTC.