M8.3 The 1905 Bulnay (Bolnai), Mongolia Earthquake
A magnitude 8.3 earthquake struck on Sun, Jul 23, 1905, 8:53 AM GMT+6:06:36 (02:46 UTC), 15 km (9 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 8.3 (mw), great
- Local time
- UTC
- 1905-07-23 02:46:24 UTC
- Depth
- 15.0 km (9.3 mi), shallow
- Epicenter
- 49.292° N, 96.843° E
- Region
- Mongolia
- 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
- 30.7% of gravity
- Peak ground velocity
- 4.0 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
- ±0.20
- 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: 1 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayMongolia earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem16957865. Read Tue, Sep 22, 2026, 9:34 PM UTC.