M5.6 earthquake 141 km E of Iwaki, Japan
A magnitude 5.6 earthquake struck 141 km E of Iwaki, Japan on Mon, Feb 20, 1933, 6:51 PM JST (09:51 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
- 5.6 (Mw, moment), moderate
- Magnitude from
- ISC-GEM global catalog
- Local time
- UTC
- 1933-02-20 09:51:08 UTC
- Depth
- 15.0 km (9.3 mi), shallow
- Epicenter
- 36.960° N, 142.472° E
- Region
- Japan
- 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
- ±0.28
- Depth from
- From location
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.6 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 iscgem905396. Read Fri, Oct 2, 2026, 9:04 AM UTC.