M5.5 earthquake 13 km S of Hasaki, Japan
A magnitude 5.5 earthquake struck 13 km S of Hasaki, Japan on Thu, May 1, 1930, 1:20 PM JST (04:20 UTC), 35 km (22 mi) below the surface.
A larger quake followed: M6.1 34 km E of ?arai, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.5 (mw), moderate
- Local time
- UTC
- 1930-05-01 04:20:29 UTC
- Depth
- 35.0 km (21.7 mi), shallow
- Epicenter
- 35.614° N, 140.830° 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
- ±0.20
- 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 1 in the 30 days before it.
After
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem907347. Read Wed, Sep 30, 2026, 9:36 PM UTC.