M5.6 earthquake 116 km NNE of Hirara, Japan
A magnitude 5.6 earthquake struck 116 km NNE of Hirara, Japan on Sat, Apr 18, 1981, 11:05 AM JST (02:05 UTC), 92 km (57 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.6 (mb), moderate
- Local time
- UTC
- 1981-04-18 02:05:01 UTC
- Depth
- 92.0 km (57.2 mi), intermediate-depth
- Epicenter
- 25.750° N, 125.798° 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.
- Depth from
- CONSTRAINED_BY_DEPTH_PHASES
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.6 and up: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.3141 km W of Itoman, Japan · 16587 days ago · 117 km deep · 78 km away
- 4.7118 km WSW of Itoman, Japan · 16549 days ago · 76 km deep · 76 km away
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001d74 (also filed as gcmtb041881b, gcmt19810418020501, iscgem628362). Read Wed, Sep 30, 2026, 6:40 PM UTC.