M4.5 earthquake 15 km WSW of Hakuba, Japan
A magnitude 4.5 earthquake struck 15 km WSW of Hakuba, Japan on Fri, Aug 14, 1987, 11:59 AM JST (02:59 UTC), 205 km (127 mi) below the surface.
A larger quake followed: M4.6 11 km NNE of Iiyama, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.5 (mb), light
- Local time
- UTC
- 1987-08-14 02:59:59 UTC
- Depth
- 204.6 km (127.1 mi), intermediate-depth
- Epicenter
- 36.642° N, 137.707° 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 1.5 and up: 2 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00037gx. Read Tue, Sep 22, 2026, 9:42 AM UTC.