M4.5 earthquake 151 km SSW of ?yama, Japan
A magnitude 4.5 earthquake struck 151 km SSW of ?yama, Japan on Sun, Jul 30, 1978, 11:49 PM JST (14:49 UTC), 345 km (214 mi) below the surface.
A larger quake followed: M5.1 123 km S of ?yama, 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
- 1978-07-30 14:49:11 UTC
- Depth
- 345.0 km (214.4 mi), deep
- Epicenter
- 33.281° N, 137.803° 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.
- Stations used
- 45
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 1 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 usp0000vv4. Read Tue, Sep 22, 2026, 9:43 PM UTC.