M4.9 earthquake 14 km E of Iwaki, Japan
A magnitude 4.9 earthquake struck 14 km E of Iwaki, Japan on Fri, Oct 3, 1980, 2:47 AM JST (17:47 UTC), 66 km (41 mi) below the surface.
A larger quake followed: M5.2 25 km E of Ōarai, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.9 (mb), light
- Local time
- UTC
- 1980-10-02 17:47:42 UTC
- Depth
- 66.0 km (41.0 mi), shallow
- Epicenter
- 37.049° N, 141.051° 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
- 39
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.9 and up: 3 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 usp0001a2a. Read Tue, Sep 22, 2026, 8:59 PM UTC.