M4.9 earthquake 7 km SSE of Hasaki, Japan
A magnitude 4.9 earthquake struck 7 km SSE of Hasaki, Japan on Sat, Oct 13, 1979, 9:45 PM JST (12:45 UTC), 32 km (20 mi) below the surface.
A larger quake followed: M5.5 29 km ESE of Katsuura, 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, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1979-10-13 12:45:28 UTC
- Depth
- 32.0 km (19.9 mi), shallow
- Epicenter
- 35.669° N, 140.869° E
- Region
- Japan
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Magnitude estimates
Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.
| Mag. | Scale | Computed by | Notes |
|---|---|---|---|
| 4.9 | mb, body-wave | USGS National Earthquake Information Center | Preferred · Reviewed |
| 5.01 | Mw, moment | ISCGEMSUP | Final · ±0.22 |
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
- 69
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 2 in the 30 days before it.
After
- 5.529 km ESE of Katsuura, Japan · 17141 days ago · 88 km deep · 77 km away
- 4.337 km SE of Hasaki, Japan · 17123 days ago · 30 km deep · 30 km away
- 4.890 km NE of Hasaki, Japan · 17106 days ago · 33 km deep · 93 km away
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00013d3 (also filed as iscgemsup657113). Read Fri, Oct 2, 2026, 4:22 PM UTC.