M4.8 earthquake 71 km ENE of Kashima-shi, Japan
A magnitude 4.8 earthquake struck 71 km ENE of Kashima-shi, Japan on Sun, Sep 19, 1982, 3:19 AM JST (18:19 UTC), 48 km (30 mi) below the surface.
A larger quake followed: M5.0 3 km SW of Hitachi, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.8 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1982-09-18 18:19:37 UTC
- Depth
- 47.8 km (29.7 mi), shallow
- Epicenter
- 36.200° N, 141.384° 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 |
|---|---|---|---|
| 4.8 | mb, body-wave | USGS National Earthquake Information Center | Preferred · Reviewed · 9 stations |
| 5.02 | Mw, moment | ISCGEMSUP | Final · ±0.2 |
What happened
The USGS’s account of the effects of this earthquake.
Felt (I JMA) at Choshi and Mito.
From the USGS event page for usp0001ppg. U.S. Geological Survey text and figures are in the public domain.
Did you feel it?
No one has reported feeling this quake to the USGS.
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.8 and up: 8 in the 60 days after this one and 6 in the 30 days before it.
After
- 4.586 km ENE of Hasaki, Japan · 16084 days ago · 33 km deep · 40 km away
- 4.2109 km ENE of Hasaki, Japan · 16075 days ago · 33 km deep · 43 km away
- 4.744 km ESE of Takahagi, Japan · 16055 days ago · 53 km deep · 47 km away
- 4.566 km ESE of Takahagi, Japan · 16054 days ago · 52 km deep · 24 km away
- 4.75 km E of Sawara, Japan · 16051 days ago · 46 km deep · 82 km away
- 4.351 km ESE of Hasaki, Japan · 16041 days ago · 43 km deep · 64 km away
- 5.03 km SW of Hitachi, Japan · 16035 days ago · 111 km deep · 80 km away
- 4.611 km S of Hasaki, Japan · 16027 days ago · 61 km deep · 80 km away
Before
- 4.611 km SSE of Asahi, Japan · 16099 days ago · 58 km deep · 90 km away
- 4.251 km ESE of Hitachi, Japan · 16101 days ago · 53 km deep · 29 km away
- 4.233 km ESE of ?arai, Japan · 16104 days ago · 42 km deep · 42 km away
- 4.250 km ESE of Hitachi, Japan · 16105 days ago · 50 km deep · 30 km away
- 5.679 km ESE of Hitachi, Japan · 16113 days ago · 36 km deep · 19 km away
- 3.947 km ESE of Hitachi, Japan · 16116 days ago · 52 km deep · 36 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001ppg (also filed as iscgemsup592216). Read Sun, Oct 4, 2026, 1:50 PM UTC.