M4.7 earthquake 9 km WNW of Ichihara, Japan
A magnitude 4.7 earthquake struck 9 km WNW of Ichihara, Japan on Mon, Jul 19, 1982, 1:55 PM JST (04:55 UTC), 76 km (47 mi) below the surface.
A larger quake followed: M5.0 23 km S of Asahi, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.7 (mb), light
- Local time
- UTC
- 1982-07-19 04:55:36 UTC
- Depth
- 75.7 km (47.0 mi), intermediate-depth
- Epicenter
- 35.551° N, 139.983° 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.
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.7 and up: 7 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.30 km WNW of Sakai, Japan · 16134 days ago · 68 km deep · 63 km away
- 4.511 km SSE of Futtsu, Japan · 16124 days ago · 84 km deep · 37 km away
- 5.023 km S of Asahi, Japan · 16120 days ago · 56 km deep · 65 km away
- 5.126 km E of ?hara, Japan · 16116 days ago · 33 km deep · 71 km away
- 5.429 km SSW of Miura, Japan · 16113 days ago · 34 km deep · 86 km away
- 4.824 km SSE of Katsuura, Japan · 16105 days ago · 79 km deep · 79 km away
- 4.611 km SSE of Asahi, Japan · 16087 days ago · 58 km deep · 64 km away
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001ngc. Read Tue, Sep 22, 2026, 5:27 PM UTC.