M5.0 earthquake 17 km E of Gero, Japan
A magnitude 5.0 earthquake struck 17 km E of Gero, Japan on Sat, Sep 15, 1984, 7:39 AM JST (22:39 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M5.1 30 km E of Gero, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.0 (mb, body-wave), moderate
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1984-09-14 22:39:09 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 35.773° N, 137.422° E
- Region
- Japan
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
What happened
The USGS’s account of the effects of this earthquake.
Felt (III JMA) at Gifu, (II JMA) in the Nagoya-Iida-Tokyo area and (I JMA) in the Hamamatsu-Kyoto-Toyooka area and on Oshima.
From the USGS event page for usp00027db. 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.
How well it is located
Reviewed by a seismologist.
- Depth from
- OPERATOR_ASSIGNED
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.0 and up: 2 in the 60 days after this one and 5 in the 30 days before it.
After
- 4.320 km E of Gero, Japan · 15357 days ago · 5 km deep · 3 km away
- 5.130 km E of Gero, Japan · 15339 days ago · 15 km deep · 14 km away
Before
- 5.717 km E of Gero, Japan · 15357 days ago · 10 km deep · 0 km away
- 4.417 km E of Gero, Japan · 15358 days ago · 10 km deep · 3 km away
- 4.933 km ENE of Gero, Japan · 15358 days ago · 10 km deep · 20 km away
- 6.223 km E of Gero, Japan · 15358 days ago · 10 km deep · 6 km away
- 4.626 km E of Katsuyama, Japan · 15385 days ago · 279 km deep · 66 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00027db. Read Fri, Oct 2, 2026, 7:36 AM UTC.