M6.2 earthquake 23 km E of Gero, Japan
A magnitude 6.2 earthquake struck 23 km E of Gero, Japan on Fri, Sep 14, 1984, 8:48 AM JST (23:48 UTC), 10 km (6 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.2 (mw), strong
- Local time
- UTC
- 1984-09-13 23:48:49 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 35.789° N, 137.488° E
- Region
- Japan
- Strongest shaking
- VIII, severe shaking
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Shaking
The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.
- Strongest estimated
- VIII, severe shaking
- Peak ground acceleration
- 56.0% of gravity
- Peak ground velocity
- 4.0 cm/s
- Map
- Automatic
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 2.5 and up: 6 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.933 km ENE of Gero, Japan · 15348 days ago · 10 km deep · 15 km away
- 4.417 km E of Gero, Japan · 15348 days ago · 10 km deep · 6 km away
- 5.717 km E of Gero, Japan · 15347 days ago · 10 km deep · 6 km away
- 5.017 km E of Gero, Japan · 15347 days ago · 10 km deep · 6 km away
- 4.320 km E of Gero, Japan · 15347 days ago · 5 km deep · 3 km away
- 5.130 km E of Gero, Japan · 15329 days ago · 15 km deep · 8 km away
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00027cb (also filed as gcmtb091384a, gcmt19840913234848, atlas19840913234849, iscgem543747). Read Tue, Sep 22, 2026, 8:08 AM UTC.