Japan earthquakes

M4.8 earthquake 43 km E of Namie, Japan

A magnitude 4.8 earthquake struck 43 km E of Namie, Japan on Thu, Sep 28, 2017, 4:11 PM JST (07:11 UTC), 52 km (32 mi) below the surface.

A larger quake followed: M5.6 17 km ENE of Iwaki, Japan. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 4.8 (mb, body-wave), light
Magnitude from: USGS National Earthquake Information Center
Local time: Thu, Sep 28, 2017, 4:11 PM JST
UTC: 2017-09-28 07:11:29 UTC
Depth: 52.0 km (32.3 mi), shallow
Epicenter: 37.409° N, 141.488° E
Region: Japan
Felt reports: 6
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 · ±0.062 · 79 stations
4.98	Mw, moment	ISC-GEM global catalog	Final · ±0.1

Did you feel it?

6 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 7.0 km horizontally, 6.8 km in depth
Magnitude uncertainty: ±0.06
Depth from: From location
Station coverage gap: 98°
Stations used: 107

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.8 and up: 16 in the 60 days after this one and 4 in the 30 days before it.

After

Before

Earthquakes today Japan earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000avsq (also filed as iscgem611069331). Read Mon, Oct 5, 2026, 2:57 AM UTC.