Japan earthquakes

M4.3 earthquake 114 km ESE of Iwaki, Japan

A magnitude 4.3 earthquake struck 114 km ESE of Iwaki, Japan on Sat, Nov 11, 2017, 8:48 AM JST (23:48 UTC), 24 km (15 mi) below the surface.

A larger quake followed: M5.0 46 km SE of Namie, Japan. This one was a foreshock.

Iwaki forecastMore in Japan

Map

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

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The earthquake

Magnitude
4.3 (Mwr, regional moment), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2017-11-10 23:48:06 UTC
Depth
23.6 km (14.7 mi), shallow
Epicenter
36.571° N, 142.022° 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.

Fault motion and ground failure

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Faulting
Reverse (thrust)
Moment magnitude
4.3 Mwr
Nodal plane 1
Strike 44°, dip 77°, rake 99°
Nodal plane 2
Strike 190°, dip 16°, rake 57°

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 5.9 km horizontally, 6.4 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
139°
Stations used
23

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 6 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000bqi1. Read Mon, Oct 5, 2026, 10:43 AM UTC.