Japan earthquakes

M4.5 earthquake 24 km SE of Hasaki, Japan

A magnitude 4.5 earthquake struck 24 km SE of Hasaki, Japan on Sat, Sep 17, 2016, 4:35 PM JST (07:35 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.3 104 km ESE of ?hara, 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
4.5 (Mwr, regional moment), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2016-09-17 07:35:53 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
35.578° N, 141.019° E
Region
Japan
Felt reports
17
Tsunami flag
No
Status
Reviewed by a seismologist

What happened

The USGS’s account of the effects of this earthquake.

Felt (II) at Tokyo. Also felt at Chiba, Inzai, Kimitsu, Kukizaki, Narita, Soka, Tomisato, Tsuchiura and Tsukuba. Recorded (3 JMA) in Chiba.

From the USGS event page for us10006qdg. U.S. Geological Survey text and figures are in the public domain.

Did you feel it?

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

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

Fault motion and ground failure

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

Faulting
Normal
Moment magnitude
4.5 Mwr
Nodal plane 1
Strike 4°, dip 62°, rake -81°
Nodal plane 2
Strike 165°, dip 29°, rake -107°

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 5.0 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.07
Depth from
Operator assigned
Station coverage gap
113°
Stations used
116

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 12 in the 60 days after this one and 5 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us10006qdg. Read Sun, Oct 4, 2026, 7:47 PM UTC.