4.7

M4.7 Earthquake 24 km N of Naze, Japan — June 12, 2020

2020-06-12 13:03:37 UTC (2020-06-12) · approx. 10:03 PM UTC+9 local

Felt by 1 person across nearby locations. Aftershock of the M5.1 mainshock.

MagnitudeM4.7(mb)
Time13:03 UTC≈ 10:03 PM UTC+9
Depth70.3 kmintermediate depth
Coordinates28.585°, 129.439°
Felt by1DYFI response
Status✓ Reviewed by USGS

On June 12, 2020 at 13:03 UTC, a magnitude 4.7 intermediate depth earthquake struck 24 km N of Naze, Japan, at a depth of 70.3 km and coordinates 28.5850°, 129.4390°.

Physical scale: An earthquake of magnitude 4.7 releases seismic energy equivalent to roughly 169 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.1 km — a useful intuition for the size of the slip patch on the fault.

This earthquake is part of an ongoing aftershock sequence following the magnitude 5.1 mainshock that occurred 22 days ago 17 km WNW of Naze, Japan. Since the mainshock, the USGS has recorded 0 aftershocks in this area. Aftershock activity is expected to continue for days to weeks as stresses on surrounding faults redistribute.

The epicenter is located in Japan, a region characterized by the intersection of four tectonic plates — Pacific, Philippine Sea, Eurasian, and North American — creating multiple subduction zones. The nearest mapped fault system is the Japan Trench. View all earthquakes in Japan.

Learn more: Magnitude scale · Aftershock sequences

Map showing earthquake epicenter at 28.59°, 129.44°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 1 citizen response to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.

USGS DYFI community-reported intensity map for the M4.7 earthquake near 24 km N of Naze, Japan

Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report

Earthquake Details

Magnitude
4.7 mb
Depth
70.3 km
intermediate depth
Location
28.5850°N
129.4390°E
Felt Reports
1
DYFI responses
Community Intensity
4.3
CDI from reports

Technical Information

Event ID
us6000aaly
Event Type
earthquake
Status
✓ Reviewed
Significance
340
Azimuthal Gap
89.0°
Min Station Distance
2.026°
RMS Residual
0.72 sec
Last Updated
2022-08-08 23:11:12 UTC

Common Questions

How strong was the magnitude 4.7 earthquake near Naze, Japan?

The magnitude 4.7 earthquake that struck 24 km N of Naze, Japan on June 12, 2020 at 13:03 UTC had a depth of 70.3 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at 28.5850°, 129.4390°, which is 24 km N of Naze, Japan. View all earthquakes in Japan.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.7 earthquakes can continue for several days and gradually diminish over time.

Is this the same earthquake as the M5.1 one earlier?

No. This magnitude 4.7 earthquake is an aftershock of the larger magnitude 5.1 mainshock that occurred earlier 17 km WNW of Naze, Japan. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.

Has Japan had earthquakes this big before?

The largest recorded earthquake in Japan was the M9.1 Tohoku earthquake of March 11, 2011. Today's magnitude 4.7 event is significantly smaller than that historical record.

Actions

View on USGSDid You Feel It?

Location

Japan
View all Japan earthquakes

Authoritative source: USGS event page (event ID: us6000aaly). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2020, June 12, 2020). M4.7 Earthquake 24 km N of Naze, Japan — June 12, 2020. Retrieved August 8, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000aaly/