Earthquakes medium

M 5.1 Earthquake 14 km WNW of Naze, Japan

Source: USGS · Japan

A magnitude 5.1 earthquake was recorded by USGS near 14 km WNW of Naze. On the USGS Earthquake Hazards Program scale, M5.1 is classified "Moderate". Among the 1,740 earthquake reports Areazine has published, this M5.1 event ranks stronger than 65% of them (rank #454 by magnitude).

The earthquake report, at a glance

Magnitude
M 5.1
USGS class
Moderate
Location
14 km WNW of Naze
Archive rank
#454 of 1,740
Source
USGS
Published
September 20, 2026
MODERATE

Stronger than 65% of the 1,740 earthquake reports in Areazine's archive, weaker than 453 others.

Record status: a snapshot from USGS, not a final record. Check USGS's own event page for aftershocks and any later revision to the magnitude shown here.

What Happened

A M 5.1 mww earthquake struck 14 km WNW of Naze, Japan, on 2026-08-20 at 12:48:22 UTC. The event was recorded at a depth of 68.834 km.

Location Details

The epicenter was located at 28.3947°N, 129.3406°E, 14 km west-northwest of Naze. The depth of 68.834 km places this event in the intermediate range (20-70 km).

Impact Assessment

No felt reports were available. There was no tsunami advisory (tsunami field value: 0) and no alert level assigned.

What You Should Know

This was classified as a moderate earthquake. Residents in the area should be aware of the possibility of aftershocks.

Source

https://earthquake.usgs.gov/earthquakes/eventpage/us7000tipl - USGS

Original source: USGS Official Notice ↗

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Beyond this USGS earthquake report's own category, Areazine surfaces two nationwide peer sets: length-matched and severity/date-matched notices from elsewhere in the archive, distinct from the same-feed Related list above.

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Similar severity timing

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Frequently Asked Questions

Common questions about this USGS earthquake report.

What magnitude was this earthquake? ▾
A magnitude 5.1 earthquake occurred 14 km WNW of Naze, Japan, at a depth of 68.8 km.
How should a magnitude 5.1 ("Moderate") event be understood? ▾
The USGS classifies M5.1 as "Moderate" on its Earthquake Hazards Program scale. Events in this range are often felt near the epicenter and can cause minor damage to vulnerable structures, though widespread damage is uncommon.
Where does this event rank against Areazine's other recorded earthquakes? ▾
This is the #454 strongest of the 1,740 earthquake reports in Areazine's archive by magnitude, stronger than 65% of them and weaker than 453 others.
Was Naze likely to feel this earthquake? ▾
This event was centered 14 km WNW of Naze. Shaking intensity falls off sharply with distance from the epicenter and depends on depth and local geology, so check the USGS "Did You Feel It?" report for this event for real felt-shaking data rather than assuming from magnitude and distance alone.

Source data

EPA Outdoor Air Quality Data

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AirNow (EPA / NOAA)

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National Weather Service

Active watches, warnings, and advisories, NOAA

CDC Air Quality & Health

Health-impact reference behind every AQI category