QQuakeFacts

Data last collected:

USGS usp000bf6t

24 Oct 2002, 07:07

101 km NNW of Ishigaki, Japan

A magnitude 5.4 mb earthquake at 10 km depth.

Depth10 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated7 November 2014Latest timestamp stored in this record

Published location

Where is 101 km NNW of Ishigaki, Japan?

This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.

25.186000, 123.765000

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What the numbers mean

Magnitude measures event size; depth locates the source below the surface. Neither value alone establishes local damage or personal risk.

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Nearby events with a similar magnitude

Catalog fields and provenance
Event ID
usp000bf6t
Coordinates
25.186, 123.765
Network
us
Significance
449

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Questions this evidence can answer

01What exactly is this record?

Use the name, place, date and identifiers above to confirm that you have the right 101 km NNW of Ishigaki, Japan earthquake: magnitude 5.4 and depth | QuakeFacts record.

02What does the evidence establish?

Read the reported values with their units, coverage dates and source notes. Keep observed facts separate from estimates or interpretation.

03What should I verify next?

Follow the primary-source links and check the limitations before using this evidence for a decision, comparison or citation.

A closer look at 101 km NNW of Ishigaki, Japan

Depth in another unit

The recorded event depth of 10 km is approximately 6.21 miles below the source reference surface. Depth alone does not describe damage or local hazard.

Interpreting the recorded coordinates

The published position for 101 km NNW of Ishigaki, Japan is 25.186° north and 123.765° east. This expresses the source coordinates in hemispheres; it does not establish an entrance, public access or a safe route.

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