Data last collected:
QuakeFactsEvidence report · prepared 19 October 2026https://quakes99.com/entity/iscgem897158
USGS iscgem897158
20 Jan 1948, 09:44
south of the Kermadec Islands
A magnitude 6.4 mw earthquake at 20 km depth.
Published location
Where is south of the Kermadec Islands?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
-33.566000, -178.031000
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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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Use local emergency authorities and the live USGS event page. This historical evidence page is not an alert service.
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Catalog fields and provenance
Event ID
iscgem897158
Coordinates
-33.566, -178.031
Network
iscgem
Significance
636
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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 south of the Kermadec Islands earthquake: magnitude 6.4 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 south of the Kermadec Islands
Depth in another unit
The recorded event depth of 20 km is approximately 12.43 miles below the source reference surface. Depth alone does not describe damage or local hazard.
Interpreting the recorded coordinates
The published position for south of the Kermadec Islands is 33.566° south and 178.031° west. This expresses the source coordinates in hemispheres; it does not establish an entrance, public access or a safe route.