QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp0002bkb
USGS usp0002bkb
3 Feb 1985, 04:50
85 km SSE of Pangai, Tonga
A magnitude 6 mw earthquake at 56.5 km depth.
Published location
Where is 85 km SSE of Pangai, Tonga?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
-20.547000, -174.099000
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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
usp0002bkb
Coordinates
-20.547, -174.099
Network
us
Significance
554