QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/us20006ggf
USGS us20006ggf
21 Jul 2016, 17:28
Tonga region
A magnitude 5.4 mwb earthquake at 10 km depth.
Published location
Where is Tonga region?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
-23.621800, -175.052800
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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.
Need a current safety answer?
Use local emergency authorities and the live USGS event page. This historical evidence page is not an alert service.
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Nearby events with a similar magnitude
Catalog fields and provenance
Event ID
us20006ggf
Coordinates
-23.6218, -175.0528
Network
us
Significance
449