QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp0003sdm
USGS usp0003sdm
27 Feb 1989, 23:39
63 km N of Tobelo, Indonesia
A magnitude 6.4 mw earthquake at 53.7 km depth.
Published location
Where is 63 km N of Tobelo, Indonesia?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
2.301000, 128.009000
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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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Catalog fields and provenance
Event ID
usp0003sdm
Coordinates
2.301, 128.009
Network
us
Significance
630