QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp0009erf
USGS usp0009erf
20 Sept 1999, 22:46
44 km SSE of Lugu, Taiwan
A magnitude 6.4 mwc earthquake at 33 km depth.
Published location
Where is 44 km SSE of Lugu, Taiwan?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
23.390000, 120.964000
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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
usp0009erf
Coordinates
23.39, 120.964
Network
us
Significance
630