QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp0009eq0
USGS usp0009eq0
20 Sept 1999, 18:47
21 km S of Puli, Taiwan
A magnitude 7.7 mwc earthquake at 33 km depth.
Published location
Where is 21 km S of Puli, 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.
23.772000, 120.982000
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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
usp0009eq0
Coordinates
23.772, 120.982
Network
us
Significance
912