QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000ak1k
USGS usp000ak1k
23 Jul 2001, 23:31
27 km SW of San Isidro, Costa Rica
A magnitude 5.4 mwc earthquake at 33 km depth.
Published location
Where is 27 km SW of San Isidro, Costa Rica?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
9.194000, -83.881000
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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
usp000ak1k
Coordinates
9.194, -83.881
Network
us
Significance
449