QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem897639
USGS iscgem897639
19 Nov 1948, 01:04
9 km NW of San Isidro, Costa Rica
A magnitude 6.3 mw earthquake at 25 km depth.
Published location
Where is 9 km NW 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.
9.433000, -83.749000
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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
iscgem897639
Coordinates
9.433, -83.749
Network
iscgem
Significance
618