QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/ushis421
USGS ushis421
3 Aug 1903, 06:49
Near San Jose, California
A magnitude 6.2 mw earthquake at 0 km depth.
Published location
Where is Near San Jose, California?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
37.300000, -121.800000
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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
ushis421
Coordinates
37.3, -121.8
Network
ushis
Significance
591