QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem913200
USGS iscgem913200
15 Jul 1918, 01:23
52 km WNW of Big Lagoon, California
A magnitude 6.5 mw earthquake at 15 km depth.
Published location
Where is 52 km WNW of Big Lagoon, 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.
41.325000, -124.720000
Open the interactive map ↗Map data © OpenStreetMap contributors
What the numbers mean
Magnitude measures event size; depth locates the source below the surface. Neither value alone establishes local damage or personal risk.
Need a current safety answer?
Use local emergency authorities and the live USGS event page. This historical evidence page is not an alert service.
Continue exploring
Nearby events with a similar magnitude
Catalog fields and provenance
Event ID
iscgem913200
Coordinates
41.325, -124.72
Network
iscgem
Significance
650