QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/us200030bb
USGS us200030bb
27 Jul 2015, 07:13
78 km SSW of Nikolski, Alaska
A magnitude 5.1 mb earthquake at 32.5 km depth.
Published location
Where is 78 km SSW of Nikolski, Alaska?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
52.297600, -169.334500
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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
us200030bb
Coordinates
52.2976, -169.3345
Network
us
Significance
400