QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/official19120612070400000
USGS official19120612070400000
12 Jun 1912, 07:04
Event 49 Novarupta-Mount Katmai area, Alaska Peninsula
A magnitude 6.1 ms earthquake at 0 km depth.
Published location
Where is Event 49 Novarupta-Mount Katmai area, Alaska Peninsula?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
58.300000, -155.000000
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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
official19120612070400000
Coordinates
58.3, -155
Network
official
Significance
572