QQuakeFacts
USGS ak0188d4oyaj

1 Jul 2018, 09:20

63 km N of Petersville, Alaska

A magnitude 5 mw earthquake at 117.3 km depth.

Depth117.3 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated22 December 2025Latest timestamp stored in this record

Published location

Where is 63 km N of Petersville, 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.

63.067600, -150.797300

Open the interactive map ↗

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.

Open the USGS event →

Continue exploring

Nearby events with a similar magnitude

Catalog fields and provenance
Event ID
ak0188d4oyaj
Coordinates
63.0676, -150.7973
Network
ak
Significance
495