QQuakeFacts
USGS ak0219nmy1jo

29 Jul 2021, 21:30

142 km SE of Chignik, Alaska

A magnitude 5 mb earthquake at 28.9 km depth.

Depth28.9 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated3 October 2021Latest timestamp stored in this record

Published location

Where is 142 km SE of Chignik, 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.

55.362200, -156.854500

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
ak0219nmy1jo
Coordinates
55.3622, -156.8545
Network
ak
Significance
385