QQuakeFacts
USGS ak018fe58vlz

1 Dec 2018, 07:07

4 km SSE of Big Lake, Alaska

A magnitude 5 mw earthquake at 51.3 km depth.

Depth51.3 kmPublished hypocentral depth
Tsunami flagFlaggedUSGS catalog flag, not a current warning
Updated17 August 2023Latest timestamp stored in this record

Published location

Where is 4 km SSE of Big Lake, 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.

61.483300, -149.936200

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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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Catalog fields and provenance
Event ID
ak018fe58vlz
Coordinates
61.4833, -149.9362
Network
ak
Significance
433