QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/ak999fnydiyi
USGS ak999fnydiyi

7 Dec 1999, 00:19

29 km N of Akhiok, Alaska

A magnitude 6.4 mw earthquake at 43.9 km depth.

Depth43.9 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated29 April 2022Latest timestamp stored in this record

Published location

Where is 29 km N of Akhiok, 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.

57.202600, -154.257300

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Map data © OpenStreetMap contributors

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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Nearby events with a similar magnitude

M 6.4

104 km SSE of Ugashik, Alaska

M 6.41

103 km SSE of Akhiok, Alaska

M 6.36

95 km S of Old Harbor, Alaska

M 6.36

77 km ESE of Chignik, Alaska

M 6.45

71 km S of Akhiok, Alaska

M 6.47

73 km S of Akhiok, Alaska

Catalog fields and provenance
Event ID
ak999fnydiyi
Coordinates
57.2026, -154.2573
Network
ak
Significance
630