QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/ak0219neiszm
USGS ak0219neiszm

29 Jul 2021, 07:15

2021 Chignik, Alaska Earthquake

A magnitude 8.2 mww earthquake at 35 km depth.

Depth35 kmPublished hypocentral depth
Tsunami flagFlaggedUSGS catalog flag, not a current warning
Updated15 April 2026Latest timestamp stored in this record

Published location

Where is 2021 Chignik, Alaska Earthquake?

This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.

55.363500, -157.887600

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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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Use local emergency authorities and the live USGS event page. This historical evidence page is not an alert service.

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Continue exploring

Nearby events with a similar magnitude

M 8.23

1938 Semidi Islands, Alaska Earthquake

M 7.8

2020 Perryville, Alaska Earthquake

M 7.6

2020 Sand Point, Alaska Earthquake

M 7.4

54 km SE of Sand Point, Alaska

M 7.3

2025 Sand Point, Alaska Earthquake

M 7.2

2023 Sand Point, Alaska Earthquake

Catalog fields and provenance
Event ID
ak0219neiszm
Coordinates
55.3635, -157.8876
Network
ak
Significance
1500