QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/us7000e3x8
USGS us7000e3x8
17 May 2021, 21:25
288 km WSW of Adak, Alaska
A magnitude 5.4 mww earthquake at 30.8 km depth.
Published location
Where is 288 km WSW of Adak, 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.
51.201800, 179.345900
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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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Use local emergency authorities and the live USGS event page. This historical evidence page is not an alert service.
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Nearby events with a similar magnitude
Catalog fields and provenance
Event ID
us7000e3x8
Coordinates
51.2018, 179.3459
Network
us
Significance
449