QuakeFactsEvidence report · prepared 3 September 2026https://quakes99.com/entity/us7000qxp1
USGS us7000qxp1
21 Sept 2025, 10:30
122 km SW of Adak, Alaska
A magnitude 5.5 mww earthquake at 30 km depth.
Published location
Where is 122 km SW 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.
51.198700, -178.022100
Open the interactive map ↗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.
Need a current safety answer?
Use local emergency authorities and the live USGS event page. This historical evidence page is not an alert service.
Continue exploring
Nearby events with a similar magnitude
Catalog fields and provenance
Event ID
us7000qxp1
Coordinates
51.1987, -178.0221
Network
us
Significance
467