QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000arbz
USGS usp000arbz
21 Oct 2001, 15:40
128 km S of Unalaska, Alaska
A magnitude 5.2 mwc earthquake at 33 km depth.
Published location
Where is 128 km S of Unalaska, 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.
52.721000, -166.723000
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
usp000arbz
Coordinates
52.721, -166.723
Network
us
Significance
416