QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp00024mr
USGS usp00024mr
26 May 1984, 00:53
Pacific-Antarctic Ridge
A magnitude 6.4 mw earthquake at 10 km depth.
Published location
Where is Pacific-Antarctic Ridge?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
-54.976000, -135.688000
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
usp00024mr
Coordinates
-54.976, -135.688
Network
us
Significance
630