QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem899704
USGS iscgem899704
27 Jan 1943, 03:45
167 km WSW of Adak, Alaska
A magnitude 6.5 mw earthquake at 35 km depth.
Published location
Where is 167 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.
51.509000, -178.978000
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
iscgem899704
Coordinates
51.509, -178.978
Network
iscgem
Significance
642