QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem805845
USGS iscgem805845
15 Aug 1969, 09:41
Mariana Islands region
A magnitude 6.1 mw earthquake at 303.2 km depth.
Published location
Where is Mariana Islands region?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
21.665000, 143.050000
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
iscgem805845
Coordinates
21.665, 143.05
Network
iscgem
Significance
578