QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/us1000dqk1
USGS us1000dqk1
23 Apr 2018, 09:13
261 km E of Biak, Indonesia
A magnitude 5.5 mww earthquake at 10 km depth.
Published location
Where is 261 km E of Biak, Indonesia?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
-1.287200, 138.425000
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
us1000dqk1
Coordinates
-1.2872, 138.425
Network
us
Significance
465