QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usc000thqq
USGS usc000thqq
21 Jan 2015, 06:51
Alamagan region, Northern Mariana Islands
A magnitude 5.4 mb earthquake at 79.1 km depth.
Published location
Where is Alamagan region, Northern Mariana Islands?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
17.996400, 146.562900
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
usc000thqq
Coordinates
17.9964, 146.5629
Network
us
Significance
449