QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000ha4n
USGS usp000ha4n
30 Mar 2010, 02:02
177 km WNW of Iwanai, Japan
A magnitude 5.7 mwc earthquake at 8 km depth.
Published location
Where is 177 km WNW of Iwanai, Japan?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
43.308000, 138.379000
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
usp000ha4n
Coordinates
43.308, 138.379
Network
us
Significance
502