QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem800254
USGS iscgem800254
20 Jan 1970, 18:33
16 km SSW of Sarabetsu, Japan
A magnitude 6.5 mw earthquake at 33.5 km depth.
Published location
Where is 16 km SSW of Sarabetsu, 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.
42.534000, 143.080000
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
iscgem800254
Coordinates
42.534, 143.08
Network
iscgem
Significance
640