QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp0001zy5
USGS usp0001zy5

20 Nov 1983, 00:44

139 km E of Shikotan, Russia

A magnitude 6.1 mw earthquake at 29.3 km depth.

Depth29.3 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated19 December 2025Latest timestamp stored in this record

Published location

Where is 139 km E of Shikotan, Russia?

This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.

43.706000, 148.444000

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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.

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Nearby events with a similar magnitude

M 6.1

112 km ENE of Shikotan, Russia

M 6.1

83 km ESE of Shikotan, Russia

M 6.1

138 km ESE of Kuril’sk, Russia

M 6.1

126 km ESE of Kuril’sk, Russia

M 6.1

112 km ESE of Kuril’sk, Russia

M 6.1

289 km ESE of Shikotan, Russia

Catalog fields and provenance
Event ID
usp0001zy5
Coordinates
43.706, 148.444
Network
us
Significance
572