264 km SSW of Severo-Kuril’sk, Russia

A magnitude 5.9 earthquake was recorded 264 km SSW of Severo-Kuril’sk, Russia at 16:48 UTC on 2026-10-06. This was a moderate earthquake. Shaking at this size can damage poorly built structures close to the epicentre.

How big was it?

This earthquake released about 11 kilotons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 6.9 would have released about 32 times as much.

1. Ridgecrest, California 2019 M 7.1 63× the energy of this one
2. Loma Prieta, California 1989 M 6.9 32× the energy of this one
3. Northridge, California 1994 M 6.7 16× the energy of this one
4. This earthquake M 5.9 about 11 kilotons of TNT
5. Mineral, Virginia 2011 M 5.8 this one released 1.4× more
6. Magna, Utah 2020 M 5.7 this one released 2× more

Energy from the Gutenberg–Richter relation (log₁₀E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

Where

Epicentre 48.4554, 154.8085. Map © OpenStreetMap contributors.

Aftershocks so far

No further earthquakes have been recorded within 50 km since this one.

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 19:04 UTC. QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

Revisions

USGS refines a solution as more stations report. Every change we have seen is listed here.

On USGS

• The official USGS event page — the source of record for every value above
• Did you feel it? Report it to USGS — reports go to USGS, not to us
• ShakeMap for this event, when USGS has produced one

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.