M7.9 earthquake 128 km ESE of Kuril’sk, Russia

Sunday, December 3, 1995, 18:01:08 UTC · 44.663°N, 149.300°E

A magnitude 7.9 earthquake struck 128 km ESE of Kuril’sk, Russia on Sunday, December 3, 1995, 18:01:08 UTC, at a depth of 33.0 km (shallow). It is the strongest earthquake within 300 km since an M8.3 on October 4, 1994.

Magnitude: 7.9; Major · mw
Depth: 33 km; Shallow
Felt reports: 0; Did You Feel It?
Est. shaking: VI; Strong (ShakeMap)
PAGER alert: None; Not issued
Tsunami: No flag; USGS feed

Outlined circle: this earthquakeDashed circle: 200 km aftershock search areaColoured lines: estimated shaking intensity (USGS ShakeMap)

In context

How big was it, and why here?

Energy released

11 megatons of TNT

That is about 709 times the Hiroshima bomb. It released about 22,387 times the energy of a magnitude 5.0.

Tectonic setting

88 km

from the nearest mapped plate boundary, between the Okhotsk and Pacific plates. Earthquakes cluster along boundaries like this one, where plates collide, pull apart or slide past each other.

Depth: shallow

33 km

Shallow earthquakes (under 70 km) produce the strongest surface shaking for their size, so they are the ones most likely to cause damage near the epicenter.

Did You Feel It?

Where it was felt

No “Did You Feel It?” reports have been published for this event yet. If you felt it, you can add your report on the USGS website.

I felt it — report to USGS ↗

USGS PAGER estimate

Who was exposed to shaking

USGS publishes PAGER impact estimates for significant earthquakes, usually within an hour. No PAGER estimate is available for this event.

After the main event

Aftershocks within 200 km

USGS lists 314 M2.5+ earthquakes within 200 km in the following 30 days; the largest was M6.5 on December 3, 1995. Most nearby activity right after a large earthquake is aftershocks, which usually become less frequent over days and weeks.

Time after the mainshock on a logarithmic scale (first hours stretched), magnitude on the vertical axis. M2.5+ events from USGS.

Regional history

Past M5+ earthquakes within 300 km

USGS lists 1,572 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:

History · NOAA

Deadliest earthquakes in this area

NOAA’s significant-earthquake database lists 44 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 46 recorded deaths. The most severe:

1918M8.3
Kuril Islands
7 Sep 1918 · 196 km away
23 deathsModerate damage ($1–5M)tsunami
1780M7.5
Kuril Islands
29 Jun 1780 · 165 km away
12 deathsLimited damage (under $1M)tsunami
1994M8.3
Kuril Islands; Japan: Hokkaido
4 Oct 1994 · 186 km away · intensity IX
11 deathsSevere damage ($5–24M)tsunami
1958M8.3
Kuril Islands
6 Nov 1958 · 62 km away · intensity X
Moderate damage ($1–5M)tsunami
1969M8.2
Shikotan Island, Kurilskiye
11 Aug 1969 · 163 km away · intensity IX
Moderate damage ($1–5M)tsunami
1978M7.5
Kuril Islands
6 Dec 1978 · 215 km away · intensity VIII
Moderate damage ($1–5M)

NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.

Nearby trackers