Reviewed by USGSRussia region121y ago
M6.3 earthquake in Komandorskiye Ostrova, Russia region
Wednesday, August 1, 1906, 23:17:29 UTC · 54.529°N, 166.212°E
A magnitude 6.3 earthquake struck in Komandorskiye Ostrova, Russia region on Wednesday, August 1, 1906, 23:17:29 UTC, at a depth of 20.0 km (shallow). It is the strongest earthquake within 300 km since an M6.6 on January 6, 1906.
- Magnitude
- 6.3
- Strong · mw
- Depth
- 20 km
- Shallow
- Felt reports
- 0
- Did You Feel It?
- Est. shaking
- —
- No ShakeMap
- PAGER alert
- None
- Not issued
- Tsunami
- No flag
- USGS feed
Outlined circle: this earthquake
In context
How big was it, and why here?
Energy released
43 kilotons of TNT
That is about 3 times the Hiroshima bomb. It released about 89 times the energy of a magnitude 5.0.
Tectonic setting
15 km
from the nearest mapped plate boundary, between the North American and Pacific plates. Earthquakes cluster along boundaries like this one, where plates collide, pull apart or slide past each other.
Depth: shallow
20 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 100 km
USGS has not published any M2.5+ earthquake within 100 km in the 30 days after this event.
Regional history
Past M5+ earthquakes within 300 km
USGS lists 2 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 8 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700. The most severe:
- 1849
Kamchatka
28 Sep 1849 · 54 km away
Limited damage (under $1M)tsunami
- 1792M8.4
Near Kamchatka
22 Aug 1792 · 280 km away · intensity XI
tsunami
- 1737M7.8
Off Kamchatka
4 Nov 1737 · 231 km away · intensity X
- 1905M7.8
Komandorsky Island
15 Sep 1905 · 224 km away
- 1790M7.5
Near Kamchatka
2 Dec 1790 · 280 km away · intensity X
- 1849M7.5
Komandorsky Island
28 Oct 1849 · 54 km away · intensity X
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.