Reviewed by USGSJapan123y ago
M6.9 earthquake 31 km SSW of Hikari, Japan
Friday, June 2, 1905, 05:39:39 UTC · 33.715°N, 131.759°E
A magnitude 6.9 earthquake struck 31 km SSW of Hikari, Japan on Friday, June 2, 1905, 05:39:39 UTC, at a depth of 60.0 km (shallow). No earthquake of this size or larger appears within 300 km in the USGS catalog since 1900.
- Magnitude
- 6.9
- Strong · mw
- Depth
- 60 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
349 kilotons of TNT
That is about 23 times the Hiroshima bomb. It released about 733 times the energy of a magnitude 5.0.
Tectonic setting
207 km
from the nearest mapped plate boundary, between the Amur and Okinawa plates. Earthquakes this far from a boundary happen on faults inside a plate, often less frequently but sometimes strongly.
Depth: shallow
60 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 no earlier M5.0+ earthquakes within 300 km.
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 16 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 22,869 recorded deaths. The most severe:
- 1792M6.4
Kyusyu Island
21 May 1792 · 170 km away
15,030 deathsExtreme damage ($25M+)tsunami
- 1707M8.4
Nankaido
28 Oct 1707 · 288 km away
5,000 deathsExtreme damage ($25M+)tsunami
- 1700M7.0
Tsushima, Nagasaki Prefecture
16 Apr 1700 · 233 km away
1,000 deathsSevere damage ($5–24M)tsunami
- 1711M6.7
Seionaikai, Japan
20 Dec 1711 · 217 km away
1,000 deathsSevere damage ($5–24M)tsunami
- 1872M7.4
Honshu: Sw
14 Mar 1872 · 134 km away
804 deathsExtreme damage ($25M+)tsunami
- 1889M6.3
Kumamoto
28 Jul 1889 · 142 km away
20 deathsLimited damage (under $1M)
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.