Reviewed by USGSJapan118y ago
M7.2 earthquake 176 km SE of Shingū, Japan
Saturday, February 12, 1910, 18:10:12 UTC · 32.823°N, 137.532°E
A magnitude 7.2 earthquake struck 176 km SE of Shingū, Japan on Saturday, February 12, 1910, 18:10:12 UTC, at a depth of 375.0 km (deep). It is the strongest earthquake within 300 km since an M7.4 on January 21, 1906.
- Magnitude
- 7.2
- Major · mB
- Depth
- 375 km
- Deep
- 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
951 kilotons of TNT
That is about 63 times the Hiroshima bomb. It released about 1,995 times the energy of a magnitude 5.0.
Tectonic setting
49 km
from the nearest mapped plate boundary, between the Amur and Philippine Sea plates. Earthquakes cluster along boundaries like this one, where plates collide, pull apart or slide past each other.
Depth: deep
375 km
Deep earthquakes (over 300 km) happen deep inside subducting plates. They rarely cause damage, but can be felt faintly over very large distances.
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 has not published any M2.5+ earthquake within 200 km in the 30 days after this event.
Regional history
Past M5+ earthquakes within 300 km
USGS lists 4 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 14 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 12,632 recorded deaths. The most severe:
- 1707M8.4
Nankaido
28 Oct 1707 · 258 km away
5,000 deathsExtreme damage ($25M+)tsunami
- 1854M8.4
Nankaido
24 Dec 1854 · 238 km away
3,000 deathsExtreme damage ($25M+)tsunami
- 1707M8.4
Enshunada
28 Oct 1707 · 144 km away
2,000 deathsSevere damage ($5–24M)tsunami
- 1854
Iga, Ise, Yamato
9 Jul 1854 · 280 km away
1,352 deathsSevere damage ($5–24M)
- 1854M8.3
Enshunada Sea
23 Dec 1854 · 135 km away
1,000 deathsExtreme damage ($25M+)tsunami
- 1830
Kyoto
19 Aug 1830 · 280 km away
280 deaths
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.