M 6.4 earthquake – 118 km E of Yamada, Japan
·
Local time: Mar 23, 1960 · 10:07 (UTC+9)
StrongShallow · 15 km
Reviewed by a seismologist
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- Magnitude
- 6.4moment magnitude (mw)
- Depth
- 15 kmShallow earthquake
- Epicenter
- 39.516, 143.321118 km from Yamada
- Energy released
- 60 kilotons of TNTabout 4 × Hiroshima
- Felt reports
- —"Did You Feel It?" responses
- Shaking intensity
- —not estimated
- Aftershocks
- 2M2.5+ within 33 km, up to 60 days
- Significance
- 632USGS score, 0–1,000+
Not rare around here
An earthquake at least as strong struck within 300 km on Mar 23, 1960.
How strong was it?
Strong earthquake. It released 60 kilotons of TNT, 126 times the energy of a magnitude 5.0. Bars use the magnitude scale: every step is about 32 times more energy.
Aftershocks
2 earthquakes of M2.5+ within 33 km in the 60 days after.
The strongest earthquakes within 300 km
Since 1900, around Japan.
- 9.1 2011 Great Tohoku Earthquake, Japan Mar 11, 2011
- 8.4 1933 Sanriku (Sanriku-oki) Earthquake, Japan Mar 2, 1933
- 8.2 1968 Tokachi-Oki Earthquake May 16, 1968
- 8.2 2003 Tokachi-Oki Earthquake Sep 25, 2003
- 8.1 1952 Tokachi-Oki Earthquake Mar 4, 1952
- 7.9 113 km ENE of Miyako, Japan Mar 20, 1960
- 7.9 78 km E of Hachinohe, Japan Mar 9, 1931
- 7.9 70 km S of Honchō, Japan May 16, 1968
In the week before
Earthquakes within 33 km in the 7 days before this one: possible foreshocks.